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Vishay General Semiconductor - Diodes Division VTVS23ASMF-HM3-18
- Part No.:
- VTVS23ASMF-HM3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS23ASMF-HM3-18.pdf
- Description:
- TVS DIODE 22.6VWM 38VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,582
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Product details
Overview
VTVS23ASMF-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 22.6 V maximum stand-off voltage (VRWM), 25.7–28.4 V reverse breakdown voltage (VBR) at 1 mA, 38 A peak pulse current (IPPM), 38 V maximum clamping voltage (VC) at IPPM, and ±30 kV IEC 61000-4-2 ESD immunity - deployed in automotive infotainment power rails and USB-C port protection.
For engineers reviewing the VTVS23ASMF-HM3-18 datasheet, VTVS23ASMF-HM3-18 pinout, VTVS23ASMF-HM3-18 application, or VTVS23ASMF-HM3-18 equivalent, key selection criteria include clamping voltage margin relative to protected IC VCC, thermal resistance (20 K/W), halogen-free SOD-123W-compatible packaging, and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
This device operates as a unidirectional avalanche diode with fast response time enabled by "Low-Noise" technology, triggering when transient voltage exceeds VRWM = 22.6 V and clamping to ≤38 V at 38 A (10/1000 μs waveform). Its junction-to-lead thermal resistance is 20 K/W, enabling robust power dissipation on minimal PCB copper.
The SMF (DO-219AB) package supports wave and reflow soldering per J-STD-020 MSL level 1, with peak temperature tolerance up to 260 °C. It is halogen-free, RoHS-compliant, and qualified to AEC-Q101 - confirming suitability for under-hood and cabin electronics where thermal cycling and long-term reliability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W (10/1000 μs waveform - sustains high-energy transients without failure) |
| Stand-off Voltage (VRWM) | 22.6 V (maximum continuous reverse voltage before conduction begins) |
| Breakdown Voltage (VBR) | 25.7–28.4 V at IT = 1 mA (tight ±5 % tolerance ensures predictable turn-on threshold) |
| Clamping Voltage (VC) | 38 V at IPPM = 38 A (limits downstream voltage stress during surge events) |
| ESD Immunity | ±30 kV contact & air discharge (IEC 61000-4-2 - protects against human-body model ESD) |
| Junction Temp Range | −55 °C to +175 °C (supports operation in engine control units and powertrain modules) |
| Capacitance (CD) | 480 pF at VR = 0 V, f = 1 MHz (low enough for USB 2.0 signal integrity, not suitable for USB 3.0+) |
Pinout & Package
SMF (DO-219AB) low-profile surface-mount package, compatible with SOD-123W footprint; cathode marked by bar on top surface. Dimensions: 3.9 mm × 1.9 mm × 1.08 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground; forms return path during clamping |
| Cathode | Protected line input | Connected to line being protected (e.g., 24 V supply rail); polarity-sensitive installation required |
Key Features
| Feature | Design Value |
|---|---|
| 400 W Peak Pulse Power | Handles high-energy surges (e.g., ISO 7637-2 Pulse 1/2a/5a) without degradation in automotive power networks |
| ±5 % VBR Tolerance | Ensures consistent clamping onset across production lots - critical for tight-margin 24 V systems |
| Low-Noise Fast Response | Sub-nanosecond turn-on minimizes overshoot on sensitive analog or communication lines |
| AEC-Q101 Qualified | Validated for automotive applications including infotainment, body control modules, and ADAS sensor interfaces |
| Halogen-Free & RoHS | Meets automotive OEM environmental compliance requirements (e.g., VW 80101, GMW3172) |
Applications
| Automotive Infotainment Power Rail | USB-C Port Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs to head unit MCUs and display drivers from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between VCC and GND, clamping transients before they reach LDOs or PMICs. Use Value: With 38 V clamping and 22.6 V VRWM, it provides 5.4 V margin above nominal 24 V rail while surviving 400 W pulses. |
Use Scenario: Safeguarding USB-C CC and VBUS lines against ESD and hot-plug surges in vehicle docking stations. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBUS line (22.6 V VRWM) and CC line (with lower-VRWM variant), grounded via short trace. Use Value: ±30 kV IEC 61000-4-2 rating meets USB-IF ESD compliance; 480 pF capacitance avoids signal integrity issues on USB 2.0 lanes. |
| Industrial CAN Bus Node | Smart Lighting DC Input Stage |
|
Use Scenario: Secondary protection on 12 V/24 V CAN transceiver power pins in factory automation gateways. IC Role / Device Role / Timing Role: Downstream clamping device after primary common-mode choke and upstream TVS array. Use Value: 175 °C max junction temperature enables placement near heat-generating CAN PHY ICs without derating. |
Use Scenario: Surge suppression on constant-current LED driver inputs exposed to outdoor lightning-induced surges. IC Role / Device Role / Timing Role: First-line transient absorber on 24–48 V DC input, ahead of buck controller and MOSFET switch. Use Value: 400 W rating handles 10/1000 μs surges per IEC 61000-4-5 Level 3 (2 kV line-earth), preventing driver latch-up or overvoltage shutdown. |
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 | Higher VRWM (24 V), higher VC (38.9 V), same 400 W rating, SMA package (larger than SMF) | Less suitable for space-constrained automotive modules due to 4.5 mm × 2.7 mm footprint | Select when board layout allows larger package and tighter VRWM alignment with 24 V nominal systems is prioritized |
| VTVS23GSMF-HM3-18 | Same VRWM (22.6 V) and package, but ±2 % VBR tolerance (vs. ±5 % for VTVS23ASMF-HM3-18) | Better suited for precision clamping where narrow VBR distribution reduces design margin uncertainty | Choose for high-reliability automotive ECUs requiring tighter parametric control and statistical process validation |
Compared with SMAJ24A and VTVS23GSMF-HM3-18, the VTVS23ASMF-HM3-18 offers optimal balance of compact SMF footprint, AEC-Q101 qualification, and cost-effective ±5 % VBR tolerance - making it ideal for volume automotive and industrial applications where space and qualification are mandatory but ultra-tight VBR spread is not required.
