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Vishay General Semiconductor - Diodes Division TPSMC20HE3_A/I
- Part No.:
- TPSMC20HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC20HE3_A/I.pdf
- Description:
- TVS DIODE 16.2VWM 29.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,016
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Product details
Overview
TPSMC20HE3_A/I 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 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 on automotive ECUs, industrial sensor interfaces, and power supply input rails.
For engineers reviewing the TPSMC20HE3_A/I datasheet, TPSMC20HE3_A/I pinout, TPSMC20HE3_A/I application, or TPSMC20HE3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, 185 °C junction temperature rating, unidirectional polarity, low clamping ratio (VC/VBR ≈ 1.39), and compatibility with automated SMT assembly under J-STD-002/JESD 22-B102.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to achieve stable clamping performance across -65 °C to +185 °C operating range. Its 10/1000 µs waveform response delivers 1500 W surge capability with <1 ns intrinsic response time and low incremental surge resistance - critical for protecting MOSFET gates and IC I/O pins against ESD and load-switching transients.
The device is rated for 200 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and exhibits only 1.0 µA reverse leakage at VWM (17.1 V) and 10 µA at 150 °C, ensuring minimal standby power loss in always-on automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 19.0 / 20.0 / 21.0 V - defines precise voltage threshold where avalanche conduction begins; ensures consistent turn-on across production lots and temperature. |
| VWM | 17.1 V - maximum continuous reverse working voltage before leakage exceeds 1 µA; sets safe operating margin below breakdown. |
| VC @ IPPM | 27.7 V - clamped voltage during 54.2 A transient; determines protected circuit's maximum stress level during surge events. |
| PPPM | 1500 W - peak pulse power handling (10/1000 µs); validates robustness against ISO 7637-2 Pulse 1/2/5a and IEC 61000-4-5 surges. |
| TJ max. | +185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures without derating. |
| Polarity | Unidirectional - provides reverse-biased clamping only; suitable for DC power rail and signal line protection where polarity is fixed. |
| MSL Level | Level 1 (J-STD-020) - supports lead-free reflow up to 260 °C peak without moisture-induced damage. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, cathode indicated by molded band. Dimensions: 7.11 mm × 6.22 mm × 2.30 mm (L × W × H), with 8.0 mm × 8.0 mm copper pad recommendation per terminal for thermal and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction or surge clamping | Connected to protected circuit's lower-potential node (e.g., ground or return path); forms low-impedance shunt path during overvoltage. |
| Cathode | Current exit point during reverse-biased clamping | Connected to protected line (e.g., 12 V rail or signal trace); blocks normal operation but conducts when VIN > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTOL, TC, and UHAST - required for engine control, ADAS, and body electronics. |
| 185 °C junction rating | Enables direct placement near heat sources (e.g., power MOSFETs, DC-DC converters) without thermal derating or external heatsinking. |
| 1500 W peak pulse power | Withstands repeated ISO 7637-2 Pulse 5a (50 V, 500 ms) and IEC 61000-4-5 Combination Wave (1 kV/500 A) events without degradation. |
| Low clamping ratio (VC/VBR = 1.39) | Minimizes voltage overshoot on protected nodes - critical for safeguarding 3.3 V/5 V logic interfaces and analog sensor front-ends. |
| Matte tin-plated leads | Ensures solderability per J-STD-002 and JESD 22-B102; passes JESD 201 Class 2 whisker test for long-term interconnect integrity. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-supplied microcontroller inputs and CAN transceiver power pins against load-dump transients (ISO 7637-2 Pulse 5a). IC Role / Device Role: Unidirectional TVS placed between VBAT and GND, clamping surges above 20 V while maintaining low leakage at 13.5–16 V system voltage. Use Value: Prevents latch-up or permanent damage to MCU I/O cells and transceivers during alternator load dump, with no impact on normal operation due to 17.1 V VWM. | Use Scenario: Safeguarding 4–20 mA current-loop transmitter outputs and RS-485 data lines in factory automation PLC modules exposed to motor switching noise. IC Role / Device Role: TVS diode mounted across signal pair or supply-to-ground to divert fast-rising EFT bursts (IEC 61000-4-4) and lightning-induced surges (IEC 61000-4-5). Use Value: Limits induced voltage to ≤27.7 V during 54.2 A transients, preserving signal integrity and preventing receiver saturation or bus lockup. |
