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Vishay General Semiconductor - Diodes Division TPC27AHM3/87A
- Part No.:
- TPC27AHM3/87A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC27AHM3/87A.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:3,768
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Product details
Overview
TPC27AHM3/87A 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 25.7–28.4 V at 1 mA, clamping voltage of 37.5 V at 40 A peak pulse current, and operates up to +185 °C junction temperature.
For engineers reviewing the TPC27AHM3/87A datasheet, TPC27AHM3/87A pinout, TPC27AHM3/87A application, or TPC27AHM3/87A equivalent, key selection criteria include unidirectional clamping performance, AEC-Q101 qualification, low-profile 1.1 mm height, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on power rails and sensor signal lines.
Technical Context
The TPC27AHM3/87A employs passivated anisotropic rectifier technology optimized for fast response (<1 ns) and low incremental surge resistance. Its unidirectional architecture provides forward conduction during overvoltage events while maintaining low leakage (<1 μA at 23.1 V) and stable breakdown tolerance (±5 %).
Rated for 10/1000 μs waveform surges up to 1500 W and 8.3 ms half-sine IFSM of 200 A, it supports high-energy transients common in automotive load-dump and inductive switching scenarios. The device's TJ = –65 °C to +185 °C range and AEC-Q101 qualification confirm suitability for under-hood and engine-control module environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPPM) | 1500 W - sustains high-energy transients per 10/1000 μs waveform without failure |
| Breakdown Voltage (VBR) | 25.7–28.4 V at 1 mA - defines precise clamping onset threshold for 27 V nominal systems |
| Clamping Voltage (VC) | 37.5 V at 40 A IPPM - limits downstream voltage stress during surge events |
| Standoff Voltage (VWM) | 23.1 V - maximum continuous reverse voltage before leakage exceeds 1 μA |
| Junction Temperature Range | –65 °C to +185 °C - enables operation in extreme automotive under-hood environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability per stress-test requirements |
| Package | SMPC (TO-277A) - surface-mount, low-profile (1.1 mm), MSL Level 1, halogen-free |
Pinout & Package
TPC27AHM3/87A uses the SMPC (TO-277A) package: 3-terminal surface-mount case with cathode band marking on terminal 1, cathode on terminal 2, and anode on terminal 3. Dimensions conform to JEDEC TO-277A standard; mounting pad layout requires 0.268″ × 0.186″ footprint with 0.050″ minimum solder mask clearance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode Band) | Cathode | Primary cathode connection; marked side indicates polarity for unidirectional clamping |
| 2 (Cathode) | Cathode | Second cathode terminal - parallel-connected internally with Pin 1 for enhanced surge current handling |
| 3 (Anode) | Anode | Common anode node; connects to ground or low-side reference in clamp-to-rail configuration |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design ensures stable VBR drift <0.087 %/°C and long-term leakage stability |
| Low profile height | 1.1 mm typical - enables use in space-constrained modules including ADAS ECUs and battery management units |
| Automated placement compatibility | Matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 - supports high-yield reflow assembly |
| Whisker resistance | HM3 suffix qualified to JESD 201 Class 2 - eliminates tin whisker risk in long-life automotive applications |
| Flammability rating | UL 94 V-0 molding compound - meets safety requirements for enclosed vehicle electronics |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Power Stage |
|---|---|
Use Scenario: Protection of 24 V supply rail against ISO 7637-2 load-dump transients up to 60 V/100 ms. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery input and DC-DC converter input stage. Use Value: Limits rail voltage to ≤37.5 V during 40 A surge, preventing damage to downstream PMICs and microcontrollers rated for 36 V max. |
Use Scenario: Safeguarding gate drivers and current-sense amplifiers from inductive kickback during IGBT switching. IC Role / Device Role / Timing Role: Fast-clamping TVS across motor-phase output lines to suppress dV/dt-induced coupling. Use Value: Sub-1 ns response time and 37.5 V clamping prevent false triggering of overvoltage protection circuits in real-time control loops. |
| Automotive Camera Module Power Input | Telecom Base Station Sensor Interface |
Use Scenario: Shielding 12 V camera power input from ignition noise and alternator ripple spikes. IC Role / Device Role / Timing Role: Standoff-mode TVS connected between VCC and GND to absorb repetitive low-energy transients. Use Value: 1 μA leakage at 23.1 V ensures minimal quiescent current draw, preserving battery life in always-on vision systems. |
Use Scenario: Protecting RS-485 transceiver signal lines from ESD and lightning-induced surges in outdoor base stations. IC Role / Device Role / Timing Role: Unidirectional TVS placed on receiver input line referenced to local ground plane. Use Value: 185 °C max junction temperature allows reliable operation inside sealed, thermally insulated enclosures exposed to desert ambient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ28A | Lower PPPM (400 W), higher VBR (29.1–32.2 V), SMA package (higher thermal resistance) | Limited to lower-energy transients; not AEC-Q101 qualified; unsuitable for under-hood deployment | Select when cost-sensitive consumer designs require basic 28 V clamping without automotive qualification |
| TPC27AHM3/87A | 1500 W PPPM, tighter VBR (25.7–28.4 V), TO-277A package, AEC-Q101 qualified | Validated for automotive load-dump and industrial motor drive surge profiles | Preferred for high-reliability 24 V systems requiring extended temperature and lifetime validation |
Compared with SMAJ28A and P6SMB27A, TPC27AHM3/87A delivers 3.75× higher surge power handling, ±5 % VBR tolerance versus ±10 %, and guaranteed operation to +185 °C-enabling single-source robustness in mission-critical power rail protection without derating or parallel devices.
