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Vishay General Semiconductor - Diodes Division TPSMC20AHE3/57T
- Part No.:
- TPSMC20AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC20AHE3/57T.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPSMC20AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping fast voltage transients on power and signal lines. It features 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 27.7 V maximum clamping voltage (VC) - deployed in automotive power rail protection and industrial sensor interface circuits.
For engineers reviewing the TPSMC20AHE3/57T datasheet, TPSMC20AHE3/57T pinout, TPSMC20AHE3/57T application, or TPSMC20AHE3/57T equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 185 °C junction temperature rating, low incremental surge resistance, and compatibility with high-reliability PCB layouts requiring MSL Level 1 reflow.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping performance under repetitive surge stress. Its 10/1000 μs waveform response supports IEC 61000-4-5 compliance in system-level surge testing.
The device operates across -65 °C to +185 °C junction temperature range and maintains specified VBR stability via a +0.082 %/°C temperature coefficient. It is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits 3.5 V max forward voltage at 100 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 19.0 / 20.0 / 21.0 V - ensures reliable turn-on above 17.1 V operating line voltage while avoiding false triggering |
| VWM | 17.1 V - maximum continuous reverse voltage before leakage exceeds 1 μA, defining safe operating margin |
| VC @ IPPM | 27.7 V - clamped voltage during 54.2 A transient, limiting downstream IC stress to safe levels |
| PPPM | 1500 W - peak power dissipation capability with 10/1000 μs waveform, meeting IEC 61000-4-5 Level 4 |
| TJ max | +185 °C - enables use in under-hood automotive environments and high-power industrial enclosures |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct cathode orientation in circuit |
| MSL Level | Level 1 per J-STD-020 - supports standard reflow without baking, simplifying manufacturing flow |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, UL 94 V-0 molding compound. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to ground or low-impedance reference plane; carries full surge current during clamping |
| Cathode | Clamping node input | Connected to protected line (e.g., 12 V rail or sensor output); defines VWM and VBR reference |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements |
| 1500 W peak pulse power | Withstands 10/1000 μs surges up to 54.2 A without degradation in automotive load-dump scenarios |
| Low clamping ratio (VC/VBR = 1.385) | Minimizes overvoltage exposure to downstream MOSFETs or microcontrollers during ESD/EFT events |
| 185 °C junction rating | Enables placement near heat sources (e.g., DC-DC converters) without derating in industrial motor drives |
| MSL Level 1 | Eliminates pre-bake requirement for SMT assembly, reducing production cost and cycle time |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from ISO 7637-2 load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power input and ground, responding within <1 ns to limit voltage to ≤27.7 V. Use Value: Prevents latch-up or gate oxide damage in MCU power supplies and CAN transceivers during vehicle-level surge events. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Standoff-rated TVS on 4–20 mA or 0–10 V signal lines, absorbing field-induced spikes from relay switching. Use Value: Maintains signal integrity below 17.1 V standby while clamping >5 kV EFT bursts to sub-30 V peaks. |
| Telecom Line Card Surge Suppression | Computer Peripheral Port Protection |
Use Scenario: Front-end protection for PoE-powered Ethernet switches handling lightning-induced surges on data lines. IC Role / Device Role / Timing Role: Primary unidirectional clamp on DC bias rails feeding PHY ICs, coordinated with secondary GDT or MOV stages. Use Value: Limits let-through energy to <15 mJ per event, preserving PHY IC reliability across 100,000+ surge cycles. |
Use Scenario: USB-C or HDMI port VBUS/supply line protection in docking stations exposed to hot-plug transients. IC Role / Device Role / Timing Role: Fast-response TVS on 5 V/20 V supply paths, activated before internal LDOs or USB controllers experience overvoltage. Use Value: Clamps 10/1000 μs surges to 27.7 V within 1 ns, preventing permanent damage to Type-C controller ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A | Lower PPPM (400 W), higher VC (32.4 V), same SMC package and unidirectional polarity | Not AEC-Q101 qualified; limited to commercial-grade consumer or office equipment | Select SMAJ20A only when surge threat level is ≤IEC 61000-4-5 Level 2 and automotive qualification is unnecessary |
| TPSMC20AHM3/57T | Halogen-free variant with identical electrical specs, same AEC-Q101 qualification, and enhanced whisker resistance (JESD 201 Class 2) | Required for RoHS-compliant, halogen-free BOMs in EU automotive Tier-1 programs | Choose TPSMC20AHM3/57T when material compliance mandates halogen-free construction without sacrificing performance |
Compared with SMAJ20A and TPSMC20AHM3/57T, the TPSMC20AHE3/57T delivers full 1500 W surge immunity and AEC-Q101 validation in a cost-optimized RoHS-compliant build, making it the default choice for automotive and industrial designs where both reliability and regulatory compliance are mandatory.
