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Vishay General Semiconductor - Diodes Division 1.5SMC12AHE3_A/H
- Part No.:
- 1.5SMC12AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC12AHE3_A/H.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,668
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Product details
Overview
1.5SMC12AHE3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features 12 V breakdown voltage (VBR = 11.4–12.6 V at 1 mA), 10.2 V stand-off voltage (VWM), and clamps transients to ≤16.7 V at 89.8 A peak pulse current (10/1000 μs), with 1500 W peak pulse power rating - ideal for automotive sensor line protection.
For engineers reviewing the 1.5SMC12AHE3_A/H datasheet, 1.5SMC12AHE3_A/H pinout, 1.5SMC12AHE3_A/H application, or 1.5SMC12AHE3_A/H equivalent, key selection considerations include its AEC-Q101 qualification, low clamping ratio (VC/VWM ≈ 1.64), unidirectional polarity with cathode band marking, and suitability for high-reliability 12 V automotive power rail and signal line surge suppression.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at 10.2 V), but triggers into low-impedance conduction when reverse voltage exceeds VBR, diverting surge energy away from downstream ICs or MOSFETs. Its glass-passivated junction ensures stable breakdown and low leakage (<5 μA at VWM).
Designed for fast transient response (<1 ps typical), it handles repetitive 10/1000 μs surges at 0.01% duty cycle and meets J-STD-020 MSL Level 1 (260 °C reflow). The SMC package supports automated placement and delivers thermal resistance of RθJA = 75 °C/W on standard 8 mm × 8 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1 mA - defines precise triggering threshold for overvoltage events |
| VWM | 10.2 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | ≤16.7 V at 89.8 A - clamping voltage during 1500 W surge, limiting stress on protected circuitry |
| IPPM | 89.8 A (10/1000 μs) - peak surge current capacity compatible with IEC 61000-4-5 Level 4 testing |
| PPPM | 1500 W - peak pulse power handling capability for short-duration lightning or ESD-induced transients |
| TJ max | +150 °C - enables operation in under-hood automotive environments without derating |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by molded band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal | Connected to protected line; conducts when transient exceeds VBR, shunting current to ground |
| Anode (unbanded end) | Reference/ground terminal | Typically tied to system ground or low-impedance return path to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| 1500 W peak pulse power (10/1000 μs) | Withstands severe lightning-induced surges per ISO 7637-2 and IEC 61000-4-5 test profiles |
| Low clamping ratio (VC/VWM ≈ 1.64) | Minimizes voltage overshoot during clamping, protecting 12 V logic-level interfaces and CAN transceivers |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow processes without pre-baking or special handling |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage drift over temperature and lifetime |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting analog voltage outputs of pressure, temperature, and position sensors in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between sensor output and ground, triggered within picoseconds to clamp transients. Use Value: Prevents latch-up or permanent damage to 12 V sensor signal conditioning ICs while maintaining <5 μA leakage at nominal supply. |
Use Scenario: Safeguarding 24 V digital input channels of programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated TVS on each input line, absorbing up to 1500 W surges without degradation across 100,000+ cycles. Use Value: Eliminates need for external series resistors or RC filters, reducing BOM count and PCB footprint while meeting IEC 61000-4-4/5 immunity requirements. |
| Automotive Body Control Module (BCM) | Telecom Power Supply Rail Protection |
Use Scenario: Clamping inrush and switching transients on 12 V power rails feeding microcontrollers, LED drivers, and LIN transceivers in door modules and lighting systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main VCC rail, coordinated with upstream fuse and downstream LDOs. Use Value: Maintains system uptime during battery jump-start events (load dump up to 35 V) by limiting rail voltage to ≤16.7 V. |
Use Scenario: Protecting DC-DC converter inputs in telecom base station power supplies subjected to AC line surges and lightning coupling. IC Role / Device Role / Timing Role: First-line transient suppressor on 12 V or 24 V intermediate bus, placed before bulk capacitors and controller ICs. Use Value: Enables compliance with GR-1089-CORE Section 4.5.2 surge immunity without increasing heatsink size or derating converter output. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A-E3/57T | Same VWM (10.2 V) and VC (16.7 V), but lower PPPM = 400 W and smaller SMA package (DO-214AC); RθJA = 110 °C/W | Not AEC-Q101 qualified; suitable for commercial-grade consumer or industrial equipment with lower surge severity | Select when cost or board space is critical and automotive qualification is unnecessary |
| 1.5KE12A | Through-hole DO-15 package; identical electrical specs (VBR, VC, PPPM) but higher RθJA (60 °C/W on larger pads) and no AEC-Q101 validation | Used in legacy designs or prototyping where manual assembly or socketing is preferred | Choose only for non-automotive, non-SMT applications requiring identical clamping performance |
Compared with SMAJ12A-E3/57T and 1.5KE12A, the 1.5SMC12AHE3_A/H delivers automotive-grade reliability in a compact SMC package with superior thermal performance (RθJA = 75 °C/W) and verified surge endurance - making it the sole option for production AEC-Q101-compliant 12 V systems.
