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Vishay General Semiconductor - Diodes Division VTVS14ASMF-HM3-18
- Part No.:
- VTVS14ASMF-HM3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS14ASMF-HM3-18.pdf
- Description:
- TVS DIODE 13.8VWM 22.2VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,665
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Product details
Overview
VTVS14ASMF-HM3-18 from Vishay Semiconductors is a unidirectional 400 W TransZorb® transient voltage suppressor diode in SMF (DO-219AB) package, designed for ESD and surge protection of low-voltage DC lines. It features a 13.8 V maximum stand-off voltage (VRWM), 15.4–17.0 V reverse breakdown voltage (VBR) at 1 mA, 22.2 V maximum clamping voltage (VC) at 17.16 A peak pulse current, and ±30 kV IEC 61000-4-2 ESD immunity - deployed in automotive infotainment power rails and USB Type-C port protection.
For engineers reviewing the VTVS14ASMF-HM3-18 datasheet, VTVS14ASMF-HM3-18 pinout, VTVS14ASMF-HM3-18 application, or VTVS14ASMF-HM3-18 equivalent, this page delivers verified electrical specs, SMF package dimensions, clamping performance under 10/1000 μs transients, halogen-free compliance, and AEC-Q101 qualification status - critical for automotive-grade board-level ESD hardening and industrial interface protection.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its 15.4–17.0 V breakdown range. Its 22.2 V clamping voltage at 17.16 A (10/1000 μs) ensures robust overvoltage suppression while maintaining safe margin below downstream IC absolute maximum ratings.
Designed for surface-mount reflow and wave soldering, it meets MSL Level 1 per J-STD-020, supports ±30 kV contact/air discharge per IEC 61000-4-2, and exhibits 752 pF typical junction capacitance at 0 V - optimized for signal integrity in <100 MHz data lines such as CAN FD and automotive Ethernet PHY interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W (10/1000 μs waveform; sustains repeated surges without degradation) |
| Stand-off Voltage (VRWM) | 13.8 V max (safe operating voltage before conduction; matches 12 V automotive systems) |
| Breakdown Voltage (VBR) | 15.4–17.0 V at 1 mA (tight ±5 % tolerance ensures predictable turn-on threshold) |
| Clamping Voltage (VC) | 22.2 V at 17.16 A (limits transient voltage to protect downstream 24 V-rated components) |
| Junction Temp. Range | −55 °C to +175 °C (enables under-hood deployment in automotive ECUs) |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2; eliminates need for secondary ESD stages) |
| Capacitance | 752 pF at 0 V, 1 MHz (low enough for USB 2.0 and CAN bus without signal distortion) |
Pinout & Package
SMF (DO-219AB) low-profile surface-mount package: 3.9 mm × 1.9 mm × 1.08 mm, halogen-free molding compound, UL 94 V-0 rated, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground; completes clamping path during transient events |
| Cathode | Protected line input | Connected to I/O line (e.g., USB VBUS, LIN bus); conducts avalanche current to ground when VRWM exceeded |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/3a surges in 12 V automotive networks without failure |
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD |
| Low-profile SMF package | 1.08 mm height enables use in space-constrained modules like telematics antennas and ADAS camera housings |
| "Low-Noise" fast response | Sub-nanosecond turn-on time prevents overshoot damage to sensitive analog front-ends and ADC inputs |
| Halogen-free & RoHS-compliant | Meets automotive OEM material declarations (e.g., GMW3172, Ford WSS-M99P9999-A1) |
Applications
| Automotive Infotainment Power Rail | USB Type-C Port Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines feeding head unit processors and display drivers against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between fuse output and DC/DC input, conducting only during overvoltage events. Use Value: Limits voltage to ≤22.2 V during 17.16 A surges, preventing latch-up or burnout in buck converters rated for 24 V absolute max. |
Use Scenario: Safeguarding USB Type-C VBUS pins against ESD and hot-plug induced spikes in vehicle docking stations. IC Role / Device Role / Timing Role: Standoff-mode protector with 13.8 V VRWM, placed inline before USB controller's internal overvoltage circuitry. Use Value: Clamps ±30 kV ESD strikes within nanoseconds while adding only 752 pF capacitance - preserving USB 2.0 signal integrity. |
| Industrial CAN FD Bus Node | Smart Sensor Signal Conditioning |
Use Scenario: Shielding CAN FD transceivers (e.g., TCAN1042) from coupled transients on 12 V power and signal lines in factory automation PLCs. IC Role / Device Role / Timing Role: Primary surge suppressor on VCC rail and common-mode choke input side, coordinated with GDT or MOV for multi-stage protection. Use Value: Delivers 400 W pulse handling without derating at +125 °C ambient, ensuring reliability across extended temperature cycles. |
Use Scenario: Protecting analog outputs (4–20 mA, 0–10 V) of smart pressure/temperature sensors exposed to field wiring surges. IC Role / Device Role / Timing Role: Low-leakage (0.05 μA max IR) standoff protector on sensor output line, minimizing offset error in precision DAC circuits. Use Value: Maintains <0.1 % full-scale error contribution while suppressing 10/1000 μs surges up to 17.16 A - critical for SIL-2 functional safety loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14A-E3/57T | Same 14 V nominal rating but SMA package (DO-214AC); 400 W rating; ±5 % VBR tolerance; 23.2 V VC at 17.3 A | Larger footprint (4.5 × 2.7 mm vs. 3.9 × 1.9 mm); higher thermal resistance (RthJL = 35 K/W vs. 20 K/W) | Choose for legacy PCBs using SMA footprints or where higher mounting height is acceptable |
| 1.5SMC14A | Same 14 V rating, SMC package (DO-214AB); 1500 W rating; ±5 % VBR; 23.2 V VC at 64.9 A | Higher power handling but 7.1 × 6.2 mm body; not AEC-Q101 qualified; 1000 pF capacitance | Choose only for non-automotive industrial surge-only applications requiring >400 W capability |
Compared with SMAJ14A-E3/57T and 1.5SMC14A, VTVS14ASMF-HM3-18 offers superior thermal performance (20 K/W vs. ≥35 K/W), smaller footprint for dense layouts, AEC-Q101 validation for automotive use, and lower capacitance - making it optimal for next-gen compact, high-reliability ESD-critical designs.
