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Vishay General Semiconductor - Diodes Division T4F10AHM3/H
- Part No.:
- T4F10AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
T4F10AHM3/H.pdf
- Description:
- LOW PROFILE OF 400W PAR TVS PROD
- Quantity:
- Payment:
- Shipping:
Inventory:21,095
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Product details
Overview
T4F10AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in the eSMP® Series, designed for automotive-grade circuit protection. It features a 10 V nominal breakdown voltage (VBR), 8.55 V stand-off voltage (VWM), 400 W peak pulse power (10/1000 μs), 14.5 V maximum clamping voltage at 27.6 A peak pulse current, and operates up to +185 °C junction temperature - deployed on sensor signal lines and MOSFET gate drivers in engine control units.
For engineers reviewing the T4F10AHM3/H datasheet, T4F10AHM3/H pinout, T4F10AHM3/H application, or T4F10AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, SMF (DO-219AB) package compatibility, unidirectional polarity with cathode band marking, and thermal robustness under high-reliability automotive transients.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for low-profile, high-temperature stability. Its junction passivation enables reliable operation at TJ = 185 °C and meets MSL Level 1 with 260 °C peak reflow profile.
The device delivers precise clamping performance with 0.064 %/°C temperature coefficient of VBR, 5.0 μA max reverse leakage at VWM, and 135 °C/W typical junction-to-ambient thermal resistance on FR4 PCB - critical for sustained surge immunity in compact automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 9.5 / 10.0 / 10.5 V - ensures consistent avalanche initiation across production lots and temperature range |
| VWM | 8.55 V - maximum continuous reverse voltage before leakage exceeds 5.0 μA at 25 °C |
| IPPM | 27.6 A - peak surge current capability with 10/1000 μs waveform, enabling protection against ISO 7637-2 Pulse 1/2a/5a |
| VC | 14.5 V - clamping voltage at IPPM, limiting downstream IC stress during transient events |
| PPPM | 400 W - peak pulse power rating defining energy-handling capacity per transient event |
| TJ max. | +185 °C - supports under-hood placement without derating in modern powertrain electronics |
| AEC-Q101 | Qualified - validated for automotive reliability including HTOL, TC, UHAST, and bond wire pull tests |
Pinout & Package
Package: SMF (DO-219AB), low-profile surface-mount case with matte tin-plated leads, UL 94 V-0 molding compound, and cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to protected line's ground or low-side reference; defines unidirectional clamping direction |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to protected signal line; color band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature operation | Junction rated to +185 °C - eliminates need for thermal derating in engine bay applications |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock |
| Low-profile SMF package | Height ≤ 1.3 mm - enables integration into space-constrained ADAS camera modules and radar PCBs |
| Halogen-free & RoHS-compliant | HM3 suffix confirms compliance with JESD201 Class 2 whisker resistance and environmental directives |
| Wave/reflow solderable | Compatible with standard SMT processes up to 260 °C peak, supporting high-volume automotive manufacturing |
Applications
| Automotive Sensor Protection | Powertrain Control Module |
|---|---|
Use Scenario: Protecting LIN bus and analog sensor inputs (e.g., crankshaft position, coolant temp) from load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp ESD and surge energy before reaching MCU input pins. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V sensor interface ICs while maintaining signal integrity below 14.5 V clamping threshold. |
Use Scenario: Safeguarding MOSFET gate drivers and microcontroller I/O in engine control units exposed to ISO 7637-2 Pulse 5a (load dump). IC Role / Device Role / Timing Role: Fast-response transient suppressor mounted directly at power input stage to limit voltage overshoot during alternator regulation failure. Use Value: Enables system-level compliance with automotive EMC standards without requiring oversized bulk capacitance or additional filtering stages. |
| ADAS Camera Interface | Electric Power Steering (EPS) |
Use Scenario: Shielding FPD-Link III or GMSL serial video interfaces from ESD and cable discharge events in rear-view cameras. IC Role / Device Role / Timing Role: Low-capacitance TVS placed inline with differential data pairs to suppress transients without distorting high-speed signals. Use Value: Maintains signal fidelity up to 3 Gbps while providing ±15 kV contact ESD protection per IEC 61000-4-2. |
Use Scenario: Protecting motor phase current sense amplifiers and H-bridge gate logic from commutation spikes in EPS torque assist circuits. IC Role / Device Role / Timing Role: Bidirectional clamping not required; unidirectional T4F10AHM3/H placed on low-side shunt resistor return path to absorb negative-going transients. Use Value: Reduces risk of false overcurrent detection and unintended motor shutdown during aggressive steering maneuvers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A | Same VBR range but SMA (DO-214AC) package; 100 W lower PPPM (300 W); RthJA = 160 °C/W | Larger footprint; less suitable for ultra-thin modules; lower thermal efficiency in confined spaces | Select when legacy SMA layout exists and peak surge energy is ≤ 300 W |
| SMF10A | Identical SMF (DO-219AB) package and 400 W rating, but non-AEC-Q101 qualified; VC = 16.0 V (higher clamping) | Not approved for automotive safety-critical systems; higher clamping increases stress on downstream ICs | Acceptable for industrial sensors where AEC-Q101 is not mandated and 1.5 V higher clamping is tolerable |
Compared with SMAJ10A and SMF10A, the T4F10AHM3/H delivers superior thermal performance (135 °C/W vs. 160 °C/W), tighter VC (14.5 V vs. 16.0 V), and full automotive qualification - making it the preferred choice for new AEC-Q101–compliant designs requiring minimal PCB area and high surge margin.
