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Vishay General Semiconductor - Diodes Division TPSMC18AHE3_B/I
- Part No.:
- TPSMC18AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC18AHE3_B/I.pdf
- Description:
- TVS DIODE 15.3VWM 25.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,836
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Product details
Overview
TPSMC18AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features 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 25.2 V maximum clamping voltage (VC) - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the TPSMC18AHE3_B/I datasheet, TPSMC18AHE3_B/I pinout, TPSMC18AHE3_B/I application, or TPSMC18AHE3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 185 °C junction temperature rating, low clamping ratio (VC/VBR = 1.40), and RoHS-compliant matte tin-plated terminals suitable for J-STD-002 soldering.
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 performance up to 150 °C and enables reliable operation under repetitive surge stress per IEC 61000-4-5.
Designed for high-reliability environments, the TPSMC18AHE3_B/I delivers 1500 W peak pulse power with 10/1000 µs waveform, maintains clamping voltage ≤25.2 V at 59.5 A, and supports surge current derating above 25 °C per Fig. 2 - all while meeting MSL Level 1 and JESD 201 Class 2 whisker resistance requirements.
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 repeatable clamping onset |
| VWM | 15.3 V - maximum continuous reverse voltage before leakage exceeds 1 µA, ensuring no false triggering in normal operation |
| VC @ IPPM | 25.2 V - clamped voltage during 59.5 A transient, limiting downstream device stress to safe levels |
| PPPM | 1500 W - peak transient energy absorption capability with 10/1000 µs waveform, critical for IEC 61000-4-5 compliance |
| TJ max. | +185 °C - extended junction temperature rating enabling use in under-hood automotive and high-ambient industrial environments |
| Polarity | Unidirectional - protects against positive transients only; cathode band denotes terminal polarity for correct PCB orientation |
| Leakage @ VWM | ≤1.0 µA at 25 °C - ensures minimal standby power loss and signal integrity in low-current sensor circuits |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded epoxy case meeting UL 94 V-0 flammability rating; dimensions 7.11 mm × 6.22 mm × 2.90 mm (L × W × H); matte tin-plated leads, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point for unidirectional clamping path | Connected to ground or low-impedance return path; completes surge current loop during transient events |
| Cathode | High-side connection point; marked with color band | Connected to protected line (e.g., 12 V rail or signal trace); avalanche conduction occurs when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per AEC standard |
| 1500 W peak pulse power | Withstands high-energy transients such as load dump (ISO 7637-2) and ESD-induced surges without degradation |
| 185 °C maximum junction temperature | Enables placement near heat sources (e.g., power converters) without thermal derating penalties in engine control units |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time), improving protection margin for sensitive ICs |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without moisture-related popcorning or delamination risks |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from ISO 7637-2 load dump pulses and alternator switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between power input and ground, activated within <1 ns of overvoltage event. Use Value: Limits voltage to ≤25.2 V during 59.5 A transients, preventing damage to downstream DC/DC controllers and microcontrollers rated for 36 V absolute max. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation systems. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) clamping diode on signal line, positioned adjacent to connector entry point. Use Value: Maintains signal fidelity during normal operation while suppressing ±8 kV contact ESD per IEC 61000-4-2 with sub-25 V clamping, preserving ADC accuracy. |
| Consumer Power Adapter Input Stage | Telecom DC Power Distribution |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters subjected to lightning-induced surges on mains-connected outputs. IC Role / Device Role / Timing Role: Standoff-rated (15.3 V) TVS on +5 V or +12 V output rail, absorbing residual transients escaping primary-side protection. Use Value: Provides 1500 W surge capacity with 25.2 V clamping, ensuring connected devices (e.g., USB peripherals) survive 10/1000 µs surges exceeding 1 kV. | Use Scenario: Protecting -48 V telecom power distribution boards from hot-swap transients and relay bounce in central office equipment. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to system ground, installed at PSE/PD interface points in PoE infrastructure. Use Value: Withstands 200 A non-repetitive forward surge (IFSM) and maintains stable VBR across -65 °C to +185 °C, supporting outdoor cabinet deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18A | Lower peak pulse power (400 W), same SMC package, identical VBR range but higher VC (29.2 V) | Not AEC-Q101 qualified; limited to commercial-grade consumer/industrial use | Select SMAJ18A only if surge energy requirements are ≤400 W and automotive qualification is unnecessary |
| TPSMC18AHM3_B/I | Halogen-free variant; identical electrical specs, same AEC-Q101 qualification and RoHS compliance | Required for halogen-free BOM mandates in EU automotive Tier 1 supply chains | Choose TPSMC18AHM3_B/I when material compliance requires halogen-free molding compound per IEC 61249-2-21 |
Compared with SMAJ18A and TPSMC18AHM3_B/I, the TPSMC18AHE3_B/I offers superior 1500 W surge handling and automotive qualification while maintaining compatibility with standard SMC footprints - making it optimal for high-energy, mission-critical protection where reliability and regulatory alignment are mandatory.
