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Vishay General Semiconductor - Diodes Division TPC51AHM3/86A
- Part No.:
- TPC51AHM3/86A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC51AHM3/86A.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:4,825
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Product details
Overview
TPC51AHM3/86A 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 standoff voltage of 43.6 V, breakdown voltage of 48.5–53.6 V at 1 mA, clamping voltage of 70.1 V at 21.4 A, and junction temperature rating up to +185 °C.
For engineers reviewing the TPC51AHM3/86A datasheet, TPC51AHM3/86A pinout, TPC51AHM3/86A application, or TPC51AHM3/86A equivalent, key selection criteria include its AEC-Q101 qualification, MSL Level 1 moisture sensitivity, low-profile 1.1 mm height, and suitability for inductive load switching transients on power rails and sensor signal lines.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for fast response (<1 ns), low incremental surge resistance, and stable clamping under repetitive 10/1000 µs surges. Its unidirectional polarity and 1500 W peak pulse power rating enable robust protection of downstream MOSFETs and ICs against ISO 7637-2 and IEC 61000-4-5 compliant transients.
The device operates across –65 °C to +185 °C junction temperature range and meets JESD201 Class 2 whisker resistance. Its SMPC (TO-277A) package supports automated placement and provides UL 94 V-0 rated molding compound with matte tin-plated leads solderable per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43.6 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VBR (min/typ/max) | 48.5 / 51.0 / 53.6 V at 1 mA - Ensures reliable triggering above system nominal rail |
| VC @ IPPM | 70.1 V at 21.4 A - Clamps destructive surges below safe threshold for 48 V automotive systems |
| PPPM | 1500 W - Sustains high-energy transients without failure under standardized 10/1000 µs waveform |
| TJ max | +185 °C - Enables operation in under-hood automotive environments and high-power industrial enclosures |
| Package | SMPC (TO-277A) - Low-profile (1.1 mm typical height), surface-mount, AEC-Q101 qualified package |
Pinout & Package
SMPC (TO-277A) is a 3-terminal surface-mount package with cathode band marking. Dimensions conform to JEDEC TO-277A standard: 4.80 × 4.40 × 1.10 mm (L × W × H), with 2.13 mm nominal lead pitch and 0.75 mm nominal thickness.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Cathode | Connected to protected line; conducts during overvoltage event to shunt current to ground |
| Terminal 2 | Cathode | Parallel cathode terminal for enhanced current handling and thermal distribution |
| Terminal 3 | Anode | Common ground reference; must be low-inductance connection for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| MSL Level 1 | Unlimited floor life at ≤30 °C/85 % RH - eliminates bake requirements prior to reflow |
| Junction temperature rating | +185 °C maximum - supports operation in engine control units and motor drive inverters |
| Low-profile height | 1.1 mm typical - enables use in space-constrained modules and stacked PCB assemblies |
| Passivated anisotropic rectifier | Stable VBR drift <0.093 %/°C - ensures predictable clamping across wide temperature range |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed ECUs from load dump and alternator ripple transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges before they reach DC-DC converters and microcontrollers. Use Value: Withstands 1500 W pulses and clamps at 70.1 V, keeping downstream 48 V-rated components within safe operating area. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation PLCs from ESD and inductive kickback. IC Role / Device Role / Timing Role: TVS connected across differential signal pair or single-ended line to ground, suppressing sub-100 ns transients. Use Value: Fast response time and low capacitance preserve signal integrity while limiting voltage excursion to <70.1 V during 21.4 A surges. |
| Telecom Power Supply Input Protection | Consumer Device USB Power Path Protection |
Use Scenario: Safeguarding AC/DC front-end rectifiers and PFC controllers in telecom base station power supplies exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-side TVS on bulk DC bus to absorb energy from coupled line transients before reaching switching stages. Use Value: 1500 W rating and 70.1 V clamping prevent latch-up or avalanche failure in high-voltage MOSFETs and gate drivers. | Use Scenario: Adding secondary-level surge immunity to USB-C PD power delivery paths in portable medical monitors and smart home hubs. IC Role / Device Role / Timing Role: TVS placed between VBUS and GND downstream of EMI filter to handle hot-plug and cable discharge events. Use Value: AEC-Q101 qualification and MSL Level 1 ensure long-term reliability and compatibility with automated SMT assembly processes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ51A-E3/5A (Vishay) | Same VBR range (48.5–53.6 V), but lower PPPM = 400 W and SMA package (higher profile, lower thermal mass) | Not AEC-Q101 qualified; limited to commercial/industrial ambient (TJ max = +150 °C) | Select when cost or legacy footprint drives choice, but derate for lower surge energy capability |
| TPSMD51A (Littelfuse) | Identical PPPM = 1500 W and VC ≈ 70 V, but TO-277A package lacks HM3 halogen-free/AEC-Q101 dual certification | Meets AEC-Q200 only; not validated for automotive semiconductor stress tests | Prefer TPC51AHM3/86A where full AEC-Q101 compliance and traceable material categorization are required |
Compared with SMAJ51A-E3/5A and TPSMD51A, the TPC51AHM3/86A delivers higher thermal endurance (+185 °C), guaranteed halogen-free construction, and full AEC-Q101 qualification-making it the only option qualified for critical automotive power domain applications requiring zero-defect reliability.
