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Vishay General Semiconductor - Diodes Division T4F16AHM3/H
- Part No.:
- T4F16AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
T4F16AHM3/H.pdf
- Description:
- LOW PROFILE OF 400W PAR TVS PROD
- Quantity:
- Payment:
- Shipping:
Inventory:20,990
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Product details
Overview
T4F16AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in the eSMP® Series, designed for automotive-grade overvoltage protection of signal lines and power rails. It features a 16.0 V nominal breakdown voltage (VBR), 13.6 V stand-off voltage (VWM), 400 W peak pulse power (10/1000 µs), 22.0 V maximum clamping voltage at 17.8 A, and AEC-Q101 qualification for under-hood sensor interfaces.
For engineers reviewing the T4F16AHM3/H datasheet, T4F16AHM3/H pinout, T4F16AHM3/H application, or T4F16AHM3/H equivalent, key selection criteria include its SMF (DO-219AB) package compatibility, 185 °C junction temperature rating, unidirectional polarity with cathode band marking, and suitability for high-reliability automotive transients induced by inductive load switching.
Technical Context
The T4F16AHM3/H employs passivated anisotropic rectifier technology optimized for low-leakage, stable clamping under repetitive surge stress. Its junction passivation enables operation up to TJ = 185 °C and compliance with MSL Level 1 (260 °C peak reflow).
It delivers precise transient suppression with a defined 10/1000 µs waveform response, where clamping occurs at ≤22.0 V when subjected to 17.8 A peak pulse current - critical for protecting downstream MOSFETs and automotive microcontrollers without false triggering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nominal) | 16.0 V - ensures reliable conduction onset above system operating voltage while avoiding nuisance tripping |
| VWM | 13.6 V - maximum continuous reverse voltage the device blocks during normal operation |
| VC @ IPPM | 22.0 V - clamping voltage at 17.8 A peak pulse, defining worst-case stress on protected ICs |
| PPPM | 400 W - peak transient energy absorption capability per 10/1000 µs standard waveform |
| TJ max. | 185 °C - enables use in high-temperature automotive environments such as engine control units |
| Polarity | Unidirectional - provides reverse-biased surge protection only, matching DC-biased signal line topology |
| AEC-Q101 | Qualified - verified reliability for automotive electronic systems per stress test requirements |
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 clamping | Connected to protected circuit's ground or low-side reference; defines unidirectional conduction path |
| Cathode | Current exit terminal during clamping | Marked by color band; connected to line being protected (e.g., sensor supply rail or CAN signal) |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Enables stable leakage performance and long-term reliability at 185 °C junction temperature |
| SMF (DO-219AB) footprint | Compatible with industry-standard 2.9 mm × 1.3 mm layout; supports automated placement and wave/reflow soldering |
| 10/1000 µs waveform rating | Validated 400 W surge handling per IEC 61000-4-5 Level 4 lightning immunity testing |
| Low IRMS leakage | ≤1.0 µA at VWM and 25 °C ensures minimal power loss in always-on automotive modules |
| Halogen-free & RoHS | HM3 suffix confirms compliance with environmental regulations and JESD201 Class 2 whisker resistance |
Applications
| Automotive Sensor Protection | Power Rail Transient Suppression |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control modules exposed to load-dump and inductive kickback. IC Role / Device Role / Timing Role: TVS diode placed between sensor signal line and ground to clamp transients before reaching ADC input or signal conditioner. Use Value: Prevents sensor signal corruption and microcontroller reset events by limiting voltage to ≤22.0 V during 17.8 A surges. | Use Scenario: Safeguarding 12 V battery-fed subsystems (e.g., body control modules) against ISO 7637-2 pulse 1, 2a, and 5a transients. IC Role / Device Role / Timing Role: Unidirectional TVS connected across input rail and chassis ground to absorb negative-going spikes and positive load-dump overshoot. Use Value: Maintains system uptime by preventing overvoltage damage to LDOs and PMICs rated for ≤28 V absolute maximum. |
| Infotainment Interface Protection | ADAS Camera Power Line Guarding |
Use Scenario: Shielding LVDS or FPD-Link III data lines in head-unit displays from ESD and board-level coupling noise. IC Role / Device Role / Timing Role: Low-capacitance TVS placed inline on differential pairs to suppress fast transients without distorting signal integrity. Use Value: Ensures uninterrupted video transmission by clamping sub-100 ns ESD events below receiver damage threshold. | Use Scenario: Securing 5 V or 3.3 V camera module power inputs in forward-facing ADAS cameras subject to vibration-induced arcing and alternator ripple. IC Role / Device Role / Timing Role: Primary overvoltage guard on camera power rail, coordinated with upstream fuse and secondary ceramic capacitor. Use Value: Extends field life by eliminating premature failure due to repeated 400 W transient exposure at ambient temperatures up to 125 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-HF | Same VBR (16.0 V), but lower PPPM = 400 W (same rating), higher VC = 26.0 V, SMA package (larger footprint) | Less space-constrained designs; lower thermal resistance not required | Select if board layout allows SMA footprint and higher clamping voltage is acceptable |
| 1.5SMC16A | Same VBR, but SMC package (DO-214AB), 1.5 kW PPPM, higher VC = 26.0 V, no AEC-Q101 qualification | Industrial or non-automotive applications requiring higher surge margin | Choose only for non-automotive use where AEC-Q101 is not mandated and larger package is acceptable |
Compared with SMAJ16A-HF and 1.5SMC16A, the T4F16AHM3/H offers superior thermal robustness (TJ = 185 °C), AEC-Q101 qualification, and compact SMF packaging - making it the preferred choice for space-limited, high-temperature automotive signal-line protection where clamping precision and reliability are critical.
