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HomeProductsCircuit ProtectionTVS - DiodesSMBJ15CAHR5G
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SMBJ15CAHR5G - TSC (Taiwan Semiconductor)

Manufacturer Part Number
SMBJ15CAHR5G
Manufacturer
Taiwan Semiconductor
Allelco Part Number
98D-SMBJ15CAHR5G
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
37,685 pcs available, New & Original
Parts Description
TVS DIODE 15V 24.4V DO214AA
Package
DO-214AA (SMB)
Data sheet
SMBJ15CAHR5G.pdf
RoHs Status
Lead free / RoHS Compliant
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In stock: 37685
  • Unit Price: $0.239
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $0.239 $0.24
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

SMBJ15CAHR5G Tech Specifications
TSC (Taiwan Semiconductor) - SMBJ15CAHR5G technical specifications, attributes, parameters and parts with similar specifications to TSC (Taiwan Semiconductor) - SMBJ15CAHR5G

Product Attribute Attribute Value
Manufacturer Taiwan Semiconductor
Voltage - Reverse Standoff (Typ) 15V
Voltage - Clamping (Max) @ Ipp 24.4V
Voltage - Breakdown (Min) 16.7V
Type Zener
Supplier Device Package DO-214AA (SMB)
Series Automotive, AEC-Q101, SMBJ
Power Line Protection No
Power - Peak Pulse 600W
Packaging Tape & Reel (TR)
Product Attribute Attribute Value
Package / Case DO-214AA, SMB
Operating Temperature -55°C ~ 150°C (TJ)
Mounting Type Surface Mount
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Manufacturer Standard Lead Time 20 Weeks
Lead Free Status / RoHS Status Lead free / RoHS Compliant
Current - Peak Pulse (10/1000µs) 25.1A
Capacitance @ Frequency -
Bidirectional Channels 1
Applications Automotive

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status Lead free / RoHS Compliant

Frequently Asked Questions(FAQ)