Availability
TPC51AHM3/86A is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom power supplies, and consumer USB-C PD systems requiring stable component supply, long-lifecycle support, and AEC-Q101 traceability.
Supply support for TPC51AHM3/86A 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, efficiency, and application-specific performance.
The TPC51AHM3/86A belongs to Vishay's eSMP® PAR® series of high-power surface-mount TVS diodes, engineered specifically for automotive-grade transient suppression in harsh-environment power electronics.
FAQ
What is the clamping voltage of the TPC51AHM3/86A at its rated peak pulse current?
The TPC51AHM3/86A has a maximum clamping voltage (VC) of 70.1 V when subjected to its rated peak pulse current (IPPM) of 21.4 A under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and ensures protected circuits remain below critical overvoltage thresholds during surge events. The TPC51AHM3/86A maintains this clamping performance across its full operating temperature range.
Is the TPC51AHM3/86A qualified for automotive applications?
Yes, the TPC51AHM3/86A is fully AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and powertrain applications. Its HM3 suffix confirms halogen-free, RoHS-compliant construction and compliance with JESD201 Class 2 whisker testing. The TPC51AHM3/86A is explicitly listed in Vishay's automotive-grade product portfolio for use in ECUs, ADAS modules, and 48 V mild-hybrid systems.
What does the 'HM3/86A' suffix indicate in TPC51AHM3/86A?
The 'HM3' denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101 qualified SMPC package variant with matte tin-plated leads meeting J-STD-002 solderability and JESD22-B102 durability standards. The '/86A' indicates tape-and-reel packaging per 7-inch reel (1500 units) with revision code 'A'. This suffix confirms full compliance with automotive material and process requirements-not just electrical specs-for the TPC51AHM3/86A.
Can the TPC51AHM3/86A replace older TO-220 or DO-214AB TVS devices?
The TPC51AHM3/86A is not a direct footprint replacement for TO-220 or DO-214AB packages due to its SMPC (TO-277A) 3-terminal layout and 4.8 × 4.4 mm outline. However, it offers superior power density (1500 W in 1.1 mm height) and thermal performance versus those legacy packages. System redesign is required for migration, but the TPC51AHM3/86A enables smaller PCB area, automated assembly, and higher reliability-especially in new automotive platforms where the TPC51AHM3/86A is specified.
What is the maximum reverse leakage current of the TPC51AHM3/86A at 43.6 V and 150 °C?
At VWM = 43.6 V and TJ = 150 °C, the TPC51AHM3/86A exhibits a maximum reverse leakage current (ID) of 10 µA, as specified in Vishay's Document Number 89056. This elevated-temperature leakage remains well below levels that would cause system power loss or false triggering. The TPC51AHM3/86A's low leakage stability supports long-term reliability in thermally demanding applications such as engine control modules.
TPC51AHM3/86A 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):
- 43.6V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- Current - Peak Pulse (10/1000µs):
- 21.4A
- 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)
TPC51AHM3/86A FAQ
1.How can I place an order for TPC51AHM3/86A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC51AHM3/86A 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 TPC51AHM3/86A reliable?
The price and inventory of TPC51AHM3/86A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC51AHM3/86A is usually 5 days.
3.What payment methods are accepted for TPC51AHM3/86A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC51AHM3/86A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC51AHM3/86A?
TPC51AHM3/86A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC51AHM3/86A 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 TPC51AHM3/86A?
For technical support, including TPC51AHM3/86A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC51AHM3/86A requirements.
6.How does Aetrix verify that TPC51AHM3/86A is sourced from the original manufacturer or authorized distributors?
All TPC51AHM3/86A 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 TPC51AHM3/86A meets industry standards.
7.What is the process for return or replacement of TPC51AHM3/86A?
All TPC51AHM3/86A units undergo pre-shipment inspection (PSI). If there is an issue with TPC51AHM3/86A, 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 TPC51AHM3/86A part is unused and in its original packaging.
Return procedure for TPC51AHM3/86A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC51AHM3/86A Tags
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