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Vishay General Semiconductor - Diodes Division TPC18HM3/87A
- Part No.:
- TPC18HM3/87A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC18HM3/87A.pdf
- Description:
- TVS DIODE 14.5VWM 26.5VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:2,669
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Product details
Overview
TPC18HM3/87A 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 surge protection. It features a breakdown voltage of 17.1–18.9 V at 1.0 mA, clamping voltage of 25.2 V at 59.5 A peak pulse current, and operates up to +185 °C junction temperature.
For engineers reviewing the TPC18HM3/87A datasheet, TPC18HM3/87A pinout, TPC18HM3/87A application, or TPC18HM3/87A equivalent, key selection criteria include unidirectional clamping performance, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on space-constrained PCBs.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver low incremental surge resistance and fast response time under transient overvoltage events. Its junction passivation enables stable operation at TJ = 185 °C, supporting under-hood automotive environments and industrial motor drive ESD/surge zones.
The device is rated for 10/1000 μs waveform peak power dissipation of 1500 W and exhibits a typical temperature coefficient of VBR at 0.080 %/°C. Clamping behavior is characterized at IPPM = 59.5 A, with VC = 25.2 V - critical for protecting downstream MOSFET gates and sensor signal lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 17.1 / 18.0 / 18.9 V at 1.0 mA - defines precise breakdown threshold for reliable turn-on during transients |
| VWM | 15.3 V - maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 25.2 V at 59.5 A - clamping voltage limiting stress on protected ICs during 10/1000 μs surges |
| PPPM | 1500 W - peak pulse power handling capability per standard 10/1000 μs waveform |
| TJ max. | +185 °C - enables use in high-temperature automotive engine control units and industrial power modules |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct orientation in circuit |
| MSL Level | Level 1 (per J-STD-020) - no floor life limitation; suitable for standard reflow without dry pack |
Pinout & Package
Package: SMPC (TO-277A), surface-mount, 3-terminal configuration with cathode band marking. Dimensions conform to JEDEC TO-277A standard: 4.80 × 4.40 × 1.10 mm (L × W × H), low-profile design ideal for dense layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Cathode | Connected to protected line; reverse-biased during normal operation; conducts during overvoltage |
| Terminal 2 | Cathode | Parallel cathode path - dual-cathode structure lowers dynamic impedance and improves clamping consistency |
| Terminal 3 | Anode | Common ground reference; tied to system GND or low-impedance return path for surge current |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing |
| Junction passivation | Stabilizes VBR drift across temperature and lifetime; reduces parameter shift in harsh environments |
| Low profile (1.1 mm height) | Enables integration beneath shields or in ultra-thin enclosures without mechanical interference |
| Halogen-free & RoHS-compliant | Meets global environmental compliance requirements for automotive and industrial end equipment |
| Matte tin-plated leads | Ensures solderability per J-STD-002 and JESD 22-B102; passes JESD 201 Class 2 whisker test |
Applications
| Automotive Powertrain ECUs | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protection of 12 V CAN/LIN bus transceivers and microcontroller I/O against load dump and alternator ripple. IC Role / Device Role: Unidirectional TVS placed between signal line and chassis ground to clamp positive transients. Use Value: Withstands 1500 W surges while maintaining VC ≤ 25.2 V - prevents latch-up or gate oxide damage in protected transceivers. | Use Scenario: Surge suppression on 24 V DC input rails feeding PLC I/O modules exposed to relay coil switching. IC Role / Device Role: Primary front-end TVS absorbing inductive kickback energy before it reaches DC-DC converters. Use Value: Dual-cathode layout lowers effective dynamic impedance, reducing clamping overshoot during repetitive 59.5 A pulses. |
| Automotive Sensor Signal Lines | Telecom Power Supply Inputs |
Use Scenario: Protecting analog outputs of pressure/temperature sensors in ADAS camera modules from ESD and cable discharge. IC Role / Device Role: Low-capacitance unidirectional TVS placed directly at connector interface. Use Value: 15.3 V VWM ensures no leakage into 12 V sensor supply rail; 185 °C rating supports under-hood mounting. | Use Scenario: Input-stage transient protection for PoE-powered network switches operating from 48 V DC supplies. IC Role / Device Role: Standoff-rated TVS guarding primary-side DC input against lightning-induced surges. Use Value: 1500 W PPPM rating handles IEC 61000-4-5 Level 4 surges without degradation; MSL Level 1 simplifies manufacturing flow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18A | Lower PPPM (400 W); SMA package (larger footprint, higher thermal resistance) | Not AEC-Q101 qualified; limited to commercial-temperature industrial use | Choose when cost sensitivity outweighs automotive qualification and power handling needs |
| TPC18AHE3_A/H | Same electrical specs and TO-277A package; differs only in tape/reel packaging code and revision suffix | No functional or application difference - identical performance and mounting | Select for standard Vishay HM3 tape-and-reel delivery with 1500-unit reels |
Compared with SMAJ18A and TPC18AHE3_A/H, the TPC18HM3/87A delivers automotive-grade reliability and 3.75× higher surge power handling in the same compact SMPC footprint - making it optimal for next-generation ECU and ADAS designs requiring both miniaturization and AEC-Q101 compliance.