Availability
TPSMC18AHE3_B/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC distribution requiring stable component supply and long-term lifecycle support.
Supply support for TPSMC18AHE3_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 reliability, precision, and high-temperature performance.
The TPSMC series belongs to Vishay's PAR® family of high-power TVS diodes, engineered specifically for robust transient suppression in automotive, industrial, and telecom applications where AEC-Q101 qualification and 185 °C operation are required.
FAQ
What is the clamping voltage of the TPSMC18AHE3_B/I at its rated peak pulse current?
The TPSMC18AHE3_B/I has a maximum clamping voltage (VC) of 25.2 V when subjected to its rated peak pulse current of 59.5 A using a 10/1000 µs waveform. This value is measured per standard test conditions defined in the datasheet and reflects the upper limit of voltage seen by protected circuitry during worst-case transient events. The TPSMC18AHE3_B/I maintains this clamping performance across its full operating temperature range, supporting design margin calculations for downstream components.
Is the TPSMC18AHE3_B/I qualified for automotive applications?
Yes, the TPSMC18AHE3_B/I is AEC-Q101 qualified, as confirmed by Vishay's official documentation and ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101 qualified variants. This qualification covers stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing - validating the TPSMC18AHE3_B/I for use in engine control modules, body electronics, and ADAS subsystems.
What does the "HE3" suffix indicate in TPSMC18AHE3_B/I?
The "HE3" suffix in TPSMC18AHE3_B/I identifies the part as RoHS-compliant and AEC-Q101 qualified, with matte tin-plated leads meeting J-STD-002 solderability standards and passing JESD 201 Class 2 whisker resistance testing. The "B" denotes revision level, and "I" specifies packaging in 13-inch tape-and-reel format with 3500 units per reel - all consistent with Vishay's standardized ordering nomenclature for the TPSMC family.
Can the TPSMC18AHE3_B/I be used in bidirectional protection configurations?
No, the TPSMC18AHE3_B/I is unidirectional only, as explicitly stated in the Vishay datasheet. It conducts in reverse bias above VBR and blocks forward current up to 3.5 V at 100 A. For bidirectional protection, a separate device such as a symmetric TVS array or back-to-back configuration would be required - the TPSMC18AHE3_B/I itself does not support negative transient suppression without external circuitry.
What is the maximum operating temperature for the TPSMC18AHE3_B/I junction?
The TPSMC18AHE3_B/I has a maximum junction temperature (TJ) rating of +185 °C, verified per Vishay's characterization and included in the Absolute Maximum Ratings table. This allows sustained operation in high-ambient environments such as under-hood automotive locations or enclosed industrial power supplies, and supports derated surge performance up to this limit per Figure 2 in the datasheet.
TPSMC18AHE3_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):
- 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/I FAQ
1.How can I place an order for TPSMC18AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC18AHE3_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 TPSMC18AHE3_B/I reliable?
The price and inventory of TPSMC18AHE3_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 TPSMC18AHE3_B/I is usually 5 days.
3.What payment methods are accepted for TPSMC18AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC18AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC18AHE3_B/I?
TPSMC18AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC18AHE3_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 TPSMC18AHE3_B/I?
For technical support, including TPSMC18AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC18AHE3_B/I requirements.
6.How does Aetrix verify that TPSMC18AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMC18AHE3_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 TPSMC18AHE3_B/I meets industry standards.
7.What is the process for return or replacement of TPSMC18AHE3_B/I?
All TPSMC18AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC18AHE3_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 TPSMC18AHE3_B/I part is unused and in its original packaging.
Return procedure for TPSMC18AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMC18AHE3_B/I Tags
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