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Vishay General Semiconductor - Diodes Division 1.5SMC12AHM3_A/H
- Part No.:
- 1.5SMC12AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC12AHM3_A/H.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,935
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Product details
Overview
1.5SMC12AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power rails and signal lines. It features a 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), delivering 1500 W peak pulse power. It is AEC-Q101 qualified and housed in an SMC (DO-214AB) package for automotive and industrial power supply protection.
For engineers reviewing the 1.5SMC12AHM3_A/H datasheet, 1.5SMC12AHM3_A/H pinout, 1.5SMC12AHM3_A/H application, or 1.5SMC12AHM3_A/H equivalent, key selection criteria include its unidirectional polarity, 1500 W surge capability, 10.2 V working voltage, AEC-Q101 qualification, and SMC package compatibility with automated placement and high-reliability thermal cycling.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below VWM = 10.2 V and rapidly avalanches above VBR = 11.4–12.6 V to limit transient voltages. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<5.0 μA at VWM), while its low incremental surge resistance enables effective energy diversion during fast transients.
The device is rated for 1500 W peak pulse power (10/1000 μs waveform), supports 200 A non-repetitive forward surge current (8.3 ms half-sine), and maintains operation across –65 °C to +150 °C junction temperature. Its MSL Level 1 rating (260 °C reflow peak) and halogen-free, RoHS-compliant construction meet stringent automotive and industrial manufacturing requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1 mA - defines precise avalanche onset threshold for reliable clamping initiation |
| VWM | 10.2 V - maximum continuous reverse operating voltage before leakage exceeds 5 μA |
| VC @ IPPM | ≤16.7 V at 89.8 A - clamped voltage under full 1500 W surge, limiting downstream stress |
| PPPM | 1500 W - peak transient power handling per 10/1000 μs waveform, enabling protection against lightning & inductive spikes |
| IFSM | 200 A - single half-sine surge rating (8.3 ms), supporting high-energy fault events in power circuits |
| TJ max | +150 °C - maximum junction temperature, allowing use in under-hood automotive and high-ambient industrial environments |
| Package | SMC (DO-214AB) - standardized surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal design support |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; cathode indicated by band on body; compliant with UL 94 V-0 flammability rating and J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to lower-potential side of protected line; enables unidirectional clamping from cathode to anode |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to higher-potential rail (e.g., VCC); avalanche conduction occurs when cathode-to-anode voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| 1500 W peak pulse power | Handles high-energy transients (e.g., ISO 7637-2 Pulse 5a) without degradation in automotive power nets |
| Glass-passivated junction | Ensures stable VBR tolerance and low parametric drift over lifetime and thermal stress |
| MSL Level 1 (260 °C) | Supports standard lead-free reflow profiles without moisture-induced failure risk |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global automotive and industrial OEMs |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp surges >35 V. Use Value: Clamps to ≤16.7 V at 89.8 A, preventing damage to downstream regulators and microcontrollers. |
Use Scenario: Safeguarding programmable logic controller (PLC) 24 V DC inputs against field-wiring inductive kickback. IC Role / Device Role / Timing Role: Standoff-rated TVS on input terminals to absorb repetitive switching transients. Use Value: 10.2 V VWM allows normal 24 V operation while responding within <1 ns to >100 V spikes. |
| Automotive Sensor Signal Line | Telecom Power Interface |
Use Scenario: Shielding LIN bus or analog sensor outputs (e.g., temperature, pressure) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on signal path to GND, preserving signal integrity. Use Value: Sub-μA leakage at 10.2 V avoids loading sensitive analog sources; fast response prevents latch-up. |
Use Scenario: Front-end protection for PoE-powered network switches and base station power converters. IC Role / Device Role / Timing Role: Primary surge suppressor on 48 V DC input before DC/DC conversion stage. Use Value: 1500 W rating handles combination wave surges (1.2/50 μs + 8/20 μs) per IEC 61000-4-5 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12AHE3_A/H | Lower peak power (600 W), same VWM/VBR, SMB package (smaller footprint, lower thermal mass) | Best suited for space-constrained consumer electronics where 1500 W surge margin is not required | Select when board area is critical and surge threat level is moderate (e.g., IEC 61000-4-2 ±8 kV contact) |
| 1.5KE12A | Through-hole TO-204AA (DO-41), identical electrical specs but no AEC-Q101 qualification or MSL Level 1 rating | Applicable in legacy industrial designs with wave-solder assembly and no automotive qualification mandate | Choose only for non-automotive, non-reflow production where manual or wave soldering is used |
Compared with 1.5SMC12AHM3_A/H, SMBJ12AHE3_A/H trades surge capacity for compactness, while 1.5KE12A sacrifices surface-mount compatibility and automotive qualification for cost-sensitive through-hole deployment - neither offers drop-in replacement due to package or qualification mismatch.
