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Vishay General Semiconductor - Diodes Division VTVS43ASMF-HM3-08
- Part No.:
- VTVS43ASMF-HM3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS43ASMF-HM3-08.pdf
- Description:
- TVS DIODE 43.2VWM 73VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,528
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Product details
Overview
VTVS43ASMF-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 43.2 V stand-off voltage (VRWM), 48.5–53.6 V reverse breakdown voltage (VBR) at 1 mA, and clamps to ≤73 V at 5.23 A peak pulse current (10/1000 μs), with ±30 kV IEC 61000-4-2 contact/air discharge rating.
For engineers reviewing the VTVS43ASMF-HM3-08 datasheet, VTVS43ASMF-HM3-08 pinout, VTVS43ASMF-HM3-08 application, or VTVS43ASMF-HM3-08 equivalent, this device serves as a halogen-free, AEC-Q101-qualified TVS for automotive infotainment power rails, industrial sensor interfaces, and USB-C port protection where low clamping voltage and fast response (<1 ns) are critical.
Technical Context
This unidirectional TVS operates by avalanche breakdown above its VRWM of 43.2 V, delivering precise clamping at VC ≤73 V under 5.23 A (10/1000 μs). Its low 292 pF capacitance at 0 V enables use on high-speed data lines without signal integrity degradation.
The device uses "Low-Noise" technology for sub-nanosecond response time and is qualified to AEC-Q101 for automotive under-hood and cabin applications. Its SMF (DO-219AB) package supports wave and reflow soldering, with MSL level 1 handling and 175 °C max junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W (10/1000 μs waveform - sustains automotive load dump surges) |
| Stand-off Voltage (VRWM) | 43.2 V (maximum continuous reverse working voltage before conduction) |
| Breakdown Voltage (VBR) | 48.5–53.6 V at IT = 1 mA (±5 % tolerance - ensures predictable turn-on threshold) |
| Clamping Voltage (VC) | ≤73 V at IPPM = 5.23 A (limits downstream IC voltage stress during transients) |
| Capacitance (CD) | 292 pF at VR = 0 V, f = 1 MHz (low enough for USB 2.0 and CAN FD bus protection) |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 (meets automotive ESD immunity requirements) |
| Junction Temp Range | −55 °C to +175 °C (supports engine control unit and ADAS module environments) |
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, MSL level 1, compatible with SOD-123W footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during forward conduction | Connected to protected line's lower-potential side (e.g., GND or return path) |
| Cathode | Current exit during reverse-biased clamping | Connected to protected line's higher-potential side (e.g., 43 V supply rail); marked with bar on top surface |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Handles ISO 7637-2 Pulse 1/2a/5a surges in 12 V automotive systems without failure |
| ±5 % VBR tolerance | Ensures tight clamping window across production lots for consistent overvoltage protection |
| 292 pF typical capacitance | Minimizes signal distortion on 480 Mbps USB 2.0 and 5 Mbps CAN FD data lines |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress |
| Halogen-free & RoHS-compliant | Meets EU ELV Directive and OEM sustainability requirements for vehicle electronics |
Applications
| Automotive Infotainment Power Rail | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 43 V supply input to head unit display driver ICs against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between power rail and ground. Use Value: Limits voltage excursion to ≤73 V during 5.23 A surge, preventing latch-up or gate oxide damage in downstream PMICs. |
Use Scenario: Shielding 4–20 mA analog sensor loop inputs from ESD events in factory automation PLC modules. IC Role / Device Role / Timing Role: Standoff-mode protector absorbing ±30 kV contact discharge before reaching op-amp input stage. Use Value: 292 pF capacitance avoids gain error or phase shift in precision 24-bit ADC front-ends operating at <10 kHz bandwidth. |
| USB-C Port VBUS Line | Automotive Body Control Module (BCM) |
Use Scenario: Safeguarding USB-C receptacle VBUS (up to 48 V PD) against hot-plug surges and cable-induced transients. IC Role / Device Role / Timing Role: Primary clamping element on VBUS path, upstream of USB PD controller. Use Value: Fast response (<1 ns) and low clamping voltage preserve USB PD negotiation integrity during repeated ESD strikes. |
Use Scenario: Protecting LIN bus transceiver power pins from battery reversal and alternator ripple in BCM microcontrollers. IC Role / Device Role / Timing Role: Reverse-polarity and surge suppression diode on 12 V supply input. Use Value: −55 °C to +175 °C operation ensures reliability in under-dash mounting locations with wide thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A | Same VRWM (43 V) and PPPM (400 W), but SMA package (DO-214AC); 1.5× larger footprint; 100 pF higher capacitance (392 pF) | Less suitable for space-constrained USB-C or automotive camera modules due to larger size and higher CD | Select when legacy SMA layout exists and capacitance sensitivity is low |
| VTVS43GSMF-HM3-08 | Identical package and VRWM, but ±2 % VBR tolerance (vs. ±5 %); tighter breakdown spec increases cost and reduces availability | Better for precision clamping in safety-critical ADAS power domains where VBR consistency is mandated | Choose only if design requires guaranteed VBR ≤52.08 V at 1 mA; otherwise VTVS43ASMF-HM3-08 offers optimal cost/performance balance |
Compared with SMAJ43A and VTVS43GSMF-HM3-08, the VTVS43ASMF-HM3-08 delivers the best trade-off of compact DO-219AB footprint, 292 pF low capacitance, and AEC-Q101 qualification-making it preferred for next-gen automotive and high-density industrial PCBs where layout area and signal integrity are constrained.
