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Vishay General Semiconductor - Diodes Division TPC12AHM3/87A
- Part No.:
- TPC12AHM3/87A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC12AHM3/87A.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:9,900
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Product details
Overview
TPC12AHM3/87A from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in SMPC (TO-277A) package, designed for high-reliability automotive and industrial electronics protection. It features a 12.0 V nominal breakdown voltage (VBR), 10.2 V stand-off voltage (VWM), clamping voltage of 16.7 V at 89.8 A peak pulse current, and junction temperature rating up to +185 °C.
For engineers reviewing the TPC12AHM3/87A datasheet, TPC12AHM3/87A pinout, TPC12AHM3/87A application, or TPC12AHM3/87A equivalent, this device is selected for robust ESD/surge protection on power rails and signal lines where low-profile mounting, AEC-Q101 qualification, and fast response to 10/1000 µs transients are required.
Technical Context
The TPC12AHM3/87A employs passivated anisotropic rectifier technology with optimized junction passivation, enabling stable operation under repetitive surge stress and high ambient temperatures. Its unidirectional architecture supports DC-biased protection paths without reverse conduction during normal operation.
Rated for 1500 W peak pulse power per 10/1000 µs waveform and 200 A non-repetitive forward surge current (IFSM), it delivers low incremental surge resistance and sub-nanosecond response time-critical for safeguarding MOSFET gates and sensor interfaces against load-switching transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 11.4 V / 12.0 V / 12.6 V - ensures reliable triggering above system operating voltage while maintaining margin against false clamping |
| VWM | 10.2 V - maximum continuous reverse voltage before leakage exceeds 2 µA, compatible with 12 V automotive supply rails |
| VC @ IPPM | 16.7 V - clamping voltage at 89.8 A peak pulse, limiting downstream voltage stress to safe levels for 16 V-rated ICs |
| PPPM | 1500 W - peak pulse power handling capability per 10/1000 µs waveform, sufficient for ISO 7637-2 Pulse 1 & 2a suppression |
| TJ max | +185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures without derating |
| Package | SMPC (TO-277A) - surface-mount, low-profile (1.1 mm typical height), AEC-Q101 qualified, halogen-free and RoHS-compliant |
| Leakage @ VWM | 2.0 µA at 25 °C - minimal standby power loss and negligible impact on high-impedance sensor bias networks |
Pinout & Package
SMPC (TO-277A) package: 3-terminal surface-mount configuration with cathode band marking on terminal 1; terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker test requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Anode-side reference node | Connected to protected line; forms cathode connection for unidirectional clamping path to ground |
| 2 (Cathode) | Common cathode node | Internally tied to Pin 1; dual-cathode layout improves current sharing and thermal distribution during surge |
| 3 (Anode) | Ground return path | Low-inductance connection to system ground plane; critical for minimizing clamping overshoot during fast transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per stress test plan |
| Junction temperature rating +185 °C | Supports uninterrupted operation in engine control units and powertrain modules exposed to sustained high ambient heat |
| Very low profile (1.1 mm typical height) | Enables placement beneath connectors or in space-constrained PCB regions without mechanical interference |
| MSL Level 1 (per J-STD-020) | Zero floor life limitation - can be stored indefinitely before reflow, eliminating bake-out requirements in production |
| Low incremental surge resistance | Minimizes voltage overshoot during high di/dt events, improving protection margin for sensitive gate drivers and ADC inputs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and inductive switching transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground, clamping surges within 1 ns to limit voltage to ≤16.7 V. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers by suppressing 1500 W transients without sacrificing board space. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation systems exposed to relay coil kickback. IC Role / Device Role / Timing Role: Low-leakage (2 µA) TVS connected across differential signal pair to shunt ESD and fast transients to chassis ground. Use Value: Maintains signal integrity with <1.1 mm height and no added capacitance that would degrade bandwidth of 100 kHz sensor signals. |
| Telecom DC Power Input Protection | Consumer Device USB Power Line Protection |
|
Use Scenario: Securing 48 V PoE-powered equipment inputs against lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Primary-level TVS on DC input rail upstream of DC/DC converter, rated for 200 A IFSM and 1500 W PPPM. Use Value: Survives repeated 10/1000 µs surges without parameter drift, ensuring long-term field reliability in outdoor telecom cabinets. |
Use Scenario: Adding robust overvoltage protection on USB-C VBUS lines in portable audio devices and smart home hubs. IC Role / Device Role / Timing Role: Compact SMPC-packaged TVS mounted directly at connector, leveraging 1.1 mm height to fit behind thin metal housings. Use Value: Provides certified AEC-Q101 reliability and halogen-free construction required for global consumer safety certifications (UL/IEC 62368). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Lower PPPM (400 W), SMA package (higher profile: 2.3 mm), VC = 19.9 V at 21.6 A | Not AEC-Q101 qualified; suitable only for commercial-grade consumer or computing applications | Select when cost sensitivity outweighs automotive qualification and surge energy requirements are ≤400 W |
| TPC12AHE3/87A | Same electrical specs and SMPC package; differs only in halogen-free compliance level (HE3 vs HM3) and revision code (E vs A) | No functional difference; HE3 variant uses alternate molding compound meeting same AEC-Q101 and RoHS requirements | Choose TPC12AHE3/87A if specific material compliance documentation (e.g., IEC 61249-2-21) is mandated by OEM procurement policy |
Compared with SMAJ12A and TPC12AHE3/87A, the TPC12AHM3/87A uniquely combines 1500 W surge capacity, +185 °C operation, and MSL Level 1 handling in a 1.1 mm profile-making it the only option qualified for under-hood automotive use without derating or secondary protection stages.
