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Vishay General Semiconductor - Diodes Division TPSMC18AHE3_A/I
- Part No.:
- TPSMC18AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC18AHE3_A/I.pdf
- Description:
- TVS DIODE 15.3VWM 25.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,291
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Product details
Overview
TPSMC18AHE3_A/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) - deployed in automotive ECUs, industrial motor drives, and sensor interface protection.
For engineers reviewing the TPSMC18AHE3_A/I datasheet, TPSMC18AHE3_A/I pinout, TPSMC18AHE3_A/I application, or TPSMC18AHE3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, 185 °C junction temperature rating, unidirectional polarity, low clamping ratio (VC/VBR = 1.40), and RoHS-compliant matte tin-plated terminals solderable per J-STD-002.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under repetitive surge stress. Its junction passivation enables operation up to TJ = 185 °C and meets MSL Level 1 (260 °C peak reflow), supporting high-reliability automotive and industrial PCB assembly.
The device responds within picoseconds to transients induced by inductive switching or ESD events. With 1.0 µA max reverse leakage at VWM and 0.080 %/°C temperature coefficient of VBR, it maintains precise voltage threshold stability across wide thermal ranges without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 17.1 / 18.0 / 18.9 V - defines reliable conduction onset under surge; ensures clamping initiates before downstream IC damage threshold. |
| VWM | 15.3 V - maximum continuous working voltage; allows safe operation on 12 V automotive rails with margin. |
| VC @ IPPM | 25.2 V - clamped voltage during 59.5 A transient; limits stress on protected MOSFET gate or MCU I/O. |
| PPPM | 1500 W - peak pulse power handling (10/1000 µs); sustains ISO 7637-2 Pulse 1 & 2a surges. |
| IFSM | 200 A - non-repetitive forward surge rating (8.3 ms half-sine); supports load-dump immunity in vehicle power systems. |
| TJ max | +185 °C - extended junction temperature capability; enables placement near heat sources in engine control modules. |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0; cathode indicated by color band; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during reverse-biased clamping | Connected to protected line (e.g., 12 V rail); conducts surge current toward ground when VLINE exceeds VBR. |
| Cathode | Current exit point during clamping; marked by band | Connected to system ground; establishes reference for clamping threshold and provides low-inductance return path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - required for ECU and ADAS module designs. |
| 1500 W peak pulse power (10/1000 µs) | Withstands high-energy transients from relay coil de-energization or alternator load dump without degradation. |
| Low clamping ratio (VC/VBR = 1.40) | Minimizes overvoltage exposure to protected devices - critical for 3.3 V or 5 V logic interfacing with 12 V domains. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow without moisture-induced popcorn failure or delamination. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs in engine control units against ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 2a (load dump). IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery rail and DC-DC input stage. Use Value: Limits transient voltage to ≤25.2 V during 59.5 A surges, preventing latch-up or gate oxide rupture in upstream regulators. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation PLCs from ESD and cable discharge events. IC Role / Device Role / Timing Role: Signal-line TVS connected between sensor output and microcontroller ADC input. Use Value: Sub-1 ns response time and 1.0 µA leakage at 15.3 V preserve signal integrity and measurement accuracy over full temperature range. |
| MOSFET Gate Driver Protection | Telecom Power Supply Input Protection |
Use Scenario: Safeguarding high-side N-channel MOSFET gates in motor drive half-bridges exposed to shoot-through or inductive kickback. IC Role / Device Role / Timing Role: Clamping diode tied between gate and source, referenced to local ground plane. Use Value: 25.2 V clamping prevents gate-source overvoltage beyond ±20 V absolute maximum rating of common logic-level MOSFETs. | Use Scenario: Front-end surge suppression on 48 V telecom power supplies subjected to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary-stage TVS on DC input bus prior to bulk capacitor and PFC controller. Use Value: 1500 W rating and 200 A IFSM enable compliance with Class III (2 kV line-earth) surge immunity requirements. |
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 VBR (18.0 V), lower PPPM = 600 W, SMB package (smaller footprint, lower thermal mass) | Lower energy handling limits use to sub-100 W surge environments; not recommended for automotive load dump. | Select only for space-constrained consumer electronics where surge severity is limited to IEC 61000-4-2 contact discharge. |
| 1.5KE18A | Same VBR, higher PPPM = 1500 W, axial-leaded DO-201 package (through-hole) | Requires manual or wave soldering; incompatible with automated SMT lines and high-density layouts. | Choose only for legacy through-hole designs or prototyping where rework tolerance outweighs production efficiency. |
Compared with SMBJ18A and 1.5KE18A, the TPSMC18AHE3_A/I uniquely combines AEC-Q101 qualification, SMC surface-mount compatibility, and 1500 W pulse rating - making it the only option qualified for volume production in automotive and industrial SMT assemblies requiring both reliability and high surge capacity.
