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Vishay General Semiconductor - Diodes Division TPSMC20AHE3_B/I
- Part No.:
- TPSMC20AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC20AHE3_B/I.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,400
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Product details
Overview
TPSMC20AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge 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 clamps to 27.7 V at rated surge - deployed on power rails and signal lines of automotive ECUs and industrial sensor interfaces.
For engineers reviewing the TPSMC20AHE3_B/I datasheet, TPSMC20AHE3_B/I pinout, TPSMC20AHE3_B/I application, or TPSMC20AHE3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 185 °C junction rating, low clamping ratio (VC/VBR = 1.385), and compatibility with automated SMT assembly under J-STD-002/JESD 22-B102.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable breakdown characteristics across temperature and lifetime. Its 185 °C maximum junction temperature and MSL Level 1 rating support reflow soldering at 260 °C peak and operation in under-hood automotive environments.
The device delivers 1500 W peak pulse power per 10/1000 µs waveform with low incremental surge resistance and fast response time (<1 ns), enabling robust protection against ESD, lightning-induced transients, and inductive switching spikes on DC power inputs and analog sensor lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 19.0 / 20.0 / 21.0 V - ensures reliable conduction onset above normal operating voltage while avoiding false triggering |
| VWM | 17.1 V - maximum continuous reverse voltage before leakage exceeds 1 µA, defining safe operating margin |
| IPPM | 54.2 A - peak surge current capability at 10/1000 µs, directly supporting IEC 61000-4-5 Level 4 compliance |
| VC @ IPPM | 27.7 V - clamping voltage during full-rated surge, limiting downstream stress to protected ICs |
| TJ max. | +185 °C - enables use in high-temperature automotive and industrial control modules without derating |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal requirement |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including HTGB, HTRB, and temperature cycling per AEC standard |
Pinout & Package
TPSMC20AHE3_B/I is housed in the SMC (DO-214AB) package: a rectangular, surface-mount plastic case with matte tin-plated leads, cathode indicated by a color band. Thermal performance requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal per datasheet Fig. 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; connected to system ground or low-side reference | Provides return path for surge current; must be routed with low-inductance connection to minimize clamping overshoot |
| Cathode | Protected line connection; connected to input rail or signal line requiring transient suppression | Acts as the "hot" terminal where transient energy is shunted to ground; marked by visible band on package body |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-to-ground) in properly designed PCB layouts |
| 185 °C junction rating | Enables uninterrupted operation in engine control units, motor drives, and other high-ambient-temperature locations |
| AEC-Q101 qualified (HE3 suffix) | Confirms long-term reliability for automotive applications including extended temperature cycling and humidity testing |
| Low clamping ratio (VC/VBR = 1.385) | Minimizes overvoltage stress on downstream MOSFETs, microcontrollers, and analog front-ends during surge events |
| MSL Level 1, 260 °C peak reflow | Allows single-pass lead-free reflow without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in body control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between VIN and GND, activated within <1 ns of overvoltage event. Use Value: Limits voltage to ≤27.7 V during 54.2 A surges, preventing latch-up or permanent damage to 3.3 V/5 V logic supplies. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: Bidirectionally irrelevant - used unidirectionally to clamp positive-going transients on signal return path. Use Value: Maintains signal integrity by suppressing >1 kV EFT bursts while adding <1 pF capacitance at 0 V bias per datasheet Fig. 4. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Line Protection |
Use Scenario: Secondary-side overvoltage protection on 19 V laptop adapter outputs exposed to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after DC-DC converter output filter, clamping only during fault conditions. Use Value: Withstands 200 A non-repetitive forward surge (IFSM) and maintains <1 µA leakage at 17.1 V, minimizing standby power loss. |
Use Scenario: Surge suppression on -48 V DC feeder lines powering remote radio units in 5G base stations. IC Role / Device Role / Timing Role: Cathode tied to -48 V rail, anode to system ground - clamps negative transients relative to ground reference. Use Value: Delivers 1500 W pulse handling with 0.082 %/°C VBR tempco, ensuring stable clamping across -40 °C to +125 °C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20AHE3_A/H | Same VBR, VWM, VC; lower PPPM (600 W); SMB package (smaller footprint, lower thermal mass) | Limited to lower-energy transients (IEC 61000-4-5 Level 2); unsuitable for load dump or high-current inductive switching | Select when board space is constrained and surge threat level is moderate; verify thermal derating for repeated pulses. |
| TPSMC20AHM3_B/I | Identical electrical specs; halogen-free molding compound; same AEC-Q101 qualification; HM3 suffix replaces HE3 | No functional difference; required only where halogen-free compliance is mandated by OEM or regional regulation | Choose HM3 variant if RoHS + halogen-free material declaration is contractually required; otherwise HE3 is standard. |
Compared with SMBJ20AHE3_A/H and TPSMC20AHM3_B/I, the TPSMC20AHE3_B/I provides superior 1500 W surge capacity in the larger SMC package - critical for automotive load dump and industrial motor drive protection - while maintaining identical AEC-Q101 qualification and 185 °C operation.