Availability
TPC12AHM3/87A is available at Aetrix Electronics and suitable for automotive power distribution modules, industrial PLC I/O protection, and telecom DC input circuits requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for TPC12AHM3/87A 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, rectifiers, and protection devices for automotive, industrial, and computing markets.
The TPC series was developed specifically for AEC-Q101-compliant transient suppression in harsh-environment electronics, emphasizing thermal robustness, low-profile packaging, and consistent clamping performance across temperature extremes.
FAQ
What is the exact breakdown voltage tolerance for TPC12AHM3/87A?
The TPC12AHM3/87A has a guaranteed breakdown voltage range of 11.4 V (minimum) to 12.6 V (maximum) at 1.0 mA test current, with 12.0 V as the nominal value. This ±5% tolerance ensures predictable clamping onset while maintaining margin against normal operating voltage fluctuations in 12 V systems.
Is TPC12AHM3/87A suitable for bidirectional transient protection?
No, TPC12AHM3/87A is strictly unidirectional and must be used only in DC-biased applications where reverse conduction is not required. For bidirectional protection, Vishay offers separate devices such as the TPB12AHM3/87A; using TPC12AHM3/87A in AC or floating signal paths may result in catastrophic failure during negative transients.
Does TPC12AHM3/87A require derating at elevated ambient temperatures?
Yes, TPC12AHM3/87A must be derated per Figure 2 in the datasheet: peak pulse power decreases linearly from 100% at 25 °C to ~50% at 125 °C ambient. At 150 °C, derating reaches ~30%, but the device remains fully functional up to +185 °C junction temperature due to its optimized thermal design.
What is the meaning of the "HM3/87A" suffix in TPC12AHM3/87A?
The "HM3" denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification; "87A" indicates the specific revision code and tape-and-reel packaging configuration (7-inch reel, 1500 units). This suffix confirms compliance with automotive material standards and defines the physical delivery format for automated assembly.
Can TPC12AHM3/87A be used in parallel to increase surge current handling?
No-TPC12AHM3/87A is not characterized for parallel operation. Variations in VBR tolerance and dynamic impedance can cause current imbalance, leading to thermal runaway in one device. For higher surge ratings, select a single higher-rated part such as TPC15AHM3/87A (1500 W at 15 V) instead of paralleling.
TPC12AHM3/87A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- TO-277, 3-PowerDFN
- Series:
- PAR®, eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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 ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC)
TPC12AHM3/87A FAQ
1.How can I place an order for TPC12AHM3/87A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC12AHM3/87A 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 TPC12AHM3/87A reliable?
The price and inventory of TPC12AHM3/87A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC12AHM3/87A is usually 5 days.
3.What payment methods are accepted for TPC12AHM3/87A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC12AHM3/87A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC12AHM3/87A?
TPC12AHM3/87A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC12AHM3/87A 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 TPC12AHM3/87A?
For technical support, including TPC12AHM3/87A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC12AHM3/87A requirements.
6.How does Aetrix verify that TPC12AHM3/87A is sourced from the original manufacturer or authorized distributors?
All TPC12AHM3/87A 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 TPC12AHM3/87A meets industry standards.
7.What is the process for return or replacement of TPC12AHM3/87A?
All TPC12AHM3/87A units undergo pre-shipment inspection (PSI). If there is an issue with TPC12AHM3/87A, 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 TPC12AHM3/87A part is unused and in its original packaging.
Return procedure for TPC12AHM3/87A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC12AHM3/87A Tags
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