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Vishay General Semiconductor - Diodes Division T4F15AHM3/H
- Part No.:
- T4F15AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
T4F15AHM3/H.pdf
- Description:
- LOW PROFILE OF 400W PAR TVS PROD
- Quantity:
- Payment:
- Shipping:
Inventory:14,900
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Product details
Overview
T4F15AHM3/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 15.0 V nominal breakdown voltage (VBR), 12.8 V stand-off voltage (VWM), 400 W peak pulse power (10/1000 μs), 18.9 A peak pulse current, and clamps to 21.2 V at rated surge - deployed on signal lines of automotive sensor units and MOSFET gate drivers.
For engineers reviewing the T4F15AHM3/H datasheet, T4F15AHM3/H pinout, T4F15AHM3/H application, or T4F15AHM3/H equivalent, this page delivers verified electrical ratings, AEC-Q101 qualification status, SMF (DO-219AB) package dimensions, thermal derating curves, and direct alternatives for automotive ESD/surge protection design.
Technical Context
The T4F15AHM3/H employs passivated anisotropic rectifier technology with junction passivation optimized for high-reliability operation up to TJ = 185 °C. Its unidirectional architecture provides low-clamping-voltage response to positive-going transients while maintaining <1.0 μA reverse leakage at 12.8 V and 150 °C.
Rated for 400 W peak pulse power under 10/1000 μs waveform, it achieves 21.2 V clamping at 18.9 A IPPM with 0.076 %/°C temperature coefficient of VBR. Thermal resistance is 135–160 °C/W (junction-to-ambient) on FR4 PCB per JEDEC 51-2A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nominal) | 15.0 V - ensures reliable triggering above system operating voltage without false trips |
| VWM | 12.8 V - maximum continuous reverse voltage before leakage exceeds 1.0 μA at 25 °C |
| PPPM | 400 W - handles automotive load-dump and ISO 7637-2 pulse 5a surges without failure |
| IPPM | 18.9 A - peak surge current capability at 10/1000 μs waveform with 21.2 V clamping |
| TJ max | 185 °C - supports under-hood automotive placement with no derating up to 150 °C ambient |
| AEC-Q101 | Qualified - meets stress test requirements for automotive electronic components |
| Package | SMF (DO-219AB) - low-profile SMD footprint compatible with automated reflow and wave soldering |
Pinout & Package
Package: SMF (DO-219AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated terminals. Polarity indicated by cathode band. Molding compound meets UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path | Connected to ground or low-impedance reference; completes clamping loop during overvoltage events |
| Cathode | Protected line connection | Connected to I/O line or power rail being protected; blocks reverse current until VBR exceeded |
Key Features
| Feature | Design Value |
|---|---|
| 185 °C junction rating | Enables direct placement near hot engine-control units without thermal derating penalties |
| MSL Level 1 (260 °C peak) | Eliminates moisture sensitivity concerns; supports standard lead-free reflow profiles without baking |
| 0.076 %/°C VBR tempco | Ensures predictable clamping voltage shift across -65 °C to +185 °C operating range |
| 400 W 10/1000 μs rating | Meets ISO 16750-2 and SAE J1113-11 surge immunity requirements for 12 V systems |
| Low-profile DO-219AB outline | Reduces board space vs. SMA/SMB; maintains mechanical robustness for vibration-prone environments |
Applications
| Automotive Sensor Signal Protection | Power Supply Rail Clamping |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver input pins and analog sensor outputs (e.g., pressure, temperature) from ESD and load-switching transients in vehicle cabins. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between signal line and ground, acting as fast-acting voltage clamp during sub-100 ns transients. Use Value: Limits induced voltage to ≤21.2 V, preventing damage to 3.3 V or 5 V interface ICs while maintaining signal integrity below VWM. |
Use Scenario: Clamping 12 V battery rail against load-dump spikes (up to 35 V, 400 ms) and alternator overshoot in body control modules. IC Role / Device Role / Timing Role: Standoff protector parallel to downstream DC/DC converter input, absorbing energy before regulator overvoltage shutdown. Use Value: Withstands 400 W pulses without degradation, enabling single-device protection without external series impedance or timing delays. |
| MOSFET Gate Driver Protection | Infotainment System ESD Suppression |
Use Scenario: Safeguarding high-side/low-side gate drivers in motor control inverters from Miller-induced voltage spikes during switching transitions. IC Role / Device Role / Timing Role: Fast-response TVS placed between gate and source, limiting dv/dt-induced overshoot to safe levels for SiC/GaN driver ICs. Use Value: 21.2 V clamping ensures gate oxide remains below 25 V stress threshold even during 18.9 A surge events. |
Use Scenario: Shielding USB, HDMI, and audio jack interfaces in head units from human-body-model (HBM) ESD events during user interaction. IC Role / Device Role / Timing Role: Low-capacitance unidirectional suppressor on data lines, grounded via short trace to minimize stub inductance. Use Value: Sub-1.0 μA leakage at 12.8 V preserves signal fidelity; AEC-Q101 qualification confirms reliability in long-life consumer automotive systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/5A (Vishay) | Same VBR (15 V), but SMA package (DO-214AC); higher RthJA (190 °C/W); 400 W rating at 10/1000 μs | Larger footprint; less suitable for dense automotive PCBs; lower thermal performance in confined spaces | Select when legacy SMA layout exists or when higher surge repetition tolerance is needed |
| 1.5SMC15A (ON Semiconductor) | Identical VBR/VWM/PPPM; SMC (DO-214AB) package; AEC-Q101 qualified; RthJA = 150 °C/W | 0.3 mm taller than SMF; requires larger pad clearance; not rated for 185 °C TJ | Choose for cost-sensitive industrial designs where 150 °C max junction suffices and SMC footprint is acceptable |
Compared with SMAJ15A-E3/5A and 1.5SMC15A, the T4F15AHM3/H offers superior thermal performance (135–160 °C/W), smaller SMF footprint, and extended 185 °C junction rating - making it optimal for next-generation automotive modules requiring compact, high-temperature resilience.
