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Vishay General Semiconductor - Diodes Division VTVS25GSMF-HM3-18
- Part No.:
- VTVS25GSMF-HM3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS25GSMF-HM3-18.pdf
- Description:
- TVS DIODE 25.2VWM 42VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,000
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Product details
Overview
VTVS25GSMF-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 25.2 V maximum stand-off voltage (VRWM), 29.4–30.6 V reverse breakdown voltage (VBR) at 1 mA, 42 A peak pulse current (IPPM), 42 V maximum clamping voltage (VC) at IPPM, and ±2 % VBR tolerance - ideal for automotive infotainment power rail and USB-C port protection.
For engineers reviewing the VTVS25GSMF-HM3-18 datasheet, VTVS25GSMF-HM3-18 pinout, VTVS25GSMF-HM3-18 application, or VTVS25GSMF-HM3-18 equivalent, key selection criteria include its 400 W 10/1000 μs pulse rating, ±30 kV IEC 61000-4-2 ESD immunity, 433 pF capacitance at 0 V, AEC-Q101 qualification, and compatibility with SOD-123W footprint.
Technical Context
This TVS diode operates as a unidirectional clamping device, triggering into avalanche conduction when reverse voltage exceeds its 29.4–30.6 V breakdown range. Its low 42 V clamping voltage at 42 A ensures robust protection of downstream 24 V nominal systems without overvoltage stress.
Designed for surface-mount reflow soldering, it meets MSL level 1 per J-STD-020, supports peak temperatures up to 260 °C, and delivers ±30 kV contact/air discharge ESD protection per IEC 61000-4-2 - critical for automotive and industrial interface ports exposed to human handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W (10/1000 μs waveform; sustains transient surges without failure) |
| Stand-off Voltage (VRWM) | 25.2 V max (blocks normal 24 V system operation while remaining non-conductive) |
| Breakdown Voltage (VBR) | 29.4–30.6 V at 1 mA (±2 % tolerance ensures precise trigger threshold for 24 V rails) |
| Clamping Voltage (VC) | 42 V at 42 A IPPM (limits voltage seen by protected ICs to safe levels during surge) |
| Capacitance (CD) | 433 pF at 0 V, 1 MHz (low enough for USB 2.0 signal integrity; not suitable for high-speed USB 3.0) |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2; eliminates need for external ESD staging) |
| Junction Temp Range | −55 °C to +175 °C (supports under-hood automotive deployment and industrial thermal cycling) |
Pinout & Package
Package: SMF (DO-219AB), halogen-free molding compound, 1.08 mm height, 3.9 mm length, 1.9 mm width, cathode marked by bar. Compatible with SOD-123W footprint and reflow soldering (peak 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; defines clamping reference point |
| Cathode | Protected line input | Connected to line being protected (e.g., 24 V supply rail); conducts avalanche current to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Handles ISO 7637-2 Pulse 1/2a/3a transients in 24 V automotive systems without degradation |
| ±2 % VBR tolerance | Enables tighter design margins vs. ±5 % variants, reducing risk of premature clamping on nominal 24 V rails |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock |
| Low-profile SMF package | 1.08 mm height enables use in space-constrained modules such as ADAS camera ECUs and body control units |
| "Low-Noise" fast response | Sub-nanosecond turn-on time prevents ESD-induced latch-up in sensitive microcontrollers and transceivers |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs of automotive body control modules (BCM) against load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between 24 V rail and chassis ground. Use Value: Limits transient voltage to ≤42 V, preventing damage to 36 V-rated DC-DC converters and MCU power supplies. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation. IC Role / Device Role / Timing Role: Standoff protection device connected across sensor output and local ground. Use Value: Absorbs ESD events from cable handling without affecting 0.1 % FS accuracy or introducing >433 pF loading error. |
| USB-C Port ESD Protection | Telecom DC Feeder Line |
|
Use Scenario: Safeguarding VBUS line of USB-C receptacles in automotive infotainment head units. IC Role / Device Role / Timing Role: Primary unidirectional TVS on 5–20 V programmable power supply (PPS) path. Use Value: Withstands ±30 kV contact ESD per IEC 61000-4-2 while maintaining <433 pF capacitance for USB 2.0 signal integrity. |
Use Scenario: Protecting −48 V DC feeder lines in telecom base station power distribution boards. IC Role / Device Role / Timing Role: Reverse-polarity TVS mounted between feed line and return, referenced to system ground. Use Value: Clamps lightning-induced surges to ≤42 V, preserving isolation barriers and protecting PoE controllers rated for −53 V nominal. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/57T | ±5 % VBR (25.6–28.4 V), 400 W, SMA package (DO-214AC), 2.5 mm height | Higher profile; less suitable for ultra-low-height automotive modules | Choose for cost-sensitive industrial designs where board height >2.5 mm is acceptable |
| SMF24A | ±5 % VBR (25.6–28.4 V), 400 W, same SMF (DO-219AB) package, RoHS-compliant only | No AEC-Q101 qualification; lower ESD rating (±15 kV contact) | Acceptable for non-automotive consumer electronics with relaxed reliability requirements |
Compared with VTVS25GSMF-HM3-18, SMAJ24A-E3/57T offers identical power rating but lacks AEC-Q101 and has higher package height, while SMF24A shares the same footprint but sacrifices automotive qualification and ESD robustness - making VTVS25GSMF-HM3-18 the optimal choice for safety-critical 24 V systems requiring guaranteed performance.