Availability
T4F16AHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, infotainment data links, and ADAS camera power rails requiring stable component supply, AEC-Q101 compliance, and high-temperature operational continuity.
Supply support for T4F16AHM3/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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and automotive-grade performance.
The T4F16AHM3/H belongs to Vishay's eSMP® PAR® TVS family, engineered specifically for high-temperature, high-reliability transient suppression in automotive electronics - targeting under-hood and ADAS applications where conventional TVS devices fail under thermal stress.
FAQ
What is the maximum clamping voltage of the T4F16AHM3/H at its rated peak pulse current?
The T4F16AHM3/H has a maximum clamping voltage (VC) of 22.0 V when subjected to its rated peak pulse current of 17.8 A under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The T4F16AHM3/H maintains this clamping performance across its full operating temperature range, ensuring consistent protection behavior in automotive environments.
Is the T4F16AHM3/H qualified for automotive applications?
Yes, the T4F16AHM3/H is AEC-Q101 qualified, meaning it has passed rigorous stress tests including high-temperature operating life, temperature cycling, and humidity bias HAST - all required for automotive electronic components. Its 185 °C maximum junction temperature rating and halogen-free HM3 construction further validate its suitability for under-hood and ADAS applications. The T4F16AHM3/H is explicitly listed in Vishay's AEC-Q101 qualified product matrix.
What package type does the T4F16AHM3/H use, and what are its key mechanical attributes?
The T4F16AHM3/H uses the SMF (DO-219AB) package: a low-profile, surface-mount case measuring 2.9 mm × 1.3 mm with 0.85 mm height. It features matte tin-plated leads compliant with J-STD-002 and JESD22-B102, UL 94 V-0 flammability-rated molding compound, and cathode identification via a visible color band. The T4F16AHM3/H's footprint matches JEDEC MO-294 standards and supports both wave and reflow soldering processes.
How does the T4F16AHM3/H compare to the T4F16A in terms of construction and compliance?
The T4F16AHM3/H is the halogen-free, RoHS-compliant, AEC-Q101-qualified version of the base T4F16A, distinguished by the HM3 suffix. It incorporates whisker-resistant plating per JESD201 Class 2 and meets material compliance requirements outlined in Vishay document 99912. Unlike non-HM3 variants, the T4F16AHM3/H is approved for automotive production use and carries full traceability documentation. All electrical specifications remain identical between T4F16A and T4F16AHM3/H.
What is the thermal resistance profile of the T4F16AHM3/H, and how does it impact PCB layout?
The T4F16AHM3/H has a typical junction-to-ambient thermal resistance (RthJA) of 135 °C/W on a standard FR4 PCB with 2 oz. copper and recommended pad layout, and a junction-to-mount (RthJM) of 15 °C/W. These values require adherence to Vishay's footprint recommendation (5.0 mm × 5.0 mm copper pads) to achieve rated 400 W pulse power. Deviations reduce surge handling capability - underscoring that thermal design is integral to the T4F16AHM3/H's performance in sustained transient scenarios.
T4F16AHM3/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):
- 13.6V
- Voltage - Breakdown (Min):
- 15.2V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 17.8A
- 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)
T4F16AHM3/H FAQ
1.How can I place an order for T4F16AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for T4F16AHM3/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 T4F16AHM3/H reliable?
The price and inventory of T4F16AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T4F16AHM3/H is usually 5 days.
3.What payment methods are accepted for T4F16AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T4F16AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T4F16AHM3/H?
T4F16AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T4F16AHM3/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 T4F16AHM3/H?
For technical support, including T4F16AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T4F16AHM3/H requirements.
6.How does Aetrix verify that T4F16AHM3/H is sourced from the original manufacturer or authorized distributors?
All T4F16AHM3/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 T4F16AHM3/H meets industry standards.
7.What is the process for return or replacement of T4F16AHM3/H?
All T4F16AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with T4F16AHM3/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 T4F16AHM3/H part is unused and in its original packaging.
Return procedure for T4F16AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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