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Vishay General Semiconductor - Diodes Division SMCJ15AHM3_A/H
- Part No.:
- SMCJ15AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15AHM3_A/H.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,234
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Product details
Overview
SMCJ15AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 15 V standoff voltage (VWM), 24.4 V maximum clamping voltage at 61.5 A peak pulse current (10/1000 µs), and 1500 W peak pulse power rating - validated for automotive-grade applications per AEC-Q101 qualification.
For engineers reviewing the SMCJ15AHM3_A/H datasheet, SMCJ15AHM3_A/H pinout, SMCJ15AHM3_A/H application, or SMCJ15AHM3_A/H equivalent, this part delivers verified surge immunity for 12 V automotive electronics, industrial sensor interfaces, and PoE-powered equipment where low clamping voltage, fast response (<1 ns), and halogen-free RoHS compliance are required.
Technical Context
The SMCJ15AHM3_A/H uses a glass-passivated silicon junction optimized for low incremental surge resistance and stable breakdown behavior under repetitive transients. Its unidirectional polarity enables precise cathode-referenced clamping on positive-rail protection paths, with thermal resistance RθJL = 15 °C/W ensuring effective heat transfer to PCB copper pads.
Designed for 10/1000 µs waveform compliance per ANSI/IEEE C62.35, it operates across -55 °C to +150 °C junction temperature range and meets MSL Level 1 (260 °C reflow peak), supporting automated SMT assembly without derating concerns in standard commercial and automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 15 V - defines maximum continuous reverse operating voltage before clamping activation; ensures no leakage interference during normal 12 V system operation. |
| VBR (Breakdown Voltage) | 16.7–18.5 V at 1 mA - tight tolerance window guarantees predictable turn-on threshold for transient suppression. |
| VC (Clamping Voltage) | 24.4 V at 61.5 A (10/1000 µs) - limits downstream IC stress to safe levels during ISO 7637-2 Pulse 1/2a/5a events. |
| PPPM (Peak Pulse Power) | 1500 W - sustains high-energy surges (e.g., load dump up to 35 V/100 ms) without failure when mounted on 8 mm × 8 mm copper pads. |
| ID (Reverse Leakage) | 1.0 µA max at 15 V - negligible standby current draw critical for battery-backed systems and low-power sensors. |
| TJ max | +150 °C - supports under-hood automotive placement and industrial ambient conditions without thermal shutdown. |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTOL, TC, and HTRB. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band; anode and cathode terminals defined per unidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Clamping output node | Connected to protected line (e.g., 12 V rail); conducts surge current to ground when VIN exceeds VBR. |
| Anode | Reference/ground return | Typically tied to system ground plane; completes clamping path and establishes reference for VWM/VBR specification. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & RoHS-compliant | HM3 suffix confirms full compliance with IEC 61249-2-21 and JEDEC J-STD-204, enabling use in green manufacturing programs. |
| Low incremental surge resistance | Enables tighter clamping (24.4 V @ 61.5 A) versus competitive 1500 W TVS devices, reducing voltage overshoot on sensitive 3.3 V/5 V logic rails. |
| Very fast response time | <1 ns turn-on ensures suppression of ESD (IEC 61000-4-2) and fast-rising transients before downstream MOSFETs or MCUs experience gate oxide stress. |
| MSL Level 1 rating | Supports single-reflow assembly at 260 °C peak without moisture-induced popcorning, eliminating pre-bake requirements in high-volume SMT lines. |
| Glass passivated junction | Provides stable leakage performance and long-term reliability under thermal cycling and humidity exposure in automotive and industrial enclosures. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs of body control modules (BCM), infotainment head units, and ADAS camera ECUs against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery input and primary DC/DC converter input stage. Use Value: Clamps ISO 7637-2 Pulse 5a (75 V/400 ms) to ≤24.4 V, preventing overvoltage damage to buck controller ICs and enabling compliance with OEM electrical specifications. |
Use Scenario: Shielding analog outputs (4–20 mA, 0–10 V) and digital I/O (CAN, LIN) of PLC analog I/O modules from field-wiring induced surges. IC Role / Device Role / Timing Role: Point-of-entry transient suppressor on sensor signal traces adjacent to connector interface. Use Value: Limits transient energy to <150 mJ per event while maintaining sub-1 µA leakage, preserving signal integrity and ADC accuracy in precision measurement systems. |
| Telecom Power Feeding Protection | Consumer USB-C Power Delivery Protection |
|
Use Scenario: Safeguarding 48 V DC power feeding circuits in PoE++ (IEEE 802.3bt Type 4) switches and powered devices against lightning-induced surges on Ethernet cables. IC Role / Device Role / Timing Role: Primary overvoltage clamp on PSE/PD front-end rectifier output prior to DC/DC regulation. Use Value: Withstands 1500 W peak pulses without degradation, meeting IEC 61000-4-5 Level 4 (4 kV line-earth) requirements for outdoor telecom infrastructure. |
Use Scenario: Protecting USB-C port VBUS lines in portable monitors, docking stations, and power banks from hot-plug transients and adapter fault conditions. IC Role / Device Role / Timing Role: Secondary-level TVS after primary fuse, placed directly at USB-C receptacle to minimize trace inductance. Use Value: 24.4 V clamping ensures USB PD 3.0 20 V operation remains within safe margin for internal 18 V-rated LDOs and USB-C 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 |
|---|---|---|---|
| SMAJ15AHE3/A | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 100 °C/W), same VWM/VBR range. | Suitable only for lower-energy transients (e.g., ESD-only); not rated for automotive load dump or PoE surges. | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2/4-4; avoid for 12 V automotive or 48 V telecom. |
| SMCJ15AHE3_A/H | Same electrical specs and SMC package, but RoHS-compliant without halogen-free certification (E3 vs HM3). | Acceptable for commercial/industrial use; excluded from automotive programs requiring halogen-free material declarations. | Choose if halogen-free compliance is not mandated; otherwise SMCJ15AHM3_A/H is required for Tier 1 automotive BOMs. |
Compared with SMAJ15AHE3/A and SMCJ15AHE3_A/H, the SMCJ15AHM3_A/H uniquely combines 1500 W surge capability, AEC-Q101 qualification, and halogen-free construction - making it the only option qualified for high-reliability automotive power rail and industrial PoE+ protection where both performance and material compliance are mandatory.
