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Vishay General Semiconductor - Diodes Division TPC47AHM3/87A
- Part No.:
- TPC47AHM3/87A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC47AHM3/87A.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:6,223
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Product details
Overview
TPC47AHM3/87A 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 standoff voltage of 40.2 V, breakdown voltage of 47.0 V (min), clamping voltage of 64.8 V at 23.1 A, and operates up to +185 °C junction temperature.
For engineers reviewing the TPC47AHM3/87A datasheet, TPC47AHM3/87A pinout, TPC47AHM3/87A application, or TPC47AHM3/87A equivalent, key selection criteria include peak pulse power rating, clamping performance under 10/1000 µs waveform, AEC-Q101 qualification, low-profile SMPC footprint, and thermal robustness for under-hood or motor-control environments.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for low incremental surge resistance and fast response time (<1 ns). Its unidirectional architecture provides precise reverse-biased clamping with minimal leakage (1.0 µA at VWM) and stable breakdown voltage temperature coefficient (0.092 %/°C).
The device is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine) and supports automated SMT placement due to matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. It meets MSL Level 1 per J-STD-020 and is halogen-free, RoHS-compliant, and AEC-Q101 qualified.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40.2 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min) | 44.7 V - guaranteed minimum breakdown voltage at 1.0 mA test current |
| VC @ IPPM | 64.8 V - clamping voltage at 23.1 A peak pulse current (10/1000 µs) |
| PPPM | 1500 W - peak pulse power handling capability under standardized surge waveform |
| TJ max | +185 °C - enables use in high-temperature automotive engine compartments |
| Polarity | Unidirectional - protects against positive transients only; requires correct orientation in circuit |
| Package | SMPC (TO-277A) - ultra-low profile (1.1 mm typical height), 3-terminal surface-mount case |
Pinout & Package
Package: SMPC (TO-277A), 3-terminal surface-mount case with cathode band marking. Dimensions conform to JEDEC TO-277A standard; mounting pad layout specified for optimal thermal and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during clamping | Connected to protected line (e.g., power rail or signal); conducts surge current to ground via cathodes |
| Cathode 1 | Common cathode terminal | Internally tied to Cathode 2; both serve as low-inductance return path to ground |
| Cathode 2 | Common cathode terminal | Dual-cathode configuration reduces effective series inductance for faster clamping response |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress |
| Junction passivation | Enhanced long-term stability and reduced parameter drift under thermal and electrical stress |
| MSL Level 1 | Unlimited floor life at ≤30 °C / 60 % RH - no bake required prior to reflow |
| Low profile (1.1 mm) | Enables compact PCB layouts in space-constrained modules such as ECUs and ADAS sensors |
| Halogen-free & RoHS | Complies with environmental regulations without compromising surge performance or thermal capability |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed microcontroller power supplies from load-dump and jump-start transients in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND to clamp surges above 40.2 V before reaching downstream regulators and logic ICs. Use Value: Clamps 1500 W surges to ≤64.8 V within nanoseconds, preventing latch-up or permanent damage to 5 V/3.3 V logic rails. | Use Scenario: Safeguarding analog input channels and encoder feedback lines in servo drives exposed to inductive switching noise. IC Role / Device Role / Timing Role: TVS mounted at connector interface to shunt fast-rising transients induced by contactor switching or brake resistor activation. Use Value: Dual-cathode low-inductance structure ensures sub-1 ns response, preserving signal integrity on ±10 V analog inputs and quadrature encoder signals. |
| Telecom DC Power Interface | Consumer Appliance Control Board |
Use Scenario: Surge suppression on 48 V PoE-powered base station backplanes subjected to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping device on DC input rail upstream of DC/DC converters and Ethernet PHYs. Use Value: Withstands 200 A 8.3 ms surge and maintains <1 µA leakage at 40.2 V, ensuring low standby power loss and long-term reliability. | Use Scenario: Protecting MCU GPIOs and relay drivers in washing machine main control boards from relay coil flyback and pump motor commutation spikes. IC Role / Device Role / Timing Role: Localized TVS on each high-side switch output to limit voltage overshoot during turn-off. Use Value: 185 °C junction rating allows placement near heat-generating triacs and transformers without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A-E3/57T | Lower PPPM (400 W), SMA package (higher thermal resistance), VWM = 36.8 V, VC = 69.4 V @ 5.8 A | Not AEC-Q101 qualified; limited to commercial/industrial ambient (TJ max = +150 °C) | Use where cost sensitivity outweighs automotive qualification and higher surge energy handling |
| TPC43AHM3/87A | Lower VWM (36.8 V), lower VC (59.3 V @ 25.3 A), same SMPC package and AEC-Q101 qualification | Better suited for 36 V nominal systems (e.g., dual-battery telecom) requiring tighter clamping margin | Select when system VMAX is below 40 V and lower clamping voltage improves safety margin |
Compared with SMAJ43A-E3/57T, TPC47AHM3/87A delivers 275 % higher surge power handling and automotive-grade reliability; compared with TPC43AHM3/87A, it offers higher working voltage headroom for 48 V systems while maintaining identical thermal and packaging advantages.
