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Vishay General Semiconductor - Diodes Division TPC43HM3/87A
- Part No.:
- TPC43HM3/87A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC43HM3/87A.pdf
- Description:
- TVS DIODE 34.8VWM 61.9VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:8,215
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Product details
Overview
TPC43HM3/87A 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 43.0 V nominal breakdown voltage (VBR), 36.8 V stand-off voltage (VWM), clamping voltage of 59.3 V at 25.3 A peak pulse current, and operates up to +185 °C junction temperature.
For engineers reviewing the TPC43HM3/87A datasheet, TPC43HM3/87A pinout, TPC43HM3/87A application, or TPC43HM3/87A equivalent, key selection criteria include unidirectional polarity, MSL Level 1 moisture sensitivity, AEC-Q101 qualification, low-profile 1.1 mm height, and compatibility with automated SMT placement on power rails and sensor signal lines.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for fast response (<1 ns) and low incremental surge resistance. Its unidirectional architecture provides robust clamping during positive-going transients while maintaining low leakage (<1 μA at VWM) at 25 °C and <20 μA at 150 °C.
The device is rated for 1500 W peak pulse power (10/1000 μs waveform), supports 200 A non-repetitive forward surge current (8.3 ms half-sine), and delivers 3.5 V maximum forward voltage at 100 A - enabling effective overvoltage protection without compromising system efficiency under fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nominal) | 43.0 V - precise breakdown threshold ensures reliable triggering before downstream IC damage |
| VWM | 36.8 V - maximum continuous reverse operating voltage compatible with 36 V automotive systems |
| VC @ IPPM | 59.3 V - clamping voltage limits stress on protected circuitry during 25.3 A transient events |
| PPPM | 1500 W - high-energy absorption capacity for inductive load switching and load dump surges |
| TJ max. | +185 °C - extended thermal range supports under-hood automotive and industrial environments |
| Package | SMPC (TO-277A) - ultra-low profile (1.1 mm typical height), AEC-Q101 qualified, MSL Level 1 |
| Polarity | Unidirectional - protects against positive transients only; requires correct orientation in series with power/signal line |
Pinout & Package
TPC43HM3/87A is housed in a 3-terminal SMPC (TO-277A) surface-mount package with cathode band marking on terminal 1. The package features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Anode-side reference node | Connected to protected line; cathode band identifies polarity for correct PCB orientation |
| 2 (Cathode) | Common cathode connection | Internally tied to Pin 1; dual-cathode configuration enables higher surge current handling |
| 3 (Anode) | Ground return path | Connected to system ground or low-impedance return plane; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| MSL Level 1 | Zero floor life limitation - no bake requirement prior to reflow, supporting standard SMT assembly processes |
| 1.1 mm typical height | Enables compact layout in space-constrained modules such as ADAS ECUs and battery management systems |
| Low incremental surge resistance | Minimizes VC rise under high di/dt transients, improving clamping precision for sensitive 3.3 V/5 V logic interfaces |
| Junction passivation | Reduces leakage drift and enhances long-term stability in humid or high-temperature operating environments |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V supply rails in engine control units against ISO 7637-2 load dump and inductive switching transients. IC Role / Device Role / Timing Role: Primary clamping element placed between fuse and DC-DC converter input, absorbing >1500 W surges within nanoseconds. Use Value: Prevents latch-up or permanent damage to downstream PMICs and microcontrollers during cold-crank and alternator regulation faults. | Use Scenario: Safeguarding analog output lines of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional TVS connected in series with 4–20 mA loop or differential RS-485 bus lines to suppress EFT and surge coupling. Use Value: Maintains signal integrity by limiting transient-induced offset errors and preventing ADC saturation during EMC immunity testing. |
| Telecom DC Power Input Protection | Consumer Device USB Power Path Protection |
Use Scenario: Securing -48 V DC input of telecom base station power supplies against lightning-induced surges on outdoor feeder lines. IC Role / Device Role / Timing Role: Front-end TVS mounted directly at connector entry point, shunting energy before upstream DC-DC isolation stage. Use Value: Enables compliance with IEC 61000-4-5 Level 4 (4 kV line-earth) without derating or parallel device stacking. | Use Scenario: Adding secondary overvoltage protection on VBUS line of USB-C PD chargers where primary OVP may be slow or absent. IC Role / Device Role / Timing Role: Fast-clamping TVS placed after USB-C CC logic but before buck converter input to block 20 V+ fault conditions. Use Value: Prevents catastrophic failure of USB PD controller ICs during adapter misconnection or cable short-to-VBUS events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A-E3/57T | Lower PPPM (400 W), SMA package (higher thermal resistance), VC = 69.4 V at 5.8 A | Not suitable for 1500 W load dump; limited to low-energy ESD/EFT in consumer electronics | Select when cost-sensitive, lower-power protection suffices and board space allows larger SMA footprint |
| TPC43HMF3/87A | Same electrical specs, but HM3_F suffix indicates halogen-free molding compound and alternate reel packaging (7" vs. 13") | No functional difference; identical performance and qualification status | Choose for RoHS-compliant material requirements or specific tape-and-reel logistics integration |
Compared with SMAJ43A-E3/57T, TPC43HM3/87A delivers 3.75× higher surge power handling and tighter clamping for automotive-grade robustness; versus TPC43HMF3/87A, it differs only in packaging format and reel size - not electrical behavior or reliability.
