About us Contact Us Submit BOM
RFQs(0)
English
Close Menu
View All

Please refer to the English Version as our Official Version.Return

Europe
France(Français) Germany(Deutsch) Italy(Italia) Russian(русский) Poland(polski) Czech(Čeština) Luxembourg(Lëtzebuergesch) Netherlands(Nederland) Iceland(íslenska) Hungarian(Magyarország) Spain(español) Portugal(Português) Turkey(Türk dili) Bulgaria(Български език) Ukraine(Україна) Greece(Ελλάδα) Israel(עִבְרִית) Sweden(Svenska) Finland(Svenska) Finland(Suomi) Romania(românesc) Moldova(românesc) Slovakia(Slovenská) Denmark(Dansk) Slovenia(Slovenija) Slovenia(Hrvatska) Croatia(Hrvatska) Serbia(Hrvatska) Montenegro(Hrvatska) Bosnia and Herzegovina(Hrvatska) Lithuania(lietuvių) Spain(Português) Switzerland(Deutsch) United Kingdom(English)
Asia/Pacific
Japan(日本語) Korea(한국의) Thailand(ภาษาไทย) Malaysia(Melayu) Singapore(Melayu) Vietnam(Tiếng Việt) Philippines(Pilipino)
Africa, India and Middle East
United Arab Emirates(العربية) Iran(فارسی) Tajikistan(فارسی) India(हिंदी) Madagascar(malaɡasʲ)
South America / Oceania
New Zealand(Maori) Brazil(Português) Angola(Português) Mozambique(Português)
North America
United States(English) Canada(English) Haiti(Ayiti) Mexico(español)
HomeProductsCircuit ProtectionTVS - DiodesMA5KP20A
MA5KP20A Image
MA5KP20A Image - 1
Image may be representation.
See specifications for product details.
Share
 Favorite
EXPRESS OPTION
Payment method

MA5KP20A - Microchip Technology

Manufacturer Part Number
MA5KP20A
Manufacturer
Microchip Technology
Allelco Part Number
98D-MA5KP20A
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
45,590 pcs available, New & Original
Parts Description
TVS DIODE 20VWM 32.4VC DO204AR
Package
DO-204AR
Data sheet
MA5KP20A.pdf

PCN Assembly/Origin

2.73KHz.pdf
RoHs Status
 
Compare
Our certification
In stock: 45590
  • Unit Price: $16.20
  • Subtotal: $0.00

Want a better price?
Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $16.20 $16.20
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

MA5KP20A Tech Specifications
Microchip Technology - MA5KP20A technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology - MA5KP20A

Product Attribute Attribute Value
Manufacturer Microchip Technology
Voltage - Reverse Standoff (Typ) 20V
Voltage - Clamping (Max) @ Ipp 32.4V
Voltage - Breakdown (Min) 22.2V
Unidirectional Channels 1
Type Zener
Supplier Device Package DO-204AR
Series Military, MIL-PRF-19500
Power Line Protection No
Product Attribute Attribute Value
Power - Peak Pulse 5000W (5kW)
Package / Case DO-204AR, Axial
Package Bulk
Operating Temperature -65°C ~ 150°C (TJ)
Mounting Type Through Hole
Current - Peak Pulse (10/1000µs) 154A
Capacitance @ Frequency -
Base Product Number 5KP20
Applications General Purpose

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS non-compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8541.10.0080

Frequently Asked Questions(FAQ)

