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Vishay General Semiconductor - Diodes Division VTVS11ASMF-HM3-08
- Part No.:
- VTVS11ASMF-HM3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS11ASMF-HM3-08.pdf
- Description:
- TVS DIODE 11.2VWM 18VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:29,785
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Product details
Overview
VTVS11ASMF-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 on low-voltage DC lines. It features a 11.2 V maximum stand-off voltage (VRWM), 12.6–13.9 V reverse breakdown voltage (VBR) at 1 mA, 18.0 V maximum clamping voltage (VC) at 21.13 A peak pulse current, and ±30 kV IEC 61000-4-2 ESD immunity - used in automotive infotainment power rails and industrial sensor interfaces.
For engineers reviewing the VTVS11ASMF-HM3-08 datasheet, VTVS11ASMF-HM3-08 pinout, VTVS11ASMF-HM3-08 application, or VTVS11ASMF-HM3-08 equivalent, key selection criteria include clamping performance under 10/1000 μs surge, unidirectional polarity, halogen-free SOD-123W-compatible packaging, and AEC-Q101 qualification status.
Technical Context
This device operates as a unidirectional avalanche diode with fast response time enabled by Vishay's "Low-Noise" technology. Its junction-to-lead thermal resistance is 20 K/W, enabling reliable operation up to 175 °C junction temperature under repetitive surge conditions.
The SMF package supports wave and reflow soldering per J-STD-020 MSL level 1, with peak temperature tolerance up to 260 °C. It delivers 400 W peak pulse power (10/1000 μs waveform) while maintaining <0.05 μA leakage at VRWM and 910 pF typical capacitance at 0 V bias - critical for high-speed data line protection where signal integrity must be preserved.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W (10/1000 μs waveform) - sustains automotive load-dump and ISO 7637-2 transient events without failure |
| Stand-off Voltage (VRWM) | 11.2 V max - blocks normal 12 V system operation while triggering only during overvoltage |
| Breakdown Voltage (VBR) | 12.6–13.9 V at 1 mA - tight ±5 % tolerance ensures predictable turn-on across temperature |
| Clamping Voltage (VC) | 18.0 V at 21.13 A IPPM - limits downstream IC voltage stress during surge |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - exceeds Level 4 immunity requirements |
| Capacitance | 910 pF at 0 V, 1 MHz - suitable for low-speed power/signal lines; not recommended for USB/USB-C |
| Package | SMF (DO-219AB) - footprint compatible with SOD-123W, height ≤1.08 mm for space-constrained PCBs |
Pinout & Package
SMF (DO-219AB) package: low-profile surface-mount diode with cathode marked by bar on top surface; dimensions 3.9 × 1.9 × 1.08 mm (L × W × H); compatible with standard SOD-123W land pattern.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input side of protected line | Connected to supply rail or signal source; carries surge current into device during clamping |
| Cathode | Ground reference terminal | Connected to system ground plane; completes clamping path; marked by bar on package top |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Withstands high-energy transients like ISO 7637-2 Pulse 5a without degradation |
| ±5 % VBR tolerance | Ensures consistent clamping threshold across production lots and temperature range |
| Halogen-free molding compound | Meets RoHS and JEDEC J-STD-020 MSL level 1 requirements for lead-free assembly |
| Low-profile SMF package | 1.08 mm height enables use in ultra-thin automotive modules and portable industrial sensors |
| "Low-Noise" fast response | Sub-nanosecond turn-on minimizes voltage overshoot before clamping engages |
Applications
| Automotive Infotainment Power Rail | Industrial Sensor Signal Line |
|---|---|
Use Scenario: 12 V power input to head unit MCU and display driver ICs exposed to load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and ground to clamp transients before they reach sensitive logic. Use Value: Limits voltage to ≤18.0 V during 21.13 A surge, preventing latch-up or permanent damage to 3.3 V/5 V interface circuitry. |
Use Scenario: Analog output line (0–10 V or 4–20 mA) from pressure/temperature sensor in factory automation PLC module. IC Role / Device Role / Timing Role: Standoff protector on sensor output node, activated only during ESD event or cable discharge. Use Value: 910 pF capacitance avoids signal distortion on slow analog outputs; ±30 kV ESD rating protects against operator-handling events. |
| Automotive Body Control Module (BCM) | Consumer Appliance Motor Driver Supply |
Use Scenario: 12 V switched supply feeding window lift, mirror control, or lighting drivers in BCM subassembly. IC Role / Device Role / Timing Role: Primary overvoltage clamp on fused 12 V distribution node upstream of MOSFET gate drivers. Use Value: 400 W rating handles ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 5b (alternator load dump) without derating. |
Use Scenario: DC bus input to BLDC motor driver in smart washing machine or HVAC fan module. IC Role / Device Role / Timing Role: Secondary surge limiter after bulk capacitor, protecting gate driver ICs from reflected transients. Use Value: 175 °C max junction temperature allows operation near heat-generating motor drivers; halogen-free construction meets appliance 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 |
|---|---|---|---|
| SMAJ11A | Same VRWM (11 V), but 400 W rating uses 8.3 ms waveform; lower clamping (18.2 V) and higher capacitance (1000 pF) | Less optimized for fast 10/1000 μs pulses; better suited for general-purpose industrial power rails than automotive | Select SMAJ11A if cost sensitivity outweighs need for AEC-Q101 qualification and tighter VBR tolerance |
| TPSMD11A | Identical VRWM and clamping (18.0 V), but ±10 % VBR tolerance and no AEC-Q101 qualification | Not validated for automotive environments; acceptable for commercial-grade consumer or white goods | Choose TPSMD11A when automotive qualification is unnecessary and broader VBR variation is acceptable |
Compared with SMAJ11A and TPSMD11A, VTVS11ASMF-HM3-08 offers tighter ±5 % VBR tolerance, AEC-Q101 qualification, and guaranteed 10/1000 μs 400 W performance - making it the preferred choice for automotive and high-reliability industrial designs where clamping predictability and qualification traceability are mandatory.