Availability
TPC43HM3/87A is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply across multi-year production cycles.
Supply support for TPC43HM3/87A 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 targets high-energy transient suppression in harsh environments, with design focus on AEC-Q101 compliance, ultra-low profile packaging, and consistent clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of the TPC43HM3/87A at its rated peak pulse current?
The TPC43HM3/87A has a maximum clamping voltage (VC) of 59.3 V at 25.3 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per JEDEC-standard test methods and ensures predictable overvoltage limiting during surge events. The TPC43HM3/87A maintains this clamping performance across its full operating temperature range, supporting robust protection in automotive and industrial applications.
Is the TPC43HM3/87A suitable for automotive applications?
Yes, the TPC43HM3/87A is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and powertrain applications. Its SMPC (TO-277A) package meets MSL Level 1, eliminating bake requirements before reflow, and its 1500 W peak pulse power rating addresses ISO 7637-2 load dump and inductive switching transients. The TPC43HM3/87A is explicitly designed for automotive-grade reliability and environmental resilience.
What does the 'HM3/87A' suffix indicate in TPC43HM3/87A?
The 'HM3' denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101-qualified molding compound and matte tin-plated terminals meeting JESD 201 Class 2 whisker resistance. The '/87A' specifies the revision code and packaging variant - in this case, indicating 13" diameter tape-and-reel delivery with 6500 units per reel. The TPC43HM3/87A shares identical electrical characteristics with other TPC43A variants differing only in packaging and material compliance codes.
How does the dual-cathode configuration of the TPC43HM3/87A improve performance?
The TPC43HM3/87A uses a dual-cathode (Pins 1 and 2) configuration within the SMPC (TO-277A) package to reduce parasitic inductance and distribute surge current across parallel internal paths. This lowers incremental surge resistance and improves clamping consistency during high-di/dt events. The design enhances thermal dissipation and enables the TPC43HM3/87A to sustain 1500 W peak pulse power without derating at elevated ambient temperatures.
Can the TPC43HM3/87A be used in bidirectional protection circuits?
No, the TPC43HM3/87A is strictly unidirectional and must be oriented with its cathode toward the protected line and anode to ground. It does not provide protection against negative-going transients. For bidirectional applications, a separate device such as the TPSMB43CA or equivalent symmetric TVS is required. Using the TPC43HM3/87A in reverse bias beyond its 36.8 V stand-off voltage risks premature conduction and unreliable protection behavior.
TPC43HM3/87A 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):
- 34.8V
- Voltage - Breakdown (Min):
- 38.7V
- Voltage - Clamping (Max) @ Ipp:
- 61.9V
- Current - Peak Pulse (10/1000µs):
- 24.2A
- 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)
TPC43HM3/87A FAQ
1.How can I place an order for TPC43HM3/87A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC43HM3/87A 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 TPC43HM3/87A reliable?
The price and inventory of TPC43HM3/87A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC43HM3/87A is usually 5 days.
3.What payment methods are accepted for TPC43HM3/87A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC43HM3/87A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC43HM3/87A?
TPC43HM3/87A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC43HM3/87A 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 TPC43HM3/87A?
For technical support, including TPC43HM3/87A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC43HM3/87A requirements.
6.How does Aetrix verify that TPC43HM3/87A is sourced from the original manufacturer or authorized distributors?
All TPC43HM3/87A 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 TPC43HM3/87A meets industry standards.
7.What is the process for return or replacement of TPC43HM3/87A?
All TPC43HM3/87A units undergo pre-shipment inspection (PSI). If there is an issue with TPC43HM3/87A, 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 TPC43HM3/87A part is unused and in its original packaging.
Return procedure for TPC43HM3/87A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC43HM3/87A Tags
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