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Vishay General Semiconductor - Diodes Division TPSMB20AHE3/52T
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- Part No.:
- TPSMB20AHE3/52T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB20AHE3/52T.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,838
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Product details
Overview
TPSMB20AHE3/52T from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching surges and lightning-induced transients on power rails and signal lines. It features a 20 V nominal breakdown voltage (VBR = 19–21 V), 17.1 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 μs), 21.7 A peak pulse current (IPPM), and 27.7 V maximum clamping voltage (VC) - deployed in automotive engine control units, industrial sensor interfaces, and telecom power supply protection.
For engineers reviewing the TPSMB20AHE3/52T datasheet, TPSMB20AHE3/52T pinout, TPSMB20AHE3/52T application, or TPSMB20AHE3/52T equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification, 185 °C junction temperature rating, and low incremental surge resistance for robust ESD/surge immunity in high-reliability embedded systems.
Technical Context
This TVS diode operates as a voltage-clamping device in parallel with protected circuitry, activating when reverse voltage exceeds its breakdown threshold to divert transient energy to ground. Its passivated anisotropic rectifier structure ensures stable VBR drift (αT = 0.082 %/°C) and low leakage (<1 μA at VWM) across -65 °C to +185 °C operating range.
It delivers 600 W peak pulse power under standardized 10/1000 μs waveform conditions with 0.01 % duty cycle, and supports repetitive surge handling when mounted on 5.0 mm × 5.0 mm copper pads. The device is rated for 75 A non-repetitive forward surge (8.3 ms half-sine) and exhibits 3.5 V max forward voltage at 50 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 19.0 / 20.0 / 21.0 V - defines precise clamping activation threshold; ensures reliable turn-on before downstream IC damage |
| VWM | 17.1 V - maximum continuous reverse working voltage; sets safe operating margin below breakdown |
| VC @ IPPM | 27.7 V - clamped voltage during 21.7 A transient; determines worst-case overvoltage seen by protected load |
| PPPM | 600 W - peak pulse power handling (10/1000 μs); quantifies surge energy absorption capability |
| IFSM | 75 A - 8.3 ms half-sine surge rating; validates robustness against motor-switching or relay-bounce events |
| TJ max. | +185 °C - enables operation in under-hood automotive or high-ambient industrial environments |
| Polarity | Unidirectional - protects against negative transients only; requires correct cathode orientation in PCB layout |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, MSL Level 1 (260 °C reflow), RoHS-compliant and AEC-Q101 qualified. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to ground or low-impedance reference; completes clamping loop during surge event |
| Cathode | Protected line connection | Connected to power rail or signal line being safeguarded; reverse-biased during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR performance and <1 μA leakage at VWM up to 150 °C junction temperature |
| AEC-Q101 qualification (HE3 suffix) | Validates reliability for automotive applications including powertrain, body electronics, and ADAS modules |
| 185 °C maximum junction temperature | Supports deployment in high-temperature zones such as engine compartments and industrial motor drives |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive MOSFETs and ICs |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking; simplifies manufacturing and reduces assembly risk |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and alternator ripple transients in passenger vehicles. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed between power input and ground, activated within nanoseconds of overvoltage onset. Use Value: Limits transient voltage to ≤27.7 V, preventing latch-up or gate oxide damage in microcontrollers and CAN transceivers. |
Use Scenario: Safeguarding analog output lines of pressure/temperature sensors in PLC I/O modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Unidirectional shunt protector on 4–20 mA loop or 0–10 V signal path, absorbing induced spikes from nearby motor drives. Use Value: Maintains signal integrity by clamping transients while adding <1 pF junction capacitance at 1 MHz, avoiding bandwidth degradation. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Guarding 48 V PoE-powered equipment inputs against lightning-induced surges on outdoor Ethernet cables. IC Role / Device Role / Timing Role: Primary-level TVS on DC input stage, coordinated with upstream GDT or MOV for staged surge suppression. Use Value: Withstands 600 W pulses and 21.7 A peak current, enabling compliance with IEC 61000-4-5 Level 4 (4 kV) testing. |
Use Scenario: Shielding BLDC motor driver FETs from back-EMF spikes during commutation in smart home appliances. IC Role / Device Role / Timing Role: Fast-response clamp across high-side/low-side FET drains and source, limiting VDS overshoot. Use Value: Achieves sub-nanosecond response time and 27.7 V clamping, reducing required FET voltage rating and system BOM cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A | Same SMB package, 20 V VBR, but rated for 600 W with 10/1000 μs waveform and not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated | Select SMBJ20A if AEC-Q101 is unnecessary and cost optimization is prioritized over automotive-grade reliability validation |
| SMCJ20A | Higher 1500 W PPPM, same VBR/VC, but larger SMC (DO-214AB) package requiring PCB footprint change | Used where higher surge margin is needed (e.g., outdoor telecom, utility metering), accepting larger board area | Choose SMCJ20A only when 600 W is insufficient and mechanical redesign is acceptable for enhanced robustness |
Compared with SMBJ20A and SMCJ20A, the TPSMB20AHE3/52T uniquely combines AEC-Q101 qualification, SMB footprint, and 185 °C operation - making it the preferred choice for space-constrained, high-temperature automotive and industrial applications demanding certified reliability.