Availability
VTVS11ASMF-HM3-08 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor interfaces, and body control modules requiring stable component supply and long-term lifecycle support.
Supply support for VTVS11ASMF-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 passive and protection components for automotive, industrial, and computing markets.
VTVS11ASMF-HM3-08 belongs to the TransZorb® eSMP® Series - engineered specifically for robust, low-profile ESD and surge protection in space-constrained automotive and industrial electronics.
FAQ
What is the maximum operating temperature for VTVS11ASMF-HM3-08?
The VTVS11ASMF-HM3-08 has a maximum junction temperature (TJ) of +175 °C and a storage temperature range of -55 to +175 °C. This rating enables reliable operation in under-hood automotive environments and near heat-generating industrial components. The device maintains its 400 W peak pulse power capability across this full temperature range when mounted on an infinite heat sink with RthJL = 20 K/W.
Is VTVS11ASMF-HM3-08 qualified to AEC-Q101?
Yes, VTVS11ASMF-HM3-08 is AEC-Q101 qualified - confirmed in Vishay's official documentation for the VTVSxxASMF family. This qualification validates its suitability for automotive applications including engine control units, body electronics, and infotainment systems where reliability under thermal cycling, humidity, and mechanical stress is mandatory.
What does the 'HM3-08' suffix indicate in VTVS11ASMF-HM3-08?
The 'HM3-08' suffix denotes halogen-free (H), lead-free termination with tin plating (M), tape-and-reel packaging (3), and 3000 pieces per 7-inch reel (08). This matches Vishay's ordering code convention: H = halogen-free, M = lead-free, 3 = 3K per 7″ reel, and -08 = standard packaging variant per datasheet Table "Ordering Information".
Can VTVS11ASMF-HM3-08 be used in bidirectional signal lines?
No, VTVS11ASMF-HM3-08 is a unidirectional TVS diode and must not be used on bidirectional signal lines such as RS-485 or CAN without external circuitry. Its polarity is fixed: anode to line, cathode to ground. For bidirectional protection, a dedicated bidirectional TVS like VTVS11BSMF or dual-diode configuration is required.
What is the typical capacitance of VTVS11ASMF-HM3-08 and where is it specified?
The VTVS11ASMF-HM3-08 has a typical capacitance of 910 pF measured at 0 V reverse bias and 1 MHz frequency, as published in Vishay's Electrical Characteristics table (Document Number 85891, Rev. 2.2, page 2). This value is appropriate for low-speed power rails and analog sensor outputs but too high for USB 2.0, HDMI, or high-speed serial interfaces.
VTVS11ASMF-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):
- 11.2V
- Voltage - Breakdown (Min):
- 12.6V
- Voltage - Clamping (Max) @ Ipp:
- 18V
- Current - Peak Pulse (10/1000µs):
- 21.13A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 910pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS11ASMF-HM3-08 FAQ
1.How can I place an order for VTVS11ASMF-HM3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS11ASMF-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 VTVS11ASMF-HM3-08 reliable?
The price and inventory of VTVS11ASMF-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 VTVS11ASMF-HM3-08 is usually 5 days.
3.What payment methods are accepted for VTVS11ASMF-HM3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS11ASMF-HM3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS11ASMF-HM3-08?
VTVS11ASMF-HM3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS11ASMF-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 VTVS11ASMF-HM3-08?
For technical support, including VTVS11ASMF-HM3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS11ASMF-HM3-08 requirements.
6.How does Aetrix verify that VTVS11ASMF-HM3-08 is sourced from the original manufacturer or authorized distributors?
All VTVS11ASMF-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 VTVS11ASMF-HM3-08 meets industry standards.
7.What is the process for return or replacement of VTVS11ASMF-HM3-08?
All VTVS11ASMF-HM3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS11ASMF-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 VTVS11ASMF-HM3-08 part is unused and in its original packaging.
Return procedure for VTVS11ASMF-HM3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS11ASMF-HM3-08 Tags
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