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Vishay General Semiconductor - Diodes Division TPSMC18AHE3_B/H
- Part No.:
- TPSMC18AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC18AHE3_B/H.pdf
- Description:
- TVS DIODE 15.3VWM 25.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,944
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Product details
Overview
TPSMC18AHE3_B/H 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 on power and signal lines. It features a 18.0 V nominal breakdown voltage (VBR), 15.3 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 μs), 59.5 A peak pulse current (IPPM), and clamps to 25.2 V at rated surge current - deployed in automotive ECUs, industrial sensor interfaces, and DC power rails.
For engineers reviewing the TPSMC18AHE3_B/H datasheet, TPSMC18AHE3_B/H pinout, TPSMC18AHE3_B/H application, or TPSMC18AHE3_B/H equivalent, key selection criteria include its AEC-Q101 qualification, 185 °C maximum junction temperature, unidirectional polarity, low clamping ratio (VC/VBR = 1.40), and compatibility with reflow soldering per J-STD-020 MSL Level 1.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by reverse-biased avalanche breakdown. Its passivated anisotropic rectifier structure ensures stable leakage behavior up to 150 °C and enables reliable operation under repetitive surge stress without parameter drift.
Designed for automotive-grade reliability, the TPSMC18AHE3_B/H delivers 200 A non-repetitive forward surge current (IFSM) and maintains clamping performance across -65 °C to +185 °C junction temperature range, with a positive temperature coefficient of breakdown voltage (+0.080 %/°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 17.1 / 18.0 / 18.9 V - defines precise avalanche initiation threshold for predictable clamping onset |
| VWM | 15.3 V - maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 25.2 V - clamped voltage during 1500 W surge, limiting downstream IC stress |
| IPPM | 59.5 A - peak surge current capability with 10/1000 μs waveform on standard PCB pads |
| TJ max. | +185 °C - supports under-hood automotive placement and high-temperature industrial environments |
| Polarity | Unidirectional - protects against negative transients only; requires correct cathode orientation |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement |
Pinout & Package
TPSMC18AHE3_B/H uses the SMC (DO-214AB) package: a molded plastic case with two coplanar gull-wing leads, cathode indicated by a color band. Mounting requires 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal for full power rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink | Connected to protected line; conducts avalanche current to ground during overvoltage |
| Anode | Reference node | Typically tied to system ground or lower-potential rail; completes clamping path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements including HTGB, HTRB, and temperature cycling |
| 1500 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/5a surges and IEC 61000-4-5 Combination Wave (1.2/50 μs & 8/20 μs) |
| Low incremental surge resistance | Enables tight clamping with minimal voltage overshoot during fast-rising transients |
| MSL Level 1, 260 °C reflow compatible | Supports lead-free assembly without preconditioning or special handling |
| 185 °C junction rating | Permits operation in engine control modules and power converters with elevated ambient temperatures |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protects microcontroller I/O and CAN transceiver power pins from load dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed between VCC and GND, responding within <1 ns to clamp spikes above 15.3 V. Use Value: Limits transient voltage to ≤25.2 V, preventing latch-up or gate oxide damage in 3.3 V/5 V logic interfaces. | Use Scenario: Shields analog front-end inputs of pressure/temperature sensors in factory automation PLCs exposed to relay coil kickback. IC Role / Device Role / Timing Role: Unidirectional shunt protector on 24 V supply rail feeding op-amp signal chains. Use Value: Absorbs 1500 W surges while maintaining <1 μA leakage at 15.3 V, preserving sensor accuracy and offset stability. |
| DC Power Distribution Board | Telecom Base Station Power Supply |
Use Scenario: Installed on 24 V/48 V backplane power feeds to safeguard FPGA configuration memory and PMIC enable lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on intermediate bus, coordinated with upstream fuses and downstream ceramic capacitors. Use Value: Delivers 59.5 A peak current handling with 25.2 V clamping, reducing required bulk capacitance by 30 % versus higher-VC alternatives. | Use Scenario: Used on -48 V telecom rectifier output to suppress lightning-induced surges entering remote radio units. IC Role / Device Role / Timing Role: High-reliability unidirectional TVS mounted directly at board edge connector entry point. Use Value: Maintains <10 μA leakage at 150 °C ambient, ensuring long-term stability in sealed outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ18AHE3/A | Lower PPPM (600 W), same VBR (18.0 V), SMB package (smaller footprint, lower thermal mass) | Not rated for 185 °C TJ; limited to 150 °C max - unsuitable for under-hood use | Select when space-constrained layouts prioritize size over surge margin and temperature range |
| TPSMC18AHM3_B/H | Identical electrical specs; halogen-free molding compound and whisker-resistant terminations | Same AEC-Q101 qualification but meets additional RoHS/halogen-free compliance mandates | Choose for automotive Tier 1 programs requiring material declarations and JESD201 Class 2 whisker testing |
Compared with SMBJ18AHE3/A and TPSMC18AHM3_B/H, the TPSMC18AHE3_B/H uniquely balances 1500 W surge capacity, 185 °C operation, and AEC-Q101 qualification in the SMC package - making it optimal for high-reliability 12 V/24 V automotive and industrial power rail protection where thermal robustness and energy absorption are critical.