Availability
TPSMB20AHE3/52T is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, and telecom DC input surge suppression requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPSMB20AHE3/52T 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 solutions.
The TPSMB series belongs to Vishay's PAR® (Precision Avalanche Regulator) transient suppressor family, engineered specifically for robust, repeatable clamping in harsh-environment applications including engine control, industrial automation, and infrastructure power systems.
FAQ
What is the exact breakdown voltage range for TPSMB20AHE3/52T?
The TPSMB20AHE3/52T has a guaranteed breakdown voltage range of 19.0 V (minimum) to 21.0 V (maximum) at 1 mA test current, with a nominal value of 20.0 V. This specification is measured per ANSI/IEEE C62.35 and validated across production lots to ensure consistent clamping behavior in the TPSMB20AHE3/52T.
Is TPSMB20AHE3/52T qualified for automotive use?
Yes, the TPSMB20AHE3/52T carries the HE3 suffix, indicating full AEC-Q101 qualification per Vishay's documentation. This certification covers stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life - confirming suitability for automotive powertrain and body electronics applications.
What is the maximum clamping voltage of TPSMB20AHE3/52T under surge conditions?
The TPSMB20AHE3/52T exhibits a maximum clamping voltage (VC) of 27.7 V when subjected to its rated peak pulse current of 21.7 A (10/1000 μs waveform). This value represents the worst-case overvoltage imposed on protected circuitry and is critical for ensuring downstream components remain within safe operating limits.
Does TPSMB20AHE3/52T support high-temperature operation?
Yes, the TPSMB20AHE3/52T is rated for continuous operation from -65 °C to +185 °C junction temperature. Its passivated anisotropic rectifier technology and thermal design enable stable electrical parameters - including low leakage and predictable VBR drift - even at sustained 150–185 °C ambient conditions.
What package type does TPSMB20AHE3/52T use, and is it RoHS-compliant?
The TPSMB20AHE3/52T uses the SMB (DO-214AA) surface-mount package with matte tin-plated leads, meeting J-STD-002 and JESD 22-B102 solderability standards. It is RoHS-compliant and halogen-free, with MSL Level 1 rating (peak reflow temperature 260 °C), as confirmed in Vishay document 88406.
TPSMB20AHE3/52T 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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 21.7A
- 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)
TPSMB20AHE3/52T FAQ
1.How can I place an order for TPSMB20AHE3/52T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB20AHE3/52T 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 TPSMB20AHE3/52T reliable?
The price and inventory of TPSMB20AHE3/52T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB20AHE3/52T is usually 5 days.
3.What payment methods are accepted for TPSMB20AHE3/52T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB20AHE3/52T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB20AHE3/52T?
TPSMB20AHE3/52T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB20AHE3/52T 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 TPSMB20AHE3/52T?
For technical support, including TPSMB20AHE3/52T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB20AHE3/52T requirements.
6.How does Aetrix verify that TPSMB20AHE3/52T is sourced from the original manufacturer or authorized distributors?
All TPSMB20AHE3/52T 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 TPSMB20AHE3/52T meets industry standards.
7.What is the process for return or replacement of TPSMB20AHE3/52T?
All TPSMB20AHE3/52T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB20AHE3/52T, 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 TPSMB20AHE3/52T part is unused and in its original packaging.
Return procedure for TPSMB20AHE3/52T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB20AHE3/52T Tags
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