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Vishay General Semiconductor - Diodes Division TPSMC43AHE3_B/H
- Part No.:
- TPSMC43AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC43AHE3_B/H.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,164
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Product details
Overview
TPSMC43AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-reliability overvoltage protection of sensitive electronics. It features a 43.0 V nominal breakdown voltage (VBR), 36.8 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 µs), 25.3 V clamping voltage at 20 A IPPM, and 185 °C maximum junction temperature - deployed in automotive power rails and industrial sensor signal lines.
For engineers reviewing the TPSMC43AHE3_B/H datasheet, TPSMC43AHE3_B/H pinout, TPSMC43AHE3_B/H application, or TPSMC43AHE3_B/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 1.0 µA max reverse leakage at VWM, MSL Level 1 rating, and compatibility with 260 °C lead-free reflow profiles.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping performance across -65 °C to +185 °C operating range. Its 10/1000 µs waveform response enables robust suppression of inductive switching transients and ESD events without degradation under thermal stress.
The device operates exclusively in unidirectional mode with cathode-band polarity marking, and its SMC package supports 200 A non-repetitive forward surge current (IFSM) while maintaining low incremental surge resistance and fast response time - critical for protecting MOSFET gates and microcontroller I/O pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 / 43.0 / 45.2 V - ensures reliable conduction onset above system operating voltage with ±5% tolerance |
| VWM | 36.8 V - maximum continuous reverse voltage before leakage exceeds 1.0 µA, matching 3.3 V–24 V rail protection needs |
| VC @ IPPM | 59.3 V - clamps transient spikes to safe levels for downstream ICs during 20 A surge events |
| PPPM | 1500 W - handles high-energy transients from inductive loads or lightning surges per IEC 61000-4-5 |
| TJ max. | +185 °C - supports under-hood automotive and high-temperature industrial environments without derating |
| MSL Level | Level 1 (260 °C peak) - allows standard lead-free reflow without moisture sensitivity concerns |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMC (DO-214AB), molded case with matte tin-plated leads, UL 94 V-0 flammability rating, 0.320" × 0.246" footprint (8.13 mm × 6.22 mm), cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-side return path; enables unidirectional clamping to GND |
| Cathode | Current exit point during forward conduction; marked with band | Connected to protected line (e.g., CAN_H, 12 V rail); defines clamping direction and polarity |
Key Features
| Feature | Design Value |
|---|---|
| Passivated anisotropic rectifier technology | Enables stable VBR drift < ±0.092 %/°C and consistent clamping across temperature extremes |
| 1500 W peak pulse power (10/1000 µs) | Provides immunity against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (< 1 ns rise time), improving protection margin |
| AEC-Q101 qualification (HE3 suffix) | Confirms compliance with automotive stress tests including HTGB, H3TRB, and mechanical shock |
| MSL Level 1, 260 °C peak reflow | Eliminates pre-bake requirement and supports automated SMT assembly in high-volume production |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges above 36.8 V. Use Value: Withstands 1500 W pulses and operates up to +185 °C, meeting ISO 16750-2 requirements without derating. | Use Scenario: Shielding analog outputs (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Standoff-mode protector on signal line to suppress ESD and switching noise coupled from adjacent motor drives. Use Value: 1.0 µA leakage at 36.8 V preserves signal integrity; 59.3 V clamping prevents ADC saturation or op-amp damage. |
| Telecom Interface Port Protection | Computer Peripheral USB/VBUS Line Protection |
Use Scenario: Safeguarding RS-485 transceivers and PoE-powered Ethernet ports against lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on differential pair or DC feed line to limit common-mode transients before secondary protection. Use Value: 25.3 V clamping at 20 A ensures transceiver survival under IEC 61000-4-5 4 kV/2 Ω test conditions. | Use Scenario: Overvoltage guard on USB Type-C VBUS lines exposed to hot-plug and adapter fault conditions. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to system ground, absorbing 1500 W surges from faulty chargers or cable shorts. Use Value: AEC-Q101 qualification and 260 °C reflow compatibility support high-reliability consumer device manufacturing. |
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), lower PPPM = 400 W, SMA package (smaller footprint, lower thermal mass) | Limited to lower-energy transients; not AEC-Q101 qualified; unsuitable for under-hood use | Select when board space is constrained and surge energy ≤ 400 W; verify thermal derating in enclosed enclosures |
| TPSMC43AHM3_B/H | Identical electrical specs; halogen-free molding compound; same AEC-Q101 qualification and SMC package | No functional difference; used where RoHS + halogen-free compliance is mandated (e.g., EU automotive Tier 1) | Drop-in replacement if halogen-free material is required; identical layout, thermal, and electrical behavior |
Compared with SMAJ43A-E3/5BT, TPSMC43AHE3_B/H delivers 3.75× higher surge power handling and automotive qualification; versus TPSMC43AHM3_B/H, it shares full electrical and mechanical equivalence but differs only in halogen content - making HE3 ideal for cost-sensitive AEC-Q101 designs without halogen restrictions.
