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Vishay General Semiconductor - Diodes Division VTVS14ASMF-HM3-08
- Part No.:
- VTVS14ASMF-HM3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS14ASMF-HM3-08.pdf
- Description:
- TVS DIODE 13.8VWM 22.2VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:29,912
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Product details
Overview
VTVS14ASMF-HM3-08 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 industrial sensor interfaces.
For engineers reviewing the VTVS14ASMF-HM3-08 datasheet, VTVS14ASMF-HM3-08 pinout, VTVS14ASMF-HM3-08 application, or VTVS14ASMF-HM3-08 equivalent, key selection criteria include its 175 °C junction temperature rating, halogen-free SMF package compatibility with SOD-123W footprint, 752 pF typical capacitance at 0 V, and AEC-Q101 qualification option (not included in this variant).
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging avalanche breakdown to divert transients above VRWM while maintaining low leakage (<0.05 μA at VRWM). Its 10/1000 μs waveform-rated 400 W peak pulse power and 20 K/W thermal resistance enable robust protection in space-constrained PCB layouts.
The SMF package supports both wave and reflow soldering with peak temperature up to 260 °C, MSL level 1 moisture sensitivity, and UL 94 V-0 flammability rating. Its "Low-Noise" technology ensures sub-nanosecond response time, critical for safeguarding high-speed analog and digital signal paths against fast-rising ESD events.
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 (maximum continuous reverse voltage before significant leakage) |
| 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 IPPM (limits voltage seen by protected IC during surge) |
| ESD Immunity | ±30 kV contact & air discharge (IEC 61000-4-2 compliant for system-level ESD robustness) |
| Junction Temperature Range | −55 °C to +175 °C (supports under-hood automotive and industrial ambient conditions) |
| Capacitance (CD) | 752 pF at 0 V, 1 MHz (suitable for <10 Mbps data lines; not for USB 2.0+ or HDMI) |
Pinout & Package
SMF (DO-219AB) low-profile surface-mount package: 3.9 mm × 1.9 mm × 1.08 mm body, cathode marked by bar on top surface, compatible with SOD-123W footprint and reflow/wave soldering processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during forward conduction / reference node for unidirectional clamping | Connected to protected line's ground or low-side return path; defines clamping polarity |
| Cathode | Current exit during reverse avalanche / high-impedance terminal in normal operation | Connected to protected signal/power line; absorbs surge energy when voltage exceeds VRWM |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Handles IEC 61000-4-5 Level 3 surges (1 kV line-to-ground) without failure |
| ±5 % VBR tolerance | Ensures consistent clamping onset across production lots for reliable overvoltage margining |
| Low-profile SMF package | 1.08 mm height enables use in ultra-thin modules and dense automotive ECUs |
| Halogen-free & RoHS-compliant | Meets automotive ELV directive and IPC-1752A material declaration requirements |
| "Low-Noise" fast response | Sub-1 ns turn-on time prevents ESD-induced latch-up in CMOS interface ICs |
Applications
| Automotive Infotainment Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs to touchscreen controllers and audio amplifiers in vehicle cabins against load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between VCC and GND, clamping surges before they reach LDO regulators and SoCs. Use Value: 22.2 V clamping voltage limits stress on 16 V-rated input capacitors and prevents regulator shutdown during 50 V/100 ms load dump events. |
Use Scenario: Safeguarding 4–20 mA current loop transmitter outputs against field-induced surges in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Standoff-connected TVS on signal output line, conducting only during >13.8 V transients to preserve loop accuracy during normal operation. Use Value: 0.05 μA max reverse leakage at 13.8 V avoids measurement error in precision current sources; 752 pF capacitance does not distort 1 kHz loop bandwidth. |
| USB-C Port VBUS Surge Suppression | Smart Meter Communication Interface Protection |
|
Use Scenario: Secondary-level surge protection on USB-C VBUS lines downstream of primary fuses and filters in portable diagnostic tools. IC Role / Device Role / Timing Role: Fast-clamping TVS placed after EMI filter but before USB PD controller, absorbing residual 10/1000 μs surges. Use Value: 400 W rating handles multiple 1 kV surges per IEC 61000-4-5; 13.8 V VRWM allows safe operation with 5 V–20 V PD negotiation voltages. |
Use Scenario: Protecting RS-485 transceivers in smart electricity meters against lightning-induced surges on utility communication lines. IC Role / Device Role / Timing Role: Unidirectional TVS on A/B differential pair, referenced to local ground, clamping common-mode transients. Use Value: 175 °C max junction temperature supports meter operation inside sealed outdoor enclosures; halogen-free construction meets IEC 61215 fire safety standards. |
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 | Same VRWM (14 V), but SMA package (DO-214AC); 400 W rating; ±5 % VBR; 23.2 V VC at 17.3 A | Larger footprint (4.5 × 2.7 mm vs. 3.9 × 1.9 mm); higher thermal resistance (35 K/W vs. 20 K/W) | Choose SMAJ14A only if board layout already uses SMA footprints or requires higher mechanical robustness. |
| 1.5SMC14A | Same VRWM (14 V), but SMC package (DO-214AB); 1500 W rating; ±5 % VBR; 22.0 V VC at 68.2 A | 3× higher power handling; larger size (7.1 × 6.2 mm); not suitable for space-constrained designs | Select 1.5SMC14A where multi-pulse surge immunity (e.g., repeated lightning strikes) is required and PCB area permits. |
Compared with SMAJ14A and 1.5SMC14A, VTVS14ASMF-HM3-08 delivers identical clamping performance in a 45 % smaller footprint and 43 % lower thermal resistance - making it optimal for automotive ADAS modules and compact industrial sensors where board space and thermal management are critical.