Availability
VTVS23ASMF-HM3-18 is available at Aetrix Electronics and suitable for automotive infotainment systems, USB-C docking solutions, industrial CAN nodes, and smart lighting controllers requiring stable component supply across multi-year production cycles.
Supply support for VTVS23ASMF-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 TransZorb® eSMP® Series - including VTVS23ASMF-HM3-18 - was engineered specifically for automotive-grade transient suppression, combining AEC-Q101 qualification, low-profile packaging, and precise clamping performance in harsh environments.
FAQ
What is the maximum clamping voltage of the VTVS23ASMF-HM3-18 under surge conditions?
The VTVS23ASMF-HM3-18 has a maximum reverse clamping voltage (VC) of 38 V at its rated peak pulse current of 38 A (10/1000 μs waveform). This value is guaranteed across temperature and lifetime, ensuring downstream ICs see no more than 38 V during standardized surge events - critical for protecting 24 V system components with 40 V absolute maximum ratings.
Is the VTVS23ASMF-HM3-18 qualified for automotive applications?
Yes, the VTVS23ASMF-HM3-18 is AEC-Q101 qualified, meaning it has passed rigorous stress tests for temperature cycling, humidity, mechanical shock, and high-temperature operating life - confirming suitability for automotive powertrain, chassis, and infotainment systems. The "H" in the part number denotes AEC-Q101 qualification per Vishay's ordering code convention.
What package does the VTVS23ASMF-HM3-18 use, and is it compatible with standard pick-and-place equipment?
The VTVS23ASMF-HM3-18 uses the SMF (DO-219AB) package - a low-profile, halogen-free surface-mount outline measuring 3.9 mm × 1.9 mm × 1.08 mm. It is fully compatible with standard SMT assembly processes, including J-STD-020-compliant reflow (peak 260 °C) and wave soldering, and is supplied on 8 mm tape/reel (3K or 10K per reel) for automated placement.
How does the ±5 % VBR tolerance of VTVS23ASMF-HM3-18 affect circuit protection design?
The ±5 % VBR tolerance means the actual breakdown voltage of VTVS23ASMF-HM3-18 falls between 25.7 V and 28.4 V at 1 mA. Designers must ensure this range provides adequate margin above the protected line's maximum steady-state voltage (22.6 V VRWM) while staying below the absolute maximum rating of downstream components - typically requiring ≥5 V design margin for robustness in 24 V systems.
Can the VTVS23ASMF-HM3-18 be used for bidirectional transient protection?
No, the VTVS23ASMF-HM3-18 is a unidirectional TVS diode, intended only for DC line protection with defined polarity (cathode to protected line, anode to ground). For AC or bidirectional signal lines (e.g., RS-485, CAN data), a bidirectional variant such as VTVS23BSMF-HM3-18 would be required - the "A" suffix in VTVS23ASMF-HM3-18 explicitly denotes unidirectional configuration.
VTVS23ASMF-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):
- 22.6V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 38V
- Current - Peak Pulse (10/1000µs):
- 10.09A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 480pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS23ASMF-HM3-18 FAQ
1.How can I place an order for VTVS23ASMF-HM3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS23ASMF-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 VTVS23ASMF-HM3-18 reliable?
The price and inventory of VTVS23ASMF-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 VTVS23ASMF-HM3-18 is usually 5 days.
3.What payment methods are accepted for VTVS23ASMF-HM3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS23ASMF-HM3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS23ASMF-HM3-18?
VTVS23ASMF-HM3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS23ASMF-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 VTVS23ASMF-HM3-18?
For technical support, including VTVS23ASMF-HM3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS23ASMF-HM3-18 requirements.
6.How does Aetrix verify that VTVS23ASMF-HM3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS23ASMF-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 VTVS23ASMF-HM3-18 meets industry standards.
7.What is the process for return or replacement of VTVS23ASMF-HM3-18?
All VTVS23ASMF-HM3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS23ASMF-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 VTVS23ASMF-HM3-18 part is unused and in its original packaging.
Return procedure for VTVS23ASMF-HM3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS23ASMF-HM3-18 Tags
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