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Vishay General Semiconductor - Diodes Division TPSMC18HE3_A/I
- Part No.:
- TPSMC18HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC18HE3_A/I.pdf
- Description:
- TVS DIODE 14.5VWM 26.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,858
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Product details
Overview
TPSMC18HE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 1500 W peak pulse power (10/1000 μs), 16.2–19.8 V breakdown voltage (VBR), and 14.5 V stand-off voltage (VWM). It protects MOSFETs and ICs against inductive switching transients in automotive powertrain control modules.
For engineers reviewing the TPSMC18HE3_A/I datasheet, TPSMC18HE3_A/I pinout, TPSMC18HE3_A/I application, or TPSMC18HE3_A/I equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, clamping behavior at 56.6 A IPPM, thermal derating above 25 °C, and reel packaging details (13" tape, 3500 pcs).
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable junction operation up to 185 °C, enabling use in under-hood automotive environments. Its unidirectional polarity and low incremental surge resistance ensure rapid clamping response (<1 ns) during ESD or load-dump events.
The device meets J-STD-020 MSL Level 1 with 260 °C reflow peak and passes JESD201 Class 2 whisker testing. Clamping voltage is specified at 26.5 V (max) when subjected to 56.6 A peak pulse current per 10/1000 μs waveform.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 16.2 V / 19.8 V - defines minimum voltage at which device enters avalanche conduction; ensures reliable turn-on before system damage |
| VWM | 14.5 V - maximum continuous reverse working voltage; must exceed normal circuit operating voltage to prevent leakage |
| IPPM | 56.6 A - peak pulse current capability at 10/1000 μs; determines surge energy handling without failure |
| VC (max) | 26.5 V - clamped voltage at IPPM; limits downstream voltage stress on protected ICs or MOSFETs |
| PPPM | 1500 W - peak pulse power rating; quantifies transient energy absorption capacity under standardized waveform |
| TJ max. | +185 °C - maximum junction temperature; supports high-reliability operation in engine control units and ADAS sensors |
| Polarity | Unidirectional - blocks reverse current only; requires correct orientation relative to protected line polarity |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode indicated by color band. Dimensions: 7.11 mm × 6.22 mm × 2.41 mm (L × W × H). Matte tin-plated leads, RoHS-compliant, AEC-Q101 qualified.
| 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 | Avalanche conduction terminal | 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 185 °C operation and long-term reliability under thermal cycling in automotive under-hood locations |
| 1500 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1 and Pulse 2b transients without degradation in 12 V systems |
| AEC-Q101 qualification | Validated for automotive-grade production use including temperature cycling, humidity bias, and mechanical shock tests |
| MSL Level 1, 260 °C peak reflow | Supports standard SMT assembly without moisture sensitivity concerns or baking requirements |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., relay coil de-energization) |
Applications
| Automotive Powertrain Control | Industrial Motor Drive Protection |
|---|---|
Use Scenario: Protecting gate drivers and microcontrollers in 12 V engine control units exposed to alternator load dump and inductive kickback. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across power input rails or MOSFET gate-source terminals. Use Value: Limits clamped voltage to ≤26.5 V during 56.6 A surges, preventing latch-up or oxide breakdown in 3.3 V/5 V logic devices. | Use Scenario: Safeguarding IGBT gate drivers in variable-frequency drives subject to switching noise and back-EMF spikes. IC Role / Device Role / Timing Role: Unidirectional TVS connected between gate and emitter to clamp Miller-induced overvoltage. Use Value: Fast response time and low dynamic impedance reduce gate oscillation risk during high-dI/dt switching transitions. |
| Automotive Body Electronics | Telecom Power Interface |
Use Scenario: Shielding LIN bus transceivers and door module MCUs from battery line transients during jump-start or relay switching. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 14.5 V) placed inline with 12 V supply to LIN node. Use Value: Withstands >1000 μA leakage at 14.5 V while clamping to 26.5 V, preserving bus signal integrity during ISO 16750-2 pulses. | Use Scenario: Protecting DC power inputs of base station remote radio units from lightning-induced surges on outdoor power feeds. IC Role / Device Role / Timing Role: Primary-level TVS on 24 V or 48 V DC input, upstream of DC-DC converters. Use Value: 1500 W rating handles 10/1000 μs surges per IEC 61000-4-5 Level 4, reducing need for multi-stage protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ18A | Same VWM (14.5 V), but lower PPPM (600 W); DO-214AA (SMB) package, smaller footprint | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a load dump | Select when board space is constrained and surge energy does not exceed 600 W |
| TPSMC18AHE3_A/I | Narrower VBR tolerance (±5 % vs. ±10 %); tighter 17.1–18.9 V range; same package and ratings | Better consistency in clamping threshold across production lots; preferred for safety-critical nodes | Choose for AEC-Q101-compliant designs requiring tighter parametric control |
Compared with SMBJ18A and TPSMC18AHE3_A/I, the TPSMC18HE3_A/I offers optimal balance of 1500 W surge capacity, DO-214AB thermal mass, and cost-effective ±10 % VBR tolerance for mainstream automotive and industrial protection.
