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Vishay General Semiconductor - Diodes Division TPC27CAHM3/I
- Part No.:
- TPC27CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC27CAHM3/I.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:7,101
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Product details
Overview
TPC27CAHM3/I 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 electronics protection. It features a breakdown voltage of 25.7–28.4 V, 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/I datasheet, TPC27CAHM3/I pinout, TPC27CAHM3/I application, or TPC27CAHM3/I equivalent, key selection criteria include its AEC-Q101 qualification, low-profile 1.1 mm height, MSL Level 1 rating, bidirectional surge suppression capability, and compatibility with automated SMT placement on automotive sensor signal lines and power rails.
Technical Context
The TPC27CAHM3/I implements a junction-passivated PAR® design optimized for fast transient response and stable clamping under repetitive 10/1000 μs surge waveforms. Its bidirectional structure enables symmetrical protection without polarity constraints, and its 185 °C maximum junction temperature supports under-hood automotive deployment.
Rated for 1500 W peak pulse power and 40 A peak pulse current, the device maintains ≤1.0 μA reverse leakage at 23.1 V stand-off voltage and achieves clamping within 37.5 V - critical for safeguarding 24 V system ICs and MOSFETs against load-dump and inductive switching transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V - ensures reliable breakdown initiation above 24 V nominal rail while avoiding false triggering |
| VWM | 23.1 V - maximum continuous operating voltage compatible with 24 V automotive systems |
| VC @ IPPM | 37.5 V - clamps 40 A surges to safe levels for downstream 3.3 V/5 V logic and gate drivers |
| PPPM | 1500 W - handles high-energy transients per ISO 7637-2 Pulse 5a without degradation |
| TJ max | 185 °C - supports operation in engine control units and ADAS modules with minimal derating |
| Leakage @ VWM | ≤1.0 μA - prevents measurable power loss in always-on vehicle subsystems |
| Package | SMPC (TO-277A) - 3.7 mm × 2.2 mm footprint with 1.1 mm profile for space-constrained PCB layouts |
Pinout & Package
Package: SMPC (TO-277A), surface-mount, bidirectional, unmarked polarity, matte tin-plated terminals compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity - no orientation required during placement |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; forms symmetrical clamping path across protected line |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22-A114 |
| Junction passivation (PAR®) | Reduces parameter drift over lifetime and improves stability under high-humidity conditions |
| MSL Level 1 (260 °C peak) | Enables standard lead-free reflow without moisture sensitivity concerns or baking requirements |
| 1.1 mm typical height | Minimizes board-level clearance issues in stacked or shielded automotive modules |
| Halogen-free & RoHS-compliant | Meets ELV Directive and automotive OEM material compliance requirements (e.g., GMW3172, Ford WSS-M99P9999-A1) |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from ESD and load-dump transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector or IC input pins to clamp surges before they reach sensitive interface circuitry. Use Value: Clamps 40 A transients to ≤37.5 V while maintaining <1.0 μA leakage - preserving signal integrity and enabling fail-safe operation per ISO 16750-2. | Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Primary surge suppression element on 24 V DC I/O lines, positioned upstream of optocouplers or level shifters. Use Value: 1500 W peak power rating and 185 °C operation ensure sustained protection in hot, dusty factory environments without thermal shutdown. |
| Automotive Power Distribution | Consumer Appliance Motor Control |
Use Scenario: Suppressing inductive kickback from solenoids, fuel injectors, and relays in 12 V/24 V power distribution modules. IC Role / Device Role / Timing Role: Parallel-connected TVS across inductive loads to limit back-EMF spikes seen by power switches and microcontrollers. Use Value: Fast response time and 37.5 V clamping prevent MOSFET avalanche failure and reduce need for oversized gate drivers. | Use Scenario: Protecting motor driver ICs and MCU GPIOs in washing machines, HVAC blowers, and power tools exposed to motor commutation noise. IC Role / Device Role / Timing Role: Secondary-level transient suppressor on low-voltage control signals feeding H-bridge drivers. Use Value: Low-profile SMPC package allows placement adjacent to connectors without interfering with mechanical enclosures or heatsinks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/5AT (Vishay) | Unidirectional, 24 V VWM, 38.9 V VC @ 38.8 A, SMA package (4.5 mm × 2.7 mm) | Requires correct polarity orientation; larger footprint and 2.2 mm height limits dense layout | Select when unidirectional protection suffices and board space permits larger package |
| TPC27CAHM3/H (Vishay) | Identical electrical specs; differs only in tape-and-reel packaging (7" vs. 13" reel, 1500 vs. 6500 units) | No functional or application difference - same performance, same mounting, same qualification | Choose based on production volume and SMT line feeder compatibility |
Compared with SMAJ24A-E3/5AT, TPC27CAHM3/I offers bidirectional operation and smaller footprint; compared with TPC27CAHM3/H, it provides identical protection performance but higher reel quantity for high-volume manufacturing runs.
