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Vishay General Semiconductor - Diodes Division TPSMC18HE3_A/H
- Part No.:
- TPSMC18HE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC18HE3_A/H.pdf
- Description:
- TVS DIODE 14.5VWM 26.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,767
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Product details
Overview
TPSMC18HE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 16.2 V minimum and 19.8 V maximum breakdown voltage (VBR), 14.5 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability. It protects MOSFETs and ICs against inductive switching transients in engine control units.
For engineers reviewing the TPSMC18HE3_A/H datasheet, TPSMC18HE3_A/H pinout, TPSMC18HE3_A/H application, or TPSMC18HE3_A/H equivalent, key selection criteria include clamping voltage (26.5 V at IPPM), junction temperature rating (−65 °C to +185 °C), unidirectional polarity, and MSL Level 1 moisture sensitivity compliance.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve low incremental surge resistance and fast response time under transient stress. Its 185 °C maximum junction temperature and AEC-Q101 qualification confirm suitability for under-hood automotive environments where thermal stability is critical.
The device operates exclusively in unidirectional mode, with cathode denoted by a color band. Clamping occurs at 26.5 V when subjected to its rated 56.6 A peak pulse current (IPPM) under 10/1000 µs waveform conditions, ensuring predictable overvoltage protection for sensitive downstream circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 16.2 V / 19.8 V - defines the voltage range at which avalanche conduction begins reliably at 1 mA test current |
| VWM | 14.5 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 26.5 V - clamped voltage during 56.6 A transient, limiting stress on protected ICs |
| PPPM | 1500 W - peak pulse power handling capability with 10/1000 µs waveform, per ANSI/IEEE C62.35 |
| TJ max. | +185 °C - enables operation in high-temperature automotive locations without derating |
| Polarity | Unidirectional - blocks reverse current only; requires correct orientation relative to protected circuit |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; safe for reflow up to 260 °C peak |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Cathode indicated by color band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point during clamping | Connected to lower-potential side of protected line (e.g., ground or return path) |
| Cathode | Reverse-biased terminal during normal operation | Connected to higher-potential side (e.g., supply rail or signal line); marked by color band |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR performance across temperature and lifetime, critical for automotive field reliability |
| 1500 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in 12 V automotive systems without degradation |
| AEC-Q101 qualification | Validates robustness for automotive applications including engine control, body electronics, and ADAS sensors |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for downstream ICs |
| TJ = −65 °C to +185 °C operating range | Supports placement near heat sources (e.g., power modules) without thermal derating |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Protecting microcontroller I/O lines and CAN transceiver power rails from load dump and inductive kickback in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Transient voltage suppressor placed directly at connector entry points and IC power pins. Use Value: Clamps transients to ≤26.5 V while sustaining 1500 W pulses, preventing latch-up or gate oxide damage in 3.3 V/5 V logic. | Use Scenario: Safeguarding gate drivers and feedback sensing circuits in variable-frequency drives exposed to relay switching noise and back-EMF. IC Role / Device Role / Timing Role: Unidirectional TVS mounted across DC bus inputs and isolated signal lines. Use Value: 185 °C junction rating allows placement near IGBT heatsinks; 1 µA leakage at 14.5 V avoids bias errors in precision analog sensing. |
| Telecom Power Supply Input | Consumer Appliance Mainboard Protection |
Use Scenario: Suppressing lightning-induced surges on AC-DC adapter input stages in base station power supplies. IC Role / Device Role / Timing Role: Primary-level TVS on bulk capacitor input, upstream of active rectification. Use Value: 200 A non-repetitive forward surge rating handles high-current surge events; MSL Level 1 ensures compatibility with automated SMT assembly. | Use Scenario: Shielding MCU reset lines and communication buses (e.g., I²C) in washing machine control boards from ESD and relay bounce. IC Role / Device Role / Timing Role: Localized TVS at microcontroller pin level, with short PCB trace routing. Use Value: Fast response time limits voltage overshoot to <10 ns; 1 µA leakage at VWM prevents false resets in low-power sleep modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ18A | DO-214AA (SMB) package; 1500 W rating; 17.1–18.9 V VBR; 15.3 V VWM; 25.2 V VC | Lower power density due to smaller SMB footprint; less thermal mass for sustained pulse handling | Preferred where board space is constrained and peak pulse energy is moderate |
| 1.5KE18A | Through-hole DO-201 package; 1500 W rating; same VBR/VC specs; higher IFSM (200 A) | Not suitable for automated SMT; incompatible with high-density layouts or reflow-only processes | Select only for legacy through-hole designs or prototyping with manual assembly |
Compared with SMBJ18A and 1.5KE18A, the TPSMC18HE3_A/H delivers identical electrical protection performance in a thermally superior DO-214AB package, supports automotive AEC-Q101 requirements, and enables high-volume SMT manufacturing without moisture sensitivity concerns.
