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Vishay General Semiconductor - Diodes Division TPSMC12AHE3_B/I
- Part No.:
- TPSMC12AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC12AHE3_B/I.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,390
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Product details
Overview
TPSMC12AHE3_B/I 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 12.0 V nominal breakdown voltage (VBR), 10.2 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 µs), 89.8 V clamping voltage at 27.3 A peak current, and operates up to +185 °C junction temperature - ideal for automotive power rail and sensor interface protection.
For engineers reviewing the TPSMC12AHE3_B/I datasheet, TPSMC12AHE3_B/I pinout, TPSMC12AHE3_B/I application, or TPSMC12AHE3_B/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal derating behavior, SMC package mechanical data, and direct alternatives with documented clamping and leakage differences.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced transients, and inductive switching spikes. Its unidirectional polarity and 10.2 V stand-off voltage allow integration on DC-biased lines without forward conduction during normal operation.
The device is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), supports MSL Level 1 reflow (260 °C peak), and maintains stable VBR over temperature with +0.070 %/°C coefficient - critical for automotive under-hood applications where thermal drift must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 11.4 / 12.0 / 12.6 V - ensures reliable triggering above system operating voltage while avoiding false clamping |
| VWM | 10.2 V - maximum continuous reverse voltage before leakage exceeds 2.0 µA, compatible with 12 V nominal systems |
| VC @ IPPM | 89.8 V - clamping voltage at 27.3 A peak pulse current, limiting downstream IC stress during 1500 W transients |
| PPPM | 1500 W - peak pulse power handling per 10/1000 µs waveform, sufficient for ISO 7637-2 Pulse 1 & 2b compliance |
| TJ max. | +185 °C - enables placement near hot components (e.g., power MOSFETs, engine control units) without derating loss |
| Leakage @ VWM | 2.0 µA at 25 °C - negligible standby current draw, preserving battery life in always-on automotive modules |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during clamping | Connected to protected line (e.g., 12 V rail); conducts surge current toward ground when VBR exceeded |
| Cathode | Current exit during clamping | Connected to system ground; forms low-impedance path to shunt transient energy away from sensitive loads |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in automotive load-dump and inductive switch-off events |
| 89.8 V clamping voltage at 27.3 A | Keeps protected ICs (e.g., CAN transceivers, microcontrollers) below absolute maximum ratings during surge |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| TJ = -65 °C to +185 °C | Supports operation in extreme environments such as engine compartments and industrial motor drives |
| MSL Level 1, 260 °C reflow | Enables standard SMT assembly without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in body control modules against ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 5a (load dump). IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and input filter capacitor to clamp transients before they reach PMICs and MCUs. Use Value: Limits voltage excursion to ≤89.8 V during 1500 W surges, preventing latch-up or permanent damage to downstream 3.3 V/5 V logic. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLCs exposed to relay coil kickback. IC Role / Device Role / Timing Role: TVS placed across differential signal pair (e.g., 4–20 mA loop) to absorb fast-rising transients without distorting low-level signals. Use Value: Sub-1 ns response time and 2.0 µA leakage preserve signal integrity and minimize offset error in precision measurement circuits. |
| Telecom DC Power Input Protection | Consumer Device USB Power Line Protection |
Use Scenario: Securing 48 V DC input of PoE-powered network switches against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary TVS on main DC input, coordinated with upstream fuse and secondary filtering to meet IEC 61000-4-5 Level 3. Use Value: 1500 W rating and 89.8 V clamping ensure compliance with telecom surge immunity standards while maintaining low standby loss. | Use Scenario: Adding transient immunity to 5 V USB VBUS line in portable speakers or smart home hubs connected to wall adapters. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between USB connector and port controller IC to suppress ESD and adapter switching noise. Use Value: 10.2 V VWM avoids conduction during normal 5 V operation; 2.0 µA leakage prevents battery drain in battery-backed devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A-E3/57T | Lower PPPM (400 W), higher VC (19.9 V @ 21.1 A), same SMC package and VWM (10.2 V) | Not suitable for ISO 7637-2 Pulse 5a; limited to lower-energy transients like ESD and contact discharge | Select TPSMC12AHE3_B/I when 1500 W surge handling is required; SMAJ12A-E3/57T only for cost-sensitive consumer designs with lower threat levels |
| 1.5KE12A | Through-hole DO-201 package, identical VBR/VWM, but higher VC (20.1 V @ 75 A) and larger footprint | Requires PCB redesign; not AEC-Q101 qualified; unsuitable for automated SMT production | Choose TPSMC12AHE3_B/I for automotive or high-volume SMT manufacturing; 1.5KE12A only for legacy through-hole prototyping or repair |
Compared with SMAJ12A-E3/57T and 1.5KE12A, TPSMC12AHE3_B/I delivers 3.75× higher peak pulse power in an AEC-Q101-qualified SMC package, enabling compact, high-reliability surge protection for modern automotive and industrial electronics without layout or qualification compromises.
