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Vishay General Semiconductor - Diodes Division TPC43AHM3/87A
- Part No.:
- TPC43AHM3/87A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC43AHM3/87A.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:6,622
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Product details
Overview
TPC43AHM3/87A 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 TPC43AHM3/87A datasheet, TPC43AHM3/87A pinout, TPC43AHM3/87A application, or TPC43AHM3/87A equivalent, key selection criteria include its AEC-Q101 qualification, low-profile 1.1 mm height, MSL Level 1 rating, unidirectional polarity, and suitability for protecting MOSFETs, sensor signal lines, and IC power rails against inductive switching transients.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with optimized junction passivation for stable clamping under repetitive surge stress. Its thermal design supports continuous operation at TJ = 185 °C, enabling use in under-hood automotive environments and high-temperature industrial control modules.
The device delivers fast response time and low incremental surge resistance, ensuring effective suppression of 10/1000 µs waveform transients up to 1500 W. Its unidirectional configuration provides forward conduction capability while maintaining precise reverse standoff and controlled avalanche behavior during overvoltage events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nominal) | 43.0 V - Ensures reliable avalanche initiation above system operating voltage without premature conduction |
| VWM | 36.8 V - Maximum continuous reverse voltage before leakage exceeds 1 µA, compatible with 36 V nominal systems |
| VC @ IPPM | 59.3 V - Clamping voltage at 25.3 A peak pulse current; limits downstream voltage stress during surge |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 µs waveform, suitable for high-energy load dump events |
| TJ max. | +185 °C - Enables deployment in engine control units and powertrain modules without derating |
| Package | SMPC (TO-277A) - Surface-mount, low-profile (1.1 mm typical height), AEC-Q101 qualified, RoHS-compliant |
| MSL Rating | Level 1 - No floor life limitation; supports standard reflow without dry pack or baking requirements |
Pinout & Package
TPC43AHM3/87A uses the SMPC (TO-277A) package - a 3-terminal surface-mount case with cathode band marking on terminal 1 and 2, and anode on terminal 3. Dimensions conform to JEDEC TO-277A: 4.80 × 4.40 × 1.10 mm (L × W × H), with 2.13 mm nominal mounting pad pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-biased terminal | Connected to protected line; conducts during overvoltage to clamp to VC |
| 2 (Cathode) | Parallel cathode path | Shares surge current with Pin 1; reduces thermal resistance and improves power handling |
| 3 (Anode) | Reference/ground connection | Typically tied to system ground or low-impedance return path for effective transient shunting |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47 |
| Junction passivation | Stabilizes VBR over lifetime and prevents parameter drift under humidity and thermal stress |
| Low profile (1.1 mm) | Enables placement in space-constrained modules such as ADAS camera ECUs and battery management sensors |
| MSL Level 1 | Eliminates moisture sensitivity concerns during SMT assembly, reducing process risk and cost |
| Unidirectional architecture | Provides forward conduction path for DC bias circuits while suppressing negative-going transients |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V power rails in junction boxes and body control modules from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: TVS diode placed at input stage to clamp transients before they reach DC-DC converters and microcontrollers. Use Value: Withstands 1500 W surges and operates reliably at +185 °C, meeting OEM requirements for under-hood durability. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA, 0–5 V) of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Unidirectional TVS connected between signal line and ground to suppress ESD and inductive kickback. Use Value: 36.8 V VWM ensures no interference with normal signal range; 59.3 V VC protects ADC inputs from damage. |
| Motor Drive Gate Driver Protection | Telecom DC Power Input Stage |
Use Scenario: Safeguarding high-side and low-side gate drivers in BLDC motor inverters from Miller-induced voltage spikes. IC Role / Device Role / Timing Role: TVS placed across driver supply pins (VDD–GND) to clamp fast-rising transients (<1 ns rise time). Use Value: Fast response and low incremental surge resistance limit overshoot to <60 V, preventing driver latch-up or oxide breakdown. |
Use Scenario: Front-end protection of 48 V telecom rectifier outputs against lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary unidirectional TVS in series with fuse and MOV, absorbing first-line energy before secondary protection. Use Value: 1500 W PPPM rating and 25.3 A IPPM enable robust handling of combination wave (10/700 µs) surges without degradation. |
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-E3/5BT | Same VBR (43 V), but lower PPPM (400 W); SMA package (higher thermal resistance) | Limited to lower-energy transients; unsuitable for automotive load dump or industrial motor drive spikes | Select only for cost-sensitive consumer applications with <500 W surge exposure |
| TPC43AHM3_A | Identical electrical specs and SMPC package; differs only in packaging code (reel size and tape width) | No functional difference; same PCB footprint, thermal performance, and reliability | Preferred for volume production where 7" reel delivery is required |
Compared with SMAJ43A-E3/5BT, TPC43AHM3/87A delivers 275 % higher surge power handling and superior thermal robustness due to its dual-cathode SMPC construction; compared with TPC43AHM3_A, it shares identical protection performance but ships in a different tape-and-reel configuration for logistics flexibility.