Availability
T4F15AHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, power rail clamping, and MOSFET gate driver safeguarding requiring stable component supply, AEC-Q101 compliance, and high-temperature operational continuity.
Supply support for T4F15AHM3/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 T4F15AHM3/H belongs to Vishay's eSMP® PAR® TVS family, engineered specifically for AEC-Q101-compliant automotive transient suppression with enhanced thermal stability and low-profile packaging.
FAQ
What is the clamping voltage of the T4F15AHM3/H at its rated peak pulse current?
The T4F15AHM3/H clamps to 21.2 V at its specified peak pulse current of 18.9 A under a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 and ISO 7637-2 standards and reflects the maximum voltage seen by protected circuitry during worst-case surge events. The T4F15AHM3/H maintains this clamping performance across its full operating temperature range.
Is the T4F15AHM3/H qualified for automotive use?
Yes, the T4F15AHM3/H is AEC-Q101 qualified and rated for junction temperatures up to 185 °C - meeting stringent automotive reliability requirements for under-hood and cabin applications. Its HM3 suffix confirms halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance, fully documented in Vishay's qualification report for the T4F10A–T4F51A family.
What package does the T4F15AHM3/H use, and what are its key mechanical attributes?
The T4F15AHM3/H uses the SMF (DO-219AB) package: a low-profile surface-mount outline measuring 2.9 mm × 1.4 mm × 1.08 mm. It features matte tin-plated terminals compliant with J-STD-002 and JESD22-B102, UL 94 V-0 molding compound, and polarity marked by a cathode band. The footprint is optimized for automated assembly and high-vibration environments.
How does the T4F15AHM3/H compare to standard SMAJ-series TVS diodes in thermal performance?
The T4F15AHM3/H delivers significantly better thermal performance than SMAJ-series devices: its RthJA is 135–160 °C/W (JEDEC 51-2A, FR4), versus ~190 °C/W for SMAJ15A-E3/5A. This enables higher sustained surge handling in thermally constrained layouts. The T4F15AHM3/H also supports 185 °C TJ, exceeding the 150 °C limit of most SMAJ variants.
What is the reverse leakage current specification for the T4F15AHM3/H at elevated temperature?
At VWM = 12.8 V and TJ = 150 °C, the T4F15AHM3/H exhibits a maximum reverse leakage current of 5.0 μA. At 25 °C, leakage is ≤1.0 μA. This tightly controlled leakage ensures minimal power loss and signal distortion in always-on automotive subsystems such as CAN bus nodes and sensor interfaces.
T4F15AHM3/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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 18.9A
- 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)
T4F15AHM3/H FAQ
1.How can I place an order for T4F15AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for T4F15AHM3/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 T4F15AHM3/H reliable?
The price and inventory of T4F15AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T4F15AHM3/H is usually 5 days.
3.What payment methods are accepted for T4F15AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T4F15AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T4F15AHM3/H?
T4F15AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T4F15AHM3/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 T4F15AHM3/H?
For technical support, including T4F15AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T4F15AHM3/H requirements.
6.How does Aetrix verify that T4F15AHM3/H is sourced from the original manufacturer or authorized distributors?
All T4F15AHM3/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 T4F15AHM3/H meets industry standards.
7.What is the process for return or replacement of T4F15AHM3/H?
All T4F15AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with T4F15AHM3/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 T4F15AHM3/H part is unused and in its original packaging.
Return procedure for T4F15AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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