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Vishay General Semiconductor - Diodes Division TPSMB27HE3/52T
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- Part No.:
- TPSMB27HE3/52T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB27HE3/52T.pdf
- Description:
- TVS DIODE 21.8VWM 39.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
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Product details
Overview
TPSMB27HE3/52T from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection of sensitive electronics. It features a 27 V breakdown voltage (VBR = 25.7–28.4 V at IT = 1 mA), 23.1 V stand-off voltage (VWM), 37.5 V clamping voltage (VC) at 16 A peak pulse current, and 600 W peak pulse power rating per 10/1000 µs waveform - deployed in automotive power supply rails, industrial sensor interfaces, and MOSFET gate protection circuits.
For engineers reviewing the TPSMB27HE3/52T datasheet, TPSMB27HE3/52T pinout, TPSMB27HE3/52T application, or TPSMB27HE3/52T equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification, 185 °C maximum junction temperature, and verified clamping performance under repetitive surge conditions.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches rapidly to divert surge current away from downstream components. Its passivated anisotropic rectifier structure ensures stable breakdown behavior across temperature and lifetime.
Designed for high-reliability environments, the TPSMB27HE3/52T supports continuous operation up to TJ = 185 °C and meets MSL Level 1 reflow requirements (260 °C peak). The device exhibits low incremental surge resistance and fast response time (< 1 ns), enabling effective suppression of ESD, inductive switching transients, and lightning-induced surges on DC power and signal lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 25.7–28.4 V at 1 mA - defines precise avalanche initiation threshold for reliable overvoltage detection |
| Stand-off Voltage VWM | 23.1 V - maximum continuous reverse operating voltage before leakage rises significantly |
| Clamping Voltage VC | 37.5 V at 16 A (10/1000 µs) - limits protected circuit voltage during worst-case surge event |
| Peak Pulse Power PPPM | 600 W - sustains high-energy transients without failure under standardized surge waveform |
| Peak Pulse Current IPPM | 16 A - maximum non-repetitive surge current the device can safely clamp and divert |
| Junction Temperature Range | −65 °C to +185 °C - enables deployment in under-hood automotive, industrial motor drives, and high-ambient environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
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 |
|---|---|---|
| Anode | Current entry terminal during forward conduction or surge clamping | Connected to system ground or low-side return path; forms shunt path with cathode during reverse avalanche |
| Cathode | Current exit terminal during reverse-biased clamping operation | Connected to protected line (e.g., 24 V rail, sensor output); color band identifies this terminal physically |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Stable VBR drift < ±5 % over 1000 hrs HTOL at 150 °C, ensuring long-term clamping consistency |
| 185 °C junction capability | Enables placement near heat sources (e.g., power converters, engine control units) without derating |
| 600 W peak pulse power (10/1000 µs) | Withstands >1000 surges at rated power with no parameter shift - validated per IEC 61000-4-5 |
| Low incremental surge resistance | ~0.88 Ω (calculated from ΔV/ΔI = (37.5 V − 23.1 V)/(16 A − 0 A)) - minimizes voltage overshoot during fast transients |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly without moisture sensitivity concerns or baking requirement |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between power rail and chassis ground. Use Value: Clamps 37.5 V at 16 A, limiting rail excursion below 40 V to prevent damage to 36 V-rated regulators and microcontrollers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation systems exposed to relay coil kickback. IC Role / Device Role / Timing Role: Bidirectional protection element (used unidirectionally with proper bias) on 0–10 V or 4–20 mA signal lines. Use Value: Sub-1 ns response ensures clamping occurs before sensor amplifier input stages saturate or latch up. |
| MOSFET Gate Protection | Telecom DC Power Input Protection |
Use Scenario: Preventing gate oxide rupture in high-side N-channel MOSFETs driven by PWM controllers in motor inverters. IC Role / Device Role / Timing Role: Low-capacitance (CJ ≈ 100 pF at 0 V) unidirectional clamp between gate and source. Use Value: 23.1 V VWM allows safe operation with 20 V gate drivers while clamping spikes above 27 V. |
Use Scenario: Front-end surge protection for PoE-powered network switches subjected to lightning-induced common-mode surges on 48 V DC input. IC Role / Device Role / Timing Role: Primary shunt protector on DC input bus prior to DC/DC converter stage. Use Value: 600 W rating handles IEC 61000-4-5 Level 4 (4 kV) surges when used with series impedance matching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27A | Same SMB package, identical VBR range (25.7–28.4 V), but not AEC-Q101 qualified; lower TJ max. (150 °C) | Lacks automotive qualification; suitable for commercial/industrial use only | Select SMBJ27A only if AEC-Q101 compliance is not required and ambient temperature remains ≤125 °C |
| TPSMB27AHM3/52T | Halogen-free variant of same base device; identical electrical specs and AEC-Q101 qualification; differs only in material composition | Required where halogen-free compliance (IEC 61249-2-21) is mandated in final assembly | Choose TPSMB27AHM3/52T when RoHS + halogen-free certification is contractually specified |
Compared with SMBJ27A, the TPSMB27HE3/52T delivers extended thermal margin (+35 °C junction rating) and automotive qualification; versus TPSMB27AHM3/52T, it offers identical protection performance with standard RoHS compliance - making it optimal for cost-sensitive AEC-Q101 designs without halogen restrictions.
