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Vishay General Semiconductor - Diodes Division TPC43AHM3_A/I
- Part No.:
- TPC43AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC43AHM3_A/I.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:7,586
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Product details
Overview
TPC43AHM3_A/I from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in TO-277A (SMPC) package, with breakdown voltage 40.9–45.2 V at 1 mA, clamping voltage 59.3 V at 25.3 A peak pulse current, and junction temperature rating up to +185 °C. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning surges in automotive and industrial power electronics.
For engineers reviewing the TPC43AHM3_A/I datasheet, TPC43AHM3_A/I pinout, TPC43AHM3_A/I application, or TPC43AHM3_A/I equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, TO-277A mechanical dimensions, clamping performance under 10/1000 µs surge, and real-world use cases in automotive ECUs and industrial motor drives.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of fast-rising transients induced by inductive load switching. Its unidirectional polarity and 36.8 V stand-off voltage allow integration into DC power rails where reverse conduction must be blocked.
The device operates across -65 °C to +185 °C junction temperature range and meets MSL Level 1 per J-STD-020, supporting lead-free reflow assembly without moisture sensitivity concerns. Its 1.1 mm typical height and matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at 1 mA - defines reliable turn-on threshold for overvoltage clamping |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 59.3 V at 25.3 A - peak clamped voltage during 10/1000 µs surge, limiting stress on downstream components |
| PPPM | 1500 W - peak pulse power handling capability under standardized 10/1000 µs waveform |
| TJ max. | +185 °C - enables use in high-temperature automotive under-hood environments |
| Polarity | Unidirectional - blocks reverse current while clamping positive transients on DC supply lines |
| Package | TO-277A (SMPC) - surface-mount, low-profile (1.1 mm), AEC-Q101 qualified, halogen-free |
Pinout & Package
TO-277A (SMPC) is a 3-terminal surface-mount package with cathode-anode-cathode configuration. Terminals are matte tin-plated for robust solderability and whisker resistance (JESD 201 Class 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-biased terminal | Connected to protected line; conducts when voltage exceeds VBR |
| 2 (Anode) | Reference/ground node | Typically tied to system ground or low-side return path |
| 3 (Cathode) | Reverse-biased terminal | Electrically common with Pin 1; enables dual-cathode layout for thermal and layout symmetry |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| 185 °C junction rating | Supports operation in engine control units and power inverters without derating at high ambient temperatures |
| 1.1 mm profile | Enables compact PCB layouts in space-constrained modules such as ADAS sensors and battery management systems |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for sensitive gate drivers |
| MSL Level 1 rating | Eliminates pre-bake requirement prior to reflow, reducing manufacturing cost and process complexity |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Power Stage |
|---|---|
Use Scenario: Protecting microcontroller I/O and power MOSFET gate drivers from load dump and inductive kickback in 12 V/24 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between gate driver output and MOSFET gate, clamping transients before they exceed gate oxide breakdown voltage. Use Value: Prevents gate oxide damage and latch-up events with 59.3 V clamping at 25.3 A, compatible with 40 V-rated logic-level MOSFETs. | Use Scenario: Safeguarding PWM controller outputs and current-sense amplifier inputs against flyback spikes from BLDC motor windings. IC Role / Device Role / Timing Role: TVS connected across half-bridge leg supply rails to clamp commutation-induced voltage spikes. Use Value: Limits rail voltage excursions to ≤59.3 V during 10/1000 µs surges, preserving isolation barrier integrity and ADC reference stability. |
| Telecom Power Supply Input | Consumer Appliance Mainboard |
Use Scenario: Surge protection on AC/DC adapter input stage subjected to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary-line TVS placed after bridge rectifier and before bulk capacitor to absorb differential-mode transients. Use Value: Handles 1500 W peak pulse power with 36.8 V stand-off, ensuring compliance with EN 61000-4-5 Level 3 (2 kV) without upstream fusing. | Use Scenario: Protecting microcontroller reset lines and communication interfaces (UART, I²C) from ESD and relay bounce in washing machine control boards. IC Role / Device Role / Timing Role: Low-capacitance TVS installed directly at connector entry points to shunt fast ESD pulses. Use Value: Sub-1 ns response time and 1 μA leakage at 36.8 V prevent false resets and bus contention during normal operation. |
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 (Vishay) | Same VBR range (40.9–45.2 V), but lower PPPM = 400 W and SMA package (higher thermal resistance) | Not AEC-Q101 qualified; limited to commercial-temperature consumer applications | Select when cost-sensitive non-automotive designs require basic 43 V clamping without high-power or automotive qualification |
| TPC43AHE3_A/I (Vishay) | Identical electrical specs and TO-277A package, but HM3 suffix indicates halogen-free, RoHS-compliant, and AEC-Q101 qualified version; HE3 denotes alternate tape/reel packaging | No functional difference; same automotive and industrial use cases | Choose for identical performance with alternate logistics coding-verify reel size (13" vs. 7") and base quantity alignment with production planning |
Compared with SMAJ43A-E3/57T, TPC43AHM3_A/I delivers 3.75× higher surge power handling and automotive qualification, while TPC43AHE3_A/I offers identical protection performance with different packaging logistics-making TPC43AHM3_A/I optimal for high-reliability 24 V automotive power stages requiring validated AEC-Q101 compliance.