Availability
TPSMC43AHE3_B/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface design, and telecom port hardening requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant sourcing.
Supply support for TPSMC43AHE3_B/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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, thermal performance, and automotive-grade validation.
The TPSMC series was developed specifically for high-energy transient suppression in harsh-environment applications - targeting automotive subsystems, industrial controls, and infrastructure equipment where 1500 W surge capability and 185 °C operation are mandatory.
FAQ
What is the clamping voltage of the TPSMC43AHE3_B/H at its rated peak pulse current?
The TPSMC43AHE3_B/H has a maximum clamping voltage (VC) of 59.3 V at 20 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per JEDEC standards and ensures downstream components remain within safe operating limits during surge events. The TPSMC43AHE3_B/H maintains this clamping performance across its full temperature range and after repeated stress cycles, as verified in AEC-Q101 qualification testing.
Is the TPSMC43AHE3_B/H suitable for automotive applications?
Yes, the TPSMC43AHE3_B/H is AEC-Q101 qualified and explicitly designed for automotive use, with operating junction temperature up to +185 °C and validation across temperature cycling, high-temperature reverse bias, and mechanical shock tests. Its HE3 suffix denotes RoHS-compliant, AEC-Q101-qualified construction, and the device is commonly deployed in engine control units, body electronics, and ADAS power supplies - all documented in Vishay's automotive application notes for the TPSMC series.
What does the "HE3" suffix mean in TPSMC43AHE3_B/H?
The "HE3" suffix in TPSMC43AHE3_B/H indicates RoHS-compliant construction with matte tin-plated leads, JESD201 Class 2 whisker resistance, and full AEC-Q101 qualification. It also specifies that the device is supplied in 7" plastic tape-and-reel packaging (code H) with 850 units per reel. The "B/H" denotes revision level B and packaging variant H - both confirmed in Vishay's official ordering information table for the TPSMC43AHE3_B/H.
How does the TPSMC43AHE3_B/H compare to bidirectional TVS diodes?
The TPSMC43AHE3_B/H is unidirectional only, meaning it protects against positive transients relative to ground and conducts in forward bias like a rectifier. Unlike bidirectional variants, it cannot suppress negative-going surges on floating lines. Its advantage lies in lower leakage (1.0 µA at VWM) and tighter VBR tolerance - making it preferred for DC power rail and single-ended signal protection where polarity is fixed, such as in automotive 12 V systems or industrial 24 V sensors.
What is the thermal resistance (RθJA) of the TPSMC43AHE3_B/H in standard PCB layout?
Vishay does not publish a specific RθJA value for the TPSMC43AHE3_B/H in the datasheet; however, thermal performance is characterized using standardized 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads at each terminal, per JEDEC JESD51-2. Under those conditions, the device sustains 1500 W pulses without exceeding TJ = 185 °C. For precise RθJA estimation in custom layouts, thermal simulation using the SMC (DO-214AB) 3D model - available from Vishay - is recommended alongside IR thermography validation for the TPSMC43AHE3_B/H.
TPSMC43AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- 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:
- DO-214AB (SMC)
TPSMC43AHE3_B/H FAQ
1.How can I place an order for TPSMC43AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC43AHE3_B/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 TPSMC43AHE3_B/H reliable?
The price and inventory of TPSMC43AHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC43AHE3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMC43AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC43AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC43AHE3_B/H?
TPSMC43AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC43AHE3_B/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 TPSMC43AHE3_B/H?
For technical support, including TPSMC43AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC43AHE3_B/H requirements.
6.How does Aetrix verify that TPSMC43AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMC43AHE3_B/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 TPSMC43AHE3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMC43AHE3_B/H?
All TPSMC43AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC43AHE3_B/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 TPSMC43AHE3_B/H part is unused and in its original packaging.
Return procedure for TPSMC43AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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