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Vishay General Semiconductor - Diodes Division TPC43AHM3_A/H
- Part No.:
- TPC43AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC43AHM3_A/H.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:7,773
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Product details
Overview
TPC43AHM3_A/H from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in TO-277A (SMPC) package, featuring 40.9 V minimum breakdown voltage (VBR), 36.8 V stand-off voltage (VWM), and 59.3 V maximum clamping voltage (VC) at 25.3 A peak pulse current. It operates from −65 °C to +185 °C and is AEC-Q101 qualified for automotive-grade surge protection on power rails and signal lines.
For engineers reviewing the TPC43AHM3_A/H datasheet, TPC43AHM3_A/H pinout, TPC43AHM3_A/H application, or TPC43AHM3_A/H equivalent, this device serves as a high-reliability, low-profile TVS for inductive switching transients in automotive ECUs, industrial sensor interfaces, and telecom power supply inputs - with verified MSL Level 1 moisture sensitivity and halogen-free RoHS compliance.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for fast response (<1 ns) and low incremental surge resistance. Its unidirectional configuration enables integration into DC-biased circuits where reverse conduction must be blocked while clamping positive transients.
The TO-277A (SMPC) package supports automated placement with 1.1 mm typical height and meets UL 94 V-0 flammability. Junction temperature rating up to 185 °C ensures stable operation under sustained thermal stress in engine bay or power-conversion environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V - defines precise avalanche onset threshold for repeatable clamping behavior |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 59.3 V at 25.3 A - clamped voltage during 10/1000 μs surge, limiting downstream IC stress |
| PPPM | 1500 W - peak pulse power handling capability per single 10/1000 μs waveform |
| TJ max | +185 °C - enables use in under-hood automotive modules without derating at high ambient |
| Polarity | Unidirectional - blocks reverse current while clamping positive transients only |
| MSL Level | Level 1 per J-STD-020 - no floor life limitation; suitable for standard SMT reflow without baking |
Pinout & Package
TO-277A (SMPC) surface-mount package with 3-terminal configuration: two cathodes (pins 1 and 2) and one anode (pin A). Matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 tin whisker requirements (Class 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Cathode) | Primary cathode connection | Connected to protected line; forms main current path during clamping |
| Pin 2 (Cathode) | Secondary cathode connection | Parallel cathode terminal for lower inductance layout and enhanced current sharing |
| Pin A (Anode) | Anode connection | Typically tied to ground or low-impedance return path; completes clamping circuit |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier structure improves long-term reliability under repeated surge stress |
| Low profile (1.1 mm) | Enables compact PCB layouts in space-constrained automotive and telecom modules |
| AEC-Q101 qualification | Validated for automotive-grade production use including temperature cycling and HTRB testing |
| Halogen-free & RoHS | HM3 suffix confirms compliance with environmental regulations and material categorization per Doc. 99912 |
| Fast response time | Sub-nanosecond turn-on ensures protection of sensitive MOSFET gates and microcontroller I/O pins |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump and inductive kickback transients on 12 V power rails in engine control modules. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between battery input and DC-DC converter input stage. Use Value: Limits voltage excursion to ≤59.3 V during 25.3 A surges, preventing damage to downstream PMICs and MCU power domains. |
Use Scenario: Protecting analog front-end inputs of 4–20 mA current-loop sensors exposed to field wiring transients. IC Role / Device Role / Timing Role: Unidirectional shunt protector on signal line referenced to local ground. Use Value: Clamps induced spikes within 1 ns while maintaining <1 μA leakage at 36.8 V, preserving measurement accuracy. |
| Telecom Power Supply Input | Consumer Appliance Motor Drive |
Use Scenario: Guarding AC/DC adapter primary-side DC bus against lightning-induced surges in outdoor base stations. IC Role / Device Role / Timing Role: High-energy TVS across bulk capacitor terminals to absorb line-to-ground transients. Use Value: Handles 1500 W peak pulses without degradation, supporting EN 61000-4-5 Level 4 compliance. |
Use Scenario: Safeguarding gate drivers and bootstrap circuits in BLDC motor inverters subject to back-EMF spikes. IC Role / Device Role / Timing Role: Localized clamp adjacent to half-bridge MOSFETs to limit VDS overshoot. Use Value: Low clamping voltage (59.3 V) prevents unintended MOSFET avalanche, extending switching device lifetime. |
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 (Vishay) | Same VBR range (40.9–45.2 V) but lower PPPM = 400 W; DO-214AC package; higher VC = 69.4 V at 5.8 A | Lower energy handling limits use to sub-100 W surge environments; less suitable for automotive load-dump | Select when board space allows larger footprint and surge energy is below 400 W |
| TPC43AHE3_A/H (Vishay) | Identical electrical specs; differs only in packaging - HM3_A/H uses 7" tape/reel (1500 pcs), HE3_A/H uses 13" tape/reel (6500 pcs) | No functional difference; same thermal, electrical, and mechanical performance | Choose based on procurement volume and SMT line reel size compatibility |
Compared with SMAJ43A-E3/57T, TPC43AHM3_A/H delivers 3.75× higher surge power handling and tighter clamping, making it preferable for AEC-Q101-critical systems; versus TPC43AHE3_A/H, it offers identical protection performance in a different logistics format.