Availability
TPSMC18AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial motor drives, and telecom power supply designs requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant transient protection.
Supply support for TPSMC18AHE3_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 high-reliability and automotive-grade performance.
The TPSMC series is part of Vishay's PAR® (Protection and Regulation) transient suppressor family, engineered specifically for robust, high-temperature-stable clamping in harsh automotive and industrial environments.
FAQ
What is the clamping voltage of the TPSMC18AHE3_A/I at its rated peak pulse current?
The TPSMC18AHE3_A/I has a maximum clamping voltage (VC) of 25.2 V when subjected to its peak pulse current (IPPM) of 59.5 A under a 10/1000 µs waveform. This value is measured per standard test conditions in the Vishay datasheet (Doc. #88407) and reflects the upper limit of voltage seen by protected circuitry during worst-case surge events. The TPSMC18AHE3_A/I maintains this clamping performance across its full operating temperature range due to its 0.080 %/°C VBR temperature coefficient.
Is the TPSMC18AHE3_A/I qualified for automotive applications?
Yes, the TPSMC18AHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101-qualified variants. It is rated for operation up to +185 °C junction temperature and meets MSL Level 1 reflow requirements (260 °C peak), making it suitable for under-hood automotive modules including engine control units and body electronics. The TPSMC18AHE3_A/I qualification covers temperature cycling, highly accelerated life testing, and surge endurance per AEC-Q101 stress test conditions.
What does the "HE3" suffix indicate in TPSMC18AHE3_A/I?
The "HE3" suffix in TPSMC18AHE3_A/I identifies the part as RoHS-compliant and AEC-Q101 qualified, with matte tin-plated leads that meet J-STD-002 and JESD 22-B102 solderability standards. The "A" denotes the revision code, and "I" specifies packaging in 13-inch plastic tape and reel (3500 units per reel). This suffix distinguishes it from non-automotive variants (e.g., base P/N without HE3) and confirms compliance with automotive reliability and environmental requirements. The TPSMC18AHE3_A/I is fully traceable to Vishay's qualified manufacturing flow.
Can the TPSMC18AHE3_A/I be used in bidirectional configurations?
No, the TPSMC18AHE3_A/I is unidirectional only, as explicitly stated in the Vishay datasheet. Its electrical characteristics - including breakdown voltage, clamping behavior, and leakage - are specified for reverse-bias operation only. For bidirectional transient suppression, a dedicated bidirectional TVS such as the TPSMC18CA must be selected. Using the TPSMC18AHE3_A/I in bidirectional circuits risks forward conduction during positive transients and failure to clamp negative excursions, compromising protection integrity.
What is the maximum reverse leakage current of the TPSMC18AHE3_A/I at its stand-off voltage?
The TPSMC18AHE3_A/I exhibits a maximum reverse leakage current (IR) of 1.0 µA at its stand-off voltage (VWM) of 15.3 V and ambient temperature of 25 °C. At elevated junction temperatures (TJ = 150 °C), leakage increases to a maximum of 10 µA - still well below thresholds that would affect low-power sensor or communication circuits. This low leakage ensures minimal quiescent power loss and preserves signal fidelity in precision analog paths. The TPSMC18AHE3_A/I's leakage performance is verified per ANSI/IEEE C62.35 test methods.
TPSMC18AHE3_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):
- 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 (SMCJ)
TPSMC18AHE3_A/I FAQ
1.How can I place an order for TPSMC18AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC18AHE3_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 TPSMC18AHE3_A/I reliable?
The price and inventory of TPSMC18AHE3_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 TPSMC18AHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMC18AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC18AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC18AHE3_A/I?
TPSMC18AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC18AHE3_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 TPSMC18AHE3_A/I?
For technical support, including TPSMC18AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC18AHE3_A/I requirements.
6.How does Aetrix verify that TPSMC18AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMC18AHE3_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 TPSMC18AHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMC18AHE3_A/I?
All TPSMC18AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC18AHE3_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 TPSMC18AHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMC18AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMC18AHE3_A/I Tags
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