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Vishay General Semiconductor - Diodes Division TPSMC20HE3/9AT
- Part No.:
- TPSMC20HE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC20HE3/9AT.pdf
- Description:
- TVS DIODE 16.2VWM 29.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,533
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Product details
Overview
TPSMC20HE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-reliability overvoltage protection of sensitive electronics. It features a 20 V nominal breakdown voltage (VBR), 17.1 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 µs), 54.2 A peak pulse current (IPPM), and clamps to 27.7 V at IPPM. It is used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supply circuits.
For engineers reviewing the TPSMC20HE3/9AT datasheet, TPSMC20HE3/9AT pinout, TPSMC20HE3/9AT application, or TPSMC20HE3/9AT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 185 °C junction temperature rating, low clamping voltage under surge, and compatibility with automated SMT assembly per J-STD-002.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for stable clamping performance across wide temperature ranges. Its 185 °C maximum junction temperature enables operation in under-hood automotive environments and high-temperature industrial control modules without derating penalties.
The device delivers 1500 W peak pulse power with a 10/1000 µs waveform and exhibits low incremental surge resistance, ensuring consistent voltage limiting during fast transients such as inductive load switching and ESD events on 12 V and 24 V DC systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 19.0 / 20.0 / 21.0 V - Ensures reliable triggering above system operating voltage while avoiding false trips. |
| VWM | 17.1 V - Maximum continuous reverse voltage before leakage exceeds 1 µA; matches 12–24 V rail protection needs. |
| VC @ IPPM | 27.7 V - Clamping voltage limits downstream component stress during 54.2 A surge event. |
| PPPM | 1500 W - Handles high-energy transients per ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4. |
| TJ max. | +185 °C - Supports AEC-Q101 automotive qualification and extended thermal margin in enclosed enclosures. |
| Polarity | Unidirectional - Protects against positive-going transients only; requires external polarity management for bidirectional use. |
| Package | SMC (DO-214AB) - Standardized SMT footprint with 8.0 mm × 8.0 mm copper pad requirement for thermal dissipation. |
Pinout & Package
TPSMC20HE3/9AT uses the SMC (DO-214AB) surface-mount package with two terminals: cathode marked by a color band, and anode. The package meets UL 94 V-0 flammability rating and features matte tin-plated leads compliant with J-STD-002 solderability and JESD 22-B102 whisker testing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VBR exceeded. |
| Anode | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Stable VBR drift < ±5 % over lifetime and temperature; critical for long-term reliability in automotive ECUs. |
| AEC-Q101 qualification | Validated for automotive-grade stress tests including HTGB, HTRB, and temperature cycling - required for engine control and ADAS modules. |
| MSL Level 1 | Reflow-compatible up to 260 °C peak; supports standard lead-free reflow profiles without preconditioning. |
| Low clamping ratio (VC/VBR) | 1.385 - Minimizes overvoltage overshoot during fast transients, reducing risk to 20 V-rated logic and gate drivers. |
| Fast response time | < 1 ns - Reacts before most microsecond-scale transients fully develop, preserving signal integrity on data and sensor lines. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump transients (ISO 7637-2 Pulse 5a) on 12 V/24 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Primary clamping device placed between power input and DC-DC converter input stage. Use Value: Limits voltage to ≤27.7 V during 1500 W surges, preventing damage to upstream regulators and enabling compliance with OEM electrical architecture specs. | Use Scenario: Protecting analog front-end inputs of pressure, temperature, and position sensors in PLC I/O modules. IC Role / Device Role / Timing Role: Signal-line TVS placed directly at connector entry point before ESD protection diodes and op-amp buffers. Use Value: Clamps fast ESD (IEC 61000-4-2 ±8 kV contact) and inductive kickback (<100 ns rise) without distorting mV-level sensor signals. |
| MOSFET Gate Driver Protection | Telecom DC Power Input Protection |
Use Scenario: Shielding high-side N-channel MOSFET gates from Miller-induced voltage spikes in motor drive half-bridges. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between gate and source to clamp dv/dt-induced overshoot. Use Value: Prevents gate oxide breakdown with sub-ns response and 27.7 V clamping, maintaining FET reliability under repetitive PWM switching. | Use Scenario: Safeguarding -48 V telecom rectifier outputs against lightning-induced surges (IEC 61000-4-5 Level 4). IC Role / Device Role / Timing Role: Secondary-stage TVS installed after bulk filter capacitors and before DC/DC converters. Use Value: Absorbs 1500 W energy without thermal runaway, sustaining operation after multiple 10/1000 µs surges due to 185 °C TJ rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A | Lower PPPM (600 W), same VBR (19–21 V), SMB package (smaller footprint, lower thermal mass) | Not rated for 185 °C; limited to commercial/industrial ambient (TJ max = 150 °C) | Select when space-constrained and surge energy is ≤600 W; verify thermal design for repeated events. |
| TPSMC20AHM3/9AT | Identical electrical specs; halogen-free molding compound and JESD 201 Class 2 whisker resistance (vs. HE3's standard RoHS) | Required for halogen-free BOM compliance in EU/Asia automotive programs | Choose HM3 suffix where material compliance mandates exceed standard RoHS requirements. |
Compared with SMBJ20A and TPSMC20AHM3/9AT, the TPSMC20HE3/9AT offers superior thermal robustness (185 °C vs. 150 °C) and higher surge capacity (1500 W vs. 600 W), making it the preferred choice for automotive under-hood and high-reliability industrial deployments where sustained thermal margin and single-event survivability are critical.