Availability
1.5SMC12AHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, body control modules, and telecom power rail protection requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101 sourcing.
Supply support for 1.5SMC12AHE3_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 automotive, industrial, and computing markets.
The 1.5SMC Series was engineered specifically for high-power, surface-mount transient suppression in harsh environments - emphasizing AEC-Q101 qualification, low clamping ratios, and compatibility with automated manufacturing.
FAQ
What is the breakdown voltage tolerance of the 1.5SMC12AHE3_A/H?
The 1.5SMC12AHE3_A/H has a specified breakdown voltage range of 11.4 V to 12.6 V at 1 mA test current, representing ±5% tolerance around the nominal 12 V rating. This tight VBR window ensures consistent triggering behavior across production lots and temperature ranges, critical for predictable protection in automotive 12 V systems.
Is the 1.5SMC12AHE3_A/H RoHS-compliant and halogen-free?
Yes, the 1.5SMC12AHE3_A/H carries the HE3 suffix, indicating it is RoHS-compliant and AEC-Q101 qualified. However, it is not halogen-free - that designation applies only to HM3-suffixed variants. The HE3 version uses standard matte tin plating and meets JESD201 Class 2 whisker resistance requirements.
How does the 1.5SMC12AHE3_A/H perform under repeated surge stress?
The 1.5SMC12AHE3_A/H is rated for repetitive 10/1000 μs surges at 0.01% duty cycle, meaning it can sustain ≥1000 pulses with full 1500 W peak power without parameter shift or failure. Its glass-passivated junction and SMC package construction ensure stable clamping voltage and leakage current over extended surge exposure, validated per AEC-Q101 stress tests.
Can the 1.5SMC12AHE3_A/H be used in bidirectional configurations?
No - the 1.5SMC12AHE3_A/H is strictly unidirectional, as indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay offers the 1.5SMC12CA variant. Using the 1.5SMC12AHE3_A/H in reverse-biased configurations risks forward conduction and failure; correct polarity orientation is mandatory.
What is the thermal resistance and recommended pad layout for the 1.5SMC12AHE3_A/H?
The 1.5SMC12AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. Vishay specifies this pad layout in the datasheet (Document 88303, page 5) and recommends adhering to it to maintain rated power dissipation and avoid thermal runaway during repetitive surge events.
1.5SMC12AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 89.8A
- 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 (SMCJ)
1.5SMC12AHE3_A/H FAQ
1.How can I place an order for 1.5SMC12AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC12AHE3_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 1.5SMC12AHE3_A/H reliable?
The price and inventory of 1.5SMC12AHE3_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 1.5SMC12AHE3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC12AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC12AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC12AHE3_A/H?
1.5SMC12AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC12AHE3_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 1.5SMC12AHE3_A/H?
For technical support, including 1.5SMC12AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC12AHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC12AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC12AHE3_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 1.5SMC12AHE3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC12AHE3_A/H?
All 1.5SMC12AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC12AHE3_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 1.5SMC12AHE3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC12AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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