Availability
TPSMC20AHE3/57T is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface circuits, telecom line card surge suppression, and computer peripheral port protection requiring stable component supply across extended temperature and lifecycle demands.
Supply support for TPSMC20AHE3/57T 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 TPSMC series belongs to Vishay's PAR® family of transient voltage suppressors, engineered specifically for high-temperature stability and AEC-Q101-compliant surge protection in automotive power systems and harsh-environment electronics.
FAQ
What is the maximum clamping voltage of the TPSMC20AHE3/57T at its rated peak pulse current?
The TPSMC20AHE3/57T has a maximum clamping voltage (VC) of 27.7 V when subjected to its rated peak pulse current (IPPM) of 54.2 A under a 10/1000 μs waveform. This value is measured per standard test conditions defined in ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 19-Jan-2024. The clamping voltage directly determines the peak stress imposed on downstream components during surge events, making it critical for validating protection margins in designs using the TPSMC20AHE3/57T.
Is the TPSMC20AHE3/57T qualified for automotive applications?
Yes, the TPSMC20AHE3/57T is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (Document Number: 88407). This qualification covers stress tests including high-temperature operating life, temperature cycling, and surge robustness - confirming suitability for automotive powertrain, body control, and infotainment systems. The HE3 suffix denotes RoHS-compliance and AEC-Q101 qualification, and the TPSMC20AHE3/57T meets all requirements without derating up to +185 °C junction temperature.
What does the "HE3" suffix indicate in TPSMC20AHE3/57T?
The "HE3" suffix in TPSMC20AHE3/57T identifies a RoHS-compliant, AEC-Q101-qualified version with matte tin-plated leads that meet J-STD-002 and JESD 22-B102 solderability standards. It also satisfies JESD 201 Class 2 whisker resistance requirements. The "57T" denotes tape-and-reel packaging per Vishay's preferred delivery mode - specifically, 7-inch diameter reels with 850 units per reel. This suffix distinguishes it from HM3 (halogen-free) and non-automotive variants.
Can the TPSMC20AHE3/57T be used in bidirectional configurations?
No, the TPSMC20AHE3/57T is unidirectional only, as confirmed in the Vishay datasheet under FEATURES and PRIMARY CHARACTERISTICS. It conducts in reverse bias above VBR but blocks forward current beyond its 3.5 V forward voltage limit at 100 A. For bidirectional protection, a separate pair of unidirectional devices or a dedicated bidirectional TVS (e.g., TPSMC20CA) must be used - the TPSMC20AHE3/57T itself cannot suppress negative-going transients on the same line.
What is the thermal derating behavior of the TPSMC20AHE3/57T above 25 °C ambient?
The TPSMC20AHE3/57T follows the derating curve shown in Figure 2 of the Vishay datasheet: peak pulse power (PPPM) decreases linearly above TA = 25 °C, reaching ~50 % of 1500 W at ~125 °C ambient (assuming standard 0.31" × 0.31" copper pads). Derating is based on junction temperature limits (TJ ≤ 185 °C), and actual performance depends on PCB layout, copper area, and airflow. Designers must apply this derating when sizing the TPSMC20AHE3/57T for high-ambient industrial or under-hood automotive locations.
TPSMC20AHE3/57T 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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 54.2A
- 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)
TPSMC20AHE3/57T FAQ
1.How can I place an order for TPSMC20AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC20AHE3/57T 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 TPSMC20AHE3/57T reliable?
The price and inventory of TPSMC20AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC20AHE3/57T is usually 5 days.
3.What payment methods are accepted for TPSMC20AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC20AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC20AHE3/57T?
TPSMC20AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC20AHE3/57T 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 TPSMC20AHE3/57T?
For technical support, including TPSMC20AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC20AHE3/57T requirements.
6.How does Aetrix verify that TPSMC20AHE3/57T is sourced from the original manufacturer or authorized distributors?
All TPSMC20AHE3/57T 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 TPSMC20AHE3/57T meets industry standards.
7.What is the process for return or replacement of TPSMC20AHE3/57T?
All TPSMC20AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC20AHE3/57T, 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 TPSMC20AHE3/57T part is unused and in its original packaging.
Return procedure for TPSMC20AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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