Availability
TPC27CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and 24 V power distribution systems requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for TPC27CAHM3/I 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 MOSFETs with emphasis on reliability, efficiency, and automotive-grade qualification.
The TPCxxCA series belongs to Vishay's PAR®-enhanced TVS family, engineered specifically for robust, low-profile transient suppression in harsh automotive and industrial environments where high junction temperature tolerance and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum clamping voltage of the TPC27CAHM3/I under rated surge conditions?
The TPC27CAHM3/I has a maximum clamping voltage (VC) of 37.5 V when subjected to its rated 40 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream 24 V system components remain within safe operating limits during transient events. The TPC27CAHM3/I maintains this clamping performance across its full operating temperature range.
Is the TPC27CAHM3/I suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the TPC27CAHM3/I is explicitly AEC-Q101 qualified, as confirmed in Vishay's official documentation (Document Number: 87649). Its construction, testing, and packaging meet all stress test requirements for automotive use, including temperature cycling, highly accelerated life testing, and electrostatic discharge. The HM3 suffix denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified production.
What does the "HM3" suffix indicate in TPC27CAHM3/I?
The "HM3" suffix in TPC27CAHM3/I identifies the product as halogen-free, RoHS-compliant, and AEC-Q101 qualified - consistent across the TPCxxCA family. It also specifies the terminal finish (matte tin) and whisker resistance (JESD 201 Class 2). The "I" denotes 13-inch tape-and-reel packaging containing 6500 units, distinguishing it from the "H" variant (7-inch reel, 1500 units).
Can the TPC27CAHM3/I be used in bidirectional signal line protection?
Yes, the TPC27CAHM3/I is inherently bidirectional and requires no polarity marking or orientation during placement. Its symmetrical VBR (25.7–28.4 V) and identical clamping behavior in both directions make it ideal for protecting differential buses like CAN, LIN, or RS-485, where voltage transients may occur with either polarity relative to ground.
What is the thermal performance limit of the TPC27CAHM3/I?
The TPC27CAHM3/I supports a maximum junction temperature (TJ) of +185 °C, verified per AEC-Q101 testing. This enables reliable operation in high-temperature automotive locations such as engine compartments or near power converters. Derating curves in the datasheet show usable pulse power remains above 80% even at 125 °C ambient, provided board thermal design meets recommended pad layout guidelines.
TPC27CAHM3/I 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/I FAQ
1.How can I place an order for TPC27CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC27CAHM3/I 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/I reliable?
The price and inventory of TPC27CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC27CAHM3/I is usually 5 days.
3.What payment methods are accepted for TPC27CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC27CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC27CAHM3/I?
TPC27CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC27CAHM3/I 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/I?
For technical support, including TPC27CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC27CAHM3/I requirements.
6.How does Aetrix verify that TPC27CAHM3/I is sourced from the original manufacturer or authorized distributors?
All TPC27CAHM3/I 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/I meets industry standards.
7.What is the process for return or replacement of TPC27CAHM3/I?
All TPC27CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with TPC27CAHM3/I, 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/I part is unused and in its original packaging.
Return procedure for TPC27CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC27CAHM3/I Tags
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