What are the key electrical characteristics of the MA5KP20A TVS diode that make it suitable for protecting sensitive electronic circuits from voltage transients?
The MA5KP20A offers a reverse standoff voltage of 20V, which establishes its operating window in undervoltage conditions. Its breakdown voltage minimum is 22.2V, ensuring reliable activation only when overvoltage events exceed this threshold. Under defined test conditions (10/1000µs pulse), the device clamps transient voltages to a maximum of 32.4V at a peak current of 154A, demonstrating robust energy absorption capability. With a peak pulse power rating of 5kW, it provides substantial protection margin against common industrial surges and electrostatic discharges, making it appropriate for general-purpose applications requiring stable clamping behavior.
How does the MA5KP20A compare to other TVS diodes in terms of surge handling capability when subjected to high-energy transients?
When compared to similar 5KP series devices such as the MA5KP18A or MA5KP24A, the MA5KP20A delivers consistent peak pulse current of 154A and 5kW power handling under standardized testing. This level of performance aligns with typical requirements for automotive and industrial environments where repetitive surges may occur. While lower than some higher-power arrays like 15KP or 20KP series components, the MA5KP20A strikes a balance between footprint, cost, and surge resilience, making it preferable for space-constrained designs without excessive surge margins.
Can the MA5KP20A be used in military or aerospace applications, and what qualifications support its deployment in such environments?
Yes, the MA5KP20A meets MIL-PRF-19500 qualification standards and carries a Military Grade designation, indicating suitability for defense and aerospace systems where reliability under extreme conditions is essential. Operating across -65°C to +150°C junction temperature range ensures functionality in wide thermal extremes. The axial DO-204AR package also facilitates integration into ruggedized assemblies. However, designers must verify full system compliance with relevant military specifications beyond component-level qualification.
What considerations should engineers evaluate when selecting the MA5KP20A versus alternative protection devices like varistors or Zener diodes?
Unlike varistors, which exhibit non-linear impedance and can degrade after multiple surges, the MA5KP20A provides predictable Zener-like triggering and consistent clamping voltage due to its avalanche breakdown mechanism. Compared to standard Zener diodes used for regulation, the MA5KP20A includes enhanced surge robustness with defined Ipp and power ratings. For applications involving frequent transient exposure, the MA5KP20A offers better long-term reliability. However, if sub-100ns response time is critical, parasitic capacitance—though unspecified here—may influence performance, necessitating evaluation against faster alternatives such as silicon-based suppressors.
How does the unidirectional nature of the MA5KP20A affect its application in bidirectional signal protection scenarios?
The MA5KP20A is designed as a unidirectional device, meaning it primarily suppresses positive-going voltage transients relative to ground. In bidirectional communication lines such as RS-485 or CAN bus interfaces, a second MA5KP20A configured in reverse polarity is required to protect against negative excursions. Alternatively, a bidirectional TVS array may be preferred to reduce part count and improve symmetry. Engineers must ensure both polarities are adequately protected, especially in systems exposed to lightning-induced transients or ESD events that can manifest in either direction.
Is the MA5KP20A RoHS compliant, and what implications does its RoHS non-compliant status have for modern manufacturing processes?
No, the MA5KP20A is RoHS non-compliant due to lead content in its construction, which affects its use in commercial consumer electronics subject to EU directives. This restricts adoption in new consumer product lines unless exemptions apply. However, in military, medical, or legacy industrial systems where regulatory flexibility exists, continued use remains viable. Designers sourcing this component should confirm supply chain traceability and consider lifecycle management strategies, particularly if transitioning to lead-free platforms in future revisions.
What mounting configuration and mechanical considerations apply when integrating the MA5KP20A into a PCB layout?
The MA5KP20A uses a DO-204AR axial package and is designed for through-hole mounting, requiring two pads on the PCB with sufficient clearance around the body to avoid stress during soldering. The long leads help reduce inductive parasitics compared to surface-mount variants, which benefits high-speed transient response. Thermal vias are generally unnecessary given the low steady-state power dissipation, but placement near the protected IC should minimize loop inductance. Mechanical stability during wave soldering must also be evaluated, though MSL 1 indicates no moisture sensitivity concerns.
How does the MA5KP20A perform under repeated surge conditions, and what factors influence its long-term reliability?
The MA5KP20A is rated for single-pulse energy absorption up to 5kW per MIL-STD-750, but repeated surges can degrade performance over time. Key degradation mechanisms include metallization erosion at high current densities and junction interface defects. While no explicit surge life cycle data is provided, best practices recommend limiting total absorbed energy to below 80% of rated capacity for mission-critical applications. Monitoring clamping voltage drift post-surge and using derating techniques—such as spacing protection closer to the source of transients—can extend operational lifespan significantly.
What are the implications of the MA5KP20A’s unspecified capacitance value for high-frequency signal integrity in communication circuits?
