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Vishay General Semiconductor - Diodes Division SMCJ15AHM3_A/I
- Part No.:
- SMCJ15AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15AHM3_A/I.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,859
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Product details
Overview
SMCJ15AHM3_A/I from Vishay General Semiconductor is a unidirectional 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 clamping voltage (VC) at 61.5 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 µs waveform), commonly deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMCJ15AHM3_A/I datasheet, SMCJ15AHM3_A/I pinout, SMCJ15AHM3_A/I application, or SMCJ15AHM3_A/I equivalent, key selection criteria include verified clamping performance under 10/1000 µs transients, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable breakdown behavior and low incremental surge resistance. Its 16.7–18.5 V breakdown voltage (VBR) at 1 mA test current ensures precise triggering above nominal 15 V rail voltage while maintaining low leakage (<1 µA at VWM).
The device is rated for -55 °C to +150 °C operating junction temperature, supports 200 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak, enabling compatibility with standard SMT assembly processes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse working voltage before clamping initiates |
| VC @ IPPM | 24.4 V - Clamped voltage during 61.5 A 10/1000 µs transient, limiting downstream stress |
| PPPM | 1500 W - Peak pulse power handling capability under standardized surge waveform |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on recommended 8 mm × 8 mm copper pads |
| TJ max | +150 °C - Maximum allowable junction temperature for reliable long-term operation |
| ID @ VWM | <1 µA - Reverse leakage current at 15 V, minimizing standby power loss |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
SMCJ15AHM3_A/I uses the SMC (DO-214AB) package: a two-terminal surface-mount device with cathode identified by a band on the body. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, and qualified to JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; forms clamping path when cathode is biased above VBR |
| Cathode | High-side connection point | Marked with band; connects to protected line (e.g., 15 V rail); conducts during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Halogen-free & RoHS-compliant | HM3 suffix confirms compliance with environmental standards and JEDEC J-STD-020 MSL Level 1 |
| Low clamping ratio | VC/VWM = 1.63 enables tighter protection margins versus competing 15 V TVS devices |
| Fast response time | Sub-nanosecond turn-on ensures suppression before sensitive ICs experience overstress |
| High surge current rating | 61.5 A IPPM supports IEC 61000-4-5 Level 4 (4 kV) surge immunity in properly designed layouts |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp transients before LDOs or microcontrollers. Use Value: 24.4 V clamping limits stress on 3.3 V/5 V logic supplies; AEC-Q101 qualification ensures field reliability across temperature extremes. | Use Scenario: 4–20 mA current loop transmitters interfacing with PLC analog inputs. IC Role / Device Role / Timing Role: TVS connected across signal and return lines to absorb induced surges from nearby motor switching. Use Value: Low 1 µA leakage preserves loop accuracy; fast response prevents latch-up in op-amps and ADC front-ends. |
| DC-DC Converter Output Protection | Telecom Power Supply Rail Protection |
Use Scenario: 15 V output of isolated flyback converter supplying FPGA core voltage regulators. IC Role / Device Role / Timing Role: TVS installed at converter output to suppress ringing and cross-talk-induced spikes. Use Value: 1500 W PPPM handles repetitive switching noise energy without degradation; RθJA = 75 °C/W allows thermal design with minimal copper area. | Use Scenario: Central office power distribution feeding multiple line cards with 15 V backplane rails. IC Role / Device Role / Timing Role: TVS mounted at card edge connector to protect against hot-swap and lightning-induced surges. Use Value: Halogen-free HM3 construction meets telecom flame-safety requirements; 200 A IFSM withstands high-energy fault currents. |
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/H | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher VC (24.4 V → 27.7 V) | Not suitable for IEC 61000-4-5 Level 4; limited to lower-energy transients | Select only when board space is constrained and surge energy is below 100 mJ |
| SMCJ15AHE3_A/I | Same electrical specs but RoHS-compliant commercial grade (E3), not halogen-free or AEC-Q101 qualified | Lacks automotive qualification and halogen-free assurance; unsuitable for Tier-1 automotive BOMs | Acceptable for industrial control panels where AEC-Q101 is not mandated |
Compared with SMCJ15AHM3_A/I, SMAJ15AHE3_A/H offers reduced surge capacity in a smaller footprint, while SMCJ15AHE3_A/I provides identical clamping performance without halogen-free or automotive qualification-making the HM3 variant essential for safety-critical or environmentally regulated deployments.
Availability
SMCJ15AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor modules, and telecom power distribution systems requiring stable component supply and full traceability.
Supply support for SMCJ15AHM3_A/I 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 and application-specific performance.
The SMCJ series targets high-energy transient suppression in harsh environments, with design focus on automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and 1500 W surge handling are mandatory.
FAQ
What is the clamping voltage of SMCJ15AHM3_A/I at its rated peak pulse current?
The SMCJ15AHM3_A/I has a maximum clamping voltage (VC) of 24.4 V when subjected to its rated 61.5 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's Document Number 88394, ensuring predictable overvoltage limiting for downstream circuitry in the SMCJ15AHM3_A/I design.
Is SMCJ15AHM3_A/I qualified for automotive applications?
Yes, SMCJ15AHM3_A/I is AEC-Q101 qualified, as indicated by the "HM3" suffix and confirmed in the Vishay datasheet revision 09-Jan-2024. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, making SMCJ15AHM3_A/I suitable for use in engine control modules, body electronics, and ADAS power domains.
What does the "HM3" suffix mean in SMCJ15AHM3_A/I?
The "HM3" suffix in SMCJ15AHM3_A/I denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. It distinguishes this variant from commercial-grade E3 versions and confirms compliance with JEDEC J-STD-020 MSL Level 1, JESD 201 Class 2 whisker resistance, and UL 94 V-0 flammability for the molding compound.
Can SMCJ15AHM3_A/I be used in bidirectional configurations?
No, SMCJ15AHM3_A/I is a unidirectional TVS diode, as confirmed by its part number ending in "A" (not "CA") and the presence of a cathode band marking. Bidirectional operation requires the CA suffix (e.g., SMCJ15CA), which exhibits symmetrical breakdown in both polarities-unlike the SMCJ15AHM3_A/I, which conducts only when cathode is positive relative to anode.
What is the thermal resistance of SMCJ15AHM3_A/I, and how does it affect PCB layout?
The SMCJ15AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal, as specified in the Vishay datasheet. To maintain safe junction temperatures during repeated surges, PCB layout must allocate adequate copper area and avoid thermal bottlenecks-undersized pads will elevate RθJA and risk thermal runaway in the SMCJ15AHM3_A/I.
SMCJ15AHM3_A/I 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/I FAQ
1.How can I place an order for SMCJ15AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15AHM3_A/I 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/I reliable?
The price and inventory of SMCJ15AHM3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for SMCJ15AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15AHM3_A/I?
SMCJ15AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15AHM3_A/I 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/I?
For technical support, including SMCJ15AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15AHM3_A/I requirements.
6.How does Aetrix verify that SMCJ15AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ15AHM3_A/I 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/I meets industry standards.
7.What is the process for return or replacement of SMCJ15AHM3_A/I?
All SMCJ15AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15AHM3_A/I, 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/I part is unused and in its original packaging.
Return procedure for SMCJ15AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ15AHM3_A/I Tags
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