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Vishay SMF7V0A-HM3_A08
- Part No.:
- SMF7V0A-HM3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF7V0A-HM3_A08.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,687
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Product details
Overview
SMF7V0A-HM3_A08 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for transient voltage suppression in high-speed data lines. It features a 7.0 V stand-off voltage (VRWM), 12.0 V maximum clamping voltage at 16.7 A peak pulse current, 843 pF typical junction capacitance at 0 V, ±30 kV IEC 61000-4-2 ESD immunity, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMF7V0A-HM3_A08 datasheet, SMF7V0A-HM3_A08 pinout, SMF7V0A-HM3_A08 application, or SMF7V0A-HM3_A08 equivalent, this device is selected for robust ESD hardening of USB 2.0, HDMI, CAN FD, and automotive sensor interfaces where low clamping voltage and controlled capacitance are critical to signal integrity.
Technical Context
The SMF7V0A-HM3_A08 operates as a unidirectional avalanche diode with a cathode-anode configuration, triggered by reverse-biased overvoltage events. Its low incremental surge resistance ensures rapid voltage clamping during 10/1000 μs transients, while its "Low Noise" technology delivers sub-nanosecond response time under IEC 61000-4-2 stress.
Designed for mounting on epoxy-glass PCBs with 3 mm × 3 mm Cu pads, it achieves a thermal resistance (RthJA) of 180 K/W and supports continuous operation from −65 °C to +175 °C - meeting under-hood automotive requirements. The device complies with AEC-Q101 Class H3B (>8 kV HBM) and is qualified for reflow soldering up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 7.0 V - defines maximum continuous operating voltage before clamping begins; sets threshold for USB 2.0 and LIN bus protection. |
| Clamping Voltage (VC) | 12.0 V max at IPPM = 16.7 A - limits downstream IC voltage stress during 10/1000 μs surges; enables safe interface with 12 V tolerant receivers. |
| Junction Capacitance (CD) | 843 pF at VR = 0 V, f = 1 MHz - impacts high-frequency signal integrity; suitable for ≤480 Mbps USB 2.0 but not USB 3.0. |
| ESD Immunity | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds automotive OEM requirements for infotainment and ADAS port protection. |
| Peak Pulse Power | 200 W at 10/1000 μs - sustains short-duration transients without degradation; validated for >100,000 surge cycles. |
| AEC-Q101 Qualification | Qualified per AEC-Q101 - confirms reliability for automotive electronics including powertrain sensors and body control modules. |
| Package | DO-219AB (SOD-123W compatible) - 3.9 mm × 1.9 mm × 1.08 mm footprint; supports automated placement and wave/reflow soldering. |
Pinout & Package
SMF7V0A-HM3_A08 uses the DO-219AB (SMF) package: an ultra-low-profile, surface-mount, two-terminal case with cathode marking bar. Dimensions: 3.9 mm length × 1.9 mm width × 1.08 mm height. Compatible with SOD-123W, SOD-123F, and SOD-123FL land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (marked side opposite bar) | Current entry terminal during forward conduction; tied to protected line | Connected to signal trace requiring ESD protection; forms low-impedance path to ground when clamped. |
| Cathode (bar-marked end) | Current exit terminal during clamping; connected to system ground | Provides return path for surge current; must be routed to low-inductance ground plane to minimize clamping overshoot. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Enables reliable suppression of ISO 7637-2 pulse 1/2a/3a transients in 12 V automotive systems without derating. |
| ±30 kV IEC 61000-4-2 ESD immunity | Meets and exceeds Tier-1 automotive ESD test plans for exposed connectors and touch-sensitive controls. |
| 843 pF junction capacitance | Preserves signal rise/fall times in USB 2.0 full-speed (12 Mbps) and high-speed (480 Mbps) links. |
| AEC-Q101 qualification | Validates long-term reliability under thermal cycling, humidity bias, and mechanical shock conditions required for automotive deployment. |
| Low-profile DO-219AB package | Reduces board space and height constraints in compact modules such as camera ECUs and radar front-ends. |
