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Vishay General Semiconductor - Diodes Division TPSMC20AHE3_B/H
- Part No.:
- TPSMC20AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC20AHE3_B/H.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,166
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Product details
Overview
TPSMC20AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 20 V nominal breakdown voltage (VBR = 19.0–21.0 V at 1 mA), and 27.7 V maximum clamping voltage (VC) at 54.2 A peak pulse current. It operates from −65 °C to +185 °C and is AEC-Q101 qualified for automotive use.
For engineers reviewing the TPSMC20AHE3_B/H datasheet, TPSMC20AHE3_B/H pinout, TPSMC20AHE3_B/H application, or TPSMC20AHE3_B/H equivalent, this page delivers verified electrical parameters, thermal limits, clamping behavior under surge, RoHS-compliant and halogen-free material status (HE3 suffix), and real-world protection context for sensitive ICs and MOSFETs in high-reliability systems.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with junction passivation optimized for stable clamping under repetitive transients. Its unidirectional polarity enables forward-biased surge suppression on DC rails, and its 185 °C maximum junction temperature supports operation in under-hood automotive environments without derating penalties up to that limit.
The device meets MSL Level 1 per J-STD-020 (260 °C peak reflow), features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and exhibits low incremental surge resistance - critical for minimizing voltage overshoot during fast-rising ESD or inductive-switching events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 19.0 / 20.0 / 21.0 V at 1 mA - defines precise voltage threshold where clamping initiates, ensuring reliable protection before downstream IC damage. |
| VWM | 17.1 V - maximum continuous reverse working voltage; sets safe operating margin below breakdown for stable DC bias conditions. |
| VC @ IPPM | 27.7 V at 54.2 A - clamped voltage during full-rated 1500 W surge, directly limiting stress on protected circuitry. |
| PPPM | 1500 W (10/1000 μs) - peak pulse power handling capacity, validated for lightning and load-dump transients per ISO 7637-2. |
| TJ max. | +185 °C - enables deployment in high-temperature zones (e.g., engine control units) without thermal derating loss. |
| Polarity | Unidirectional - provides asymmetric protection ideal for positive-rail DC applications with defined ground reference. |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.13 mm × 6.22 mm footprint and 2.62 mm height, compatible with automated assembly. |
Pinout & Package
Package: SMC (DO-214AB), molded case with UL 94 V-0 flammability rating; cathode indicated by color band; matte tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to system ground or low-side return path; enables clamping when transient exceeds VWM on cathode side. |
| Cathode | Current exit point during forward conduction | Connected to protected line (e.g., 12 V rail); reverse-biased under normal operation, avalanches during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Reduces parameter drift over time and temperature, maintaining consistent VBR and leakage across 15+ year automotive lifetimes. |
| TJ = 185 °C capability | Eliminates need for external thermal derating in high-ambient environments such as powertrain ECUs or ADAS sensor modules. |
| 1500 W peak pulse power (10/1000 μs) | Withstands severe ISO 7637-2 Pulse 5a (load dump) surges without degradation when mounted on 8 mm × 8 mm copper pads. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including HTOL, TC, and HAST testing - required for ASIL-B/C subsystems. |
| Low incremental surge resistance | Minimizes dynamic impedance during fast transients (<1 ns rise time), reducing overshoot beyond VC during ESD events. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in engine control units against load dump transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and DC-DC input, clamping surges above 27.7 V within nanoseconds. Use Value: Prevents latch-up or permanent damage to automotive-grade microcontrollers and gate drivers exposed to 120 V/100 ms transients. | Use Scenario: Safeguarding analog front-end inputs of industrial pressure sensors connected to long cables in factory automation. IC Role / Device Role / Timing Role: TVS placed at connector interface to shunt induced switching noise from nearby motor drives or solenoids. Use Value: Maintains signal integrity by limiting transient-induced offset errors and preventing ADC saturation during 1 kV EFT bursts. |
| Consumer Device USB Power Line Protection | Telecom Base Station DC Input Protection |
Use Scenario: Securing 5 V USB Type-C power delivery paths in smart home hubs against hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Bidirectionally referenced unidirectional TVS (cathode to VBUS, anode to GND) suppressing ±15 kV contact ESD per IEC 61000-4-2. Use Value: Ensures USB PD controller remains functional after repeated ESD strikes without requiring reset or firmware recovery. | Use Scenario: Front-end protection of −48 V DC telecom rectifier outputs feeding baseband processing boards. IC Role / Device Role / Timing Role: TVS installed at power entry point to clamp lightning-induced surges coupled via AC mains or grounding loops. Use Value: Enables compliance with ITU-T K.20/21 immunity requirements while sustaining >100,000 surge cycles without parametric shift. |
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 peak pulse power (400 W), same VBR range (19.0–21.0 V), SMA package (smaller thermal mass) | Not suitable for ISO 7637-2 Pulse 5a; limited to IEC 61000-4-5 Level 3 (0.5 kV) | Select only for space-constrained consumer electronics with lower-energy threat profiles. |
| TPSMC20AHM3_B/H | Identical electrical specs; HM3 suffix denotes halogen-free construction (vs. HE3's RoHS-only), same AEC-Q101 qualification | No functional difference; chosen when halogen-free compliance is mandated by OEM material declarations | Direct material substitution where halogen content reporting is required; no layout or performance impact. |
Compared with SMAJ20A and TPSMC20AHM3_B/H, the TPSMC20AHE3_B/H uniquely balances 1500 W surge capacity, AEC-Q101 qualification, and RoHS compliance in the robust SMC package - making it the preferred choice for automotive and industrial DC rail protection where both energy handling and long-term reliability are non-negotiable.
