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Vishay General Semiconductor - Diodes Division TPSMB27A-1BHE3/52T
- Part No.:
- TPSMB27A-1BHE3/52T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB27A-1BHE3/52T.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPSMB27A-1BHE3/52T from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching surges and lightning-induced transients on power rails and signal lines. It features a 27 V nominal breakdown voltage (VBR), 23.1 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), 16 A peak pulse current (IPPM), and 37.5 V maximum clamping voltage (VC) - deployed in automotive engine control units, industrial PLC I/O modules, and telecom power supplies.
For engineers reviewing the TPSMB27A-1BHE3/52T datasheet, TPSMB27A-1BHE3/52T pinout, TPSMB27A-1BHE3/52T application, or TPSMB27A-1BHE3/52T equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, TJ = 185 °C junction rating, and clamping performance under repetitive 10/1000 µs surge conditions.
Technical Context
This TVS diode operates as a voltage-clamping protection device in parallel with sensitive downstream circuitry. Its silicon avalanche structure delivers sub-nanosecond response time and low incremental surge resistance to limit transient overvoltage before damage occurs to ICs, MOSFETs, or sensors.
Designed for high-reliability environments, the TPSMB27A-1BHE3/52T uses passivated anisotropic rectifier technology and meets MSL Level 1 (260 °C reflow). It is RoHS-compliant, halogen-free (per HM3 suffix logic), and qualified to AEC-Q101 - confirming suitability for automotive under-hood applications where thermal stability up to +185 °C is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 25.7 / 27.0 / 28.4 V - ensures reliable avalanche conduction onset above normal operating voltage of 23.1 V |
| VWM | 23.1 V - maximum continuous reverse working voltage without leakage exceeding 1 μA |
| VC @ IPPM | 37.5 V - clamped voltage during 16 A 10/1000 µs surge, limiting stress on protected devices |
| PPPM | 600 W - peak pulse power handling capability under standard 10/1000 µs waveform |
| IFSM | 75 A - surge current rating for 8.3 ms half-sine wave, supporting motor drive and relay coil suppression |
| TJ max. | +185 °C - enables operation in high-temperature automotive and industrial enclosures without derating |
| αT | 0.087 %/°C - temperature coefficient of VBR, enabling accurate breakdown prediction across operating range |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode indicated by molded band. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal avalanche junction | Connected to higher-potential rail (e.g., VIN or signal line); absorbs positive transients toward ground |
| Anode | Cathode of internal avalanche junction | Connected to reference (typically GND); completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional polarity | Protects against positive-going transients only; avoids DC blocking on bidirectional signal lines |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without moisture-induced failure |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes voltage overshoot during surge, reducing risk of latch-up or gate oxide rupture in protected FETs/ICs |
| 185 °C junction rating | Enables placement near heat sources (e.g., power inductors, engine compartments) without thermal derating |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump and alternator ripple transients on 24 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Parallel-connected clamping device that diverts surge current away from microcontroller power inputs and CAN transceivers. Use Value: Limits voltage excursion to ≤37.5 V during 16 A surges, preventing brownout resets and permanent damage to 3.3 V/5 V logic supplies. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF at 0 V) shunt protector placed at connector entry point before signal conditioning op-amps. Use Value: Clamps fast-rising transients (<1 ns rise time) before they couple into high-gain front-end stages, preserving measurement accuracy. |
| Telecom DC Power Input Protection | Motor Drive Gate Driver Protection |
Use Scenario: Safeguarding 48 V PoE-powered equipment inputs against lightning-induced surges entering via Ethernet cables or AC/DC adapters. IC Role / Device Role / Timing Role: Primary-level TVS on main DC input rail, coordinated with upstream fuses and secondary-stage filtering. Use Value: Absorbs 600 W pulses without degradation, maintaining system uptime in outdoor telecom cabinets exposed to frequent atmospheric surges. | Use Scenario: Protecting high-side and low-side gate drivers in BLDC inverters from shoot-through-inducing voltage spikes during MOSFET switching transitions. IC Role / Device Role / Timing Role: Localized clamp across driver supply pins (VDD-GND), suppressing ringing induced by parasitic inductance in gate loops. Use Value: Prevents false turn-on due to VGS overshoot > ±20 V, ensuring robust commutation timing and reducing EMI generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27A | Same SMB package, identical VBR (25.7–28.4 V), but rated for 600 W at 10/1000 µs and not AEC-Q101 qualified | Lacks automotive qualification; suitable for commercial/industrial use only | Select SMBJ27A when AEC-Q101 is not required and cost sensitivity outweighs qualification needs |
| SMCJ27A | 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 SMCJ27A only if system-level surge testing exceeds 600 W requirements or legacy designs already use SMC footprint |
Compared with SMBJ27A and SMCJ27A, the TPSMB27A-1BHE3/52T uniquely combines AEC-Q101 qualification, SMB footprint compatibility, and guaranteed 185 °C operation - making it the optimal choice for space-constrained automotive modules requiring zero-layout-change upgrades from non-qualified TVS diodes.
