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Vishay General Semiconductor - Diodes Division TPSMC20AHE3/9AT
- Part No.:
- TPSMC20AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC20AHE3/9AT.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPSMC20AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping 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) - used to protect MOSFETs, ICs, and sensor interfaces in automotive power supplies.
For engineers reviewing the TPSMC20AHE3/9AT datasheet, TPSMC20AHE3/9AT pinout, TPSMC20AHE3/9AT application, or TPSMC20AHE3/9AT equivalent, key selection criteria include its AEC-Q101 qualification, 185 °C junction temperature rating, low clamping ratio (VC/VBR ≈ 1.39), unidirectional polarity, and SMC package compatibility with high-reliability board-level surge protection layouts.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and fast response to ESD and lightning-induced surges. Its junction design enables stable operation up to TJ = 185 °C and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
The device delivers 1500 W peak pulse power under 10/1000 μs waveform with low incremental surge resistance and excellent clamping linearity. It is rated for 200 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and exhibits 1.0 μA max reverse leakage at VWM and 10 μA at 150 °C.
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 accommodating ±5% tolerance and temperature drift |
| VWM | 17.1 V - maximum continuous reverse voltage before significant leakage; sets safe margin below VBR for DC-biased protection |
| VC @ IPPM | 27.7 V - clamped voltage during 54.2 A transient; defines upper limit of protected circuit stress during surge events |
| PPPM | 1500 W - peak pulse power handling capability with 10/1000 μs waveform; validates robustness against IEC 61000-4-5 Level 4 surges |
| TJ max | +185 °C - enables use in under-hood automotive environments and high-power industrial enclosures without thermal derating penalties |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct cathode orientation toward protected line |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement for thermal dissipation |
Pinout & Package
Package: SMC (DO-214AB), molded case with matte tin-plated leads, UL 94 V-0 compliant compound, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction or surge clamping | Connected to ground or low-impedance return path; establishes reference for unidirectional clamping action |
| Cathode | Current exit terminal during clamping; marked with band | Connected to protected line (e.g., 12 V rail or signal input); determines polarity and surge direction sensitivity |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Junction passivation | Reduces surface leakage and improves long-term stability under high humidity and bias conditions |
| MSL Level 1 | Zero floor life limitation; supports standard SMT reflow without dry pack or baking requirements |
| Low clamping ratio | VC/VBR = 1.39 - minimizes overvoltage exposure to downstream ICs compared to higher-ratio TVS devices |
| Fast response time | < 1.0 ps intrinsic response - limits voltage overshoot during nanosecond-scale ESD events (IEC 61000-4-2) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs and body control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power rail and chassis ground to absorb 1500 W transients. Use Value: Withstands 185 °C ambient and maintains 27.7 V clamping during 54.2 A surges - prevents MOSFET gate oxide failure and microcontroller brownout. |
Use Scenario: Safeguarding analog inputs of pressure/temperature sensors in factory automation PLCs exposed to relay coil switching noise. IC Role / Device Role / Timing Role: Low-leakage (1.0 μA @ 17.1 V) TVS shunting transient energy before it reaches ADC front-end. Use Value: 17.1 V stand-off allows full 0–10 V sensor range operation while clamping spikes to ≤27.7 V - preserves measurement accuracy and avoids input stage saturation. |
| Consumer USB Power Delivery Protection | Telecom Base Station DC Feeder Protection |
|
Use Scenario: Secondary overvoltage protection on 20 V PD input rails in portable docking stations after primary DC-DC regulation. IC Role / Device Role / Timing Role: Standby-mode TVS suppressing coupling from adjacent high-speed data lines or hot-swap inrush. Use Value: 1.0 μA leakage at 17.1 V ensures minimal standby current drain; SMC package fits compact 2-layer PCB layouts near USB-C connector. |
Use Scenario: Front-end surge suppression on -48 V DC feeder lines entering 5G base station cabinets subjected to lightning-induced surges. IC Role / Device Role / Timing Role: High-energy unidirectional TVS mounted at cabinet entry point to divert >1 kA transients before distribution. Use Value: 1500 W rating and 200 A IFSM support repeated surge exposure; AEC-Q101 qualification correlates with extended field lifetime in telecom infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A | Lower PPPM (400 W), same VBR (19–21 V), SMA package (smaller thermal mass) | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); not rated for load dump or IEC 61000-4-5 | Select when space-constrained and surge energy is ≤400 W; verify thermal derating on 5.0 mm × 5.0 mm pads |
| TPSMC20AHM3/9AT | Identical electrical specs; halogen-free molding compound and JESD201 Class 2 whisker resistance | Required for RoHS-compliant + halogen-free BOMs in EU automotive programs; same footprint and assembly process | Choose for strict environmental compliance mandates; no layout or performance trade-offs vs. TPSMC20AHE3/9AT |
Compared with SMAJ20A and TPSMC20AHM3/9AT, the TPSMC20AHE3/9AT provides the highest surge energy handling (1500 W) in the SMC form factor while maintaining AEC-Q101 qualification and 185 °C operation - making it optimal for automotive and industrial systems where both reliability and power-handling are critical.
