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Vishay General Semiconductor - Diodes Division TPSMP20HE3/85A
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- Part No.:
- TPSMP20HE3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP20HE3/85A.pdf
- Description:
- TVS DIODE 16.2VWM 29.1VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,755
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Product details
Overview
TPSMP20HE3/85A from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode in DO-220AA (SMP) package, with 18.0 V to 22.0 V breakdown voltage (VBR), 400 W peak pulse power (PPPM), and 13.7 A peak pulse current (IPPM). It protects signal lines and drive transistors in automotive sensor units and electronic control modules.
For engineers reviewing the TPSMP20HE3/85A datasheet, TPSMP20HE3/85A pinout, TPSMP20HE3/85A application, or TPSMP20HE3/85A equivalent, key selection criteria include AEC-Q101 qualification, low-profile 1.0 mm height, 17.3 V clamping voltage at IPPM, and MSL Level 1 reflow compatibility up to 260 °C.
Technical Context
This TVS diode uses patented PAR oxide-passivated chip construction for stable clamping and low incremental surge resistance. Its unidirectional configuration enables robust protection of DC-biased signal paths against ESD and load-dump transients.
Designed for surface-mount placement on FR-4 PCBs with 5.0 × 5.0 mm copper pads per terminal, it delivers 29.1 V maximum clamping voltage at 13.7 A (10/1000 µs waveform) and operates across -65 °C to +185 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 18.0 V min / 22.0 V max at 1.0 mA - defines minimum voltage at which device enters avalanche conduction |
| Clamping Voltage VC | 29.1 V max at 13.7 A (10/1000 µs) - limits transient voltage seen by protected IC or transistor |
| Peak Pulse Power PPPM | 400 W - sustains high-energy transients without failure under specified test conditions |
| Stand-off Voltage VWM | 16.2 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| Reverse Leakage IR | 1.0 µA max at VWM, 25 °C - ensures minimal power loss and signal integrity in standby |
| Junction Temperature Range | -65 °C to +185 °C - supports operation in under-hood automotive environments |
| MSL Rating | Level 1 per J-STD-020 - allows single-reflow assembly without moisture sensitivity concerns |
Pinout & Package
DO-220AA (SMP) package: ultra-low-profile surface-mount case with 1.0 mm typical height, matte tin-plated leads, cathode indicated by color band, compliant with UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side of protected line; enables unidirectional clamping |
| Cathode | Current exit point during forward conduction; marked with band | Connected to higher-potential rail (e.g., VCC or signal bias); defines polarity-sensitive protection path |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR oxide passivation | Enables stable, repeatable avalanche characteristics and long-term reliability under repetitive surges |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for downstream ICs |
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| 1.0 mm profile | Reduces board space and enables placement near sensitive connectors or IC pins without height interference |
| RoHS-compliant & whisker-tested (JESD201 Class 2) | Ensures long-term solder joint integrity and compliance with global environmental regulations |
Applications
| Automotive Sensor Protection | Power Line Transient Suppression |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine bay modules. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor output and ECU input to shunt ESD and ISO 7637-2 pulses. Use Value: Limits transient voltage to ≤29.1 V, preserving ADC input integrity and preventing latch-up in microcontroller front-end circuitry. |
Use Scenario: Safeguarding 12 V supply rails feeding infotainment head units and telematics gateways. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing load-dump energy (ISO 16750-2) and jump-start surges. Use Value: Withstands 400 W peak pulse power, enabling reliable protection without derating or parallel devices. |
| Industrial Motor Drive Interface | Automotive CAN Transceiver Protection |
|
Use Scenario: Shielding gate driver signal lines and feedback paths in BLDC motor controllers exposed to switching noise. IC Role / Device Role / Timing Role: Fast-response (nanosecond-level) TVS suppressing coupled transients from high-di/dt power stages. Use Value: 13.7 A IPPM and 29.1 V VC ensure clamping occurs before MOSFET gate oxide breakdown thresholds are exceeded. |
Use Scenario: Protecting CAN_H/CAN_L differential pair inputs in automotive ECUs against ESD and bus faults. IC Role / Device Role / Timing Role: Dual-device implementation (one per line) providing bidirectional protection via unidirectional pairing. Use Value: Low 1.0 µA leakage at 16.2 V VWM avoids signal distortion while maintaining CAN bus common-mode range compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A | DO-214AC (SMA) package; 20 V VBR; 400 W PPPM; 27.7 V VC at 14.4 A; not AEC-Q101 qualified | Lacks automotive qualification; taller profile (2.29 mm) limits placement near connectors | Preferred for cost-sensitive industrial designs where AEC-Q101 is not required |
| TPSMP20AHE3/85A | Higher VBR (19.0–21.0 V); identical DO-220AA package; same 400 W rating; 27.7 V VC at 14.4 A | Better suited for systems with tighter VWM margin above nominal 12 V rail (e.g., 13.5 V startup) | Select when operating voltage tolerances require ≥17.1 V stand-off to avoid leakage-induced drift |
Compared with SMAJ20A and TPSMP20AHE3/85A, the TPSMP20HE3/85A provides optimal balance of AEC-Q101 compliance, ultra-low height, and precise 16.2 V VWM for legacy 12 V automotive systems requiring minimal design change.