Availability
TPSMC20AHE3_B/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply across extended production lifecycles.
Supply support for TPSMC20AHE3_B/H 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 and automotive-grade performance.
The TPSMC series was engineered specifically for high-energy transient suppression in harsh-environment applications - targeting automotive, industrial, and telecom systems where junction temperature stability and AEC-Q101 validation are mandatory.
FAQ
What is the maximum clamping voltage of the TPSMC20AHE3_B/H under full-rated surge conditions?
The TPSMC20AHE3_B/H has a maximum clamping voltage (VC) of 27.7 V when subjected to its rated peak pulse current of 54.2 A (10/1000 μs waveform). This value is measured per standard test conditions defined in the Vishay datasheet (Document Number: 88407), and ensures protected circuits remain below critical overvoltage thresholds during surge events. The TPSMC20AHE3_B/H maintains this clamping performance across its full operating temperature range.
Is the TPSMC20AHE3_B/H qualified for automotive applications?
Yes, the TPSMC20AHE3_B/H is AEC-Q101 qualified, as confirmed in the Vishay datasheet revision dated 19-Jan-2024. Its qualification covers high-temperature operation up to +185 °C, robustness against mechanical stress, and reliability under accelerated life testing - meeting requirements for use in engine control units, body electronics, and ADAS subsystems. The HE3 suffix explicitly denotes AEC-Q101 qualification and RoHS compliance.
What does the "HE3" suffix mean in TPSMC20AHE3_B/H?
The "HE3" suffix in TPSMC20AHE3_B/H indicates RoHS-compliant construction and AEC-Q101 qualification. It distinguishes this variant from non-automotive versions and confirms compliance with JEDEC JESD201 Class 2 whisker resistance, J-STD-020 MSL Level 1 reflow profile (260 °C peak), and Vishay's automotive reliability standards. The TPSMC20AHE3_B/H is not halogen-free; for that specification, the HM3 suffix variant is used.
Can the TPSMC20AHE3_B/H be used in bidirectional protection configurations?
No, the TPSMC20AHE3_B/H is unidirectional only, as stated in the Vishay datasheet. It provides clamping only for positive transients on the cathode side relative to anode (ground). For bidirectional protection, two TPSMC20AHE3_B/H devices must be connected in series opposition, or a dedicated bidirectional TVS (e.g., TPSMC20CA) should be selected. Using a single TPSMC20AHE3_B/H in reverse-biased configuration offers no clamping function.
What is the thermal resistance junction-to-ambient (RθJA) for the TPSMC20AHE3_B/H?
The Vishay datasheet for TPSMC20AHE3_B/H does not specify a numerical RθJA value. Thermal performance is instead characterized through derating curves (Figure 2) showing pulse power vs. initial junction temperature, and mounting recommendations: 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads at each terminal. Designers must use these empirical curves - not a fixed RθJA - to determine safe operating limits under varying ambient and pulse conditions. The TPSMC20AHE3_B/H relies on PCB copper area for heat dissipation rather than package-defined thermal metrics.
TPSMC20AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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 (SMC)
TPSMC20AHE3_B/H FAQ
1.How can I place an order for TPSMC20AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC20AHE3_B/H 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_B/H reliable?
The price and inventory of TPSMC20AHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC20AHE3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMC20AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC20AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC20AHE3_B/H?
TPSMC20AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC20AHE3_B/H 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_B/H?
For technical support, including TPSMC20AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC20AHE3_B/H requirements.
6.How does Aetrix verify that TPSMC20AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMC20AHE3_B/H 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_B/H meets industry standards.
7.What is the process for return or replacement of TPSMC20AHE3_B/H?
All TPSMC20AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC20AHE3_B/H, 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_B/H part is unused and in its original packaging.
Return procedure for TPSMC20AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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