Availability
TPSMC20AHE3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC feeder surge suppression requiring stable component supply across multi-year production cycles.
Supply support for TPSMC20AHE3/9AT 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 high-reliability, high-temperature, and automotive-qualified components.
The TPSMC series was engineered specifically for AEC-Q101-compliant transient suppression in harsh-environment applications - delivering stable clamping performance from -65 °C to +185 °C with validated long-term reliability under thermal cycling and humidity stress.
FAQ
What is the maximum clamping voltage of the TPSMC20AHE3/9AT at its rated peak pulse current?
The TPSMC20AHE3/9AT 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 ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The TPSMC20AHE3/9AT maintains this clamping performance across its full operating temperature range.
Is the TPSMC20AHE3/9AT suitable for automotive applications?
Yes, the TPSMC20AHE3/9AT is AEC-Q101 qualified and explicitly designed for automotive use, with a maximum junction temperature of +185 °C and validation across temperature cycling, highly accelerated life testing (HALT), and ESD stress. Its HE3 suffix denotes RoHS-compliance and AEC-Q101 qualification, making the TPSMC20AHE3/9AT appropriate for engine control units, ADAS power supplies, and infotainment system protection.
What is the stand-off voltage (VWM) of the TPSMC20AHE3/9AT, and why does it matter?
The TPSMC20AHE3/9AT has a stand-off voltage (VWM) of 17.1 V, which is the maximum continuous reverse voltage it can block without exceeding 1.0 μA leakage current. This parameter ensures the TPSMC20AHE3/9AT remains non-conductive during normal operation - critical for protecting 12 V or 15 V power rails where false triggering must be avoided. Exceeding VWM risks premature conduction and power loss.
Does the TPSMC20AHE3/9AT have a bidirectional configuration option?
No, the TPSMC20AHE3/9AT is unidirectional only, as confirmed in the Vishay datasheet revision 19-Jan-2024. It protects against positive-going transients on the cathode side relative to anode ground. For bidirectional protection, engineers must select a different part number (e.g., TPSMC20CA series), as the TPSMC20AHE3/9AT's internal structure and marking code (EGP) specify unidirectional polarity exclusively.
What is the package type and mounting requirement for the TPSMC20AHE3/9AT?
The TPSMC20AHE3/9AT uses the SMC (DO-214AB) surface-mount package, requiring 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads at each terminal for thermal performance per datasheet Fig. 2. Its cathode is marked by a color band, and terminals are matte tin-plated for solderability per J-STD-002. The TPSMC20AHE3/9AT is MSL Level 1 and compatible with standard lead-free reflow profiles peaking at 260 °C.
TPSMC20AHE3/9AT 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):
- 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)
TPSMC20AHE3/9AT FAQ
1.How can I place an order for TPSMC20AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC20AHE3/9AT 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 TPSMC20AHE3/9AT reliable?
The price and inventory of TPSMC20AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC20AHE3/9AT is usually 5 days.
3.What payment methods are accepted for TPSMC20AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC20AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC20AHE3/9AT?
TPSMC20AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC20AHE3/9AT 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 TPSMC20AHE3/9AT?
For technical support, including TPSMC20AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC20AHE3/9AT requirements.
6.How does Aetrix verify that TPSMC20AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All TPSMC20AHE3/9AT 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 TPSMC20AHE3/9AT meets industry standards.
7.What is the process for return or replacement of TPSMC20AHE3/9AT?
All TPSMC20AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC20AHE3/9AT, 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 TPSMC20AHE3/9AT part is unused and in its original packaging.
Return procedure for TPSMC20AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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