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Vishay General Semiconductor - Diodes Division SMCJ15CAHM3/H
- Part No.:
- SMCJ15CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15CAHM3/H.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,500
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Product details
Overview
SMCJ15CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 1500 W peak pulse power with 24.4 V maximum clamping voltage at 61.5 A peak pulse current and 15 V standoff voltage. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the SMCJ15CAHM3/H datasheet, SMCJ15CAHM3/H pinout, SMCJ15CAHM3/H application, or SMCJ15CAHM3/H equivalent, this part delivers AEC-Q101 qualification, halogen-free RoHS compliance, and bidirectional surge suppression for 10/1000 µs waveforms in space-constrained PCB layouts.
Technical Context
The SMCJ15CAHM3/H operates as a bidirectional avalanche diode with symmetrical breakdown characteristics-minimum VBR of 16.7 V and maximum of 18.5 V at 1 mA test current-enabling equal clamping in both polarities. Its low incremental surge resistance and fast response time ensure effective protection against ESD, lightning-induced surges, and inductive switching transients.
Thermally, it features RθJA = 75 °C/W and RθJL = 15 °C/W, supporting operation from −55 °C to +150 °C junction temperature. The device meets MSL level 1 per J-STD-020 and is rated for 200 A non-repetitive forward surge (unidirectional only), though its bidirectional configuration eliminates polarity marking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 15 V - Maximum continuous reverse operating voltage before clamping begins |
| Breakdown Voltage (VBR) | 16.7–18.5 V at 1 mA - Ensures reliable avalanche initiation within tight tolerance band |
| Clamping Voltage (VC) | 24.4 V at 61.5 A (10/1000 µs) - Limits transient voltage seen by protected circuitry |
| Peak Pulse Power (PPPM) | 1500 W - Sustains high-energy transients without failure under standard waveform |
| Operating Temperature | −55 °C to +150 °C - Supports under-hood automotive and industrial ambient conditions |
| Package | SMC (DO-214AB) - Surface-mount footprint compatible with automated assembly and 8 mm × 8 mm thermal pads |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
SMCJ15CAHM3/H uses the SMC (DO-214AB) package: molded plastic case with matte tin-plated leads, UL 94 V-0 rated, 0.305" × 0.220" body size, and recommended 8.0 mm × 8.0 mm copper pad layout per terminal for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bidirectional) | Surge conduction path | No polarity marking; symmetric terminals conduct equally in either direction during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection on AC-coupled or floating signal lines without polarity concerns |
| 1500 W peak pulse rating | Withstands high-energy transients common in automotive load-dump and industrial motor drive environments |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including temperature cycling, humidity testing, and long-term reliability |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global OEM supply chains and end-of-life handling |
| Low clamping ratio (VC/VWM ≈ 1.63) | Minimizes voltage overshoot during clamping, reducing stress on downstream ICs and MOSFETs |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power rail inputs to clamp positive and negative spikes. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers during ISO 7637-2 pulse 5a events. | Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance TVS on 4–20 mA or 0–10 V signal paths to suppress ESD and field wiring surges. Use Value: Maintains signal integrity while limiting transient voltage to <25 V, preserving ADC input range and isolation barrier safety margins. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Front-end protection on PoE-powered Ethernet switches exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional TVS on DC bias rails feeding PHY ICs and magnetics. Use Value: Absorbs up to 1500 W of surge energy without degradation, meeting IEC 61000-4-5 Level 4 requirements. | Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters after rectification. IC Role / Device Role / Timing Role: Clamping device across bulk capacitor to prevent overvoltage during no-load or fault conditions. Use Value: Limits voltage excursion to ≤24.4 V during transient events, safeguarding synchronous rectifier MOSFETs and controller ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CA | Lower PPPM (400 W), same VWM/VC, SMA package (smaller thermal mass) | Not suitable for high-energy automotive load-dump; limited to consumer-grade surge immunity | Select when board space is critical and surge energy is ≤400 W |
| SMCJ15A | Unidirectional version; cathode band marking; identical VWM, VBR, VC, and PPPM | Requires polarity-aware placement; unsuitable for AC or floating nodes | Choose only for DC-rail protection where polarity is fixed and known |
Compared with SMAJ15CA and SMCJ15A, the SMCJ15CAHM3/H uniquely combines bidirectional operation, 1500 W surge capability, and AEC-Q101 qualification-making it the only option among the three validated for under-hood automotive use with no polarity constraints.
Availability
SMCJ15CAHM3/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, telecom line card surge protection, and consumer power adapter input stage applications requiring stable component supply and full traceability.
Supply support for SMCJ15CAHM3/H includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure where robustness and AEC-Q101 validation are mandatory.
FAQ
What does the 'CA' suffix indicate in SMCJ15CAHM3/H?
The 'CA' suffix in SMCJ15CAHM3/H denotes a bidirectional configuration-meaning the device provides symmetrical transient voltage suppression in both polarities without cathode/anode distinction. This eliminates polarity marking on the SMC package and enables use on AC-coupled, floating, or differential signal lines where voltage reversals occur.
Is SMCJ15CAHM3/H suitable for automotive applications?
Yes, SMCJ15CAHM3/H is AEC-Q101 qualified (indicated by the 'HM3' suffix), meaning it has passed rigorous automotive reliability tests including temperature cycling, highly accelerated life testing, and humidity testing. It is approved for under-hood and powertrain-related applications requiring sustained operation from −55 °C to +150 °C.
How does the clamping voltage of SMCJ15CAHM3/H compare to its standoff voltage?
The SMCJ15CAHM3/H has a standoff voltage (VWM) of 15 V and a maximum clamping voltage (VC) of 24.4 V at 61.5 A. This 1.63× clamping ratio ensures that protected circuits experience minimal overvoltage during surge events-critical for safeguarding 24 V-tolerant logic inputs and gate drivers without exceeding safe operating limits.
What is the thermal performance of SMCJ15CAHM3/H on standard PCB layout?
When mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, SMCJ15CAHM3/H achieves RθJA = 75 °C/W and RθJL = 15 °C/W. This allows continuous power dissipation of 6.5 W at TA = 50 °C and supports repeated surge events without thermal runaway in typical industrial PCB stack-ups.
Does SMCJ15CAHM3/H require polarity-aware PCB layout?
No-SMCJ15CAHM3/H is a bidirectional TVS diode with no polarity marking on the SMC (DO-214AB) package. Its symmetrical breakdown and clamping behavior allow orientation-agnostic placement on PCBs, simplifying layout and eliminating risk of reverse installation errors in high-volume manufacturing.
SMCJ15CAHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 61.5A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ15CAHM3/H FAQ
1.How can I place an order for SMCJ15CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15CAHM3/H on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMCJ15CAHM3/H reliable?
The price and inventory of SMCJ15CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ15CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMCJ15CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15CAHM3/H?
SMCJ15CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15CAHM3/H order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMCJ15CAHM3/H?
For technical support, including SMCJ15CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15CAHM3/H requirements.
6.How does Aetrix verify that SMCJ15CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMCJ15CAHM3/H products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMCJ15CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMCJ15CAHM3/H?
All SMCJ15CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15CAHM3/H, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMCJ15CAHM3/H part is unused and in its original packaging.
Return procedure for SMCJ15CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ15CAHM3/H Tags
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