Availability
TPC27AHM3/87A is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drives, telecom base station sensor interfaces, and ADAS camera modules requiring stable component supply and long-term lifecycle support.
Supply support for TPC27AHM3/87A 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 MOSFETs with emphasis on reliability, efficiency, and automotive-grade qualification.
The TPC27AHM3/87A belongs to Vishay's PAR® series of high-power TVS diodes, engineered specifically for AEC-Q101-compliant transient suppression in harsh-environment 12 V/24 V automotive and industrial power systems.
FAQ
What is the clamping voltage of TPC27AHM3/87A at its rated peak pulse current?
The TPC27AHM3/87A has a maximum clamping voltage (VC) of 37.5 V at 40 A peak pulse current (IPPM), measured under 10/1000 μs waveform conditions. This value ensures downstream ICs rated for ≤40 V operation remain within safe operating limits during surge events. The TPC27AHM3/87A maintains this clamping performance across its full operating temperature range.
Is TPC27AHM3/87A suitable for automotive under-hood applications?
Yes, TPC27AHM3/87A is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood automotive applications such as engine control units and transmission control modules. Its SMPC (TO-277A) package and halogen-free construction meet stringent automotive material and reliability requirements.
What does the "HM3/87A" suffix indicate in TPC27AHM3/87A?
The "HM3" denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101-qualified SMPC package with matte tin plating and JESD 201 Class 2 whisker resistance. The "87A" is the revision code indicating manufacturing lot and process version per Vishay's internal tracking system for traceability and qualification consistency.
How does TPC27AHM3/87A compare to bidirectional TVS diodes in surge protection?
TPC27AHM3/87A is unidirectional and optimized for DC power rail protection where reverse voltage is blocked by system design. Unlike bidirectional TVS diodes, it offers lower leakage (<1 μA at VWM) and tighter VBR tolerance (±5 %), improving efficiency and precision in 24 V automotive systems. Bidirectional variants would introduce unnecessary conduction paths in such applications.
What is the standoff voltage (VWM) rating for TPC27AHM3/87A?
The standoff voltage (VWM) for TPC27AHM3/87A is 23.1 V - the maximum continuous reverse voltage at which leakage remains ≤1 μA at 25 °C. This rating ensures compatibility with 24 V nominal systems while providing sufficient margin above normal operating voltage to avoid false triggering during ripple or transient excursions.
TPC27AHM3/87A 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):
- 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 ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC)
TPC27AHM3/87A FAQ
1.How can I place an order for TPC27AHM3/87A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC27AHM3/87A 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 TPC27AHM3/87A reliable?
The price and inventory of TPC27AHM3/87A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC27AHM3/87A is usually 5 days.
3.What payment methods are accepted for TPC27AHM3/87A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC27AHM3/87A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC27AHM3/87A?
TPC27AHM3/87A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC27AHM3/87A 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 TPC27AHM3/87A?
For technical support, including TPC27AHM3/87A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC27AHM3/87A requirements.
6.How does Aetrix verify that TPC27AHM3/87A is sourced from the original manufacturer or authorized distributors?
All TPC27AHM3/87A 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 TPC27AHM3/87A meets industry standards.
7.What is the process for return or replacement of TPC27AHM3/87A?
All TPC27AHM3/87A units undergo pre-shipment inspection (PSI). If there is an issue with TPC27AHM3/87A, 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 TPC27AHM3/87A part is unused and in its original packaging.
Return procedure for TPC27AHM3/87A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC27AHM3/87A Tags
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