Availability
T4F10AHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, powertrain control modules, ADAS camera interfaces, and electric power steering systems requiring stable component supply across long production lifecycles.
Supply support for T4F10AHM3/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 high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The T4F10AHM3/H belongs to Vishay's eSMP® PAR® TVS family, engineered specifically for AEC-Q101–compliant transient suppression in harsh-environment automotive electronics with emphasis on thermal resilience and compact packaging.
FAQ
What is the clamping voltage of the T4F10AHM3/H at its rated peak pulse current?
The T4F10AHM3/H has a maximum clamping voltage (VC) of 14.5 V at its rated peak pulse current (IPPM) of 27.6 A with a 10/1000 μs waveform. This value is measured per JEDEC-standard test conditions and ensures predictable overvoltage limiting for protected ICs. The T4F10AHM3/H maintains this clamping performance across its full operating temperature range, supporting robust design in automotive environments.
Is the T4F10AHM3/H compatible with lead-free reflow soldering processes?
Yes, the T4F10AHM3/H is fully compatible with lead-free reflow soldering, rated for a maximum peak temperature of 260 °C per J-STD-020. Its matte tin-plated terminals meet JESD 22-B102 solderability requirements, and the HM3 suffix confirms compliance with JESD 201 Class 2 whisker resistance testing. The T4F10AHM3/H is also wave-solderable and qualified for MSL Level 1 handling.
Does the T4F10AHM3/H meet AEC-Q101 requirements for automotive applications?
Yes, the T4F10AHM3/H is explicitly AEC-Q101 qualified, as confirmed in Vishay's official documentation (Document Number: 87645, Revision: 14-Feb-2023). Qualification includes stress testing for high-temperature operating life, temperature cycling, unbiased highly accelerated stress test (UHAST), and mechanical shock - validating its suitability for automotive powertrain, chassis, and ADAS systems.
What is the polarity configuration of the T4F10AHM3/H?
The T4F10AHM3/H is a unidirectional TVS diode, meaning it conducts only in reverse breakdown mode to clamp positive transients relative to its cathode terminal. Polarity is marked by a color band on the cathode end, and the device must be oriented with cathode toward the protected line and anode toward ground. The T4F10AHM3/H is not suitable for bidirectional protection without external circuitry.
What package type does the T4F10AHM3/H use, and what are its key mechanical dimensions?
The T4F10AHM3/H uses the SMF (DO-219AB) package: a low-profile surface-mount case measuring 2.9 mm × 1.4 mm × 1.3 mm (L × W × H), with 0.85 mm lead pitch and UL 94 V-0 compliant molding compound. Its footprint matches JEDEC DO-219AB standard, and the HM3 suffix indicates halogen-free, RoHS-compliant construction. The T4F10AHM3/H's compact size supports high-density routing in automotive ECUs.
T4F10AHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-219AB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8.55V
- Voltage - Breakdown (Min):
- 9.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 27.6A
- Power - Peak Pulse:
- 400W
- 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-219AB (SMF)
T4F10AHM3/H FAQ
1.How can I place an order for T4F10AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for T4F10AHM3/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 T4F10AHM3/H reliable?
The price and inventory of T4F10AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T4F10AHM3/H is usually 5 days.
3.What payment methods are accepted for T4F10AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T4F10AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T4F10AHM3/H?
T4F10AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T4F10AHM3/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 T4F10AHM3/H?
For technical support, including T4F10AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T4F10AHM3/H requirements.
6.How does Aetrix verify that T4F10AHM3/H is sourced from the original manufacturer or authorized distributors?
All T4F10AHM3/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 T4F10AHM3/H meets industry standards.
7.What is the process for return or replacement of T4F10AHM3/H?
All T4F10AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with T4F10AHM3/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 T4F10AHM3/H part is unused and in its original packaging.
Return procedure for T4F10AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T4F10AHM3/H Tags
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