Availability
TPSMC18AHE3_B/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and telecom power supply hardening requiring stable component supply and long-term lifecycle support.
Supply support for TPSMC18AHE3_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 reliability and application-specific performance.
The TPSMC18AHE3_B/H belongs to Vishay's PAR® family of high-power surface-mount TVS diodes, engineered specifically for automotive and industrial environments demanding AEC-Q101 validation, extended temperature operation, and repeatable clamping under severe surge conditions.
FAQ
What is the clamping voltage of the TPSMC18AHE3_B/H at its rated peak pulse current?
The TPSMC18AHE3_B/H clamps to 25.2 V at its specified peak pulse current (IPPM) of 59.5 A under a 10/1000 μs waveform. This value is measured with the device mounted on 0.31″ × 0.31″ copper pads per terminal and reflects worst-case clamping performance used for downstream circuit stress analysis. The TPSMC18AHE3_B/H maintains this clamping level across its full operating temperature range.
Is the TPSMC18AHE3_B/H suitable for automotive applications?
Yes, the TPSMC18AHE3_B/H is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood automotive applications including engine control units, body control modules, and ADAS power supplies. Its construction meets JESD201 Class 2 whisker resistance and MSL Level 1 reflow requirements - all confirmed in Vishay's official qualification report for the TPSMC18AHE3_B/H.
What does the "HE3" suffix indicate in TPSMC18AHE3_B/H?
"HE3" denotes a RoHS-compliant, AEC-Q101-qualified version of the TPSMC18A with matte tin-plated leads, meeting J-STD-002 solderability and JESD22-B102 solder heat resistance standards. The "B/H" indicates packaging in 7″ diameter tape-and-reel format with 850 units per reel - a standard logistics configuration for automated SMT placement of the TPSMC18AHE3_B/H.
How does the TPSMC18AHE3_B/H compare to bidirectional TVS diodes?
The TPSMC18AHE3_B/H is unidirectional and protects only against negative transients relative to its anode reference. Unlike bidirectional variants, it exhibits lower leakage (<1 μA at 15.3 V) and higher surge capacity for the same package size. Use the TPSMC18AHE3_B/H when protecting DC power rails or single-polarity signal lines; select bidirectional versions only for AC-coupled or floating differential lines.
What is the maximum reverse leakage current of the TPSMC18AHE3_B/H at 150 °C?
At 150 °C junction temperature and rated stand-off voltage (15.3 V), the TPSMC18AHE3_B/H exhibits a maximum reverse leakage current of 10 μA - per Vishay's Electrical Characteristics table in Document Number 88407. This elevated leakage remains well below levels that would compromise power rail efficiency or sensor bias networks in high-temperature industrial deployments of the TPSMC18AHE3_B/H.
TPSMC18AHE3_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):
- 15.3V
- Voltage - Breakdown (Min):
- 17.1V
- Voltage - Clamping (Max) @ Ipp:
- 25.2V
- Current - Peak Pulse (10/1000µs):
- 59.5A
- 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 (SMC)
TPSMC18AHE3_B/H FAQ
1.How can I place an order for TPSMC18AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC18AHE3_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 TPSMC18AHE3_B/H reliable?
The price and inventory of TPSMC18AHE3_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 TPSMC18AHE3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMC18AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC18AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC18AHE3_B/H?
TPSMC18AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC18AHE3_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 TPSMC18AHE3_B/H?
For technical support, including TPSMC18AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC18AHE3_B/H requirements.
6.How does Aetrix verify that TPSMC18AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMC18AHE3_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 TPSMC18AHE3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMC18AHE3_B/H?
All TPSMC18AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC18AHE3_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 TPSMC18AHE3_B/H part is unused and in its original packaging.
Return procedure for TPSMC18AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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