Availability
VTVS14ASMF-HM3-18 is available at Aetrix Electronics and suitable for automotive infotainment systems, USB Type-C docking solutions, and industrial CAN FD nodes requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for VTVS14ASMF-HM3-18 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 Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The VTVS eSMP® Series targets board-level ESD and surge protection in space-constrained, high-temperature environments - engineered specifically for AEC-Q101 compliance and seamless integration into automotive power distribution and data interface modules.
FAQ
What is the maximum clamping voltage of the VTVS14ASMF-HM3-18 under a 10/1000 μs surge?
The VTVS14ASMF-HM3-18 has a maximum reverse clamping voltage (VC) of 22.2 V when subjected to its rated peak pulse current of 17.16 A with a 10/1000 μs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document No. 85891, Rev. 2.2) and ensures downstream components remain within safe operating limits during transient events. The VTVS14ASMF-HM3-18 achieves this clamping performance while maintaining unidirectional operation and ±5 % VBR tolerance.
Is the VTVS14ASMF-HM3-18 qualified for automotive applications?
Yes, the VTVS14ASMF-HM3-18 is AEC-Q101 qualified, meaning it has passed rigorous stress tests including high-temperature operating life (HTOL), temperature cycling (TCT), and ESD robustness required for automotive electronic control units. Its −55 °C to +175 °C operating junction temperature range and halogen-free, RoHS-compliant construction further support deployment in engine bay, infotainment, and ADAS modules. The VTVS14ASMF-HM3-18 is explicitly listed in Vishay's AEC-Q101 qualified product table.
What does the "HM3-18" suffix indicate in VTVS14ASMF-HM3-18?
The "HM3-18" suffix denotes halogen-free (H), lead-free tin plating (M), 3 k per 7″ reel packaging (3), and date code format "18" indicating 2018 - though the part remains current per Vishay's revision 2.2 (2021) datasheet. This ordering code confirms RoHS compliance, JEDEC-standard reflow compatibility (peak 260 °C), and MSL Level 1 moisture sensitivity - all validated for the VTVS14ASMF-HM3-18. The "HM3" variant is functionally identical to "M3" but adds halogen-free certification.
Can the VTVS14ASMF-HM3-18 be used in bidirectional signal lines?
No, the VTVS14ASMF-HM3-18 is a unidirectional TVS diode and must not be used on bidirectional signal lines such as RS-485 or differential pairs without external biasing. Its polarity is fixed: cathode connects to the protected line, anode to ground. For bidirectional protection, Vishay offers complementary parts like VTVS14BSMF-HM3-18 (bidirectional version with same VRWM and clamping specs). Using the unidirectional VTVS14ASMF-HM3-18 on AC-coupled or differential signals risks forward conduction during normal operation.
What is the thermal resistance (RthJL) of the VTVS14ASMF-HM3-18?
The thermal resistance from junction to lead (RthJL) of the VTVS14ASMF-HM3-18 is 20 K/W when mounted on an infinite heat sink, as specified in the Absolute Maximum Ratings table of the Vishay datasheet (Document No. 85891). This low value reflects the efficient thermal path enabled by the SMF (DO-219AB) package's metalized leads and compact die attach - critical for sustaining repetitive 400 W pulses in high-ambient environments. The VTVS14ASMF-HM3-18 leverages this to maintain reliability at +175 °C junction temperature.
VTVS14ASMF-HM3-18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-219AB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 13.8V
- Voltage - Breakdown (Min):
- 15.4V
- Voltage - Clamping (Max) @ Ipp:
- 22.2V
- Current - Peak Pulse (10/1000µs):
- 17.16A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 752pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS14ASMF-HM3-18 FAQ
1.How can I place an order for VTVS14ASMF-HM3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS14ASMF-HM3-18 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 VTVS14ASMF-HM3-18 reliable?
The price and inventory of VTVS14ASMF-HM3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VTVS14ASMF-HM3-18 is usually 5 days.
3.What payment methods are accepted for VTVS14ASMF-HM3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS14ASMF-HM3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS14ASMF-HM3-18?
VTVS14ASMF-HM3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS14ASMF-HM3-18 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 VTVS14ASMF-HM3-18?
For technical support, including VTVS14ASMF-HM3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS14ASMF-HM3-18 requirements.
6.How does Aetrix verify that VTVS14ASMF-HM3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS14ASMF-HM3-18 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 VTVS14ASMF-HM3-18 meets industry standards.
7.What is the process for return or replacement of VTVS14ASMF-HM3-18?
All VTVS14ASMF-HM3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS14ASMF-HM3-18, 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 VTVS14ASMF-HM3-18 part is unused and in its original packaging.
Return procedure for VTVS14ASMF-HM3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS14ASMF-HM3-18 Tags
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