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HomeProductsCircuit ProtectionTVS - DiodesMX15KP48A
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MX15KP48A - Microchip Technology

Manufacturer Part Number
MX15KP48A
Manufacturer
Microchip Technology
Allelco Part Number
98D-MX15KP48A
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
36,768 pcs available, New & Original
Parts Description
TVS DIODE 48VWM 77.7VC CASE 5A
Package
Case 5A (DO-204AR)
Data sheet
MX15KP48A.pdf

PCN Assembly/Origin

2.73KHz.pdf
RoHs Status
 
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Specifications

MX15KP48A Tech Specifications
Microchip Technology - MX15KP48A technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology - MX15KP48A

Product Attribute Attribute Value
Manufacturer Microchip Technology
Voltage - Reverse Standoff (Typ) 48V
Voltage - Clamping (Max) @ Ipp 77.7V
Voltage - Breakdown (Min) 53.3V
Unidirectional Channels 1
Type Zener
Supplier Device Package Case 5A (DO-204AR)
Series Military, MIL-PRF-19500
Power Line Protection No
Product Attribute Attribute Value
Power - Peak Pulse 15000W (15kW)
Package / Case DO-204AR, Axial
Package Bulk
Operating Temperature -65°C ~ 150°C (TJ)
Mounting Type Through Hole
Current - Peak Pulse (10/1000µs) 193A
Capacitance @ Frequency -
Base Product Number 15KP48
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 is the peak pulse power rating and how does it affect protection capability for the MX15KP48A TVS diode?
The MX15KP48A has a peak pulse power rating of 15,000W (15kW) as specified for a 10/1000μs waveform. This value indicates the maximum energy the device can absorb in a single transient event without sustaining damage. In practical terms, during a surge condition lasting milliseconds, the device must dissipate this energy while clamping the voltage to safe levels across the protected circuit. Designers must ensure that the expected surge energy in their application does not exceed 15kW, and they should consider the duty cycle and repetition rate of transients when evaluating long-term reliability.
How does the clamping voltage of 77.7V compare to the reverse standoff voltage for the MX15KP48A, and what implications does this have for circuit protection design?
The MX15KP48A has a reverse standoff voltage of 48V and a maximum clamping voltage of 77.7V at 193A peak pulse current. This 31V difference represents the voltage overshoot allowed across the protected load during a surge event. For sensitive circuits operating near 48V logic thresholds or analog components with tight tolerance windows, this voltage swing may exceed acceptable limits and necessitate additional downstream regulation or filtering. Engineers must verify that 77.7V remains within the absolute maximum ratings of all protected nodes and consider whether supplemental suppression stages are required to meet system-level voltage stress constraints.
Can the MX15KP48A be used in bidirectional transient protection applications, and if so, what configuration would be required?
The MX15KP48A is unidirectional, meaning it conducts only in one direction relative to its cathode polarity. To achieve bidirectional protection—such as for Ethernet lines subject to both positive and negative surges—two MX15KP48A devices would need to be connected back-to-back, with each handling one polarity of the transient. However, this arrangement introduces asymmetry in response times and clamping performance due to differences in internal junction characteristics. Alternatively, a dedicated bidirectional TVS array might provide more balanced performance and better integration for such applications.
What are the key differences between the MX15KP48A and a similar 15KP series device rated at 45V standoff voltage?
While both share the same 15kW peak pulse power and package type, the MX15KP48A operates at a higher standoff voltage (48V vs. 45V), resulting in a correspondingly higher breakdown voltage (~53.3V vs. ~50V). The clamping voltage will also be slightly elevated in the 48V version under identical surge conditions. For systems where the nominal operating voltage is closer to 45V, using the 48V part increases the risk of inadvertent triggering due to noise or voltage drift, potentially compromising signal integrity or causing false activation during normal operation.
Is the MX15KP48A suitable for automotive EMC compliance testing, and what limitations should be considered?
Although the MX15KP48A meets military qualification standards (MIL-PRF-19500), it is not specifically certified for automotive environments like AEC-Q101. Automotive applications often require stricter thermal cycling, vibration resistance, and extended temperature range validation beyond standard industrial grades. Additionally, the device’s RoHS non-compliance status may conflict with newer automotive component sourcing policies mandating full halogen-free and lead-free construction. Therefore, while usable in rugged industrial settings, substitution into automotive designs should involve formal qualification testing unless explicitly approved by the OEM.
How does the operating temperature range influence derating practices for the MX15KP48A in high-heat environments?