Availability
TPC47AHM3/87A is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor drive development, and telecom power interface protection requiring stable component supply and long-term lifecycle support.
Supply support for TPC47AHM3/87A 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 is part of Vishay's PAR® family of high-power TVS diodes engineered specifically for automotive and industrial environments demanding AEC-Q101 compliance, high-temperature operation, and robust transient immunity.
FAQ
What is the clamping voltage of the TPC47AHM3/87A under standard 10/1000 µs surge conditions?
The TPC47AHM3/87A has a maximum clamping voltage (VC) of 64.8 V when subjected to its rated peak pulse current of 23.1 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and reflects worst-case performance across temperature and manufacturing lot variation. The TPC47AHM3/87A achieves this clamping level while maintaining low incremental surge resistance for effective energy diversion.
Is the TPC47AHM3/87A qualified for automotive applications?
Yes, the TPC47AHM3/87A is AEC-Q101 qualified and explicitly rated for automotive-grade reliability. It undergoes rigorous stress testing including high-temperature reverse bias (HTRB), temperature cycling, and ESD per AEC-Q101 requirements. Its +185 °C maximum junction temperature and halogen-free, RoHS-compliant construction further support deployment in engine control units, body electronics, and ADAS modules.
What does the HM3/87A suffix indicate in TPC47AHM3/87A?
The HM3/87A suffix denotes Vishay's standard packaging and revision coding: "HM3" specifies halogen-free, RoHS-compliant construction in SMPC (TO-277A) package with matte tin-plated leads meeting J-STD-002 solderability; "87A" indicates the revision level and tape-and-reel delivery format (7-inch reel, 1500 units). This coding aligns with Vishay's ordering nomenclature in Document 89056.
Can the TPC47AHM3/87A be used in bidirectional protection circuits?
No, the TPC47AHM3/87A is unidirectional only and must be oriented with anode toward the protected line and cathodes toward ground. For bidirectional protection, a separate symmetric TVS or back-to-back configuration would be required. The device's electrical characteristics-including breakdown voltage, leakage, and clamping-are specified exclusively for reverse-biased operation.
What is the thermal resistance and mounting guidance for the TPC47AHM3/87A?
The TPC47AHM3/87A uses the SMPC (TO-277A) package with recommended copper pad layout per Vishay's outline drawing: 0.268 × 0.186 inch (6.80 × 4.72 mm) total pad area with 2 oz. copper. Thermal impedance data shows RthJA ≈ 45 °C/W when mounted per spec. Proper thermal relief and ground plane connection are essential to sustain 1500 W pulse dissipation and maintain TJ ≤ +185 °C.
TPC47AHM3/87A 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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 23.1A
- 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)
TPC47AHM3/87A FAQ
1.How can I place an order for TPC47AHM3/87A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC47AHM3/87A 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 TPC47AHM3/87A reliable?
The price and inventory of TPC47AHM3/87A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC47AHM3/87A is usually 5 days.
3.What payment methods are accepted for TPC47AHM3/87A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC47AHM3/87A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC47AHM3/87A?
TPC47AHM3/87A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC47AHM3/87A 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 TPC47AHM3/87A?
For technical support, including TPC47AHM3/87A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC47AHM3/87A requirements.
6.How does Aetrix verify that TPC47AHM3/87A is sourced from the original manufacturer or authorized distributors?
All TPC47AHM3/87A 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 TPC47AHM3/87A meets industry standards.
7.What is the process for return or replacement of TPC47AHM3/87A?
All TPC47AHM3/87A units undergo pre-shipment inspection (PSI). If there is an issue with TPC47AHM3/87A, 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 TPC47AHM3/87A part is unused and in its original packaging.
Return procedure for TPC47AHM3/87A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC47AHM3/87A Tags
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