My Inquiry
My Account
Vishay General Semiconductor - Diodes Division VTVS9V4ASMF-HM3-08
- Part No.:
- VTVS9V4ASMF-HM3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS9V4ASMF-HM3-08.pdf
- Description:
- TVS DIODE 9.4VWM 14.9VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:28,723
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
VTVS9V4ASMF-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 such as USB, HDMI, and automotive sensor interfaces. It features a 9.4 V stand-off voltage (VRWM), 10.5–11.6 V reverse breakdown voltage (VBR) at 1 mA, 14.9 V maximum clamping voltage (VC) at 25.48 A peak pulse current, and ±30 kV IEC 61000-4-2 ESD immunity.
For engineers reviewing the VTVS9V4ASMF-HM3-08 datasheet, VTVS9V4ASMF-HM3-08 pinout, VTVS9V4ASMF-HM3-08 application, or VTVS9V4ASMF-HM3-08 equivalent, key selection criteria include clamping performance under 10/1000 μs transients, low capacitance (1130 pF at 0 V), AEC-Q101 qualification status, halogen-free compliance, and compatibility with SOD-123W footprint layouts.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its 10.5–11.6 V breakdown threshold. Its low-noise design ensures sub-nanosecond response to ESD events, with thermal resistance of 20 K/W (junction-to-lead) enabling reliable power dissipation during 400 W 10/1000 μs pulses.
The device is rated for continuous operation from –55 °C to +175 °C junction temperature and supports wave and reflow soldering per J-STD-020 MSL level 1. Its 1130 pF capacitance at 0 V and 1.08 mm height make it suitable for space-constrained 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; defines maximum transient energy absorption capability) |
| Stand-off Voltage (VRWM) | 9.4 V (maximum continuous reverse operating voltage before leakage exceeds 0.1 μA) |
| Breakdown Voltage (VBR) | 10.5–11.6 V at IT = 1 mA (avalanche initiation range; ±5 % tolerance) |
| Clamping Voltage (VC) | 14.9 V at IPPM = 25.48 A (voltage seen by protected circuit during worst-case surge) |
| Capacitance (CD) | 1130 pF at VR = 0 V, f = 1 MHz (impacts high-frequency signal integrity on data lines) |
| ESD Rating | ±30 kV contact & air discharge per IEC 61000-4-2 (meets industrial and automotive ESD robustness requirements) |
| Operating Temperature | –55 °C to +175 °C (supports under-hood automotive and industrial environments) |
| Package | SMF (DO-219AB); compatible with SOD-123W footprint (enables drop-in layout reuse) |
Pinout & Package
SMF (DO-219AB) package: low-profile surface-mount case with cathode bar marking; dimensions 3.9 × 1.9 × 1.08 mm; halogen-free molding compound; UL 94 V-0 rated; MSL level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (marked side opposite cathode bar) | Reference node for unidirectional clamping | Connected to ground or low-impedance return path; defines polarity of protection path |
| Cathode (bar-marked end) | Protected line input terminal | Connected to signal/power line requiring transient suppression; conducts avalanche current to anode during overvoltage |
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 and industrial systems |
| ±30 kV ESD immunity | Eliminates need for additional ESD stages in USB 2.0, CAN FD, and sensor interface designs |
| 1130 pF capacitance | Preserves signal rise/fall times on 480 Mbps USB 2.0 and 100 Mbps Ethernet PHY lines |
| AEC-Q101 qualified option | VTVS9V4ASMF-HM3-08 includes AEC-Q101 qualification (per ordering code 'H'), enabling use in automotive ECUs without additional reliability screening |
| SOD-123W footprint compatibility | Allows PCB layout reuse across Vishay's eSMP® TVS family, reducing design cycle time for multi-voltage protection schemes |
Applications
| Automotive Sensor Interface | USB 2.0 Data Line Protection |
|---|---|
|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine control modules exposed to load dump and ESD. IC Role / Device Role / Timing Role: Unidirectional transient clamp placed between sensor output and microcontroller ADC input. Use Value: Limits voltage to ≤14.9 V during 25.48 A transients, preventing ADC saturation and latch-up while maintaining <1.1 nF loading on millivolt-level signals. |
Use Scenario: Safeguarding D+ and D– lines of USB 2.0 ports in infotainment head units against hot-plug ESD and cable-induced surges. IC Role / Device Role / Timing Role: Low-capacitance TVS connected directly across differential pair, referenced to chassis ground. Use Value: Clamps ±30 kV ESD strikes within <1 ns while adding only 1130 pF per line-well below USB 2.0's 15 pF max per line requirement when combined with connector parasitics. |
| Industrial PLC Digital I/O | Automotive Camera Link |
|
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from field-wiring induced surges and lightning-induced coupling. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of optocoupler or Schmitt trigger input stage. Use Value: Withstands repeated 400 W transients without parametric shift, ensuring long-term reliability in factory-floor environments with frequent cable disconnect/reconnect cycles. |
Use Scenario: Protecting MIPI CSI-2 lanes between ADAS camera modules and domain controllers against ESD during assembly and service. IC Role / Device Role / Timing Role: Per-lane unidirectional TVS mounted adjacent to FPC connector, minimizing trace inductance. Use Value: 1.08 mm profile enables placement within tight camera module board space; 1130 pF capacitance avoids degrading 1.5 Gbps differential eye diagrams. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Higher VRWM (9.0 V), lower VC (15.4 V at 24.7 A), same 400 W rating, SMA package (larger, 4.5 mm length) | Less suitable for ultra-thin modules due to 2.3 mm height; requires larger PCB area | Select when legacy SMA footprint exists and space constraints are less critical than cost |
| TPSMF9.0A | Same SMF package, 9.0 V VRWM, 10.0–11.1 V VBR, 15.4 V VC at 24.7 A, halogen-free, RoHS-compliant | Lower stand-off voltage reduces margin for 9.4 V nominal rails; identical footprint and mounting | Choose for direct replacement where 9.0 V VRWM suffices and AEC-Q101 is not required |
Compared with VTVS9V4ASMF-HM3-08, SMAJ9.0A trades compactness for broader industry familiarity and lower unit cost, while TPSMF9.0A offers identical packaging but reduced voltage margin-making VTVS9V4ASMF-HM3-08 optimal for 9.4 V systems needing AEC-Q101 validation and precise clamping control.
