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Vishay General Semiconductor - Diodes Division TPSMA20AHE3/61T
- Part No.:
- TPSMA20AHE3/61T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA20AHE3/61T.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,422
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Product details
Overview
TPSMA20AHE3/61T from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching and lightning-induced transients on power rails and signal lines. It features a 20 V nominal breakdown voltage (VBR), 400 W peak pulse power (10/1000 µs), 14.4 V maximum clamping voltage at 14.4 A peak pulse current, 1.0 W steady-state power dissipation, and operates up to +185 °C junction temperature - deployed in automotive sensor protection and industrial DC input stages.
For engineers reviewing the TPSMA20AHE3/61T datasheet, TPSMA20AHE3/61T pinout, TPSMA20AHE3/61T application, or TPSMA20AHE3/61T equivalent, key selection criteria include unidirectional polarity, SMA (DO-214AC) package compatibility, AEC-Q101 qualification, TJ = 185 °C rating, and clamping performance under 10/1000 µs surge conditions.
Technical Context
The TPSMA20AHE3/61T uses passivated anisotropic rectifier technology to deliver stable clamping with low incremental surge resistance and fast response time (<1 ns). Its unidirectional architecture enables robust forward conduction during overvoltage events while maintaining low leakage (<1 µA at 17.1 V) at stand-off voltage.
Rated for 40 A non-repetitive peak forward surge current (8.3 ms half-sine), it supports high-reliability mounting on 5.0 mm × 5.0 mm copper pads and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. The device is AEC-Q101 qualified and RoHS-compliant with matte tin-plated leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 19.0 V / 20.0 V / 21.0 V - ensures reliable triggering above system operating voltage without false trips |
| VWM | 17.1 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 27.7 V - clamps 10/1000 µs surges to safe levels for downstream 24 V logic or MOSFET gate drivers |
| PPPM | 400 W - sustains standardized lightning/surge transients per IEC 61000-4-5 without degradation |
| TJ max | +185 °C - enables operation in under-hood automotive or high-ambient industrial environments |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct cathode orientation |
| Package | SMA (DO-214AC) - industry-standard SMD footprint compatible with automated assembly and thermal pad layouts |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with UL 94 V-0 flammability rating; cathode indicated by color band; terminals are matte tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connects to protected line; conducts surge current to ground when VBR exceeded |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Enables stable VBR drift <±5% over lifetime and 185 °C operation without parametric shift |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, and ESD testing per stress requirements |
| Low clamping ratio (VC/VBR) | 1.39 - minimizes voltage overshoot during surge, reducing risk of latch-up in adjacent ICs |
| MSL Level 1 rating | Allows unlimited floor life and 260 °C peak reflow without moisture-induced damage |
| 400 W pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity on 24 V supply rails |
Applications
| Automotive Sensor Protection | Industrial PLC Input Stage |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends from load dump and ISO 7637-2 pulses in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before reaching sensitive interface ICs. Use Value: Maintains signal integrity under 100 V/100 ms load dump events while adding <0.5 pF capacitance to preserve signal rise time. | Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on isolated input channel, coordinated with optocoupler input stage. Use Value: Limits transient voltage to ≤27.7 V, preventing damage to input Schmitt triggers and enabling >100,000 surge cycles per channel. |
| Telecom Power Supply Clamp | Consumer Appliance Motor Drive |
Use Scenario: Secondary-side transient suppression on 12 V bias rails feeding PoE-powered Ethernet PHYs and clock buffers. IC Role / Device Role / Timing Role: Standoff-clamp TVS parallel to LDO output, activated only during lightning-induced common-mode surges. Use Value: Achieves <100 ns response with 1 µA leakage at 12 V, eliminating standby power penalty and preserving regulation accuracy. | Use Scenario: DC bus protection in smart home appliance motor inverters subject to brush-commutator noise and ESD coupling. IC Role / Device Role / Timing Role: Low-inductance TVS across H-bridge supply rail to absorb inductive kickback from brushed DC motors. Use Value: Withstands 40 A 8.3 ms surge pulses and clamps to 27.7 V, preventing MOSFET avalanche failure during stall conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A | Same VBR (19–21 V), but SMB package (DO-214AA); 600 W PPPM; higher thermal mass | Requires larger PCB pad area; better for higher average surge duty cycles | Select when board space allows larger footprint and higher pulse energy handling is needed |
| SMCJ20A | Same VBR, but SMC package (DO-214AB); 1500 W PPPM; 10× higher surge capacity | Used where IEC 61000-4-5 Level 5 (6 kV) immunity is required | Choose for mission-critical industrial systems needing extended surge margin beyond standard 400 W |
Compared with SMBJ20A and SMCJ20A, the TPSMA20AHE3/61T offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and 400 W capability - making it ideal for space-constrained automotive and consumer designs where 10/1000 µs surge compliance is sufficient.
