My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMB43HE3/5BT
;;2.jpg)
- Part No.:
- TPSMB43HE3/5BT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB43HE3/5BT.pdf
- Description:
- TVS DIODE 34.8VWM 61.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,968
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMB43HE3/5BT from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive and lightning-induced transients 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 59.3 V maximum clamping voltage (VC) - deployed in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB43HE3/5BT datasheet, TPSMB43HE3/5BT pinout, TPSMB43HE3/5BT application, or TPSMB43HE3/5BT equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification, 185 °C junction temperature rating, and verified clamping performance under 10/1000 µs surge conditions.
Technical Context
The TPSMB43HE3/5BT operates as a silicon avalanche diode with passivated anisotropic rectifier technology, delivering precise voltage clamping during transient events. Its 43 V nominal breakdown voltage is specified at 1 mA test current, with ±5% tolerance (40.9–45.2 V), and exhibits a +0.092 %/°C temperature coefficient for VBR.
It supports high-reliability operation up to TJ = 185 °C, meets MSL Level 1 per J-STD-020 (260 °C reflow peak), and is qualified to AEC-Q101 for automotive use. The device has low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD and switching transients without affecting normal circuit operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 40.9 V min / 43.0 V nom / 45.2 V max at 1 mA - defines precise clamping onset threshold |
| Stand-off Voltage VWM | 36.8 V - maximum continuous reverse voltage before leakage exceeds 1 µA |
| Peak Pulse Power PPPM | 600 W (10/1000 µs waveform) - sustains single high-energy surges without failure |
| Clamping Voltage VC | 59.3 V at 10.1 A IPPM - limits downstream voltage stress during worst-case transients |
| Peak Pulse Current IPPM | 10.1 A (10/1000 µs) - quantifies maximum surge current the device can divert |
| Junction Temperature Range | −65 °C to +185 °C - enables deployment in under-hood automotive and industrial environments |
| Polarity | Unidirectional - protects against positive transients only; cathode marked with band |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, UL 94 V-0 molding compound. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VWM exceeded |
| Anode | Reference/return path | Typically tied to system ground or lower-potential rail; completes clamping path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| 185 °C maximum junction temperature | Enables use in high-ambient environments such as engine control units and power converters |
| 600 W peak pulse power (10/1000 µs) | Provides robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surge events |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on downstream ICs while maintaining margin above VWM |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking; compatible with automated assembly |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power input and ground to clamp surges above 36.8 V. Use Value: Limits peak voltage to ≤59.3 V at 10.1 A, preventing damage to MCU power supplies and CAN transceivers. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS on signal line to ground, leveraging fast <1 ns response to suppress sub-microsecond transients. Use Value: Maintains signal integrity with minimal loading due to unidirectional architecture and low leakage (<1 µA at VWM). |
| Telecom DC Power Input | Consumer Device USB Port Protection |
Use Scenario: Guarding 48 V PoE-powered equipment inputs against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping device on DC input rail, coordinated with upstream fuses and secondary filtering. Use Value: Withstands 600 W pulses and 75 A non-repetitive forward surge, ensuring survivability in harsh field deployments. | Use Scenario: Adding transient immunity to USB VBUS lines in portable electronics subject to hot-plug and ESD. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between VBUS and chassis ground to absorb ±8 kV contact ESD per IEC 61000-4-2. Use Value: Clamps to 59.3 V before downstream USB controller reaches absolute maximum ratings, preserving port functionality. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | Same SMB package, identical VBR (40.9–45.2 V), but rated for 600 W with 10/1000 µs waveform and not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial designs without AEC requirements | Select SMBJ43A when AEC-Q101 is not required and cost optimization is prioritized |
| SMCJ43A | Higher power rating (1500 W), larger SMC (DO-214AB) package, same VBR range, AEC-Q101 available in HE3 variant | Requires PCB layout change due to larger footprint; used where higher surge margin is mandated | Choose SMCJ43A only if 600 W is insufficient and board space allows SMC package |
Compared with SMBJ43A and SMCJ43A, the TPSMB43HE3/5BT uniquely combines AEC-Q101 qualification, SMB footprint, and 600 W capability - making it optimal for space-constrained automotive modules requiring validated reliability without layout revision.
