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Vishay General Semiconductor - Diodes Division TPSMB30AHE3/52T
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- Part No.:
- TPSMB30AHE3/52T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB30AHE3/52T.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPSMB30AHE3/52T from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching transients and lightning-induced surges on power rails and signal lines. It features a 30 V breakdown voltage (VBR = 28.5–31.5 V at IT = 1 mA), 25.6 V stand-off voltage (VWM), 41.4 V maximum clamping voltage (VC) at 14.5 A peak pulse current, 600 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature - deployed in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB30AHE3/52T datasheet, TPSMB30AHE3/52T pinout, TPSMB30AHE3/52T application, or TPSMB30AHE3/52T equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, clamping performance under 10/1000 µs surge, and thermal derating above 25 °C ambient.
Technical Context
The TPSMB30AHE3/52T employs passivated anisotropic rectifier technology with junction passivation optimized for high-reliability operation. Its unidirectional architecture provides low incremental surge resistance and sub-nanosecond response time to suppress fast-rising transients while maintaining stable VBR over temperature (αT = 0.088 %/°C).
Rated for 75 A non-repetitive forward surge current (8.3 ms half-sine), it delivers 600 W peak pulse power under JEDEC-standard 10/1000 µs waveform conditions, with clamping validated at 41.4 V when subjected to 14.5 A IPPM - enabling robust protection of downstream MOSFETs and ICs in 24 V automotive and industrial control systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 28.5 / 30.0 / 31.5 V at 1 mA - defines precise voltage threshold where avalanche conduction begins, critical for accurate system-level overvoltage trip point alignment |
| VWM | 25.6 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA; sets safe margin below VBR for 24 V nominal rail use |
| VC @ IPPM | 41.4 V at 14.5 A - clamped voltage during worst-case surge; determines maximum stress imposed on protected load |
| PPPM | 600 W (10/1000 µs) - peak transient energy handling capacity; supports repetitive surge events at ≤0.01% duty cycle without degradation |
| TJ max | +185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures without thermal shutdown |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" x 0.130" footprint and MSL Level 1 rating for lead-free reflow compatibility |
| AEC-Q101 | Qualified - certified for automotive-grade reliability per stress test requirements including HTGB, HTRB, and temperature cycling |
Pinout & Package
TPSMB30AHE3/52T uses the SMB (DO-214AA) surface-mount package: cathode-indicating band on one end, matte tin-plated leads solderable per J-STD-002, compliant with UL 94 V-0 flammability rating, and rated MSL Level 1 (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage event |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane; completes clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR drift < ±5% over 1000 hrs at 150 °C, supporting long-term reliability in harsh environments |
| 600 W peak pulse power (10/1000 µs) | Withstands repeated ESD and load-dump transients common in 24 V vehicle electrical systems without parameter shift |
| TJ = 185 °C capability | Permits placement near heat sources (e.g., power converters) without thermal derating penalties in engine control units |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including powertrain, body electronics, and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients (<1 ns rise time), improving protection margin for sensitive CMOS inputs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs of engine control modules (ECMs) against ISO 7637-2 load dump pulses and inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between VIN and GND, clamping transients within 1 ns to limit voltage seen by downstream DC/DC controllers and microcontrollers. Use Value: Maintains system uptime by preventing latch-up or gate oxide damage in protected ICs during 120 V/50 ms load dump events. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Transient suppressor mounted at connector entry point, shunting ESD (IEC 61000-4-2) and cable discharge events away from precision op-amps and ADC front-ends. Use Value: Preserves measurement accuracy by limiting transient-induced offset errors and preventing sensor calibration drift after repeated ESD exposure. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Securing -48 V DC input stages of telecom base station power supplies against lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping device in series with upstream fuse and parallel to bulk capacitor; activated within nanoseconds upon voltage exceeding VWM. Use Value: Enables compliance with ITU-T K.20 surge immunity requirements while minimizing board space versus multi-stage protection schemes. |
Use Scenario: Shielding gate driver ICs and MOSFETs in smart home appliance motor inverters (e.g., washing machine drum drives) from commutation spikes. IC Role / Device Role / Timing Role: Fast-response TVS placed across motor phase outputs and ground to clamp inductive flyback energy during PWM switching transitions. Use Value: Extends MOSFET lifetime by reducing dv/dt stress and preventing parasitic turn-on caused by voltage overshoot exceeding VGS(th). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | Same SMB package, identical VBR/VC specs, but not AEC-Q101 qualified; lower TJ max (150 °C) | Approved for commercial/industrial use only; unsuitable for automotive under-hood deployment | Select SMBJ30A only for cost-sensitive non-automotive designs where AEC-Q101 and 185 °C operation are unnecessary |
| TPSMB30AHM3/52T | Halogen-free variant with identical electrical specs and AEC-Q101 qualification; same HE3 mechanical form factor | Required for RoHS+halogen-free compliance mandates in EU automotive Tier 1 supply chains | Choose TPSMB30AHM3/52T when halogen-free material declaration is contractually required, otherwise TPSMB30AHE3/52T suffices |
Compared with SMBJ30A and TPSMB30AHM3/52T, the TPSMB30AHE3/52T uniquely balances AEC-Q101 qualification, 185 °C operation, and RoHS compliance without halogen-free overhead - making it optimal for mainstream automotive electronics where regulatory flexibility and thermal headroom are both critical.
