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Vishay General Semiconductor - Diodes Division TPSMB43A-1BHE3_A/I
- Part No.:
- TPSMB43A-1BHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB43A-1BHE3_A/I.pdf
- Description:
- TVS DIODE 600W SMB DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPSMB43A-1BHE3_A/I 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 clamping voltage (VC) - deployed in automotive sensor protection, industrial I/O interfaces, and DC power input stages.
For engineers reviewing the TPSMB43A-1BHE3_A/I datasheet, TPSMB43A-1BHE3_A/I pinout, TPSMB43A-1BHE3_A/I application, or TPSMB43A-1BHE3_A/I equivalent, this page delivers verified electrical parameters, SMB (DO-214AA) package mapping, cathode/anode terminal roles, AEC-Q101 qualification status, and real-world use cases in high-reliability 12 V/24 V systems.
Technical Context
The TPSMB43A-1BHE3_A/I operates as a silicon avalanche diode with passivated anisotropic rectifier technology, enabling stable clamping under repetitive surge conditions up to 0.01% duty cycle. Its 185 °C maximum junction temperature and MSL Level 1 rating support reflow soldering at 260 °C peak and long-term operation in under-hood automotive environments.
It delivers low incremental surge resistance and fast response time (<1 ns), ensuring effective suppression of ESD (IEC 61000-4-2) and EFT (IEC 61000-4-4) events without forward conduction during normal operation. The device is strictly unidirectional and requires correct polarity alignment - cathode marked by band - to avoid catastrophic failure during reverse-biased transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 / 43.0 / 45.2 V - ensures reliable avalanche initiation above system nominal voltage while avoiding false triggering |
| VWM | 36.8 V - maximum continuous reverse voltage before leakage exceeds 1 μA, compatible with 36 V rail designs |
| VC @ IPPM | 59.3 V - clamped voltage at 10.1 A surge, limiting downstream IC stress to safe levels during 10/1000 µs transients |
| PPPM | 600 W - peak pulse power handling capability per JEDEC standard waveform, sufficient for ISO 7637-2 Pulse 1/2a/5a |
| IFSM | 75 A - 8.3 ms half-sine surge current rating, supporting motor driver and relay coil suppression |
| TJ max. | +185 °C - enables placement near heat sources (e.g., power MOSFETs) without derating in automotive ECUs |
| Polarity | Unidirectional - protects against positive-going transients only; requires series blocking diode for bidirectional immunity |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated terminals, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); cathode indicated by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR |
| Anode | Reference node | Typically tied to system ground or low-impedance return path; defines polarity and clamping reference |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47 |
| Junction passivation | Reduces surface leakage and improves long-term stability under high humidity and bias stress |
| MSL Level 1 | Zero moisture sensitivity; no baking required prior to reflow, supporting high-yield SMT assembly |
| Low clamping ratio (VC/VBR = 1.38) | Minimizes overvoltage margin needed in protected circuit design, easing compliance with IEC 61000-4-5 |
| 185 °C TJ capability | Enables direct placement on PCBs adjacent to power components without thermal derating penalties |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching spikes in engine control modules. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between signal line and chassis ground, clamping surges within nanoseconds. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V interface ICs by limiting voltage to ≤59.3 V during 10/1000 µs pulses up to 600 W. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers against field-wiring transients and relay contact bounce. IC Role / Device Role / Timing Role: Standoff protector on dry-contact inputs, absorbing energy before it reaches optocoupler or microcontroller GPIO. Use Value: Maintains functional integrity under repeated 500 V/40 Ω surge tests (IEC 61000-4-5) with <1 µA leakage at 36.8 V operating voltage. |
| DC Power Input Stage | Telecom Line Interface |
Use Scenario: Secondary-level surge protection on 12 V/24 V DC power inputs of telematics units and ADAS cameras after primary MOV filtering. IC Role / Device Role / Timing Role: Fast-response clamp parallel to bulk capacitor, suppressing residual ringing and overshoot post-MOV clamping. Use Value: Reduces peak voltage seen by downstream DC-DC converters from >100 V to ≤59.3 V, preventing overvoltage shutdown or FET avalanche. |
Use Scenario: Protecting Ethernet PHY or RS-485 transceivers on outdoor telecom equipment from induced lightning surges on long cable runs. IC Role / Device Role / Timing Role: Unidirectional TVS on VCC and signal pairs, referenced to local ground plane with low-inductance layout. Use Value: Survives 10/700 µs telecom surges (ITU-T K.21) with <5% parameter shift after 1000 pulses due to robust junction passivation. |
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 footprint, lower thermal mass) | Limited to lower-energy transients; not rated for AEC-Q101 or 185 °C operation | Select when board space is constrained and automotive qualification is unnecessary |
| SMCJ43A | Same VBR, higher PPPM (1500 W), larger SMC (DO-214AB) package, same AEC-Q101 qualification | Better suited for primary-level protection in battery-fed systems where higher surge margin is required | Choose when protecting against ISO 16750-2 load dump or combined 10/1000 µs + 8/20 µs hybrid surges |
Compared with SMAJ43A and SMCJ43A, the TPSMB43A-1BHE3_A/I offers balanced 600 W surge capacity in the compact SMB footprint with full automotive qualification - making it optimal for secondary-stage protection where space, thermal robustness, and AEC-Q101 compliance are jointly critical.