With an operating junction temperature range from -65°C to 150°C, the MX15KP48A supports extreme environmental conditions. However, continuous operation near 150°C significantly reduces the available margin for peak pulse energy absorption due to thermal time constants and reduced carrier mobility. In practice, designers often apply a derating factor—typically reducing allowable IPP by 1–2% per degree above 125°C—to ensure long-term reliability. For enclosures with poor airflow or high ambient temperatures, supplemental heatsinking or layout optimization may be necessary to maintain junction temperature well below maximum ratings during fault events.
What capacitance characteristics should be assumed for the MX15KP48A when evaluating signal integrity on high-speed communication lines?
Although no explicit capacitance value is listed, typical DO-204AR axial TVS diodes like the MX15KP48A exhibit junction capacitance in the range of 100–250 pF depending on bias conditions. At frequencies above 1 MHz, this capacitance can form a low-pass filter effect with source impedance, attenuating fast edges and distorting waveforms. On lines such as RS-485 or CAN bus running at multi-Mbps rates, even small capacitive loading may necessitate impedance matching adjustments or selection of ultra-low-capacitance variants if signal fidelity is critical.
How does the mounting style (through-hole, DO-204AR) impact PCB layout and thermal management for the MX15KP48A?
The through-hole DO-204AR package allows mechanical anchoring to the board but requires careful pad design to avoid solder wicking and cracking. Its axial leads also limit routing density compared to surface-mount alternatives. Thermally, the lack of direct copper connection means heat dissipation relies heavily on conduction through the leads and surrounding traces. In high-surge-density applications, increasing trace area or adding vias adjacent to the component improves heat sinking. Layout must also ensure adequate creepage distance to prevent arcing in humid or polluted environments.
Why is the MX15KP48A RoHS non-compliant despite being widely used in industrial systems?
The MX15KP48A likely contains lead in its die attach or metallization layers, which exempts it from certain RoHS restrictions under legacy semiconductor provisions. Many military-grade parts retain lead-based finishes for enhanced reliability under thermal stress. While acceptable in defense, aerospace, and harsh-industrial sectors, this status restricts use in consumer electronics or regions enforcing strict RoHS compliance. Users should confirm current manufacturing status from the latest datasheet revision, as Microchip periodically updates part configurations based on supply chain and regulatory demands.
When comparing the MX15KP48A to surface-mount equivalents like SMAJ or SMBJ series TVS diodes, what trade-offs emerge in high-reliability designs?
Surface-mount packages offer superior thermal cycling performance and smaller parasitic inductance, improving transient response speed and reducing voltage overshoot. However, they typically support lower power ratings (e.g., 400W–600W for SMAJ) compared to the MX15KP48A’s 15kW capability. For applications requiring robust energy absorption without complex PCBs, the MX15KP48A’s through-hole design remains advantageous. The choice hinges on balancing surge robustness against space constraints, assembly automation, and long-term solder joint fatigue risks inherent in SMT technologies.

Parts with Similar Specifications

The three parts on the right have similar specifications to Microchip Technology MX15KP48A

Product Attribute MX15KP48CA/TR MX15KP48CA MX15KP48A/TR MX15KP48CAE3
Part Number MX15KP48CA/TR MX15KP48CA MX15KP48A/TR MX15KP48CAE3
Manufacturer Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Mounting Type - Surface Mount Through Hole Surface Mount
Current - Peak Pulse (10/1000µs) - - - -
Voltage - Breakdown (Min) - - - -
Applications - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Capacitance @ Frequency - - - -
Unidirectional Channels - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Series - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Voltage - Clamping (Max) @ Ipp - - - -
Type - - - -
Power Line Protection - - - -
Power - Peak Pulse - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Voltage - Reverse Standoff (Typ) - - - -

MX15KP48A Datasheet PDF

Download MX15KP48A pdf datasheets and Microchip Technology documentation for MX15KP48A - Microchip Technology.

PCN Assembly/Origin
2.73KHz.pdf

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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.

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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.

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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.
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
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Electrostatic Discharge Protection and Handling

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MX15KP48A Image

MX15KP48A

Microchip Technology
98D-MX15KP48A

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