Availability
1.5SMC12AHM3_A/H is available at Aetrix Electronics and suitable for automotive control units, industrial PLC power inputs, telecom power interfaces, and sensor signal conditioning requiring stable component supply with AEC-Q101 assurance and consistent SMC packaging.
Supply support for 1.5SMC12AHM3_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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The 1.5SMC Series was engineered for high-power transient suppression in harsh environments-specifically targeting automotive, industrial, and telecom systems needing robust, surface-mountable TVS solutions with validated AEC-Q101 compliance.
FAQ
What is the clamping voltage of the 1.5SMC12AHM3_A/H under maximum surge conditions?
The 1.5SMC12AHM3_A/H clamps to a maximum of 16.7 V when subjected to its rated 89.8 A peak pulse current (10/1000 μs waveform). This value is measured at the device terminals under standardized test conditions with specified PCB pad layout (0.31" × 0.31" copper), ensuring predictable overvoltage limiting for downstream ICs and power stages in the 1.5SMC12AHM3_A/H application circuit.
Is the 1.5SMC12AHM3_A/H suitable for automotive applications?
Yes, the 1.5SMC12AHM3_A/H is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials. Its SMC package meets MSL Level 1 (260 °C peak reflow), and it operates across –65 °C to +150 °C junction temperature-making it appropriate for engine control modules, body electronics, and ADAS power domains where the 1.5SMC12AHM3_A/H provides certified transient immunity.
How does the 1.5SMC12AHM3_A/H differ from bidirectional TVS diodes like 1.5SMC12CA?
The 1.5SMC12AHM3_A/H is unidirectional and features polarity marking (cathode band), enabling asymmetric clamping from cathode to anode only. In contrast, 1.5SMC12CA is bidirectional with symmetrical breakdown in both directions and no polarity marking. The 1.5SMC12AHM3_A/H is selected for DC power rail protection where reverse voltage blocking is required, unlike AC or differential signal protection where 1.5SMC12CA would apply.
What is the maximum leakage current of the 1.5SMC12AHM3_A/H at its stand-off voltage?
At its rated stand-off voltage (VWM) of 10.2 V and ambient temperature of 25 °C, the 1.5SMC12AHM3_A/H exhibits a maximum reverse leakage current (ID) of 5.0 μA. This low leakage ensures minimal power loss and avoids unintended loading of sensitive 12 V supply rails or sensor reference nodes in which the 1.5SMC12AHM3_A/H is deployed.
Does the 1.5SMC12AHM3_A/H require heatsinking in typical applications?
No external heatsink is required for the 1.5SMC12AHM3_A/H under normal transient conditions, as its thermal resistance junction-to-ambient (RθJA) is 75 °C/W with recommended 8.0 mm × 8.0 mm copper pads. However, for sustained high-duty-cycle surges or elevated ambient temperatures (>85 °C), PCB copper area optimization per Vishay's layout guidelines is essential to maintain safe 1.5SMC12AHM3_A/H junction temperature below 150 °C.
1.5SMC12AHM3_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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC12AHM3_A/H FAQ
1.How can I place an order for 1.5SMC12AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC12AHM3_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 1.5SMC12AHM3_A/H reliable?
The price and inventory of 1.5SMC12AHM3_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 1.5SMC12AHM3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC12AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC12AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC12AHM3_A/H?
1.5SMC12AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC12AHM3_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 1.5SMC12AHM3_A/H?
For technical support, including 1.5SMC12AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC12AHM3_A/H requirements.
6.How does Aetrix verify that 1.5SMC12AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC12AHM3_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 1.5SMC12AHM3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC12AHM3_A/H?
All 1.5SMC12AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC12AHM3_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 1.5SMC12AHM3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC12AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC12AHM3_A/H Tags
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