Availability
VTVS14ASMF-HM3-08 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor interfaces, USB-C power delivery subsystems, and smart meter communication circuits requiring stable component supply and long-term lifecycle support.
Supply support for VTVS14ASMF-HM3-08 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 space-constrained, high-temperature environments - engineered specifically for AEC-Q101-qualified and industrial-grade transient suppression where low profile, fast response, and halogen-free compliance are mandatory.
FAQ
What is the maximum clamping voltage of the VTVS14ASMF-HM3-08 at its rated peak pulse current?
The VTVS14ASMF-HM3-08 has a maximum reverse clamping voltage (VC) of 22.2 V at its rated peak pulse current of 17.16 A (10/1000 μs waveform). This value is measured under standardized test conditions and defines the upper voltage limit imposed on the protected circuit during a surge event. The VTVS14ASMF-HM3-08 maintains this clamping performance across its full operating temperature range of −55 °C to +175 °C.
Is the VTVS14ASMF-HM3-08 AEC-Q101 qualified?
No, the VTVS14ASMF-HM3-08 is not AEC-Q101 qualified. The "H" in the part number denotes halogen-free construction and RoHS compliance, while "M3" indicates 3 k per 7″ reel packaging and "-08" specifies tape-and-reel orientation. AEC-Q101-qualified versions exist in the same family (e.g., VTVS14ASMF-HM3-08Q), but VTVS14ASMF-HM3-08 itself is rated for industrial-grade reliability and does not carry automotive qualification documentation.
What is the typical junction-to-lead thermal resistance (RthJL) of the VTVS14ASMF-HM3-08?
The VTVS14ASMF-HM3-08 has a thermal resistance of 20 K/W from junction to lead when mounted on an infinite heat sink. This value reflects efficient heat dissipation through the SMF (DO-219AB) package leads and supports sustained operation at its maximum junction temperature of +175 °C. The low RthJL enables reliable performance in thermally demanding applications such as engine control units and motor drive feedback circuits.
Can the VTVS14ASMF-HM3-08 be used in bidirectional signal protection?
No, the VTVS14ASMF-HM3-08 is a unidirectional TVS diode and is not suitable for bidirectional signal line protection. Its electrical characteristics - including polarity marking, asymmetric IV curve, and specified clamping only in reverse bias - confirm single-quadrant operation. For bidirectional protection (e.g., RS-485, CAN, or audio lines), a dedicated bidirectional variant like VTVS14BSMF-HM3-08 must be selected instead of the VTVS14ASMF-HM3-08.
What is the capacitance of the VTVS14ASMF-HM3-08 at zero bias and 1 MHz?
The VTVS14ASMF-HM3-08 exhibits a typical capacitance (CD) of 752 pF at VR = 0 V and f = 1 MHz. This value is measured under standard conditions and remains stable across the device's operating voltage range. Due to this relatively high capacitance, the VTVS14ASMF-HM3-08 is appropriate for DC power rails and low-speed signals (≤1 Mbps), but not recommended for high-speed interfaces such as USB 2.0, HDMI, or MIPI.
VTVS14ASMF-HM3-08 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-HM3-08 FAQ
1.How can I place an order for VTVS14ASMF-HM3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS14ASMF-HM3-08 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-HM3-08 reliable?
The price and inventory of VTVS14ASMF-HM3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VTVS14ASMF-HM3-08 is usually 5 days.
3.What payment methods are accepted for VTVS14ASMF-HM3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS14ASMF-HM3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS14ASMF-HM3-08?
VTVS14ASMF-HM3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS14ASMF-HM3-08 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-HM3-08?
For technical support, including VTVS14ASMF-HM3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS14ASMF-HM3-08 requirements.
6.How does Aetrix verify that VTVS14ASMF-HM3-08 is sourced from the original manufacturer or authorized distributors?
All VTVS14ASMF-HM3-08 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-HM3-08 meets industry standards.
7.What is the process for return or replacement of VTVS14ASMF-HM3-08?
All VTVS14ASMF-HM3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS14ASMF-HM3-08, 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-HM3-08 part is unused and in its original packaging.
Return procedure for VTVS14ASMF-HM3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS14ASMF-HM3-08 Tags
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