Availability
VTVS43ASMF-HM3-08 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor nodes, and USB-C power delivery designs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for VTVS43ASMF-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 high-speed, high-surge protection in space-limited applications-designed specifically for automotive electronics, industrial IoT sensors, and portable power interfaces demanding AEC-Q101 compliance and low parasitic capacitance.
FAQ
What is the maximum clamping voltage of the VTVS43ASMF-HM3-08 under standard test conditions?
The VTVS43ASMF-HM3-08 has a maximum reverse clamping voltage (VC) of 73 V when subjected to a 10/1000 μs peak pulse current of 5.23 A. This value is measured per IEC 61000-4-5 and ensures downstream circuitry remains within safe operating limits during surge events. The VTVS43ASMF-HM3-08 achieves this clamping performance while maintaining low leakage and fast response.
Is the VTVS43ASMF-HM3-08 qualified for automotive applications?
Yes, the VTVS43ASMF-HM3-08 is AEC-Q101 qualified, meaning it has passed rigorous stress tests-including high-temperature reverse bias, temperature cycling, and ESD robustness-required for automotive electronic components. Its −55 °C to +175 °C operating range and halogen-free construction align with Tier 1 supplier requirements for body control, infotainment, and ADAS subsystems using the VTVS43ASMF-HM3-08.
What does the "HM3-08" suffix indicate in VTVS43ASMF-HM3-08?
The "HM3-08" suffix denotes RoHS-compliant, lead-free terminations (H), halogen-free molding compound (M), 3 k per 7″ reel packaging (3), and tape-and-reel format optimized for automated SMT placement (08). This matches Vishay's standardized ordering code structure for the eSMP® Series, confirming the VTVS43ASMF-HM3-08 is supplied in 8 mm carrier tape with 3,000 units per reel and meets JEDEC MSL level 1 handling requirements.
Can the VTVS43ASMF-HM3-08 be used for bidirectional protection?
No, the VTVS43ASMF-HM3-08 is a unidirectional TVS diode, intended only for DC line protection with defined polarity (cathode toward the protected supply rail). For bidirectional AC or symmetrical transient protection, a dedicated bidirectional variant such as VTVS43BSMF-HM3-08 would be required. Using the VTVS43ASMF-HM3-08 in reverse-biased configurations outside its specified unidirectional operation risks premature failure or inadequate clamping.
How does the 292 pF capacitance of VTVS43ASMF-HM3-08 affect high-speed signal lines?
The VTVS43ASMF-HM3-08's typical 292 pF capacitance at 0 V is low enough to avoid significant attenuation or timing skew on moderate-speed digital lines such as USB 2.0 (480 Mbps), CAN FD (5 Mbps), and RS-485. When placed on VBUS or auxiliary power rails-not data pairs-it introduces negligible impedance impact. For differential data lines, the VTVS43ASMF-HM3-08 should be applied only to power/supply pins, preserving signal integrity while providing robust surge immunity.
VTVS43ASMF-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):
- 43.2V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 73V
- Current - Peak Pulse (10/1000µs):
- 5.23A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 292pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS43ASMF-HM3-08 FAQ
1.How can I place an order for VTVS43ASMF-HM3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS43ASMF-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 VTVS43ASMF-HM3-08 reliable?
The price and inventory of VTVS43ASMF-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 VTVS43ASMF-HM3-08 is usually 5 days.
3.What payment methods are accepted for VTVS43ASMF-HM3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS43ASMF-HM3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS43ASMF-HM3-08?
VTVS43ASMF-HM3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS43ASMF-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 VTVS43ASMF-HM3-08?
For technical support, including VTVS43ASMF-HM3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS43ASMF-HM3-08 requirements.
6.How does Aetrix verify that VTVS43ASMF-HM3-08 is sourced from the original manufacturer or authorized distributors?
All VTVS43ASMF-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 VTVS43ASMF-HM3-08 meets industry standards.
7.What is the process for return or replacement of VTVS43ASMF-HM3-08?
All VTVS43ASMF-HM3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS43ASMF-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 VTVS43ASMF-HM3-08 part is unused and in its original packaging.
Return procedure for VTVS43ASMF-HM3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS43ASMF-HM3-08 Tags
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