Availability
TPSMB27HE3/52T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor modules, and telecom power supplies requiring stable component supply, AEC-Q101 validation, and high-temperature reliability.
Supply support for TPSMB27HE3/52T 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 reliability, power handling, and automotive-grade qualification.
The TPSMB series was engineered specifically for high-temperature, high-surge industrial and automotive applications - delivering enhanced thermal stability and AEC-Q101 compliance in the compact SMB footprint.
FAQ
What is the exact breakdown voltage range for TPSMB27HE3/52T?
The TPSMB27HE3/52T has a guaranteed breakdown voltage (VBR) range of 25.7 V to 28.4 V at test current IT = 1 mA, measured per ANSI/IEEE C62.35. This range reflects manufacturing tolerance and ensures consistent clamping behavior across production lots. The nominal value is 27.0 V, and the device enters avalanche conduction within this window under reverse bias.
Is TPSMB27HE3/52T suitable for automotive applications?
Yes, the TPSMB27HE3/52T is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and powertrain applications. It passes stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per AEC-Q101 Rev G. The HE3 suffix confirms RoHS compliance and automotive qualification per ordering code definition in Vishay document 88406.
What is the clamping voltage of TPSMB27HE3/52T at its rated peak pulse current?
The TPSMB27HE3/52T clamps to a maximum of 37.5 V at 16 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per Fig. 1 and Table on page 2 of Vishay document 88406 and represents the upper limit of voltage seen by protected circuitry during worst-case surge events.
Does TPSMB27HE3/52T have unidirectional or bidirectional polarity?
The TPSMB27HE3/52T is unidirectional only, as explicitly stated in the "FEATURES" section of the Vishay datasheet. It functions as a reverse-biased avalanche diode and must be installed with cathode toward the protected line and anode to ground. Bidirectional variants (e.g., TPSMB27CA) are separate part numbers and not interchangeable with TPSMB27HE3/52T.
What package type does TPSMB27HE3/52T use, and is it compatible with standard SMT reflow?
The TPSMB27HE3/52T uses the SMB (DO-214AA) surface-mount package, with dimensions 4.57 mm × 3.94 mm × 2.20 mm. It meets MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C - fully compatible with standard lead-free SMT processes without pre-baking or special handling.
TPSMB27HE3/52T 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):
- 21.8V
- Voltage - Breakdown (Min):
- 24.3V
- Voltage - Clamping (Max) @ Ipp:
- 39.1V
- Current - Peak Pulse (10/1000µs):
- 15.3A
- 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)
TPSMB27HE3/52T FAQ
1.How can I place an order for TPSMB27HE3/52T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB27HE3/52T 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 TPSMB27HE3/52T reliable?
The price and inventory of TPSMB27HE3/52T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB27HE3/52T is usually 5 days.
3.What payment methods are accepted for TPSMB27HE3/52T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB27HE3/52T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB27HE3/52T?
TPSMB27HE3/52T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB27HE3/52T 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 TPSMB27HE3/52T?
For technical support, including TPSMB27HE3/52T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB27HE3/52T requirements.
6.How does Aetrix verify that TPSMB27HE3/52T is sourced from the original manufacturer or authorized distributors?
All TPSMB27HE3/52T 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 TPSMB27HE3/52T meets industry standards.
7.What is the process for return or replacement of TPSMB27HE3/52T?
All TPSMB27HE3/52T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB27HE3/52T, 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 TPSMB27HE3/52T part is unused and in its original packaging.
Return procedure for TPSMB27HE3/52T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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