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Vishay General Semiconductor - Diodes Division TPSMC43AHE3/57T
- Part No.:
- TPSMC43AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC43AHE3/57T.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,778
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Product details
Overview
TPSMC43AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on power and signal lines. It features 43 V breakdown voltage (VBR = 40.9–45.2 V at 1 mA), 36.8 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 μs), 25.3 V clamping voltage at 20 A peak pulse current (IPPM), and operates up to +185 °C junction temperature.
For engineers reviewing the TPSMC43AHE3/57T datasheet, TPSMC43AHE3/57T pinout, TPSMC43AHE3/57T application, or TPSMC43AHE3/57T equivalent, this device is selected for automotive-grade overvoltage protection where AEC-Q101 qualification, high-temperature stability, low clamping ratio, and robust 200 A IFSM surge capability are critical design requirements.
Technical Context
The TPSMC43AHE3/57T employs passivated anisotropic rectifier technology optimized for stable breakdown behavior under repetitive surge stress. Its unidirectional polarity and cathode-band marking align with standard TVS placement on DC supply rails and I/O lines requiring reverse-polarity blocking.
It delivers 25.3 V clamping at 20 A (10/1000 μs), achieving a clamping ratio of ~1.17×VWM, and maintains full 1500 W pulse power rating only when mounted on 8.0 mm × 8.0 mm copper pads per terminal - a thermal layout requirement directly tied to its 185 °C TJ max rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 V / 43.0 V / 45.2 V at 1 mA - defines precise voltage threshold for avalanche conduction onset |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 25.3 V at 20 A (10/1000 μs) - actual clamped voltage seen by protected circuit during surge |
| PPPM | 1500 W - peak transient energy absorption capacity under standardized waveform |
| IFSM | 200 A - maximum non-repetitive forward surge current (8.3 ms half-sine) |
| TJ max | +185 °C - enables operation in under-hood automotive and industrial environments without derating |
| Polarity | Unidirectional - blocks reverse voltage only; requires correct orientation relative to protected line polarity |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, MSL Level 1 (260 °C reflow), RoHS-compliant and AEC-Q101 qualified. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-impedance return plane; must handle 200 A surge current path |
| Cathode | Protected line connection | Connected to line being protected (e.g., 24 V rail, CAN H); clamps to Anode when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements - supports PPAP and long-term reliability in vehicle systems |
| 185 °C junction temperature rating | Enables use in high-ambient environments (e.g., engine control units, ADAS ECUs) without thermal derating penalties |
| 1500 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 Level 4 surges when properly laid out |
| Low clamping ratio (VC/VWM ≈ 0.69) | Minimizes overvoltage exposure to downstream ICs - critical for protecting 3.3 V/5 V logic and MOSFET gate drivers |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard 260 °C Pb-free reflow without baking - simplifies SMT manufacturing |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in body control modules against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and chassis ground to clamp transients above 36.8 V. Use Value: Limits voltage to ≤25.3 V during 20 A surge, preventing damage to PMICs and microcontrollers rated for 36 V absolute max. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) in factory automation sensors exposed to ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS connected across signal and return, leveraging fast response (<1 ns) to suppress sub-microsecond ESD pulses. Use Value: Maintains signal integrity with <1 μA leakage at 36.8 V, avoiding offset errors in precision current-loop receivers. |
| Telecom DC Power Input Protection | Computer Peripheral USB VBUS Protection |
Use Scenario: Securing -48 V DC input in telecom base station power supplies against lightning-induced surges on outdoor feeder lines. IC Role / Device Role / Timing Role: Unidirectional TVS installed on negative rail, referenced to system ground, with cathode to -48 V line. Use Value: Withstands 1500 W pulses while maintaining 185 °C operation - compatible with sealed, convection-cooled enclosures. |
Use Scenario: Adding secondary overvoltage protection on USB 2.0/3.0 VBUS lines in docking stations after primary protection stages. IC Role / Device Role / Timing Role: TVS placed between VBUS and GND to clamp fast transients from hot-plug or cable coupling. Use Value: Clamps to 25.3 V within nanoseconds, preventing latch-up in USB controllers rated for 5.5 V max. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A | Same VBR range (40.9–45.2 V), but lower PPPM = 400 W and IFSM = 40 A; SMA package (smaller thermal mass) | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); unsuitable for ISO 7637-2 Pulse 5a load dump | Select SMAJ43A only for space-constrained consumer applications where surge energy is below 100 mJ. |
| TPSMC43AHM3/57T | Identical electrical specs and SMC package; differs only in halogen-free molding compound (HM3 suffix vs HE3) | No functional difference; HM3 required for specific environmental compliance mandates (e.g., certain EU industrial tenders) | Choose TPSMC43AHM3/57T when halogen-free material declaration is contractually required; otherwise HE3 is fully interchangeable. |
Compared with SMAJ43A and TPSMC43AHM3/57T, the TPSMC43AHE3/57T provides superior surge handling (1500 W vs 400 W) and automotive-grade thermal margin (185 °C), while sharing identical clamping performance and footprint with its HM3 variant - making it the default choice for high-reliability 24 V/48 V systems.