Availability
TPC18HM3/87A is available at Aetrix Electronics and suitable for automotive powertrain ECUs, industrial motor drives, ADAS sensor interfaces, and telecom power supply inputs requiring stable component supply across long production lifecycles.
Supply support for TPC18HM3/87A 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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The TPC series belongs to Vishay's PAR® family of high-power surface-mount TVS diodes, engineered specifically for automotive and industrial systems demanding robust transient immunity, high-temperature operation, and AEC-Q101 compliance.
FAQ
What is the breakdown voltage range of the TPC18HM3/87A?
The TPC18HM3/87A has a guaranteed breakdown voltage range of 17.1 V to 18.9 V at a test current of 1.0 mA, with a nominal value of 18.0 V. This tight VBR tolerance ensures consistent turn-on behavior across production lots and temperature extremes, critical for predictable clamping in safety-critical automotive circuits.
Is the TPC18HM3/87A AEC-Q101 qualified?
Yes, the TPC18HM3/87A is fully AEC-Q101 qualified. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and mechanical shock - confirming suitability for automotive powertrain, body electronics, and ADAS applications where component failure is not acceptable.
What package type does the TPC18HM3/87A use?
The TPC18HM3/87A uses the SMPC (TO-277A) package - a compact, low-profile, 3-terminal surface-mount outline measuring 4.80 × 4.40 × 1.10 mm. Its dual-cathode configuration and JEDEC-compliant footprint enable high-density PCB layouts and automated assembly without rework risk.
How does the clamping voltage of the TPC18HM3/87A compare to its breakdown voltage?
The TPC18HM3/87A clamps at 25.2 V when subjected to its rated 59.5 A peak pulse current (10/1000 μs waveform), which is approximately 40 % above its nominal 18.0 V breakdown voltage. This controlled voltage margin ensures safe operation of downstream 24 V-rated components while minimizing power dissipation in the TVS itself.
Can the TPC18HM3/87A be used in bidirectional configurations?
No, the TPC18HM3/87A is strictly unidirectional. It protects only against positive-going transients on the cathode side relative to the anode. For bidirectional protection, two TPC18HM3/87A devices must be connected in series opposition - or a dedicated bidirectional TVS such as the TPSMB18A should be selected instead.
TPC18HM3/87A 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):
- 14.5V
- Voltage - Breakdown (Min):
- 16.2V
- Voltage - Clamping (Max) @ Ipp:
- 26.5V
- Current - Peak Pulse (10/1000µs):
- 56.6A
- 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)
TPC18HM3/87A FAQ
1.How can I place an order for TPC18HM3/87A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC18HM3/87A 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 TPC18HM3/87A reliable?
The price and inventory of TPC18HM3/87A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC18HM3/87A is usually 5 days.
3.What payment methods are accepted for TPC18HM3/87A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC18HM3/87A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC18HM3/87A?
TPC18HM3/87A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC18HM3/87A 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 TPC18HM3/87A?
For technical support, including TPC18HM3/87A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC18HM3/87A requirements.
6.How does Aetrix verify that TPC18HM3/87A is sourced from the original manufacturer or authorized distributors?
All TPC18HM3/87A 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 TPC18HM3/87A meets industry standards.
7.What is the process for return or replacement of TPC18HM3/87A?
All TPC18HM3/87A units undergo pre-shipment inspection (PSI). If there is an issue with TPC18HM3/87A, 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 TPC18HM3/87A part is unused and in its original packaging.
Return procedure for TPC18HM3/87A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC18HM3/87A Tags
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Diodes Incorporated
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