Availability
TPSMC20AHE3_B/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom DC power distribution, and consumer power adapter designs requiring stable component supply, AEC-Q101 validation, and high-temperature reliability.
Supply support for TPSMC20AHE3_B/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-power, and automotive-grade solutions.
The TPSMC series belongs to Vishay's PAR® family of high-power transient suppressors, engineered specifically for demanding automotive and industrial applications where sustained high-temperature operation and repeatable surge immunity are mandatory.
FAQ
What is the maximum operating temperature for TPSMC20AHE3_B/I?
The TPSMC20AHE3_B/I has a maximum junction temperature (TJ) of +185 °C, verified per AEC-Q101 stress testing. This allows continuous operation in under-hood automotive environments and high-power industrial enclosures without thermal derating below ambient temperatures up to +125 °C, provided PCB copper area meets the 8.0 mm × 8.0 mm pad requirement per terminal.
Is TPSMC20AHE3_B/I compatible with lead-free reflow soldering?
Yes, TPSMC20AHE3_B/I is rated MSL Level 1 and qualified for peak reflow temperatures up to 260 °C per J-STD-020. The matte tin-plated leads comply with J-STD-002 and JESD 22-B102, and the HE3 suffix confirms whisker resistance per JESD 201 Class 2 - enabling direct placement into standard lead-free SMT processes without pre-baking.
Does TPSMC20AHE3_B/I meet AEC-Q101 requirements?
Yes, TPSMC20AHE3_B/I is explicitly AEC-Q101 qualified, as confirmed by Vishay's documentation (Document Number 88407, Revision 19-Jan-2024). The HE3 suffix denotes RoHS-compliant, AEC-Q101-qualified construction, covering tests including HTGB, HTRB, temperature cycling, and mechanical shock - validating suitability for automotive powertrain and chassis applications.
What is the clamping voltage of TPSMC20AHE3_B/I at its rated surge current?
The TPSMC20AHE3_B/I clamps to a maximum of 27.7 V at its rated peak pulse current (IPPM) of 54.2 A, measured using the standardized 10/1000 µs waveform. This value is guaranteed across production lots and temperature range, providing predictable overvoltage protection for downstream components such as microcontrollers, gate drivers, and analog sensors.
How does the TPSMC20AHE3_B/I differ from the TPSMC20AHM3_B/I variant?
The TPSMC20AHE3_B/I and TPSMC20AHM3_B/I share identical electrical specifications, AEC-Q101 qualification, and SMC package dimensions. The sole difference is material composition: HM3 uses halogen-free molding compound, while HE3 is RoHS-compliant but not halogen-free. Selection depends solely on regulatory or OEM material declarations - no electrical or thermal redesign is needed when substituting.
TPSMC20AHE3_B/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:
- 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/I FAQ
1.How can I place an order for TPSMC20AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC20AHE3_B/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 TPSMC20AHE3_B/I reliable?
The price and inventory of TPSMC20AHE3_B/I 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/I is usually 5 days.
3.What payment methods are accepted for TPSMC20AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC20AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC20AHE3_B/I?
TPSMC20AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC20AHE3_B/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 TPSMC20AHE3_B/I?
For technical support, including TPSMC20AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC20AHE3_B/I requirements.
6.How does Aetrix verify that TPSMC20AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMC20AHE3_B/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 TPSMC20AHE3_B/I meets industry standards.
7.What is the process for return or replacement of TPSMC20AHE3_B/I?
All TPSMC20AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC20AHE3_B/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 TPSMC20AHE3_B/I part is unused and in its original packaging.
Return procedure for TPSMC20AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMC20AHE3_B/I Tags
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