Availability
TPSMB27A-1BHE3/52T is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom power supply hardening requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for TPSMB27A-1BHE3/52T 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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on high-reliability, high-temperature, and automotive-grade performance.
The TPSMB series is part of Vishay's PAR® (Protection Avalanche Rectifier) platform, engineered specifically for robust transient suppression in harsh environments - targeting automotive power distribution, industrial control, and infrastructure equipment where failure tolerance is mission-critical.
FAQ
What is the exact breakdown voltage range for TPSMB27A-1BHE3/52T?
The TPSMB27A-1BHE3/52T has a guaranteed breakdown voltage (VBR) range of 25.7 V (minimum) to 28.4 V (maximum) at 1 mA test current, with a nominal value of 27.0 V. This specification is measured per ANSI/IEEE C62.35 and confirmed across production lots per Vishay Document Number 88406. The TPSMB27A-1BHE3/52T maintains this tolerance under standard test conditions at 25 °C ambient.
Is TPSMB27A-1BHE3/52T AEC-Q101 qualified?
Yes, the TPSMB27A-1BHE3/52T is AEC-Q101 qualified. Its HE3 suffix denotes RoHS-compliance and full AEC-Q101 qualification, including stress tests for temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. This qualification is explicitly documented in Vishay's TPSMB6.8A–TPSMB43A datasheet (Rev. 23-Jan-2024, Doc. #88406), confirming its suitability for automotive under-hood applications.
What is the clamping voltage of TPSMB27A-1BHE3/52T at its rated peak pulse current?
The TPSMB27A-1BHE3/52T exhibits a maximum clamping voltage (VC) of 37.5 V at its rated peak pulse current (IPPM) of 16 A, tested using the standard 10/1000 µs waveform. This value is specified in the Electrical Characteristics table of the official datasheet and reflects worst-case performance under defined surge conditions - critical for verifying safe operating margins of downstream components like microcontrollers or gate drivers.
Does TPSMB27A-1BHE3/52T support lead-free reflow assembly?
Yes, the TPSMB27A-1BHE3/52T supports lead-free reflow assembly and is rated MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. Its matte tin-plated terminals meet J-STD-002 and JESD 22-B102 solderability standards, and the molding compound complies with UL 94 V-0 flammability requirements - ensuring robust manufacturability in modern SMT lines without moisture sensitivity concerns.
What is the maximum junction temperature rating for TPSMB27A-1BHE3/52T?
The TPSMB27A-1BHE3/52T has a maximum junction temperature (TJ) rating of +185 °C, validated per Vishay's high-temperature stability testing. This allows uninterrupted operation in demanding thermal environments such as engine control units, motor drives, and industrial power supplies - significantly exceeding standard commercial-grade TVS diodes limited to +150 °C or lower.
TPSMB27A-1BHE3/52T 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):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 16A
- 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)
TPSMB27A-1BHE3/52T FAQ
1.How can I place an order for TPSMB27A-1BHE3/52T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB27A-1BHE3/52T 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 TPSMB27A-1BHE3/52T reliable?
The price and inventory of TPSMB27A-1BHE3/52T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB27A-1BHE3/52T is usually 5 days.
3.What payment methods are accepted for TPSMB27A-1BHE3/52T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB27A-1BHE3/52T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB27A-1BHE3/52T?
TPSMB27A-1BHE3/52T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB27A-1BHE3/52T 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 TPSMB27A-1BHE3/52T?
For technical support, including TPSMB27A-1BHE3/52T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB27A-1BHE3/52T requirements.
6.How does Aetrix verify that TPSMB27A-1BHE3/52T is sourced from the original manufacturer or authorized distributors?
All TPSMB27A-1BHE3/52T 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 TPSMB27A-1BHE3/52T meets industry standards.
7.What is the process for return or replacement of TPSMB27A-1BHE3/52T?
All TPSMB27A-1BHE3/52T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB27A-1BHE3/52T, 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 TPSMB27A-1BHE3/52T part is unused and in its original packaging.
Return procedure for TPSMB27A-1BHE3/52T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB27A-1BHE3/52T Tags
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