Availability
TPSMC18HE3_A/I is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive protection, and telecom power interface applications requiring stable component supply, AEC-Q101 compliance, and high-temperature reliability.
Supply support for TPSMC18HE3_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 automotive, industrial, and computing applications.
The TPSMC series is designed specifically for high-energy transient suppression in harsh-environment automotive systems, combining AEC-Q101 qualification, 185 °C junction capability, and robust DO-214AB packaging.
FAQ
What is the maximum clamping voltage of the TPSMC18HE3_A/I at its rated peak pulse current?
The TPSMC18HE3_A/I has a maximum clamping voltage (VC) of 26.5 V when subjected to its rated peak pulse current (IPPM) of 56.6 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components experience limited overvoltage stress during transient events. The TPSMC18HE3_A/I maintains this clamping performance across its full operating temperature range.
Is the TPSMC18HE3_A/I suitable for automotive under-hood applications?
Yes, the TPSMC18HE3_A/I is explicitly qualified to AEC-Q101 and rated for junction temperatures up to +185 °C, making it suitable for under-hood automotive applications such as engine control units and transmission control modules. Its DO-214AB package provides sufficient thermal mass, and its passivated anisotropic rectifier technology ensures stability under thermal cycling. The TPSMC18HE3_A/I is designed for this environment and listed in Vishay's automotive-grade product portfolio.
What does the "HE3_A/I" suffix indicate in TPSMC18HE3_A/I?
The "HE3" suffix denotes RoHS-compliant construction and JESD201 Class 2 whisker resistance; "A" indicates ±10 % VBR tolerance; "I" specifies 13-inch tape-and-reel packaging with 3500 units per reel. This full suffix confirms the TPSMC18HE3_A/I meets automotive reliability standards and is configured for high-volume SMT assembly. No other interpretation of the suffix applies to the TPSMC18HE3_A/I.
How does the TPSMC18HE3_A/I compare to bidirectional TVS diodes in circuit protection?
The TPSMC18HE3_A/I is unidirectional and intended for DC line protection where polarity is fixed-such as 12 V battery rails or gate drive supplies. Unlike bidirectional variants, it blocks reverse current only and conducts avalanche current in one direction. This gives the TPSMC18HE3_A/I lower leakage at VWM and better clamping efficiency for polarized systems. Bidirectional alternatives require different VBR definitions and are not drop-in replacements for the TPSMC18HE3_A/I.
What is the standoff voltage (VWM) and why is it critical for TPSMC18HE3_A/I placement?
The TPSMC18HE3_A/I has a standoff voltage (VWM) of 14.5 V, meaning it remains non-conductive below this reverse voltage. This value must exceed the maximum steady-state voltage of the protected line-e.g., 13.5 V nominal 12 V systems-to avoid leakage or thermal runaway. Proper VWM selection ensures the TPSMC18HE3_A/I stays inactive during normal operation yet triggers reliably during transients exceeding 16.2 V (VBR min). Misalignment here compromises protection or reliability.
TPSMC18HE3_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):
- 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/I FAQ
1.How can I place an order for TPSMC18HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC18HE3_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 TPSMC18HE3_A/I reliable?
The price and inventory of TPSMC18HE3_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 TPSMC18HE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMC18HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC18HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC18HE3_A/I?
TPSMC18HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC18HE3_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 TPSMC18HE3_A/I?
For technical support, including TPSMC18HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC18HE3_A/I requirements.
6.How does Aetrix verify that TPSMC18HE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMC18HE3_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 TPSMC18HE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMC18HE3_A/I?
All TPSMC18HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC18HE3_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 TPSMC18HE3_A/I part is unused and in its original packaging.
Return procedure for TPSMC18HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMC18HE3_A/I Tags
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