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Vishay General Semiconductor - Diodes Division SM15T12AHM3/H
- Part No.:
- SM15T12AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T12AHM3/H.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,248
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Product details
Overview
SM15T12AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 12 V stand-off voltage (VWM), and 16.7 V maximum clamping voltage at 90 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T12AHM3/H datasheet, SM15T12AHM3/H pinout, SM15T12AHM3/H application, or SM15T12AHM3/H equivalent, key selection criteria include verified clamping performance at 90 A IPPM, AEC-Q101 qualification status, halogen-free RoHS compliance, and thermal resistance (RθJA = 75 °C/W) under standard pad layout.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable breakdown and low leakage (<5.0 μA at 10.2 V). Its 10/1000 μs waveform response defines both peak pulse power (1500 W) and clamping behavior (VC = 16.7 V @ IPPM = 90 A).
The device is qualified to AEC-Q101, features MSL Level 1 moisture sensitivity, and uses matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Thermal performance is specified with 0.31" × 0.31" copper pads, yielding RθJL = 15 °C/W and RθJA = 75 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10.2 V - Maximum reverse working voltage before clamping begins; sets operating margin below breakdown. |
| VBR min/max | 11.4 V / 12.6 V at 1.0 mA - Confirmed breakdown threshold range ensures reliable turn-on during transients. |
| VC @ IPPM | 16.7 V @ 90 A (10/1000 μs) - Clamping voltage limits downstream component stress during worst-case surge. |
| PPPM | 1500 W - Peak transient energy handling capacity compatible with lightning and motor-switching threats. |
| TJ max | +150 °C - Maximum junction temperature supports operation in under-hood automotive environments. |
| RθJA | 75 °C/W - Thermal resistance enables thermal design validation using standard 8 mm × 8 mm copper pads. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile, halogen-free, RoHS-compliant. Cathode identified by molded band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to ground or low-impedance reference; completes clamping loop during overvoltage events. |
| Cathode | Protected line connection | Connected to the line being protected (e.g., 12 V rail or sensor input); conducts during reverse-biased surge. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces. |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| Low inductance layout | Minimizes voltage overshoot during fast-rising transients (e.g., <100 ns edges) due to compact SMC geometry. |
| Halogen-free & RoHS-compliant | Meets automotive OEM material compliance requirements (e.g., GMW3172, Ford WSS-M99P9999-A1). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between power rail and ground. Use Value: Limits rail voltage to ≤16.7 V during 90 A surges, preventing damage to 16 V-rated regulators and microcontrollers. | Use Scenario: Safeguarding analog inputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Signal-line TVS suppressing ESD and inductive kickback from solenoid drivers. Use Value: Clamps transients within 1 ns response time while maintaining <5.0 μA leakage at 10.2 V for precision measurement integrity. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Securing 12 V DC input of PoE-powered network switches against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level transient suppressor on main power entry before DC/DC conversion. Use Value: Absorbs 1500 W peak pulses without degradation, meeting IEC 61000-4-5 Level 4 (4 kV) requirements when properly laid out. | Use Scenario: Shielding MCU GPIOs and gate drivers in washing machine motor control boards from brush-commutator noise. IC Role / Device Role / Timing Role: Localized clamping element across H-bridge supply rails and feedback paths. Use Value: Withstands 200 A non-repetitive forward surge (IFSM), enabling robust protection during stall-current events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | 600 W PPPM, same VWM/VC but lower IPPM (32.5 A), DO-214AC package | Limited to lower-energy threats; not AEC-Q101 qualified | Select when cost-sensitive consumer designs require basic I/O protection without automotive qualification. |
| SMCJ12A | 1500 W PPPM, identical VWM/VC/IPPM, same SMC package, AEC-Q101 available in HM3 variant | No functional difference; SMCJ12AHM3/H offers identical specs and qualification | Consider only if dual-sourcing is required; no electrical or mechanical advantage over SM15T12AHM3/H. |
Compared with SMAJ12A and SMCJ12A, SM15T12AHM3/H delivers identical 1500 W surge rating and AEC-Q101 qualification in the same SMC footprint, while offering lower clamping impedance and tighter VBR tolerance (±5% vs ±10%)-critical for high-reliability automotive power domains.
Availability
SM15T12AHM3/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply across extended production lifecycles.
Supply support for SM15T12AHM3/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, TVS devices, and optoelectronics with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SM15T Series is designed specifically for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where 1500 W surge immunity and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SM15T12AHM3/H at its rated peak pulse current?
The SM15T12AHM3/H has a maximum clamping voltage (VC) of 16.7 V when subjected to its rated peak pulse current (IPPM) of 90 A under the standardized 10/1000 μs waveform. This value is measured with the device mounted on 0.31" × 0.31" copper pads per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SM15T12AHM3/H qualified for automotive applications?
Yes, SM15T12AHM3/H is AEC-Q101 qualified, as indicated by the "HM3" suffix (halogen-free, RoHS-compliant, AEC-Q101 qualified). This qualification confirms its suitability for automotive powertrain, chassis, and body electronics where reliability under temperature cycling, humidity, and mechanical shock is mandatory.
What does the "H" in SM15T12AHM3/H signify?
The "H" in SM15T12AHM3/H denotes the revision code per Vishay's ordering nomenclature, indicating the specific manufacturing revision level of the device. It appears after the package code "HM3" and aligns with Vishay's documented revision labeling convention (e.g., A, B, … H) for traceability and process control.
How does SM15T12AHM3/H differ from SM15T12A-E3/57T?
SM15T12AHM3/H is halogen-free and AEC-Q101 qualified, whereas SM15T12A-E3/57T is RoHS-compliant but commercial-grade (non-automotive). Both share identical electrical specs and SMC package, but SM15T12AHM3/H meets stricter automotive material and reliability requirements, including JESD201 Class 2 whisker resistance and MSL Level 1 handling.
What is the maximum reverse leakage current for SM15T12AHM3/H at its stand-off voltage?
The maximum reverse leakage current (ID) for SM15T12AHM3/H is 5.0 μA at its stand-off voltage (VWM) of 10.2 V, measured at TA = 25 °C. This low leakage preserves signal integrity and minimizes standby power loss in always-on automotive and industrial systems.
SM15T12AHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- SM15T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 90A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SM15T12AHM3/H FAQ
1.How can I place an order for SM15T12AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T12AHM3/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 SM15T12AHM3/H reliable?
The price and inventory of SM15T12AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T12AHM3/H is usually 5 days.
3.What payment methods are accepted for SM15T12AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T12AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T12AHM3/H?
SM15T12AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T12AHM3/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 SM15T12AHM3/H?
For technical support, including SM15T12AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T12AHM3/H requirements.
6.How does Aetrix verify that SM15T12AHM3/H is sourced from the original manufacturer or authorized distributors?
All SM15T12AHM3/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 SM15T12AHM3/H meets industry standards.
7.What is the process for return or replacement of SM15T12AHM3/H?
All SM15T12AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SM15T12AHM3/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 SM15T12AHM3/H part is unused and in its original packaging.
Return procedure for SM15T12AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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