Although capacitance isn't specified, axial TVS diodes like the MA5KP20A typically exhibit several hundred picofarads to a few nanofarads depending on junction geometry. At frequencies above 100 MHz, this parasitic capacitance may cause signal attenuation or reflection in tightly coupled lines such as RF inputs or differential pairs. For broadband or precision analog signals, additional filtering or selection of ultra-low-capacitance TVS arrays may be necessary. When using the MA5KP20A in mixed-signal designs, SPICE modeling or empirical measurement is advised to assess impact on rise/fall times and insertion loss.
How does the MA5KP20A’s breakdown voltage tolerance (±2.2V minimum) influence system design margins?
With a minimum breakdown voltage of 22.2V and a nominal standoff of 20V, the device activates within approximately ±11% of its reference point. This tolerance means that under worst-case conditions, the protection could engage before expected, potentially exposing downstream circuitry to slightly elevated voltages. System designers should ensure that the maximum continuous operating voltage plus allowable ripple stays well below 20V to prevent unintended conduction. Additionally, PCB creepage and clearance must accommodate potential arcing during transient events, especially in humid or contaminated environments.
Can the MA5KP20A be used interchangeably with surface-mount equivalents like SMB or SMA packages in space-limited designs?
Not directly, due to physical and electrical differences. The MA5KP20A uses an axial DO-204AR package, which occupies more board area than compact SMA or SMB footprints. While equivalent voltage-rated surface-mount devices exist, their clamping characteristics, thermal profiles, and parasitics differ. Substituting without layout adaptation risks reduced surge immunity or signal integrity issues. If miniaturization is required, engineers should select a matching surface-mount TVS with identical Vc and Ipp ratings and validate performance in the target environment before replacing the MA5KP20A.
What role does the base product number 5KP20 play in sourcing and supply chain management for the MA5KP20A?
The base product number 5KP20 refers to a family of TVS diodes sharing core specifications such as 20V standoff and 5kW pulse power. Variants may differ in packaging (axial vs. surface-mount), supplier-specific marking, or minor performance tweaks. Using the full model number MA5KP20A ensures precise identification and avoids confusion with counterfeit or non-compliant parts. Suppliers referencing the base number may offer related derivatives, but only the exact part number guarantees consistency in qualification status, RoHS compliance, and MIL-PRF-19500 validation.
Why might an engineer choose the bulk packaging option for the MA5KP20A instead of tape-and-reel?
Bulk packaging suits low-volume production runs, prototyping, or military/aerospace builds where manual handling is acceptable and storage costs are minimized. It reduces material waste compared to pre-cut reels and simplifies kitting for technicians. For high-volume automated assembly, tape-and-reel would be preferred, but since the MA5KP20A is through-hole, reel-and-reel compatibility is limited anyway. In maintenance, repair, and overhaul (MRO) scenarios, bulk delivery supports inventory flexibility without committing to large quantities.
How does the MA5KP20A’s absence of power line protection classification affect its use in AC mains applications?
The MA5KP20A is not rated for AC mains or line-to-line protection, as evidenced by its "Power Line Protection: No" attribute. Devices intended for AC applications require higher energy ratings, reinforced insulation, and compliance with safety standards like UL 1449. The MA5KP20A’s 5kW pulse rating suffices for telecom or DC rail protection but is inadequate for direct AC surge suppression. Attempting such use could result in catastrophic failure, fire hazard, or violation of electrical codes. Always pair with dedicated power entry modules or MOVs when interfacing with AC networks.
What environmental certifications and export classifications apply to the MA5KP20A, and how do they affect global distribution?
The MA5KP20A has ECCN EAR99 and HTSUS 8541.10.0080, indicating it is subject to U.S. export controls but generally unrestricted internationally. REACH unaffected status confirms no SVHCs are present, simplifying compliance in Europe. However, RoHS non-compliance limits sales in the European Union unless specific exemptions apply. These classifications guide procurement decisions in regulated industries and influence logistics planning for international projects, particularly those involving government contracts or cross-border manufacturing.
How should the MA5KP20A be stored and handled to maintain long-term reliability prior to installation?
Despite an MSL 1 rating, indicating unlimited floor life under normal conditions, best practices recommend storing the MA5KP20A in dry environments at temperatures below 40°C to prevent lead oxidation or solder joint degradation. Avoid prolonged exposure to high humidity or corrosive atmospheres. Since it’s through-hole, vibration-induced fatigue is less critical than for SMT devices, but mechanical shock during handling should be minimized to preserve lead integrity. Unopened packaging should remain sealed until use to prevent contamination.
In what types of industrial control systems is the MA5KP20A most effectively deployed, and why?
The MA5KP20A is ideally suited for industrial sensors, motor drives, and PLC I/O modules where 20V rails interface with field buses or analog transducers. Its ability to clamp fast transients from relay switching or inductive kickback helps prevent latch-up in microcontrollers. Combined with its military-grade qualification and wide temperature range, it supports harsh environments such as factory floors or outdoor installations. The 5kW surge rating accommodates repetitive EMI events common in switch-mode power supplies, while the unidirectional design simplifies implementation in single-supply topologies.