What is the peak pulse power rating and clamping voltage of the SMBJ15CAHR5G TVS diode, and how do these values impact transient suppression performance in automotive applications?
The SMBJ15CAHR5G has a peak pulse power rating of 600W and a maximum clamping voltage of 24.4V at its rated peak pulse current of 25.1A. In automotive environments where transients from load dumps or inductive switching can reach hundreds of volts, this clamping behavior ensures that voltage spikes are limited to 24.4V across the protected circuit. This level of suppression is suitable for protecting downstream components operating near 15V logic thresholds, such as microcontroller I/O pins or sensor interfaces, provided they can tolerate brief excursions up to 24.4V without damage.
How does the reverse standoff voltage of 15V in the SMBJ15CAHR5G compare to its breakdown voltage, and what design implications arise from this difference?
The SMBJ15CAHR5G features a typical reverse standoff voltage of 15V and a minimum breakdown voltage of 16.7V, indicating a narrow operational window before active clamping begins. Designers must ensure that normal operating conditions remain below 15V to avoid triggering conduction unnecessarily, while also accounting for component tolerance and temperature drift. Since semiconductor voltages can shift with temperature, systems operating close to 15V may experience earlier-than-expected activation under cold conditions, requiring margin in system-level voltage budgets.
Can the SMBJ15CAHR5G be used for bidirectional protection on CAN bus lines in automotive ECUs, and what considerations apply given its package and mounting type?
Yes, the SMBJ15CAHR5G supports bidirectional transient suppression due to its Zener-based bidirectional channel configuration, making it suitable for protecting differential signals like those on CAN high and low lines. Its DO-214AA (SMB) surface mount package allows compact PCB integration, which is advantageous in space-constrained ECU modules. However, designers should verify trace layout and grounding to minimize parasitic inductance, as high dI/dt events can elevate local impedance and reduce effective clamping speed during fast transients like ISO 7637-2 pulses.
What distinguishes the SMBJ15CAHR5G from unidirectional TVS diodes with similar voltage ratings, especially in terms of failure modes and system reliability?
Unlike unidirectional devices, the SMBJ15CAHR5G’s bidirectional nature means it responds symmetrically to positive and negative polarity surges, offering balanced protection in floating or unbalanced signal lines. This symmetry reduces risk asymmetry in failure mechanisms during repeated stress cycles. Additionally, its AEC-Q101 qualification and automotive-grade rating imply rigorous testing for thermal cycling, humidity resistance, and surge endurance—critical factors when selecting components for production vehicles where long-term reliability outweighs cost savings from non-automotive alternatives.
How does the capacitance of the SMBJ15CAHR5G affect signal integrity in high-speed communication interfaces like LIN or FlexRay networks?
While the datasheet does not specify capacitance, typical SMBJ series diodes exhibit junction capacitance in the low picofarad range, often below 10pF. For high-speed automotive buses such as LIN running at 10–20 kbps or FlexRay at several Mbps, this minimal capacitance has negligible impact on signal rise times or attenuation. Thus, the SMBJ15CAHR5G remains viable for protecting high-speed digital lines without introducing appreciable distortion, provided placement is close to connectors or connectors themselves to maximize transient filtering effectiveness.
Is the SMBJ15CAHR5G suitable for protecting 12V battery rails against load dump events per ISO 7637-2, and why or why not?
The SMBJ15CAHR5G is designed for 15V standoff applications, whereas standard vehicle battery rails operate at 12V nominal. Although it could technically survive brief exposure to 12V steady states, prolonged operation near 15V may degrade performance over time due to leakage current increase or early aging. Furthermore, load dump transients often exceed 40V and last tens of milliseconds—well beyond the 600W pulse capability of this device. Therefore, higher-power TVS arrays rated for 36V or 40V standoff are more appropriate for direct battery rail protection.
What role does the Moisture Sensitivity Level (MSL) 1 classification play in the manufacturing process control for the SMBJ15CAHR5G?
With an MSL 1 rating, the SMBJ15CAHR5G requires no special handling precautions related to moisture absorption before reflow soldering. This simplifies assembly logistics and reduces scheduling constraints in high-volume automotive manufacturing, where lead-free reflow profiles are standard. Manufacturers can store parts indefinitely at ambient conditions without baking, minimizing production bottlenecks associated with humidity-sensitive components.
How does the operating temperature range of -55°C to 150°C (junction temperature) influence the reliability of the SMBJ15CAHR5G in under-hood automotive applications?
The wide junction temperature range reflects robust semiconductor construction capable of enduring both arctic startup conditions and sustained engine bay heat. At 150°C, the device maintains electrical stability, though clamping voltage and breakdown thresholds may shift slightly due to intrinsic carrier effects. Engineers should still apply derating guidelines—especially during high-current surge events—to prevent thermal runaway, particularly since junction-to-case thermal resistance affects how quickly heat dissipates through the SMB package during repetitive surges.
Why might a designer choose the SMBJ15CAHR5G over a smaller form factor TVS like SOD-323 despite increased board area requirements?
The SMBJ15CAHR5G’s DO-214AA package offers superior thermal mass and current-handling capability compared to miniature SOD-323 variants. When protecting high-impedance nodes exposed to fast transients (e.g., LIN wake-up lines), the larger footprint enables better heat sinking and lower thermal resistance, improving surge resilience. Additionally, its standardized DO-214AA footprint aligns with industry practices, easing procurement and ensuring interchangeability in legacy designs—factors critical in automotive platforms with long service lives and constrained redesign cycles.
Does the SMBJ15CAHR5G require external snubbing circuitry when used to protect MOSFET gate drivers in motor control circuits?
Generally, no—the SMBJ15CAHR5G alone provides adequate transient suppression for gate driver inputs if properly positioned within 1–2 cm of the IC. Its fast response time (<1ns typical) and bidirectional action mitigate voltage overshoots caused by parasitic inductance during rapid MOSFET switching. However, in cases involving very long traces (>10cm) or high dv/dt environments, adding a small ceramic capacitor (e.g., 100nF X7R) in parallel may further dampen oscillations without compromising ESD performance.
How does the RoHS3 compliance status of the SMBJ15CAHR5G impact supply chain documentation and regulatory reporting for global automotive OEMs?
RoHS3 compliance confirms adherence to the latest European Union directive, including restrictions on specific hazardous substances and mandatory labeling. For OEMs sourcing the SMBJ15CAHR5G, this simplifies compliance audits and avoids potential penalties during vehicle certification. Documentation typically includes material declarations (e.g., SVHC lists), which distributors provide upon request, streamlining supply chain transparency required by tier-1 suppliers under ISO/TS 16949 quality systems.
What are the key differences between the SMBJ15CAHR5G and the standard SMBJ15CA variant in terms of manufacturing traceability and quality assurance?
The “HR5G” suffix denotes enhanced automotive qualification under AEC-Q101, implying additional screening such as full parametric testing, accelerated life testing, and defect scanning—beyond standard commercial grades. While the electrical characteristics remain identical, the HR5G version undergoes stricter lot acceptance protocols, ensuring consistency across batches used in safety-critical systems. This makes the SMBJ15CAHR5G preferable for production builds requiring certified components, even if initial prototypes use non-HR versions.
In what scenarios would the SMBJ15CAHR5G be preferred over a polymer-based TVS solution for protecting analog sensor inputs?
The SMBJ15CAHR5G is favored when robustness to repetitive surges, fast response, and high peak currents (up to 25.1A) are essential—common in industrial or automotive sensor networks exposed to EMI or inductive kickback. Polymer TVS devices offer lower capacitance but slower response and less surge energy handling; thus, for applications like O2 sensor lines or position sensors subject to mechanical vibration and transient noise, the diode-type SMBJ15CAHR5G provides more predictable clamping behavior and proven field reliability.
How does the absence of power line protection designation affect the suitability of the SMBJ15CAHR5G for use on switched-mode power supply input lines?
The lack of power line protection indicates the SMBJ15CAHR5G is optimized for signal-line or low-energy transient suppression rather than sustained overvoltage conditions. On SMPS input lines experiencing continuous ripple or regulated overvoltage, dedicated MOVs or crowbar circuits are more appropriate. Using the SMBJ15CAHR5G here risks premature degradation from prolonged conduction, so it should only be applied where transients are infrequent and energy-limited—such as near connectors or communication ports—not across bulk input filtering stages.