Availability
TPC43AHM3/87A is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interfaces, motor drive gate protection, and telecom DC input stages requiring stable component supply, AEC-Q101 compliance, and high-temperature operational integrity.
Supply support for TPC43AHM3/87A 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The TPC43AHM3/87A belongs to Vishay's PAR® family of high-power TVS diodes, engineered specifically for demanding transient suppression in harsh-environment applications where AEC-Q101 qualification and 185 °C operation are mandatory.
FAQ
What is the clamping voltage of the TPC43AHM3/87A at its rated peak pulse current?
The TPC43AHM3/87A has a maximum clamping voltage (VC) of 59.3 V when subjected to its specified peak pulse current of 25.3 A using a 10/1000 µs waveform. This value is measured per Figure 1 in the official Vishay datasheet (Document Number: 89056) and defines the upper voltage limit imposed on protected circuitry during surge events.
Is the TPC43AHM3/87A suitable for automotive under-hood applications?
Yes, the TPC43AHM3/87A is explicitly 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, battery disconnect units, and power distribution modules where ambient temperatures exceed 125 °C.
What does the 'HM3/87A' suffix indicate in TPC43AHM3/87A?
The 'HM3' denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101 qualified base package code for the SMPC (TO-277A) outline; '87A' specifies the tape-and-reel packaging variant - 13" diameter reel with 6500-unit quantity and I-type carrier tape per ordering information in the datasheet.
How many terminals does the TPC43AHM3/87A have, and what is their function?
The TPC43AHM3/87A has three terminals in the SMPC (TO-277A) package: Pins 1 and 2 are cathodes (marked by a band line), providing parallel current paths to reduce thermal stress, and Pin 3 is the anode, intended for grounding or low-impedance return connection during transient clamping.
Does the TPC43AHM3/87A meet moisture sensitivity level (MSL) requirements for standard SMT reflow?
Yes, the TPC43AHM3/87A meets J-STD-020 MSL Level 1, meaning it has unlimited floor life and requires no dry packing or baking prior to solder reflow. This simplifies manufacturing flow and eliminates moisture-related defects such as popcorning during assembly.
TPC43AHM3/87A 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):
- 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)
TPC43AHM3/87A FAQ
1.How can I place an order for TPC43AHM3/87A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC43AHM3/87A 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 TPC43AHM3/87A reliable?
The price and inventory of TPC43AHM3/87A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC43AHM3/87A is usually 5 days.
3.What payment methods are accepted for TPC43AHM3/87A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC43AHM3/87A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC43AHM3/87A?
TPC43AHM3/87A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC43AHM3/87A 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 TPC43AHM3/87A?
For technical support, including TPC43AHM3/87A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC43AHM3/87A requirements.
6.How does Aetrix verify that TPC43AHM3/87A is sourced from the original manufacturer or authorized distributors?
All TPC43AHM3/87A 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 TPC43AHM3/87A meets industry standards.
7.What is the process for return or replacement of TPC43AHM3/87A?
All TPC43AHM3/87A units undergo pre-shipment inspection (PSI). If there is an issue with TPC43AHM3/87A, 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 TPC43AHM3/87A part is unused and in its original packaging.
Return procedure for TPC43AHM3/87A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC43AHM3/87A Tags
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