| Consumer Power Adapter Input Protection | Telecom DC Power Entry Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD controllers and PMICs. IC Role / Device Role: Clamping diode on 5 V/9 V/12 V output rails to absorb flyback spikes from transformer leakage inductance and MOSFET switching. Use Value: Maintains regulated output stability during transient overload conditions, avoiding false OVP shutdowns and enabling compact adapter designs with reduced bulk capacitance. | Use Scenario: Primary protection at -48 V DC telecom power entry points subject to lightning-induced common-mode surges on distribution lines. IC Role / Device Role: Unidirectional TVS connected between -48 V rail and chassis ground to clamp negative-going transients exceeding 20 V magnitude. Use Value: Provides fail-safe protection without affecting steady-state -48 V bias, meeting GR-1089-CORE immunity requirements for central office equipment. |
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 | Same VBR (19–21 V), lower PPPM (400 W), SMA package (smaller footprint, lower thermal mass) | Limited to lower-energy surges (e.g., ESD-only); unsuitable for ISO 7637-2 Pulse 5a or IEC 61000-4-5 testing | Select SMAJ20A only for space-constrained consumer PCBs where surge energy is strictly limited to IEC 61000-4-2 ESD (±15 kV air). |
| TPSMC20AHM3_A/I | Identical electrical specs; halogen-free molding compound, same RoHS/AEC-Q101 compliance | No functional difference; used where halogen-free material declaration is mandatory (e.g., EU public infrastructure tenders) | Choose TPSMC20AHM3_A/I when halogen-free certification is contractually required; otherwise TPSMC20HE3_A/I offers identical protection performance. |
Compared with SMAJ20A and TPSMC20AHM3_A/I, the TPSMC20HE3_A/I delivers full 1500 W surge capacity in the larger SMC package - making it the only option among the three qualified for high-energy automotive and industrial transients while maintaining AEC-Q101 reliability and 185 °C operation.
Availability
TPSMC20HE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor signal conditioning circuits, and telecom DC power entry protection requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TPSMC20HE3_A/I 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 developed specifically for demanding transient suppression in automotive power systems and industrial controls - combining AEC-Q101 qualification, 185 °C operation, and 1500 W surge capability in the rugged SMC package.
FAQ
What is the breakdown voltage tolerance of the TPSMC20HE3_A/I?
The TPSMC20HE3_A/I has a guaranteed breakdown voltage (VBR) range of 19.0 V (minimum) to 21.0 V (maximum) at 1 mA test current, with 20.0 V nominal. This ±5 % tolerance ensures predictable clamping onset across temperature and lifetime, critical for designing robust overvoltage margins in automotive and industrial power rails.
Is the TPSMC20HE3_A/I suitable for bidirectional transient protection?
No, the TPSMC20HE3_A/I is unidirectional only - it clamps reverse-biased transients but conducts forward current like a standard diode. For bidirectional protection (e.g., AC lines or differential data buses), a separate bidirectional TVS such as SMBJ20CA must be used; the TPSMC20HE3_A/I is intended exclusively for DC rail and single-polarity signal protection.
Does the TPSMC20HE3_A/I require a heatsink for 1500 W surge handling?
No heatsink is required for single-event 1500 W surge handling because energy dissipation occurs over microseconds (10/1000 µs waveform). Thermal design focuses on PCB copper pad area (recommended 8.0 mm × 8.0 mm per terminal) to manage short-duration junction heating; steady-state power dissipation is negligible due to sub-µA leakage at VWM.
What does the "HE3" suffix indicate in TPSMC20HE3_A/I?
The "HE3" suffix denotes RoHS-compliant construction with matte tin-plated leads and AEC-Q101 qualification. The "A/I" denotes packaging in 13-inch tape-and-reel format with 3500 units per reel - confirming full automotive-grade reliability validation and SMT-ready delivery configuration for the TPSMC20HE3_A/I.
How does the TPSMC20HE3_A/I perform at elevated temperatures?
The TPSMC20HE3_A/I maintains full specification compliance up to +185 °C junction temperature. Its VBR exhibits a positive temperature coefficient (+0.082 %/°C), meaning breakdown voltage increases linearly with temperature - ensuring higher clamping thresholds at high ambient, which prevents premature conduction in hot under-hood environments.
TPSMC20HE3_A/I 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_A/I FAQ
1.How can I place an order for TPSMC20HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC20HE3_A/I 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_A/I reliable?
The price and inventory of TPSMC20HE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC20HE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMC20HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC20HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC20HE3_A/I?
TPSMC20HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC20HE3_A/I 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_A/I?
For technical support, including TPSMC20HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC20HE3_A/I requirements.
6.How does Aetrix verify that TPSMC20HE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMC20HE3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of TPSMC20HE3_A/I?
All TPSMC20HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC20HE3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for TPSMC20HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMC20HE3_A/I Tags
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