Availability
TPSMB43HE3/5BT is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, telecom DC inputs, and consumer USB protection requiring stable component supply across production lifecycles.
Supply support for TPSMB43HE3/5BT 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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability and automotive-grade solutions.
The TPSMB series belongs to Vishay's PAR® transient voltage suppressor family, engineered specifically for robust, high-temperature-stable clamping in automotive and industrial power systems where long-term reliability under thermal stress is critical.
FAQ
What is the breakdown voltage tolerance of the TPSMB43HE3/5BT?
The TPSMB43HE3/5BT has a breakdown voltage (VBR) specification of 40.9 V minimum to 45.2 V maximum at 1 mA test current, representing a ±5% tolerance around the nominal 43 V value. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable design margining in safety-critical applications like automotive ECUs where predictable overvoltage response is essential. The TPSMB43HE3/5BT maintains this specification across its full operating temperature range.
Is the TPSMB43HE3/5BT suitable for bidirectional transient protection?
No, the TPSMB43HE3/5BT is a unidirectional TVS diode and provides protection only against positive transients relative to ground. It must be connected with the cathode to the protected line and anode to ground. For bidirectional protection - such as AC lines or data buses requiring suppression of both polarities - a separate bidirectional device like the TPSMB43CA or SMBJ43CA would be required. The TPSMB43HE3/5BT's unidirectional architecture optimizes leakage and clamping performance for DC rail applications.
Does the TPSMB43HE3/5BT meet automotive qualification standards?
Yes, the TPSMB43HE3/5BT is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101 qualified construction. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, validating its suitability for automotive powertrain, body electronics, and ADAS modules. The TPSMB43HE3/5BT also supports operation up to 185 °C junction temperature, exceeding typical automotive under-hood requirements.
What is the maximum clamping voltage of the TPSMB43HE3/5BT at rated surge current?
The TPSMB43HE3/5BT has a maximum clamping voltage (VC) of 59.3 V at its rated peak pulse current (IPPM) of 10.1 A under the standard 10/1000 µs waveform. This value represents the upper limit of voltage seen by downstream circuitry during worst-case transient events and is critical for ensuring that protected ICs remain within their absolute maximum voltage ratings. The clamping ratio (VC/VBR) of approximately 1.38 reflects efficient avalanche conduction in the TPSMB43HE3/5BT.
Can the TPSMB43HE3/5BT be used in place of the SMBJ43A without PCB changes?
Yes, the TPSMB43HE3/5BT shares the identical SMB (DO-214AA) package outline, pad layout, and pin configuration with the SMBJ43A, enabling direct drop-in replacement on existing PCBs. Both devices feature cathode-band marking and identical mechanical dimensions. However, the TPSMB43HE3/5BT adds AEC-Q101 qualification and tighter thermal derating validation - meaning no layout changes are needed, but system-level automotive compliance is enhanced when upgrading from SMBJ43A to TPSMB43HE3/5BT.
TPSMB43HE3/5BT 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):
- 34.8V
- Voltage - Breakdown (Min):
- 38.7V
- Voltage - Clamping (Max) @ Ipp:
- 61.9V
- Current - Peak Pulse (10/1000µs):
- 9.7A
- 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 (SMBJ)
TPSMB43HE3/5BT FAQ
1.How can I place an order for TPSMB43HE3/5BT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB43HE3/5BT 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 TPSMB43HE3/5BT reliable?
The price and inventory of TPSMB43HE3/5BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB43HE3/5BT is usually 5 days.
3.What payment methods are accepted for TPSMB43HE3/5BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB43HE3/5BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB43HE3/5BT?
TPSMB43HE3/5BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB43HE3/5BT 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 TPSMB43HE3/5BT?
For technical support, including TPSMB43HE3/5BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB43HE3/5BT requirements.
6.How does Aetrix verify that TPSMB43HE3/5BT is sourced from the original manufacturer or authorized distributors?
All TPSMB43HE3/5BT 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 TPSMB43HE3/5BT meets industry standards.
7.What is the process for return or replacement of TPSMB43HE3/5BT?
All TPSMB43HE3/5BT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB43HE3/5BT, 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 TPSMB43HE3/5BT part is unused and in its original packaging.
Return procedure for TPSMB43HE3/5BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB43HE3/5BT Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