Availability
TPSMB43A-1BHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and DC power input stages requiring stable component supply, AEC-Q101 traceability, and consistent SMB (DO-214AA) packaging across production lots.
Supply support for TPSMB43A-1BHE3_A/I 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 automotive, industrial, and computing markets.
The TPSMB series belongs to Vishay's PAR® (Protected Avalanche Rectifier) TVS platform, engineered specifically for high-temperature, high-surge environments where long-term parametric stability and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum operating temperature for the TPSMB43A-1BHE3_A/I?
The TPSMB43A-1BHE3_A/I has a maximum junction temperature (TJ) of +185 °C, validated per AEC-Q101 stress testing. This allows uninterrupted operation in under-hood automotive locations and near high-power components. Derating begins above 25 °C ambient per Figure 2 in the datasheet, and the device maintains full 600 W pulse capability up to TJ = 125 °C.
Is the TPSMB43A-1BHE3_A/I unidirectional or bidirectional?
The TPSMB43A-1BHE3_A/I is strictly unidirectional, as confirmed in the Features section and Electrical Characteristics table. It clamps only positive transients relative to its anode. For bidirectional protection, two devices must be used in series opposition or a dedicated bidirectional TVS (e.g., TPSMB43CA) selected - the TPSMB43A-1BHE3_A/I itself does not support reverse-polarity surge suppression.
Does the TPSMB43A-1BHE3_A/I meet AEC-Q101 requirements?
Yes - the HE3 suffix in TPSMB43A-1BHE3_A/I explicitly denotes AEC-Q101 qualification, as stated in the Mechanical Data and Ordering Information sections. This includes testing for temperature cycling, high-temperature reverse bias, and ESD per JESD22-A114. The device is approved for automotive powertrain and body electronics applications requiring zero defects in field deployment.
What is the clamping voltage of the TPSMB43A-1BHE3_A/I at its rated surge current?
The TPSMB43A-1BHE3_A/I has a maximum clamping voltage (VC) of 59.3 V at its rated peak pulse current (IPPM) of 10.1 A, measured using the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuits during worst-case transient events.
Can the TPSMB43A-1BHE3_A/I be used in place of the TPSMB43CA?
No - the TPSMB43A-1BHE3_A/I is unidirectional, while the TPSMB43CA is bidirectional. Substituting them requires circuit redesign: the TPSMB43A-1BHE3_A/I cannot suppress negative transients without additional components. The "A" suffix always indicates unidirectional configuration; "CA" denotes bidirectional. Using TPSMB43A-1BHE3_A/I in a bidirectional application risks device failure and unprotected transients.
TPSMB43A-1BHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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:
- 53.3V
- 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 (SMBJ)
TPSMB43A-1BHE3_A/I FAQ
1.How can I place an order for TPSMB43A-1BHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB43A-1BHE3_A/I 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_A/I reliable?
The price and inventory of TPSMB43A-1BHE3_A/I 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_A/I is usually 5 days.
3.What payment methods are accepted for TPSMB43A-1BHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB43A-1BHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB43A-1BHE3_A/I?
TPSMB43A-1BHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB43A-1BHE3_A/I 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_A/I?
For technical support, including TPSMB43A-1BHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB43A-1BHE3_A/I requirements.
6.How does Aetrix verify that TPSMB43A-1BHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB43A-1BHE3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of TPSMB43A-1BHE3_A/I?
All TPSMB43A-1BHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB43A-1BHE3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for TPSMB43A-1BHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB43A-1BHE3_A/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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