Availability
TPSMC12AHE3_B/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPSMC12AHE3_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, MOSFETs, and protection devices with emphasis on high-reliability, high-temperature, and automotive-grade performance.
The TPSMC series belongs to Vishay's PAR® family of transient voltage suppressors, engineered specifically for robust, high-power surge immunity in harsh environments - including under-hood automotive, industrial motor controls, and outdoor telecom infrastructure.
FAQ
What is the clamping voltage of TPSMC12AHE3_B/I and how is it measured?
The clamping voltage (VC) of TPSMC12AHE3_B/I is 89.8 V, measured at its peak pulse current (IPPM) of 27.3 A using a 10/1000 µs waveform per IEC 61000-4-5. This value represents the maximum voltage seen across the device during a standardized surge event and directly determines the protection level afforded to downstream circuitry. TPSMC12AHE3_B/I achieves this clamping performance while maintaining low dynamic impedance, ensuring consistent voltage limiting across varying surge magnitudes.
Is TPSMC12AHE3_B/I AEC-Q101 qualified and what does that mean for automotive use?
Yes, TPSMC12AHE3_B/I is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's 88407 datasheet. This qualification validates the device for automotive applications through rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD robustness. TPSMC12AHE3_B/I is therefore approved for use in engine control units, body electronics, and ADAS modules where failure could impact vehicle safety or regulatory compliance.
What is the maximum operating temperature for TPSMC12AHE3_B/I and how does it affect design margin?
TPSMC12AHE3_B/I has a maximum junction temperature (TJ) of +185 °C, significantly exceeding standard commercial-grade TVS diodes. This allows placement in thermally demanding locations - such as near power converters or within engine compartments - without requiring additional thermal derating. At 150 °C ambient, TPSMC12AHE3_B/I retains full 1500 W pulse capability, providing substantial design margin for high-reliability automotive and industrial applications.
How does the leakage current of TPSMC12AHE3_B/I compare at elevated temperatures?
At 25 °C and VWM = 10.2 V, TPSMC12AHE3_B/I exhibits only 2.0 µA reverse leakage. At 150 °C and the same voltage, leakage increases to 10 µA - still well within acceptable limits for battery-powered or low-power sensor nodes. This controlled thermal drift is enabled by Vishay's passivated anisotropic rectifier technology and ensures stable standby performance across the full automotive temperature range.
What package type and mounting details apply to TPSMC12AHE3_B/I?
TPSMC12AHE3_B/I uses the SMC (DO-214AB) surface-mount package with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. It is supplied in 13" diameter plastic tape and reel (3500 pcs/reel, code "I"). The cathode is marked by a color band; recommended pad layout matches Vishay's 0.31" × 0.31" copper pad dimensions for optimal thermal dissipation and surge current handling.
TPSMC12AHE3_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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 89.8A
- 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)
TPSMC12AHE3_B/I FAQ
1.How can I place an order for TPSMC12AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC12AHE3_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 TPSMC12AHE3_B/I reliable?
The price and inventory of TPSMC12AHE3_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 TPSMC12AHE3_B/I is usually 5 days.
3.What payment methods are accepted for TPSMC12AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC12AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC12AHE3_B/I?
TPSMC12AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC12AHE3_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 TPSMC12AHE3_B/I?
For technical support, including TPSMC12AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC12AHE3_B/I requirements.
6.How does Aetrix verify that TPSMC12AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMC12AHE3_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 TPSMC12AHE3_B/I meets industry standards.
7.What is the process for return or replacement of TPSMC12AHE3_B/I?
All TPSMC12AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC12AHE3_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 TPSMC12AHE3_B/I part is unused and in its original packaging.
Return procedure for TPSMC12AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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