Availability
TPSMA20AHE3/61T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC input stages, telecom power supply clamping, and consumer appliance motor drive circuits requiring stable component supply and AEC-Q101 assurance.
Supply support for TPSMA20AHE3/61T 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-qualified components.
The TPSMA series belongs to Vishay's PAR® (Precision Avalanche Regulator) transient suppressor family, engineered specifically for robust, repeatable clamping in harsh environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 validation and 185 °C operation.
FAQ
What is the breakdown voltage tolerance for TPSMA20AHE3/61T?
The TPSMA20AHE3/61T has a specified breakdown voltage range of 19.0 V (min) to 21.0 V (max) at 1.0 mA test current, with 20.0 V nominal. This ±5% tolerance ensures consistent triggering across production lots and temperature ranges up to +185 °C, critical for predictable clamping in automotive and industrial systems where overvoltage thresholds must remain stable.
Is TPSMA20AHE3/61T suitable for bidirectional transient protection?
No, TPSMA20AHE3/61T is unidirectional only - it clamps positive transients relative to ground and conducts forward current from cathode to anode. For bidirectional protection, a pair of TPSMA20AHE3/61T devices in series opposition or a dedicated bidirectional TVS such as SMBJ20CA would be required. The device marking code "BGP" and polarity band confirm its unidirectional configuration.
Does TPSMA20AHE3/61T meet AEC-Q101 stress test requirements?
Yes, TPSMA20AHE3/61T is AEC-Q101 qualified - explicitly stated in the Vishay datasheet (Document 88405, Rev. 23-Jan-2024) for the HE3 suffix variant. It undergoes qualification testing including high-temperature operating life (HTOL), temperature cycling (TC), and electrostatic discharge (HBM/MM), validating suitability for automotive under-hood and body electronics applications.
What is the maximum clamping voltage of TPSMA20AHE3/61T under surge conditions?
The maximum clamping voltage (VC) of TPSMA20AHE3/61T is 27.7 V at 14.4 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is guaranteed across temperature and ensures downstream 24 V-rated components remain within safe operating limits during transient events, with measured clamping ratio of 1.39 (VC/VBR).
Can TPSMA20AHE3/61T be used in DC power supply input protection?
Yes, TPSMA20AHE3/61T is commonly applied for DC input protection on 12–24 V systems, including automotive battery inputs and industrial 24 V rails. Its 17.1 V stand-off voltage (VWM) provides margin above nominal 12 V or 24 V operation, while its 400 W pulse rating handles load dump and inductive switching transients - provided correct unidirectional placement and adequate PCB copper thermal relief are implemented.
TPSMA20AHE3/61T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- 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):
- 14.4A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
TPSMA20AHE3/61T FAQ
1.How can I place an order for TPSMA20AHE3/61T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA20AHE3/61T 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 TPSMA20AHE3/61T reliable?
The price and inventory of TPSMA20AHE3/61T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA20AHE3/61T is usually 5 days.
3.What payment methods are accepted for TPSMA20AHE3/61T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA20AHE3/61T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA20AHE3/61T?
TPSMA20AHE3/61T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA20AHE3/61T 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 TPSMA20AHE3/61T?
For technical support, including TPSMA20AHE3/61T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA20AHE3/61T requirements.
6.How does Aetrix verify that TPSMA20AHE3/61T is sourced from the original manufacturer or authorized distributors?
All TPSMA20AHE3/61T 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 TPSMA20AHE3/61T meets industry standards.
7.What is the process for return or replacement of TPSMA20AHE3/61T?
All TPSMA20AHE3/61T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA20AHE3/61T, 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 TPSMA20AHE3/61T part is unused and in its original packaging.
Return procedure for TPSMA20AHE3/61T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA20AHE3/61T Tags
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