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Vishay General Semiconductor - Diodes Division SMCJ15AHM3/H
- Part No.:
- SMCJ15AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15AHM3/H.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,954
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Product details
Overview
SMCJ15AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 15 V standoff voltage, 24.4 V clamping voltage at 61.5 A peak pulse current, and 1500 W peak pulse power rating. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics against inductive switching transients.
For engineers reviewing the SMCJ15AHM3/H datasheet, SMCJ15AHM3/H pinout, SMCJ15AHM3/H application, or SMCJ15AHM3/H equivalent, key selection criteria include unidirectional polarity, 15 V stand-off voltage, 24.4 V clamping performance under 10/1000 μs surge, AEC-Q101 qualification status, and halogen-free RoHS-compliant construction per HM3 suffix.
Technical Context
This TVS diode operates as a voltage-clamping protection device that remains high-impedance below 15 V reverse stand-off voltage (VWM), then rapidly transitions to low-impedance conduction above its 16.7–18.5 V breakdown range (VBR at 1 mA). Its glass-passivated junction ensures stable avalanche behavior and low incremental surge resistance.
Designed for automated SMT assembly, it meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak, features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and delivers 1500 W peak pulse power dissipation on standard 8.0 mm × 8.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 16.7 V / 18.5 V - Breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 24.4 V - Clamped voltage across device during 61.5 A 10/1000 μs surge, limiting stress on downstream circuitry |
| PPPM | 1500 W - Peak transient energy absorption capability under standardized 10/1000 μs waveform |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm body, optimized for thermal dissipation and board space efficiency |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Construction | Halogen-free, RoHS-compliant - Meets environmental compliance requirements for commercial and automotive production |
Pinout & Package
SMCJ15AHM3/H uses the standard SMC (DO-214AB) package: cathode-indicated by a band on one end; anode at opposite end. Leads are matte tin-plated for solderability per J-STD-002. Polarity marking enables correct orientation during PCB layout and automated placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink | Connected to protected line; conducts transient current to ground when voltage exceeds VBR |
| Anode (unmarked end) | Reference node | Typically tied to system ground or low-impedance return path to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMC package | Enables high-density PCB layouts while maintaining thermal performance via 8 mm² copper pad mounting |
| Glass-passivated junction | Ensures consistent avalanche characteristics, long-term stability, and reduced parameter drift over life |
| 1500 W peak pulse rating | Provides robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) without degradation |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring extended temperature and reliability validation |
| Halogen-free & RoHS | Supports global environmental compliance mandates without compromising surge performance or thermal derating |
Applications
| Automotive Power Distribution | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients up to ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges exceeding 15 V. Use Value: Limits voltage seen by downstream DC/DC converters and microcontrollers to ≤24.4 V during 61.5 A transients, preventing latch-up or oxide damage. | Use Scenario: Safeguarding gate drivers and current-sense amplifiers connected to IGBT half-bridges in variable-frequency drives. IC Role / Device Role / Timing Role: Bidirectional clamping not applicable; SMCJ15AHM3/H used unidirectionally on low-side sense lines referenced to power ground. Use Value: Absorbs 1500 W of inductive kickback energy from motor windings, preserving signal integrity on ±15 V analog sensing paths. |
| Telecom Power Supply Inputs | Consumer Appliance Control Boards |
Use Scenario: Front-end protection for AC/DC adapters and PoE injectors exposed to lightning-induced surges on primary-side rails. IC Role / Device Role / Timing Role: Primary-stage TVS on 12–24 V DC input bus, coordinated with MOVs and GDTs in multi-stage architecture. Use Value: Fast 10/1000 μs response clamps transients before they propagate to secondary-side regulation, reducing need for oversized capacitors. | Use Scenario: Overvoltage protection for microcontroller I/O pins interfacing with relay coils, solenoids, and fan motors in washing machines and HVAC systems. IC Role / Device Role / Timing Role: Localized unidirectional suppression on 5–24 V control lines, mounted adjacent to protected ICs. Use Value: Prevents ESD and inductive spike damage to 3.3 V/5 V logic inputs with <1 μA leakage at 15 V, minimizing standby power impact. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/57T | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA), same VWM/VBR range | Not suitable for >400 W surge events; limited to consumer-grade, lower-energy interfaces | Select when board space is constrained and surge threat level is ≤IEC 61000-4-5 Level 2 |
| SMCJ15AHE3_A/H | Same electrical specs and SMC package, but RoHS-compliant commercial grade (non-halogen-free, non-AEC-Q101) | Lacks automotive qualification and halogen-free certification; acceptable for industrial/commercial use only | Choose for cost-sensitive non-automotive designs where AEC-Q101 and halogen-free are not mandated |
Compared with SMAJ15A-E3/57T and SMCJ15AHE3_A/H, SMCJ15AHM3/H uniquely combines 1500 W surge capacity, AEC-Q101 qualification, and halogen-free construction-making it the only option qualified for high-reliability automotive power domains requiring full environmental compliance.