Availability
TPSMC18HE3_A/H is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drive interfaces, and telecom power supply inputs requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for TPSMC18HE3_A/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 reliability and high-temperature operation.
The TPSMC series was engineered specifically for automotive and industrial transient suppression, targeting high-energy 10/1000 µs surge immunity in harsh thermal environments where standard TVS diodes fail.
FAQ
What is the breakdown voltage tolerance for TPSMC18HE3_A/H?
The TPSMC18HE3_A/H has a breakdown voltage (VBR) range of 16.2 V to 19.8 V at 1 mA test current, corresponding to ±10 % tolerance around the nominal 18 V rating. This tolerance is confirmed in the Electrical Characteristics table on page 2 of Vishay document 88407, revision 22-Jul-16. The "A" suffix in the part number denotes this ±10 % VBR tolerance grade. TPSMC18HE3_A/H maintains this specification across its full operating temperature range.
Is TPSMC18HE3_A/H compatible with lead-free reflow soldering?
Yes, TPSMC18HE3_A/H is fully compatible with lead-free reflow soldering. It meets J-STD-020 MSL Level 1 with a maximum peak reflow temperature of 260 °C, and its matte tin-plated terminals are solderable per J-STD-002 and JESD 22-B102. The HE3 suffix confirms compliance with JESD 201 Class 2 whisker testing. No pre-baking is required prior to reflow, simplifying manufacturing integration for TPSMC18HE3_A/H.
Does TPSMC18HE3_A/H support bidirectional transient suppression?
No, TPSMC18HE3_A/H is unidirectional only, as explicitly stated in the Features section of the Vishay datasheet. It conducts in reverse bias above VBR but blocks forward current beyond its 3.5 V forward voltage at 100 A. For bidirectional protection, a separate device such as the SMBJ18CA or a dual-diode configuration would be required. The cathode band marking on TPSMC18HE3_A/H must be oriented toward the higher-potential node for proper operation.
What is the maximum clamping voltage of TPSMC18HE3_A/H under surge conditions?
The maximum clamping voltage (VC) of TPSMC18HE3_A/H is 26.5 V, measured at its rated peak pulse current (IPPM) of 56.6 A using a 10/1000 µs waveform. This value is specified in the Electrical Characteristics table and represents the upper limit of voltage seen by protected circuitry during worst-case transient events. VC remains stable across temperature due to the device's passivated anisotropic rectifier structure, ensuring consistent protection behavior for TPSMC18HE3_A/H.
How does TPSMC18HE3_A/H differ from the standard TPSMC18 variant?
The TPSMC18HE3_A/H differs from the base TPSMC18 by three key qualifications: it carries the HE3 suffix indicating RoHS compliance and JESD 201 Class 2 whisker resistance, the "A" denotes ±10 % VBR tolerance (vs. ±5 % for non-A variants), and the "/H" specifies packaging in 7″ tape-and-reel (850 units). All electrical parameters-including VBR, VWM, VC, and PPPM-are identical between TPSMC18 and TPSMC18HE3_A/H. These distinctions make TPSMC18HE3_A/H suitable for automotive and high-reliability SMT production.
TPSMC18HE3_A/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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 14.5V
- Voltage - Breakdown (Min):
- 16.2V
- Voltage - Clamping (Max) @ Ipp:
- 26.5V
- Current - Peak Pulse (10/1000µs):
- 56.6A
- 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)
TPSMC18HE3_A/H FAQ
1.How can I place an order for TPSMC18HE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC18HE3_A/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 TPSMC18HE3_A/H reliable?
The price and inventory of TPSMC18HE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC18HE3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMC18HE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC18HE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC18HE3_A/H?
TPSMC18HE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC18HE3_A/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 TPSMC18HE3_A/H?
For technical support, including TPSMC18HE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC18HE3_A/H requirements.
6.How does Aetrix verify that TPSMC18HE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMC18HE3_A/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 TPSMC18HE3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMC18HE3_A/H?
All TPSMC18HE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC18HE3_A/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 TPSMC18HE3_A/H part is unused and in its original packaging.
Return procedure for TPSMC18HE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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