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Vishay General Semiconductor - Diodes Division TPC27CAHM3/H
- Part No.:
- TPC27CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC27CAHM3/H.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:10,490
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Product details
Overview
TPC27CAHM3/H from Vishay General Semiconductor is a bidirectional 1500 W transient voltage suppressor (TVS) in the SMPC (TO-277A) package, designed for high-reliability automotive and industrial surge protection. It features a breakdown voltage of 25.7–28.4 V at 1 mA, clamping voltage of 37.5 V at 40 A, stand-off voltage of 23.1 V, and operates up to +185 °C junction temperature.
For engineers reviewing the TPC27CAHM3/H datasheet, TPC27CAHM3/H pinout, TPC27CAHM3/H application, or TPC27CAHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, low-profile 1.1 mm height, MSL Level 1 rating, halogen-free RoHS-compliant construction, and suitability for inductive load switching transients on sensor signal lines and MOSFET gates.
Technical Context
The TPC27CAHM3/H employs Vishay's PAR® (Protected Avalanche Rectifier) technology with junction passivation optimized for stable avalanche performance under repetitive surge stress. Its bidirectional architecture enables symmetrical clamping across both polarities without external polarity management.
Designed for automotive-grade reliability, it supports operation from –65 °C to +185 °C and meets JESD201 Class 2 whisker resistance. The device uses a 10/1000 μs surge waveform standard per ANSI/IEEE C62.35 and delivers consistent clamping with ≤1.0 μA reverse leakage at VWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at IT = 1 mA - defines reliable avalanche initiation threshold for bidirectional clamping |
| VWM | 23.1 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 37.5 V at 40.0 A - peak clamped voltage during 10/1000 μs surge, limiting downstream IC stress |
| PPPM | 1500 W - peak pulse power handling capability under standardized transient conditions |
| TJ max | +185 °C - enables placement near high-temperature components in engine control or powertrain modules |
| Package | SMPC (TO-277A) - surface-mount, low-profile (1.1 mm typical height), AEC-Q101 qualified |
Pinout & Package
TPC27CAHM3/H is housed in the SMPC (TO-277A) package: a 2-terminal, bidirectional SMD device with no polarity marking. Dimensions conform to JEDEC TO-277A, featuring matte tin-plated leads solderable per J-STD-002 and JESD22-B102, and rated MSL Level 1 (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as conduction path during positive or negative transients - no fixed polarity |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired terminal completing symmetrical avalanche path; terminals are electrically interchangeable |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics use including powertrain, body control, and ADAS sensor interfaces |
| Junction temperature rating | 185 °C maximum enables deployment in under-hood environments without derating |
| Low profile height | 1.1 mm typical - reduces board clearance issues and improves airflow in dense layouts |
| Halogen-free & RoHS | HM3 suffix confirms compliance with environmental standards and JESD201 Class 2 whisker resistance |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive kickback in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector or IC input pins to clamp transients before they reach sensitive analog front-ends. Use Value: Clamps 40 A surges to ≤37.5 V, preserving signal integrity and preventing latch-up in microcontrollers and ADCs. | Use Scenario: Safeguarding gate drivers and feedback sensing circuits in variable-frequency drives exposed to relay switching noise and back-EMF. IC Role / Device Role / Timing Role: Transient suppression on isolated power supply rails and current-sense amplifier inputs. Use Value: Withstands repeated 1500 W pulses while maintaining <1.0 μA leakage at 23.1 V, minimizing offset error in precision current measurement. |
| Consumer Power Adapter Outputs | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage protection in USB PD and multi-output AC/DC adapters subject to output short-circuit recovery spikes. IC Role / Device Role / Timing Role: Fast-response clamping element between DC output and downstream DC-DC converters or USB controllers. Use Value: Sub-nanosecond response time limits voltage overshoot during fast-rising faults, reducing need for additional filtering capacitance. | Use Scenario: Surge protection on Ethernet PHY interface lines (e.g., MDI pairs) and auxiliary control signals in base station remote radio units. IC Role / Device Role / Timing Role: Primary-level transient shunt on unshielded copper traces entering EMI-filtered enclosures. Use Value: 1500 W rating handles IEC 61000-4-5 Level 4 (4 kV) surges while maintaining low capacitance (<100 pF) to avoid signal integrity degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-HF | Unidirectional; 24 V VWM; 38.9 V VC @ 38.8 A; SMA package (higher profile, lower PPPM = 400 W) | Requires external polarity alignment; unsuitable for AC-coupled or bidirectional signal lines | Select when cost sensitivity outweighs space constraints and unidirectional clamping suffices |
| TPC24CAHM3/H | Lower VBR (22.8–25.2 V); 33.2 V VC @ 45.2 A; same package, AEC-Q101, and construction | Better suited for 24 V nominal systems where tighter clamping margin is required | Choose for 24 V rail protection where lower clamping voltage reduces stress on downstream 30 V-rated FETs |
Compared with SMAJ24A-HF and TPC24CAHM3/H, the TPC27CAHM3/H provides higher standoff (23.1 V) and clamping (37.5 V) aligned to 27 V nominal systems, retains full bidirectionality and automotive qualification, and delivers 1500 W surge capacity in the same compact SMPC footprint-making it optimal for next-gen 12/24 V hybrid architectures.