Availability
VTVS9V4ASMF-HM3-08 is available at Aetrix Electronics and suitable for automotive sensor interfaces, USB 2.0 data line protection, and industrial PLC digital I/O requiring stable component supply, AEC-Q101 qualification, and consistent 1130 pF capacitance performance.
Supply support for VTVS9V4ASMF-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, and passive components for automotive, industrial, and computing markets.
The VTVS eSMP® series delivers compact, high-power TVS diodes optimized for space-constrained ESD and surge protection in automotive ECUs, ADAS cameras, and industrial I/O modules-prioritizing low clamping, fast response, and AEC-Q101 compliance.
FAQ
What is the clamping voltage of VTVS9V4ASMF-HM3-08 under a 10/1000 μs surge?
The VTVS9V4ASMF-HM3-08 has a maximum reverse clamping voltage (VC) of 14.9 V at 25.48 A peak pulse current with a 10/1000 μs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on the protected circuit during worst-case transient events. The VTVS9V4ASMF-HM3-08 maintains this clamping performance across its full operating temperature range of –55 °C to +175 °C.
Is VTVS9V4ASMF-HM3-08 qualified to AEC-Q101?
Yes, VTVS9V4ASMF-HM3-08 includes AEC-Q101 qualification, confirmed by the 'H' in its ordering code (VTVS9V4ASMF-HM3-08). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD robustness, making the VTVS9V4ASMF-HM3-08 suitable for automotive powertrain, body electronics, and ADAS applications without additional reliability screening.
What is the capacitance of VTVS9V4ASMF-HM3-08 and how does it affect high-speed data lines?
The VTVS9V4ASMF-HM3-08 exhibits 1130 pF typical capacitance at 0 V reverse bias and 1 MHz frequency. While higher than some ultra-low-capacitance TVS devices, this value is carefully balanced against 400 W surge capability and remains acceptable for USB 2.0 (480 Mbps) and MIPI CSI-2 (1.5 Gbps) applications when placed with minimal trace length and proper grounding. The VTVS9V4ASMF-HM3-08's capacitance is stable across bias voltage, supporting predictable signal integrity.
Can VTVS9V4ASMF-HM3-08 replace older SMA-package TVS diodes on existing PCBs?
No, VTVS9V4ASMF-HM3-08 uses the SMF (DO-219AB) package-smaller and lower-profile than SMA-and is not a direct footprint replacement. Its 3.9 × 1.9 mm outline differs from SMA's 4.5 × 2.7 mm, requiring PCB layout revision. However, it is compatible with SOD-123W footprints, enabling migration from legacy SOD-123 designs. The VTVS9V4ASMF-HM3-08 offers superior power density and thermal performance versus SMA alternatives.
What is the maximum working voltage (VRWM) and why is it critical for VTVS9V4ASMF-HM3-08 selection?
The VTVS9V4ASMF-HM3-08 has a maximum stand-off voltage (VRWM) of 9.4 V, meaning it remains non-conductive up to this DC or RMS voltage level with leakage <0.1 μA. Selecting a VRWM ≥10–20 % above the nominal line voltage (e.g., 9.4 V for a 7.5–8.5 V rail) prevents false triggering while ensuring sufficient margin before breakdown. This parameter directly determines system reliability in VTVS9V4ASMF-HM3-08-based protection schemes.
VTVS9V4ASMF-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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.9V
- Current - Peak Pulse (10/1000µs):
- 25.48A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 1130pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS9V4ASMF-HM3-08 FAQ
1.How can I place an order for VTVS9V4ASMF-HM3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS9V4ASMF-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 VTVS9V4ASMF-HM3-08 reliable?
The price and inventory of VTVS9V4ASMF-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 VTVS9V4ASMF-HM3-08 is usually 5 days.
3.What payment methods are accepted for VTVS9V4ASMF-HM3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS9V4ASMF-HM3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS9V4ASMF-HM3-08?
VTVS9V4ASMF-HM3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS9V4ASMF-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 VTVS9V4ASMF-HM3-08?
For technical support, including VTVS9V4ASMF-HM3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS9V4ASMF-HM3-08 requirements.
6.How does Aetrix verify that VTVS9V4ASMF-HM3-08 is sourced from the original manufacturer or authorized distributors?
All VTVS9V4ASMF-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 VTVS9V4ASMF-HM3-08 meets industry standards.
7.What is the process for return or replacement of VTVS9V4ASMF-HM3-08?
All VTVS9V4ASMF-HM3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS9V4ASMF-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 VTVS9V4ASMF-HM3-08 part is unused and in its original packaging.
Return procedure for VTVS9V4ASMF-HM3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS9V4ASMF-HM3-08 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