Availability
TPC43AHM3_A/I is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drive power stages, telecom power supply inputs, and consumer appliance mainboards requiring stable component supply and long-term lifecycle support.
Supply support for TPC43AHM3_A/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 optoelectronics with emphasis on reliability, power efficiency, and automotive-grade qualification.
The TPC series was developed specifically for high-power, high-temperature transient suppression in automotive and industrial power electronics, combining AEC-Q101 qualification, 185 °C operation, and low-profile TO-277A packaging for next-generation ECU and inverter designs.
FAQ
What is the clamping voltage of the TPC43AHM3_A/I under a 10/1000 µs surge?
The TPC43AHM3_A/I has a maximum clamping voltage (VC) of 59.3 V when subjected to a 10/1000 µs waveform at its rated peak pulse current of 25.3 A. This value is measured per ANSI/IEEE C62.35 and ensures downstream components like 40 V MOSFETs remain within safe operating limits during transient events. The TPC43AHM3_A/I maintains this clamping performance across its full operating temperature range.
Is the TPC43AHM3_A/I qualified for automotive applications?
Yes, the TPC43AHM3_A/I is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood automotive applications including engine control units and body control modules. Its TO-277A package meets JESD 201 Class 2 whisker resistance requirements, and the device is halogen-free and RoHS-compliant per Vishay's material categorization standard.
What does the "HM3_A/I" suffix mean in TPC43AHM3_A/I?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification; "A" is the revision code; "I" indicates packaging in 13-inch diameter plastic tape and reel with a base quantity of 6500 units. This distinguishes it from "H"-coded variants (7-inch reel, 1500 units) and confirms compliance with automotive and environmental standards required for modern production.
How does the TPC43AHM3_A/I compare to standard SMAJ-series TVS diodes?
The TPC43AHM3_A/I provides 1500 W peak pulse power-3.75× higher than the 400 W rating of SMAJ43A-E3/57T-and uses the thermally superior TO-277A package instead of SMA. Unlike SMAJ devices, TPC43AHM3_A/I is AEC-Q101 qualified and rated for +185 °C operation, enabling use in demanding automotive and industrial environments where SMAJ parts would require derating or fail qualification.
What is the leakage current specification for TPC43AHM3_A/I at its stand-off voltage?
At the stand-off voltage (VWM) of 36.8 V and ambient temperature of 25 °C, the TPC43AHM3_A/I exhibits a maximum reverse leakage current (IR) of 1.0 μA. At elevated junction temperature (150 °C), leakage increases to no more than 15 μA-still well below thresholds that could disrupt bias networks or cause false triggering in precision analog circuits using the TPC43AHM3_A/I.
TPC43AHM3_A/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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 25.3A
- 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)
TPC43AHM3_A/I FAQ
1.How can I place an order for TPC43AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC43AHM3_A/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 TPC43AHM3_A/I reliable?
The price and inventory of TPC43AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC43AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TPC43AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC43AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC43AHM3_A/I?
TPC43AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC43AHM3_A/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 TPC43AHM3_A/I?
For technical support, including TPC43AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC43AHM3_A/I requirements.
6.How does Aetrix verify that TPC43AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TPC43AHM3_A/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 TPC43AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TPC43AHM3_A/I?
All TPC43AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPC43AHM3_A/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 TPC43AHM3_A/I part is unused and in its original packaging.
Return procedure for TPC43AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC43AHM3_A/I Tags
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Diodes Incorporated
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Diodes Incorporated
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