Availability
SMCJ15AHM3/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive protection, and telecom power supply inputs requiring stable component supply, long lifecycle support, and traceable sourcing.
Supply support for SMCJ15AHM3/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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, thermal performance, and application-specific optimization.
The SMCJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where robustness against repetitive surges and long-term parametric stability are critical.
FAQ
What is the clamping voltage of SMCJ15AHM3/H at its rated peak pulse current?
The SMCJ15AHM3/H has a maximum clamping voltage (VC) of 24.4 V when subjected to its rated peak pulse current (IPPM) of 61.5 A under the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMCJ15AHM3/H maintains this clamping performance across its operational temperature range of –55 °C to +150 °C.
Is SMCJ15AHM3/H suitable for automotive applications?
Yes, SMCJ15AHM3/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive use. It meets stress tests including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev D. The SMCJ15AHM3/H is specified for under-hood and body-control module applications where sustained operation at 150 °C junction temperature and immunity to load-dump transients are required.
What does the "HM3" suffix indicate in SMCJ15AHM3/H?
The "HM3" suffix in SMCJ15AHM3/H denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. Per Vishay's ordering nomenclature, HM3 identifies parts meeting automotive reliability standards while using environmentally compliant materials-distinct from M3 (halogen-free commercial grade) and HE3 (AEC-Q101 commercial grade). The SMCJ15AHM3/H is therefore certified for both automotive qualification and green manufacturing requirements.
How does SMCJ15AHM3/H differ from SMCJ15AHE3_A/H?
SMCJ15AHM3/H and SMCJ15AHE3_A/H share identical electrical specifications and SMC (DO-214AB) packaging, but differ in compliance: SMCJ15AHM3/H is halogen-free and AEC-Q101 qualified, whereas SMCJ15AHE3_A/H is RoHS-compliant and AEC-Q101 qualified but not halogen-free. The SMCJ15AHM3/H meets stricter environmental mandates such as China RoHS II and EU ELV, making it mandatory for certain Tier 1 automotive programs where halogen content is restricted.
What is the thermal resistance of SMCJ15AHM3/H from junction to ambient?
The typical thermal resistance from junction to ambient (RθJA) for SMCJ15AHM3/H is 75 °C/W when mounted on the minimum recommended pad layout (0.31" × 0.31" copper pads per terminal). This value assumes still air convection and is used to calculate junction temperature rise under steady-state power dissipation. For pulsed surge conditions, transient thermal impedance data (Fig. 5 in the datasheet) must be applied to assess short-duration thermal stress on the SMCJ15AHM3/H junction.
SMCJ15AHM3/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:
- 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/H FAQ
1.How can I place an order for SMCJ15AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15AHM3/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/H reliable?
The price and inventory of SMCJ15AHM3/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/H is usually 5 days.
3.What payment methods are accepted for SMCJ15AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15AHM3/H?
SMCJ15AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15AHM3/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/H?
For technical support, including SMCJ15AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15AHM3/H requirements.
6.How does Aetrix verify that SMCJ15AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMCJ15AHM3/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/H meets industry standards.
7.What is the process for return or replacement of SMCJ15AHM3/H?
All SMCJ15AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15AHM3/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/H part is unused and in its original packaging.
Return procedure for SMCJ15AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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