Availability
TPSMP20HE3/85A is available at Aetrix Electronics and suitable for automotive sensor units, power line transient suppression, and industrial motor drive interfaces requiring stable component supply and full traceability.
Supply support for TPSMP20HE3/85A 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 high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive applications.
The TPSMP20HE3/85A belongs to Vishay's eSMP™ series of high-power-density TVS diodes, engineered specifically for AEC-Q101-compliant transient protection in space-constrained automotive electronics.
FAQ
What is the clamping voltage of the TPSMP20HE3/85A under standard test conditions?
The TPSMP20HE3/85A has a maximum clamping voltage (VC) of 29.1 V at 13.7 A peak pulse current using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and reflects the upper limit of voltage imposed on the protected circuit during surge events. The TPSMP20HE3/85A maintains this clamping performance across its full operating temperature range.
Is the TPSMP20HE3/85A qualified for automotive use?
Yes, the TPSMP20HE3/85A is AEC-Q101 qualified and designated as high-reliability/automotive grade (suffix "A" in base part number). It meets stringent stress tests for temperature cycling, humidity, mechanical shock, and surge endurance required for under-hood and chassis-mounted applications. The TPSMP20HE3/85A is explicitly rated for automotive sensor units and electronic control modules.
What package type does the TPSMP20HE3/85A use, and what are its key mechanical features?
The TPSMP20HE3/85A uses the DO-220AA (SMP) surface-mount package with a typical height of 1.0 mm. Key mechanical features include matte tin-plated leads compliant with J-STD-002 and JESD22-B102, UL 94 V-0 molding compound, and cathode identification via color band. The TPSMP20HE3/85A is supplied in 13" diameter plastic tape and reel (85A packaging code).
How does the TPSMP20HE3/85A differ from the TPSMP20AHE3/85A variant?
The TPSMP20HE3/85A has a breakdown voltage range of 18.0–22.0 V and stand-off voltage of 16.2 V, whereas the TPSMP20AHE3/85A specifies 19.0–21.0 V VBR and 17.1 V VWM. Both share identical DO-220AA packaging and 400 W PPPM, but the TPSMP20AHE3/85A offers tighter VBR tolerance and higher VWM, making it preferable for systems with elevated nominal rail voltages.
What is the maximum junction temperature rating for the TPSMP20HE3/85A?
The TPSMP20HE3/85A has a maximum junction temperature (TJ) of +185 °C and a storage temperature range of -65 °C to +185 °C. This wide thermal capability supports deployment in high-temperature automotive locations such as engine control units and transmission control modules. The TPSMP20HE3/85A maintains full electrical specifications within this range.
TPSMP20HE3/85A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-220AA
- Series:
- PAR®, eSMP®
- 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):
- 28.8A
- 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-220AA (SMP)
TPSMP20HE3/85A FAQ
1.How can I place an order for TPSMP20HE3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP20HE3/85A 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 TPSMP20HE3/85A reliable?
The price and inventory of TPSMP20HE3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP20HE3/85A is usually 5 days.
3.What payment methods are accepted for TPSMP20HE3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP20HE3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP20HE3/85A?
TPSMP20HE3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP20HE3/85A 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 TPSMP20HE3/85A?
For technical support, including TPSMP20HE3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP20HE3/85A requirements.
6.How does Aetrix verify that TPSMP20HE3/85A is sourced from the original manufacturer or authorized distributors?
All TPSMP20HE3/85A 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 TPSMP20HE3/85A meets industry standards.
7.What is the process for return or replacement of TPSMP20HE3/85A?
All TPSMP20HE3/85A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP20HE3/85A, 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 TPSMP20HE3/85A part is unused and in its original packaging.
Return procedure for TPSMP20HE3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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