Availability
TPC43AHM3_A/H is available at Aetrix Electronics and suitable for automotive ECU designs, industrial sensor interface protection, and telecom power supply inputs requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for TPC43AHM3_A/H 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 optoelectronics for automotive, industrial, and computing markets.
The TPC43AHM3_A/H belongs to Vishay's eSMP® PAR® TVS family, engineered specifically for high-energy transient suppression in harsh-environment applications where AEC-Q101 qualification, 185 °C operation, and ultra-low profile are mandatory.
FAQ
What is the maximum clamping voltage of the TPC43AHM3_A/H at its rated peak pulse current?
The TPC43AHM3_A/H has a maximum clamping voltage (VC) of 59.3 V when subjected to its rated peak pulse current of 25.3 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream components. The TPC43AHM3_A/H maintains this clamping performance across its full operating temperature range up to +185 °C junction temperature.
Is the TPC43AHM3_A/H suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the TPC43AHM3_A/H is fully AEC-Q101 qualified and explicitly listed as automotive grade in Vishay's documentation. It undergoes rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and humidity testing to ensure reliability in engine bay and chassis-mounted modules. The TPC43AHM3_A/H also meets JESD201 Class 2 whisker resistance and MSL Level 1 requirements for automotive SMT assembly.
What does the "HM3_A/H" suffix indicate in the TPC43AHM3_A/H part number?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 tin whisker resistance. The "_A/H" indicates packaging: 7-inch diameter plastic tape and reel, with 1500 units per reel. This format is optimized for high-speed pick-and-place equipment and aligns with IPC-7351B land pattern recommendations for TO-277A (SMPC) devices.
How does the dual-cathode configuration of the TPC43AHM3_A/H improve surge performance?
The dual-cathode (pins 1 and 2) design of the TPC43AHM3_A/H reduces effective series inductance by enabling symmetrical current splitting during transient events. This lowers overall clamping impedance and improves response consistency under high di/dt conditions. In practice, this configuration allows the TPC43AHM3_A/H to maintain specified VC and IPPM ratings even in layouts with minimal copper area, unlike single-cathode alternatives.
Can the TPC43AHM3_A/H replace older TO-220 or DO-15 TVS diodes in existing designs?
No direct replacement is implied - the TPC43AHM3_A/H uses TO-277A (SMPC), a surface-mount 3-terminal package incompatible with through-hole TO-220 or axial DO-15 footprints. Layout redesign is required to accommodate its 3.70 mm × 4.80 mm outline and dual-cathode pad geometry. However, its superior 1500 W rating and 1.1 mm height make it a targeted upgrade for new automotive and industrial PCBs where space and surge margin are critical.
TPC43AHM3_A/H 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/H FAQ
1.How can I place an order for TPC43AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC43AHM3_A/H 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/H reliable?
The price and inventory of TPC43AHM3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for TPC43AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC43AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC43AHM3_A/H?
TPC43AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC43AHM3_A/H 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/H?
For technical support, including TPC43AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC43AHM3_A/H requirements.
6.How does Aetrix verify that TPC43AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TPC43AHM3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of TPC43AHM3_A/H?
All TPC43AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPC43AHM3_A/H, 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/H part is unused and in its original packaging.
Return procedure for TPC43AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC43AHM3_A/H Tags
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