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Vishay General Semiconductor - Diodes Division TPSMB43A-1BHE3/5BT
- Part No.:
- TPSMB43A-1BHE3/5BT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB43A-1BHE3/5BT.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,982
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Product details
Overview
TPSMB43A-1BHE3/5BT from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor diode designed for clamping inductive switching transients and lightning-induced surges on power rails and signal lines. It features a 43 V breakdown voltage (VBR), 36.8 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), 10.1 A peak pulse current (IPPM), and operates up to +185 °C junction temperature - suitable for automotive power rail protection in engine control units and body electronics.
For engineers reviewing the TPSMB43A-1BHE3/5BT datasheet, TPSMB43A-1BHE3/5BT pinout, TPSMB43A-1BHE3/5BT application, or TPSMB43A-1BHE3/5BT equivalent, this page delivers verified electrical parameters, SMB (DO-214AA) package dimensions, cathode/anode terminal roles, AEC-Q101 qualification status, and real-world surge protection use cases aligned with IEC 61000-4-5 and ISO 7637-2 requirements.
Technical Context
This unidirectional TVS diode uses passivated anisotropic rectifier technology to achieve low incremental surge resistance and excellent clamping performance under repetitive 10/1000 µs transients at 0.01% duty cycle. Its 185 °C maximum junction temperature enables operation in high-temperature automotive under-hood environments without derating loss.
The device exhibits a typical VBR temperature coefficient of +0.092 %/°C and clamps to 59.3 V at 10.1 A, delivering stable overvoltage protection across -65 °C to +185 °C operating range while meeting MSL Level 1 reflow compatibility (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 / 43.0 / 45.2 V - ensures reliable conduction onset above 36.8 V system stand-off voltage |
| VWM | 36.8 V - maximum continuous reverse voltage before leakage exceeds 1 μA at 25 °C |
| PPPM | 600 W - peak transient energy absorption capability per 10/1000 µs waveform |
| IPPM | 10.1 A - maximum non-repetitive surge current it can clamp without failure |
| TJ max. | +185 °C - supports placement near high-power components in automotive ECUs |
| Clamping Voltage VC | 59.3 V at IPPM - limits downstream IC voltage stress during surge events |
| Polarity | Unidirectional - protects against positive transients only; cathode marked by band |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); thermal pad layout requires 5.0 mm × 5.0 mm copper area per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VLINE > VBR |
| Anode | Reference node | Typically tied to system ground or low-impedance return path for clamping loop integrity |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a transients in 12 V automotive systems |
| 185 °C junction rating | Eliminates thermal derating in under-hood applications up to +125 °C ambient |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on downstream MOSFETs or microcontrollers during clamping |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without moisture sensitivity concerns |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed circuits in engine control modules from load dump and alternator transients. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between power rail and ground to clamp spikes exceeding 36.8 V. Use Value: Limits voltage to ≤59.3 V during 10.1 A surges, preventing damage to MCU power supplies and CAN transceivers. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLCs from ESD and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional TVS shunting fast transients (<1 ns rise time) on low-current signal paths. Use Value: Maintains signal integrity with <1 μA leakage at 36.8 V, enabling accurate sub-mV-level measurements. |
| Telecom DC Power Input Protection | Consumer Power Adapter Output Clamping |
Use Scenario: Securing 48 V DC input stages of base station power supplies against lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk DC input before DC/DC converter stage. Use Value: Absorbs 600 W pulses without degradation, preserving upstream fuse coordination and system uptime. |
Use Scenario: Adding secondary surge suppression on 5–24 V output rails of wall-mounted AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Final-stage TVS protecting USB-C PD controllers and PMICs from hot-plug transients. Use Value: Delivers 59.3 V clamping at 10.1 A with <0.5 ns response, meeting UL 62368-1 transient immunity requirements. |
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 | Same VBR (40.9–45.2 V), lower PPPM = 400 W, SMA package (smaller thermal mass) | Limited to lower-energy transients; not rated for AEC-Q101 or 185 °C operation | Select when cost or board space is critical and surge energy remains below 400 W |
| SMCJ43A | Same VBR, higher PPPM = 1500 W, SMC package (larger footprint, better thermal dissipation) | Overqualified for 600 W needs; requires larger PCB area and may increase layout inductance | Choose when future-proofing for higher-energy threats or extended lifetime under repeated surges |
Compared with SMAJ43A and SMCJ43A, the TPSMB43A-1BHE3/5BT uniquely balances 600 W capability, AEC-Q101 qualification, 185 °C operation, and SMB footprint - making it optimal for space-constrained automotive and industrial designs requiring validated reliability without over-engineering.
