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Vishay General Semiconductor - Diodes Division T4F11AHM3/H
- Part No.:
- T4F11AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
T4F11AHM3/H.pdf
- Description:
- LOW PROFILE OF 400W PAR TVS PROD
- Quantity:
- Payment:
- Shipping:
Inventory:20,860
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Product details
Overview
T4F11AHM3/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 sensitive signal lines and power rails. It features a 10.5 V to 11.6 V breakdown voltage (VBR), 9.40 V stand-off voltage (VWM), 400 W peak pulse power (10/1000 µs), 15.6 V clamping voltage at 25.6 A peak surge current, and AEC-Q101 qualification for under-hood and ADAS sensor interface protection.
For engineers reviewing the T4F11AHM3/H datasheet, T4F11AHM3/H pinout, T4F11AHM3/H application, or T4F11AHM3/H equivalent, key selection criteria include its SMF (DO-219AB) package compatibility, 185 °C maximum junction temperature, low leakage (<1 µA at VWM), and precise clamping performance in automotive transients such as load dump and ISO 7637-2 pulses.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with junction passivation optimized for high-reliability operation. Its unidirectional architecture provides robust reverse-biased clamping during positive-going transients while maintaining low leakage and stable VBR across temperature.
The device operates within -65 °C to +185 °C junction temperature range and delivers consistent 400 W peak pulse power dissipation under standardized 10/1000 µs waveform conditions. Thermal resistance is specified at RthJA = 160 °C/W (JEDEC 51-2A, FR4 PCB), enabling reliable thermal management in compact automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 10.5 V / 11.0 V / 11.6 V - defines precise voltage threshold at which clamping initiates under 1 mA test current |
| VWM | 9.40 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 15.6 V - clamped voltage seen by protected circuit during 25.6 A surge, limiting stress on downstream ICs |
| PPPM | 400 W - peak transient energy absorption capability per 10/1000 µs waveform, critical for ISO 7637-2 compliance |
| IPPM | 25.6 A - peak surge current corresponding to VC, used to size series impedance and verify margin against failure |
| TJ max. | +185 °C - enables placement near high-temperature components (e.g., power converters, engine control units) |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD per AEC standard |
Pinout & Package
Package: SMF (DO-219AB), low-profile surface-mount case with matte tin-plated leads, MSL Level 1, compatible with wave and reflow soldering. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for unidirectional clamping | Connected to ground or lower-potential rail; establishes forward conduction path during negative transients |
| Cathode | Protected line connection point | Connected to signal/power line requiring protection; conducts when transient exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 185 °C junction rating | Enables direct placement in high-temperature zones (e.g., near power MOSFETs or engine compartments) without derating |
| AEC-Q101 qualification | Validated for automotive use including HTGB, HTRB, and temperature cycling-no additional qualification required for Tier 1 designs |
| SMF (DO-219AB) footprint | Standardized 2.9 mm × 1.3 mm outline with 0.85 mm height supports automated assembly and space-constrained layouts |
| Low leakage at VWM | <1 µA at 9.40 V and 150 °C ensures minimal standby power loss and signal integrity in always-on sensor interfaces |
| 0.067 %/°C VBR tempco | Predictable, linear VBR drift over temperature simplifies system-level margin analysis across -40 °C to +125 °C ambient |
Applications
| Automotive Sensor Interface Protection | Power Supply Rail Clamping |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver input pins and analog sensor outputs (e.g., pressure, temperature) from ESD and switching transients in body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp fast-rising transients before they reach the IC's ESD structure. Use Value: Limits voltage to ≤15.6 V during 25.6 A surges, preserving signal integrity and preventing latch-up in 5 V or 3.3 V interface ICs. |
Use Scenario: Safeguarding 12 V battery-fed microcontroller power inputs against load-dump spikes up to 40 V in infotainment head units. IC Role / Device Role / Timing Role: Primary clamping device on main VCC rail, coordinated with upstream fuse and downstream LDO. Use Value: Absorbs 400 W for 1 ms without degradation, maintaining <1 µA leakage to avoid battery drain in sleep mode. |
| ADAS Camera Module Protection | Industrial CAN Bus Node Protection |
Use Scenario: Shielding MIPI CSI-2 data lines and power rails in front-facing camera modules exposed to ignition noise and ESD. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 100 pF at 0 V) placed adjacent to image sensor and serializer ICs. Use Value: Clamps transients to 15.6 V within nanoseconds while adding negligible signal distortion to high-speed video signals. |
Use Scenario: Protecting isolated CAN transceivers in factory automation PLCs subjected to long cable-induced surges and ground bounce. IC Role / Device Role / Timing Role: Secondary protection stage after common-mode choke, shunting differential-mode surges to ground. Use Value: Withstands repeated 25.6 A surges at 10/1000 µs without parameter shift, ensuring >10-year field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A-H | Higher VBR (11.1–12.3 V), same 400 W rating, SMA package (larger footprint, higher RthJA) | Less suitable for space-constrained automotive modules; requires larger PCB area and has higher thermal resistance (200 °C/W) | Select when legacy SMA layout exists and 185 °C operation is not required |
| TPSMD10A | Lower VC (16.7 V), same VWM/VBR range, but only AEC-Q200 rated (not Q101), no 185 °C rating | Not qualified for automotive powertrain or safety-critical domains; limited to cabin electronics with lower ambient requirements | Select only for non-safety-critical consumer or industrial applications where AEC-Q101 is not mandated |
Compared with SMAJ10A-H and TPSMD10A, T4F11AHM3/H uniquely combines AEC-Q101 qualification, 185 °C operation, and DO-219AB packaging-enabling direct integration into next-generation automotive ECUs without thermal or qualification compromises.