Availability
VTVS25GSMF-HM3-18 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power systems requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for VTVS25GSMF-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 high-density, high-surge applications demanding AEC-Q101 qualification, low-profile packaging, and precise ±2 % breakdown tolerance - specifically engineered for next-generation automotive power distribution and interface protection.
FAQ
What is the clamping voltage of VTVS25GSMF-HM3-18 at its rated peak pulse current?
The VTVS25GSMF-HM3-18 has a maximum reverse clamping voltage (VC) of 42 V at its rated 42 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value ensures protected circuits remain within safe operating limits during surge events, and is confirmed in Vishay's Document Number 85891, Table "Electrical Characteristics".
Is VTVS25GSMF-HM3-18 qualified for automotive applications?
Yes, VTVS25GSMF-HM3-18 is AEC-Q101 qualified, meaning it has passed stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock required for automotive under-hood and cabin electronics. The "H" in the part number explicitly denotes AEC-Q101 qualification per Vishay's ordering code table.
What does the "G" in VTVS25GSMF-HM3-18 indicate?
The "G" in VTVS25GSMF-HM3-18 specifies ±2 % tolerance on the reverse breakdown voltage (VBR), distinguishing it from "A"-suffix variants with ±5 % tolerance. For VTVS25GSMF-HM3-18, this means VBR is tightly controlled between 29.4 V and 30.6 V at 1 mA, enabling more precise protection margin design on 24 V systems.
Can VTVS25GSMF-HM3-18 be used in USB 2.0 data line protection?
No, VTVS25GSMF-HM3-18 is not recommended for USB 2.0 data line protection due to its 433 pF capacitance at 0 V, which exceeds the typical <5 pF requirement for full-speed USB 2.0 signal integrity. It is intended for power rail and low-speed analog line protection - such as VBUS or 4–20 mA loops - where capacitance is not signal-critical.
What is the thermal resistance junction-to-lead (RthJL) for VTVS25GSMF-HM3-18?
The thermal resistance junction-to-lead (RthJL) for VTVS25GSMF-HM3-18 is 20 K/W when mounted on an infinite heat sink, as specified in the "Absolute Maximum Ratings" table of Vishay Document Number 85891. This value supports thermal design for repeated surge events in high-ambient environments like automotive engine compartments.
VTVS25GSMF-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):
- 25.2V
- Voltage - Breakdown (Min):
- 29.4V
- Voltage - Clamping (Max) @ Ipp:
- 42V
- Current - Peak Pulse (10/1000µs):
- 9.35A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 433pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS25GSMF-HM3-18 FAQ
1.How can I place an order for VTVS25GSMF-HM3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS25GSMF-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 VTVS25GSMF-HM3-18 reliable?
The price and inventory of VTVS25GSMF-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 VTVS25GSMF-HM3-18 is usually 5 days.
3.What payment methods are accepted for VTVS25GSMF-HM3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS25GSMF-HM3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS25GSMF-HM3-18?
VTVS25GSMF-HM3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS25GSMF-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 VTVS25GSMF-HM3-18?
For technical support, including VTVS25GSMF-HM3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS25GSMF-HM3-18 requirements.
6.How does Aetrix verify that VTVS25GSMF-HM3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS25GSMF-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 VTVS25GSMF-HM3-18 meets industry standards.
7.What is the process for return or replacement of VTVS25GSMF-HM3-18?
All VTVS25GSMF-HM3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS25GSMF-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 VTVS25GSMF-HM3-18 part is unused and in its original packaging.
Return procedure for VTVS25GSMF-HM3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS25GSMF-HM3-18 Tags
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