Availability
TPSMC20HE3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and MOSFET gate driver protection requiring stable component supply, AEC-Q101 qualification, and high-temperature operational continuity.
Supply support for TPSMC20HE3/9AT 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, precision, and automotive-grade validation.
The TPSMC series is part of Vishay's PAR® (Protection Against Transients) family, engineered specifically for high-energy transient suppression in harsh environments including automotive power systems, industrial automation, and telecom infrastructure.
FAQ
What is the breakdown voltage tolerance for TPSMC20HE3/9AT?
The TPSMC20HE3/9AT has a breakdown voltage (VBR) range of 19.0 V (min) to 21.0 V (max) at 1 mA test current, with 20.0 V nominal. This ±5 % tolerance ensures predictable clamping onset while accommodating process variation and temperature drift, and is verified per ANSI/IEEE C62.35 standards in the official Vishay datasheet (Doc. #88407).
Is TPSMC20HE3/9AT AEC-Q101 qualified?
Yes, TPSMC20HE3/9AT is AEC-Q101 qualified. The HE3 suffix explicitly denotes RoHS-compliant and AEC-Q101-qualified construction, validated for automotive applications including engine control, body electronics, and ADAS subsystems. Qualification covers HTGB, HTRB, temperature cycling, and mechanical shock per the AEC standard.
What is the maximum clamping voltage of TPSMC20HE3/9AT at its rated surge current?
The maximum clamping voltage (VC) of TPSMC20HE3/9AT is 27.7 V at 54.2 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions (mounted on 8.0 mm × 8.0 mm copper pads) and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Does TPSMC20HE3/9AT support lead-free reflow soldering?
Yes, TPSMC20HE3/9AT supports lead-free reflow soldering. It meets MSL Level 1 per J-STD-020 with a maximum peak reflow temperature of 260 °C, and its matte tin-plated leads comply with J-STD-002 for solderability and JESD 22-B102 for whisker resistance, ensuring robust manufacturability in modern SMT lines.
What is the polarity configuration of TPSMC20HE3/9AT?
TPSMC20HE3/9AT is unidirectional. It protects against positive-going transients only, with the cathode (marked by a color band) connected to the line being protected and the anode referenced to ground. Bidirectional protection requires either a separate device or a back-to-back configuration using two unidirectional units.
TPSMC20HE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 16.2V
- Voltage - Breakdown (Min):
- 18V
- Voltage - Clamping (Max) @ Ipp:
- 29.1V
- Current - Peak Pulse (10/1000µs):
- 51.5A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
TPSMC20HE3/9AT FAQ
1.How can I place an order for TPSMC20HE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC20HE3/9AT 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 TPSMC20HE3/9AT reliable?
The price and inventory of TPSMC20HE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC20HE3/9AT is usually 5 days.
3.What payment methods are accepted for TPSMC20HE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC20HE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC20HE3/9AT?
TPSMC20HE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC20HE3/9AT 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 TPSMC20HE3/9AT?
For technical support, including TPSMC20HE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC20HE3/9AT requirements.
6.How does Aetrix verify that TPSMC20HE3/9AT is sourced from the original manufacturer or authorized distributors?
All TPSMC20HE3/9AT 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 TPSMC20HE3/9AT meets industry standards.
7.What is the process for return or replacement of TPSMC20HE3/9AT?
All TPSMC20HE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC20HE3/9AT, 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 TPSMC20HE3/9AT part is unused and in its original packaging.
Return procedure for TPSMC20HE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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