Availability
SMCJ15AHM3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and PoE-powered equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMCJ15AHM3_A/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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The SMCJ series is engineered specifically for high-energy transient suppression in harsh environments - targeting 12 V/24 V/48 V power systems where clamping precision, thermal robustness, and AEC-Q101 validation are non-negotiable.
FAQ
What is the maximum clamping voltage of the SMCJ15AHM3_A/H under standard test conditions?
The SMCJ15AHM3_A/H has a maximum clamping voltage (VC) of 24.4 V when subjected to a 10/1000 µs waveform at 61.5 A peak pulse current. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's official datasheet revision 09-Jan-2024. The clamping performance is guaranteed across the full operating temperature range (-55 °C to +150 °C) and forms the basis for downstream circuit protection design using the SMCJ15AHM3_A/H.
Is the SMCJ15AHM3_A/H qualified for automotive applications?
Yes, the SMCJ15AHM3_A/H is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet under "Mechanical Data" and confirmed in the ordering information table. This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and highly accelerated temperature-humidity stress testing (HAST). The HM3 suffix denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction - making the SMCJ15AHM3_A/H suitable for under-hood and chassis-mounted automotive electronics.
What does the "HM3" suffix indicate in SMCJ15AHM3_A/H?
The "HM3" suffix in SMCJ15AHM3_A/H identifies the part as halogen-free, RoHS-compliant, and AEC-Q101 qualified - distinct from E3 (RoHS only) or HE3 (RoHS + AEC-Q101, but not halogen-free). Per Vishay's documentation, HM3 parts meet JESD201 Class 2 whisker resistance and UL 94 V-0 flammability standards. This suffix directly maps to the "Base P/NHM3_X" designation in the datasheet, confirming material compliance required for Tier 1 automotive programs.
Can the SMCJ15AHM3_A/H be used in bidirectional configurations?
No, the SMCJ15AHM3_A/H is a unidirectional TVS diode, as indicated by its "A" suffix (versus "CA" for bidirectional variants like SMCJ15CA). Its electrical characteristics - including polarity marking (cathode band), forward voltage drop (3.5 V at 100 A), and specified IFSM (200 A) - apply only in the forward direction. Using it in a bidirectional configuration would result in improper clamping behavior and potential failure; bidirectional protection requires the CA-suffixed variant.
What is the recommended PCB pad layout for optimal thermal and surge performance of the SMCJ15AHM3_A/H?
Vishay specifies mounting the SMCJ15AHM3_A/H on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated 1500 W peak pulse power and maintain thermal resistance RθJL = 15 °C/W. The datasheet's "Mounting Pad Layout" diagram shows minimum pad dimensions and recommends connecting pads to internal ground/power planes via multiple thermal vias. Deviating from this layout reduces surge handling capability and risks thermal runaway during repetitive transients - critical for reliable SMCJ15AHM3_A/H operation.
SMCJ15AHM3_A/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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)
SMCJ15AHM3_A/H FAQ
1.How can I place an order for SMCJ15AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15AHM3_A/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 SMCJ15AHM3_A/H reliable?
The price and inventory of SMCJ15AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ15AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ15AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15AHM3_A/H?
SMCJ15AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15AHM3_A/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 SMCJ15AHM3_A/H?
For technical support, including SMCJ15AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15AHM3_A/H requirements.
6.How does Aetrix verify that SMCJ15AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ15AHM3_A/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 SMCJ15AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ15AHM3_A/H?
All SMCJ15AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15AHM3_A/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 SMCJ15AHM3_A/H part is unused and in its original packaging.
Return procedure for SMCJ15AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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