Availability
TPSMB30AHE3/52T is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and telecom DC input protection requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for TPSMB30AHE3/52T 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, optoelectronics, and passive components for demanding industrial and automotive applications.
The TPSMB series is part of Vishay's PAR® TVS platform, engineered specifically for high-temperature, high-surge-energy environments - targeting automotive electronics, industrial controls, and infrastructure equipment needing AEC-Q101-qualified transient protection.
FAQ
What is the clamping voltage of the TPSMB30AHE3/52T at its rated peak pulse current?
The TPSMB30AHE3/52T has a maximum clamping voltage (VC) of 41.4 V when subjected to its rated peak pulse current of 14.5 A under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and represents the upper bound of voltage imposed on protected circuitry during worst-case surge events. The TPSMB30AHE3/52T maintains this clamping performance across its full operating temperature range, ensuring consistent protection behavior in automotive and industrial environments.
Is the TPSMB30AHE3/52T qualified for automotive applications?
Yes, the TPSMB30AHE3/52T is AEC-Q101 qualified, as confirmed by Vishay's official documentation and ordering code suffix "HE3". This qualification covers stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling - validating its suitability for automotive powertrain, body electronics, and ADAS subsystems. The TPSMB30AHE3/52T also supports operation up to +185 °C junction temperature, meeting under-hood thermal requirements.
What does the "HE3" suffix in TPSMB30AHE3/52T signify?
Within Vishay's naming convention, the "HE3" suffix in TPSMB30AHE3/52T indicates RoHS-compliant construction and AEC-Q101 qualification. It distinguishes this variant from non-automotive versions (e.g., standard TPSMB30A) and confirms compliance with automotive reliability standards. The "52T" denotes tape-and-reel packaging in 13-inch reels (3200 units per reel), per Vishay's preferred delivery mode for automated SMT assembly lines.
How does the TPSMB30AHE3/52T compare to the SMBJ30A in terms of thermal performance?
The TPSMB30AHE3/52T supports a maximum junction temperature of +185 °C, whereas the SMBJ30A is rated only to +150 °C. This 35 °C advantage allows the TPSMB30AHE3/52T to operate reliably in higher ambient environments - such as near power converters in engine control units - without requiring additional thermal derating. Both share identical electrical specs and SMB package dimensions, but only the TPSMB30AHE3/52T carries AEC-Q101 certification and extended thermal capability.
What is the standoff voltage (VWM) of the TPSMB30AHE3/52T, and why is it important?
The TPSMB30AHE3/52T has a maximum working peak reverse voltage (VWM) of 25.6 V, meaning it remains in high-impedance blocking mode up to that voltage level with leakage current ≤1 µA. This parameter ensures no significant power loss or false triggering during normal 24 V system operation, while providing sufficient margin below the 30 V breakdown threshold to accommodate ripple and tolerance. Selecting a VWM correctly prevents premature conduction and preserves system efficiency - a key design consideration for the TPSMB30AHE3/52T in always-on automotive modules.
TPSMB30AHE3/52T 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):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 14.5A
- 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)
TPSMB30AHE3/52T FAQ
1.How can I place an order for TPSMB30AHE3/52T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB30AHE3/52T 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 TPSMB30AHE3/52T reliable?
The price and inventory of TPSMB30AHE3/52T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB30AHE3/52T is usually 5 days.
3.What payment methods are accepted for TPSMB30AHE3/52T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB30AHE3/52T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB30AHE3/52T?
TPSMB30AHE3/52T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB30AHE3/52T 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 TPSMB30AHE3/52T?
For technical support, including TPSMB30AHE3/52T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB30AHE3/52T requirements.
6.How does Aetrix verify that TPSMB30AHE3/52T is sourced from the original manufacturer or authorized distributors?
All TPSMB30AHE3/52T 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 TPSMB30AHE3/52T meets industry standards.
7.What is the process for return or replacement of TPSMB30AHE3/52T?
All TPSMB30AHE3/52T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB30AHE3/52T, 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 TPSMB30AHE3/52T part is unused and in its original packaging.
Return procedure for TPSMB30AHE3/52T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB30AHE3/52T Tags
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