Availability
T4F11AHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, ADAS camera module hardening, and industrial CAN bus node safeguarding requiring stable component supply and full AEC-Q101 traceability.
Supply support for T4F11AHM3/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 passive components for automotive, industrial, and computing markets.
The T4F11AHM3/H belongs to Vishay's eSMP® PAR® TVS family, engineered specifically for high-temperature, high-reliability automotive transients-including ISO 7637-2 and ISO 16750-2 compliance-while minimizing board space and thermal overhead.
FAQ
What is the exact breakdown voltage range for T4F11AHM3/H?
The T4F11AHM3/H has a guaranteed breakdown voltage (VBR) range of 10.5 V to 11.6 V at 1.0 mA test current, with a typical value of 11.0 V. This specification is measured per ANSI/IEEE C62.35 and confirmed across production lots. The narrow tolerance ensures predictable clamping onset in automotive signal protection circuits using the T4F11AHM3/H.
Is T4F11AHM3/H suitable for bidirectional transient suppression?
No, T4F11AHM3/H is strictly unidirectional and must be used with cathode toward the protected line and anode to ground. It does not provide clamping for negative-going transients beyond its forward voltage drop (~0.8 V). For bidirectional protection, a separate device such as a symmetric TVS or dual-diode configuration is required-T4F11AHM3/H alone cannot fulfill that function.
Does T4F11AHM3/H meet RoHS and halogen-free requirements?
Yes, T4F11AHM3/H carries the HM3 suffix, confirming it is halogen-free, RoHS-compliant, and passes JESD201 Class 2 whisker testing. The molding compound meets UL 94 V-0 flammability rating, and terminals are matte tin plated per J-STD-002 and JESD22-B102-fully satisfying automotive and industrial environmental compliance mandates.
What is the thermal resistance of T4F11AHM3/H on a standard PCB?
T4F11AHM3/H has a maximum junction-to-ambient thermal resistance (RthJA) of 160 °C/W when mounted on a standard FR4 PCB per JEDEC 51-2A with 2 oz. copper and recommended footprint. Its junction-to-mount (RthJM) is 18 °C/W, supporting effective heat transfer to heatsink pads or thermal vias in high-power transient scenarios involving the T4F11AHM3/H.
Can T4F11AHM3/H replace older SMAJ11A in existing designs?
T4F11AHM3/H is not a direct pin-compatible replacement for SMAJ11A due to differing packages (DO-219AB vs. SMA) and thermal characteristics. While both offer ~11 V VBR, the T4F11AHM3/H requires updated land pattern, offers superior 185 °C operation and AEC-Q101 validation, and delivers lower RthJA. Migration to T4F11AHM3/H demands layout revision-not drop-in substitution.
T4F11AHM3/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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 25.6A
- 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)
T4F11AHM3/H FAQ
1.How can I place an order for T4F11AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for T4F11AHM3/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 T4F11AHM3/H reliable?
The price and inventory of T4F11AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T4F11AHM3/H is usually 5 days.
3.What payment methods are accepted for T4F11AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T4F11AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T4F11AHM3/H?
T4F11AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T4F11AHM3/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 T4F11AHM3/H?
For technical support, including T4F11AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T4F11AHM3/H requirements.
6.How does Aetrix verify that T4F11AHM3/H is sourced from the original manufacturer or authorized distributors?
All T4F11AHM3/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 T4F11AHM3/H meets industry standards.
7.What is the process for return or replacement of T4F11AHM3/H?
All T4F11AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with T4F11AHM3/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 T4F11AHM3/H part is unused and in its original packaging.
Return procedure for T4F11AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T4F11AHM3/H Tags
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