Availability
TPSMC43AHE3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom power supplies, and computer peripheral designs requiring stable component supply with AEC-Q101 qualification and high-temperature resilience.
Supply support for TPSMC43AHE3/57T 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 qualification.
The TPSMC series belongs to Vishay's PAR® (Protective Avalanche Rectifier) family, engineered specifically for high-energy transient suppression in harsh-environment applications including automotive power distribution, industrial automation, and infrastructure equipment.
FAQ
What is the clamping voltage of the TPSMC43AHE3/57T at its rated peak pulse current?
The TPSMC43AHE3/57T has a maximum clamping voltage (VC) of 25.3 V when subjected to its specified peak pulse current of 20 A under the 10/1000 μs waveform. This value is measured per JEDEC standards and reflects the actual voltage imposed on the protected circuit during surge events - a key parameter for ensuring downstream components remain within their absolute maximum ratings. The TPSMC43AHE3/57T achieves this with a low clamping ratio of approximately 0.69 relative to its 36.8 V stand-off voltage.
Is the TPSMC43AHE3/57T qualified for automotive applications?
Yes, the TPSMC43AHE3/57T is AEC-Q101 qualified, as confirmed by Vishay's official documentation and ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101 qualified variants. This qualification covers stress tests including high-temperature operating life, temperature cycling, and surge robustness - making the TPSMC43AHE3/57T suitable for use in engine control units, body electronics, and ADAS modules where reliability under thermal and electrical stress is mandatory.
What is the package type and mounting requirement for the TPSMC43AHE3/57T?
The TPSMC43AHE3/57T uses the SMC (DO-214AB) surface-mount package with matte tin-plated leads. For full 1500 W pulse power rating, it must be mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads at each terminal to ensure adequate thermal dissipation. The device is MSL Level 1 compliant, supporting standard 260 °C Pb-free reflow without pre-baking. Polarity is marked by a cathode band, and orientation must follow unidirectional TVS placement conventions.
How does the TPSMC43AHE3/57T compare to the SMAJ43A in surge handling capability?
The TPSMC43AHE3/57T delivers 1500 W peak pulse power (10/1000 μs), more than triple the 400 W rating of the SMAJ43A. It also supports 200 A IFSM versus 40 A for the SMAJ43A, enabling robust protection against high-energy transients like ISO 7637-2 Pulse 5a load dump. While both share similar VBR and VC values, the TPSMC43AHE3/57T's larger SMC package and higher thermal mass make it suitable for demanding automotive and industrial applications where the SMAJ43A would fail catastrophically.
Does the TPSMC43AHE3/57T have a specified junction temperature coefficient for breakdown voltage?
Yes, the TPSMC43AHE3/57T has a typical temperature coefficient of breakdown voltage (αT) of 0.092 %/°C, as published in Vishay's Electrical Characteristics table. This allows engineers to calculate VBR at elevated temperatures using the formula: VBR at TJ = VBR at 25 °C × [1 + αT × (TJ − 25)]. This coefficient is essential for validating clamping performance across the full −65 °C to +185 °C operating range, especially in under-hood automotive deployments.
TPSMC43AHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- 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:
- DO-214AB (SMCJ)
TPSMC43AHE3/57T FAQ
1.How can I place an order for TPSMC43AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC43AHE3/57T 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 TPSMC43AHE3/57T reliable?
The price and inventory of TPSMC43AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC43AHE3/57T is usually 5 days.
3.What payment methods are accepted for TPSMC43AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC43AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC43AHE3/57T?
TPSMC43AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC43AHE3/57T 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 TPSMC43AHE3/57T?
For technical support, including TPSMC43AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC43AHE3/57T requirements.
6.How does Aetrix verify that TPSMC43AHE3/57T is sourced from the original manufacturer or authorized distributors?
All TPSMC43AHE3/57T 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 TPSMC43AHE3/57T meets industry standards.
7.What is the process for return or replacement of TPSMC43AHE3/57T?
All TPSMC43AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC43AHE3/57T, 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 TPSMC43AHE3/57T part is unused and in its original packaging.
Return procedure for TPSMC43AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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