Availability
TPC27CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial motor drive inputs, and telecom line protection requiring stable component supply and long-term lifecycle assurance.
Supply support for TPC27CAHM3/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, TVS devices, and optoelectronics with emphasis on reliability and automotive-grade validation.
The TPCxxCA series belongs to Vishay's PAR® TVS family, engineered specifically for high-energy transient suppression in harsh environments where AEC-Q101 compliance, thermal robustness, and low-profile mounting are mandatory.
FAQ
What is the maximum clamping voltage of the TPC27CAHM3/H under surge conditions?
The TPC27CAHM3/H has a maximum clamping voltage (VC) of 37.5 V when subjected to its rated peak pulse current of 40.0 A using the standard 10/1000 μs waveform. This value is measured at the device terminals and represents the upper limit of voltage seen by downstream circuitry during transient events, ensuring protection for 30 V-rated components in 24–27 V systems.
Is the TPC27CAHM3/H suitable for automotive applications?
Yes, the TPC27CAHM3/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance. Its 185 °C maximum junction temperature, MSL Level 1 rating, and TO-277A package make it appropriate for under-hood and body-control module deployments where reliability under thermal and mechanical stress is critical.
Does the TPC27CAHM3/H require polarity-aware PCB layout?
No - the TPC27CAHM3/H is a bidirectional TVS with no polarity marking on the SMPC (TO-277A) package. Both terminals are functionally identical, allowing placement without orientation constraints. This simplifies automated assembly and eliminates risk of reverse installation in differential or AC-coupled signal paths such as CAN, LIN, or sensor bridges.
What is the leakage current specification for the TPC27CAHM3/H at its stand-off voltage?
At the rated stand-off voltage (VWM) of 23.1 V and ambient temperature of 25 °C, the TPC27CAHM3/H exhibits a maximum reverse leakage current (ID) of 1.0 μA. This ultra-low leakage ensures minimal power loss and avoids interference with high-impedance sensor bias networks or precision reference circuits.
How does the TPC27CAHM3/H compare to standard SMAJ-series TVS diodes in terms of surge capability?
The TPC27CAHM3/H delivers 1500 W peak pulse power - nearly 4× higher than the 400 W rating of SMAJ24A-HF - while occupying a similarly compact footprint. Its SMPC package also offers lower profile (1.1 mm vs. ~2.3 mm) and superior thermal performance due to enhanced copper tab design, making the TPC27CAHM3/H better suited for high-density, high-reliability applications where sustained surge energy must be safely dissipated.
TPC27CAHM3/H 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 40A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC)
TPC27CAHM3/H FAQ
1.How can I place an order for TPC27CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC27CAHM3/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 TPC27CAHM3/H reliable?
The price and inventory of TPC27CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC27CAHM3/H is usually 5 days.
3.What payment methods are accepted for TPC27CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC27CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC27CAHM3/H?
TPC27CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC27CAHM3/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 TPC27CAHM3/H?
For technical support, including TPC27CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC27CAHM3/H requirements.
6.How does Aetrix verify that TPC27CAHM3/H is sourced from the original manufacturer or authorized distributors?
All TPC27CAHM3/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 TPC27CAHM3/H meets industry standards.
7.What is the process for return or replacement of TPC27CAHM3/H?
All TPC27CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with TPC27CAHM3/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 TPC27CAHM3/H part is unused and in its original packaging.
Return procedure for TPC27CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC27CAHM3/H Tags
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