Availability
TPSMB43A-1BHE3/5BT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power inputs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TPSMB43A-1BHE3/5BT 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 demanding industrial and automotive applications.
The TPSMB43A-1BHE3/5BT belongs to Vishay's PAR® TVS family, engineered specifically for high-temperature, high-surge automotive and industrial environments where AEC-Q101 compliance and 185 °C operation are mandatory.
FAQ
What is the maximum clamping voltage of the TPSMB43A-1BHE3/5BT at its rated peak pulse current?
The TPSMB43A-1BHE3/5BT clamps to a maximum of 59.3 V when subjected to its specified 10.1 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value is measured per JEDEC standards and guarantees predictable overvoltage limiting for downstream circuitry. The clamping voltage is confirmed in the Electrical Characteristics table on page 2 of Vishay document 88406 and applies directly to the TPSMB43A-1BHE3/5BT.
Is the TPSMB43A-1BHE3/5BT qualified for automotive applications?
Yes, the TPSMB43A-1BHE3/5BT carries the HE3 suffix, indicating full AEC-Q101 qualification per Vishay's documentation. It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD22-A114. Its 185 °C maximum junction temperature and MSL Level 1 rating further validate suitability for under-hood automotive use - all confirmed in the "Features" and "Ordering Information" sections of the TPSMB43A datasheet.
What does the "-1BHE3/5BT" suffix indicate in the TPSMB43A-1BHE3/5BT part number?
The "-1BHE3/5BT" suffix specifies packaging and compliance: "1B" denotes revision B of the device marking code (LZP), "HE3" confirms RoHS-compliant, AEC-Q101-qualified construction, and "5BT" indicates 7" tape-and-reel packaging with 750 units per reel. This full ordering code aligns with Vishay's preferred package code "H" and delivery mode "7″ diameter plastic tape and reel" as defined in the Ordering Information table on page 3 of document 88406.
Can the TPSMB43A-1BHE3/5BT be used in bidirectional configurations?
No, the TPSMB43A-1BHE3/5BT is unidirectional only, as explicitly stated in the Features section of the datasheet. It protects against positive transients on the cathode side relative to anode. For bidirectional protection, two devices must be connected in series opposing configuration, or a dedicated bidirectional TVS such as the TPSMB43CA should be selected - the latter is a separate part with distinct marking and electrical behavior.
What is the thermal resistance junction-to-ambient (RθJA) for the TPSMB43A-1BHE3/5BT in standard mounting conditions?
Vishay does not publish a fixed RθJA value for the TPSMB43A-1BHE3/5BT because it is highly dependent on PCB layout. The datasheet specifies thermal performance under defined conditions: mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads at each terminal. Under those conditions, the device sustains full 600 W pulse power without exceeding 185 °C junction temperature - meaning effective thermal design relies on adhering to this pad layout, not a generic RθJA number.
TPSMB43A-1BHE3/5BT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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):
- 10.1A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
TPSMB43A-1BHE3/5BT FAQ
1.How can I place an order for TPSMB43A-1BHE3/5BT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB43A-1BHE3/5BT 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 TPSMB43A-1BHE3/5BT reliable?
The price and inventory of TPSMB43A-1BHE3/5BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB43A-1BHE3/5BT is usually 5 days.
3.What payment methods are accepted for TPSMB43A-1BHE3/5BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB43A-1BHE3/5BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB43A-1BHE3/5BT?
TPSMB43A-1BHE3/5BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB43A-1BHE3/5BT 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 TPSMB43A-1BHE3/5BT?
For technical support, including TPSMB43A-1BHE3/5BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB43A-1BHE3/5BT requirements.
6.How does Aetrix verify that TPSMB43A-1BHE3/5BT is sourced from the original manufacturer or authorized distributors?
All TPSMB43A-1BHE3/5BT 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 TPSMB43A-1BHE3/5BT meets industry standards.
7.What is the process for return or replacement of TPSMB43A-1BHE3/5BT?
All TPSMB43A-1BHE3/5BT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB43A-1BHE3/5BT, 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 TPSMB43A-1BHE3/5BT part is unused and in its original packaging.
Return procedure for TPSMB43A-1BHE3/5BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB43A-1BHE3/5BT Tags
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