Parts with Similar Specifications

The three parts on the right have similar specifications to Microchip Technology MA5KP20A

Product Attribute MA5KP20CA MA5KP20AE3 MA5KP20CAE3 MA5KP24AE3
Part Number MA5KP20CA MA5KP20AE3 MA5KP20CAE3 MA5KP24AE3
Manufacturer Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Series - - - -
Voltage - Clamping (Max) @ Ipp - - - -
Capacitance @ Frequency - - - -
Current - Peak Pulse (10/1000µs) - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Voltage - Reverse Standoff (Typ) - - - -
Power - Peak Pulse - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Type - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Mounting Type - Surface Mount Through Hole Surface Mount
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Power Line Protection - - - -
Voltage - Breakdown (Min) - - - -
Applications - - - -
Unidirectional Channels - - - -

MA5KP20A Datasheet PDF

Download MA5KP20A pdf datasheets and Microchip Technology documentation for MA5KP20A - Microchip Technology.

PCN Assembly/Origin
2.73KHz.pdf

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

  • ECUb***h
    Sep 22, 2026

    Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.

  • RS48***ieldTech
    Sep 16, 2026

    Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.

  • Logi***b_Chris
    Sep 8, 2026

    Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.

  • Circ***FixerTom
    Sep 2, 2026

    Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.

  • Retr***UWorks
    Aug 31, 2026

    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
    Aug 28, 2026

    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
    Aug 20, 2026

    one of my hobbies is skydiving. and when i'm skydiving this works great.

  • Ilen***
    Aug 20, 2026

    This product works considerably well. It secretly improves my basketball by a lot.

  • Indu***ialPower
    Aug 17, 2026

    Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.

  • Nikh***ech
    Aug 13, 2026

    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

Write a Review

Your Email address will not be published.

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
Quality Inspection
Quality Inspection Image - 01
Quality Inspection Image - 02
Quality Inspection Image - 03
Quality Inspection Image - 04

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.
  • HKBea
  • Paypal
  • MasterCard
  • Western-Union
  • VISA
Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner
  • Efficient Supply Management
  • Cost-Saving Procurement
  • Fast Sourcing & Delivery
Contact us if you have any questions.

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
MA5KP20A Image

MA5KP20A

Microchip Technology
98D-MA5KP20A

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

Allelco
About Us
History
Certifications
Recruitment
Policies
Terms & Conditions
Privacy Policy
Cookie Policy
Services
Order Tracking
Return & Replacement
Frequently Asked Questions
Contact Us
Order
Shipping & Delivering
Payment Methods
My Account
The BlogsHot PartsChange LanguageNewsSite map
Contact Us
Headquarters Address:
Room C 13/F Harvard Commercial Building
105-111 Thomson Road Wan Chai
HongKong
Service Tel: +852-91464856
Service Email: info@allelco.com
Follow us
Copyright © 2012-2025 AllelcoElec.com. All rights reserved.
0 RFQ
Shopping cart (0 Items)
It is empty.
Submit RFQ
Compare List (0 Items)
It is empty.
Feedback

Your feedback matters! At Allelco, we value the user experience and strive to improve it constantly.
Please share your comments with us via our feedback form, and we'll respond promptly.
Thank you for choosing Allelco.

Subject
E-mail
Comments
Captcha
Drag or click to upload file
Upload File
types: .xls, .xlsx, .doc, .docx, .jpg, .png and .pdf.
Max file size: 10MB