Parts with Similar Specifications

The three parts on the right have similar specifications to TSC (Taiwan Semiconductor) SMBJ15CAHR5G

Product Attribute SMBJ15CAHM4G SMBJ15CAHE3/5B SMBJ15CAHE3/52 SMBJ15CAHE3_A/I
Part Number SMBJ15CAHM4G SMBJ15CAHE3/5B SMBJ15CAHE3/52 SMBJ15CAHE3_A/I
Manufacturer Taiwan Semiconductor Corporation Vishay General Semiconductor - Diodes Division Vishay General Semiconductor - Diodes Division Vishay General Semiconductor - Diodes Division
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Voltage - Breakdown (Min) - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Power Line Protection - - - -
Moisture Sensitivity Level (MSL) - - - -
Voltage - Clamping (Max) @ Ipp - - - -
Manufacturer Standard Lead Time - - - -
Current - Peak Pulse (10/1000µs) - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Power - Peak Pulse - - - -
Packaging - - - -
Lead Free Status / RoHS Status - - - -
Applications - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Reverse Standoff (Typ) - - - -
Bidirectional Channels - - - -
Type - - - -
Capacitance @ Frequency - - - -
Series - - - -

SMBJ15CAHR5G Datasheet PDF

Download SMBJ15CAHR5G pdf datasheets and TSC (Taiwan Semiconductor) documentation for SMBJ15CAHR5G - TSC (Taiwan Semiconductor).

Datasheets
SMBJ5.0(A) - SMBJ170(A).pdf

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Customer Reviews

Evaluation: 10 Articles

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

  • Kevi***.
    Mar 17, 2026

    Fast switching and stable output. Very satisfied with this IC

  • Daou***hekebkeb
    Jun 16, 2024

    I had a great experience purchasing items from Allelcoelec, I recommend

  • Uri ***al
    Jun 19, 2024

    Good comunication,
    Transpnt regarding the process and price.

  • Yaqu***l Ali
    Jun 19, 2024

    Providing reasonable prices, regular follow-up of orders, providing accurate and regular invoices, timely delivery of goods, excellent customer service and providing original goods and best quality materials.

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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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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.
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SMBJ15CAHR5G Image

SMBJ15CAHR5G

TSC (Taiwan Semiconductor)
98D-SMBJ15CAHR5G

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