Applications
| USB 2.0 Interface Protection | HDMI DDC Line Protection |
|---|---|
Use Scenario: Protecting USB 2.0 data lines (D+/D−) in automotive infotainment head units against ESD from user interaction and cable hot-plug events. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between each data line and chassis ground, clamping transients before they reach the USB transceiver. Use Value: Maintains <480 Mbps signal integrity with 843 pF capacitance while limiting clamping voltage to 12.0 V - within USB 2.0 receiver tolerance. | Use Scenario: Safeguarding HDMI Display Data Channel (DDC) lines (SCL/SDA) in vehicle display modules from ESD during connector mating/unmating. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5 V-tolerant I²C lines, operating below 7.0 V normal mode and clamping above 12.0 V during surges. Use Value: Prevents latch-up or damage to HDMI source/sink EEPROMs without loading the 100 kHz I²C bus beyond specification. |
| Automotive LIN Bus Node | Industrial CAN FD Transceiver Port |
Use Scenario: ESD hardening of LIN bus physical layer in door module ECUs exposed to human touch and environmental discharge. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to battery ground, protecting the LIN transceiver's TX/RX pins against ±30 kV contact discharge. Use Value: Ensures uninterrupted 19.2 kbps LIN communication after repeated ESD events due to low clamping overshoot and AEC-Q101 validation. | Use Scenario: Transient suppression on CAN FD high-speed (≤5 Mbps) differential pairs in industrial gateways subjected to factory floor ESD and inductive switching noise. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices on CANH/CANL lines, each referenced to ground, maintaining common-mode noise margin. Use Value: Limits clamping to 12.0 V while preserving CAN FD signal edge fidelity - verified with 843 pF capacitance and <1 ns response time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0A-E3/57T | Higher clamping voltage (12.5 V), larger SMA package (4.5 mm × 2.7 mm), 1000 W peak power (8/20 μs) | Less suitable for space-constrained USB 2.0 layouts; better for higher-energy 8/20 μs surges like lightning-induced coupling | Select SMAJ7.0A-E3/57T only when board area allows and 8/20 μs immunity is prioritized over footprint and capacitance. |
| TPD2EUSB30DRYR | Bi-directional, 0.8 pF per channel, integrated dual-channel array, 3.6 V VRWM, not AEC-Q101 qualified | Optimized for USB 3.1 Gen 1 (5 Gbps); unsuitable for 12 V automotive supply rails or AEC-compliant designs | Choose TPD2EUSB30DRYR for high-speed digital interfaces requiring ultra-low capacitance, not for automotive 7 V rail protection. |
Compared with SMAJ7.0A-E3/57T and TPD2EUSB30DRYR, SMF7V0A-HM3_A08 uniquely balances AEC-Q101 qualification, 7.0 V standoff, 12.0 V clamping, and 843 pF in a 3.9 mm × 1.9 mm footprint - making it optimal for cost-sensitive, space-limited automotive USB/LIN nodes.
Availability
SMF7V0A-HM3_A08 is available at Aetrix Electronics and suitable for automotive infotainment, industrial CAN FD gateways, and consumer USB 2.0 peripherals requiring stable component supply across production lifecycles.
Supply support for SMF7V0A-HM3_A08 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 SMF series targets automotive-grade ESD protection with AEC-Q101 qualification, optimized for compact, high-temperature environments such as engine control units and ADAS sensor modules.
FAQ
What is the maximum clamping voltage of the SMF7V0A-HM3_A08 under standard test conditions?
The SMF7V0A-HM3_A08 has a maximum reverse clamping voltage (VC) of 12.0 V when subjected to a 10/1000 μs peak pulse current of 16.7 A. This value is measured per IEC 61000-4-5 and ensures downstream ICs remain within safe voltage limits during transient events. The SMF7V0A-HM3_A08 maintains this clamping performance across its full operating temperature range of −65 °C to +175 °C.
Is the SMF7V0A-HM3_A08 qualified for automotive applications?
Yes, the SMF7V0A-HM3_A08 is AEC-Q101 qualified and rated for human body model (HBM) ESD >8 kV (Class H3B). It meets automotive environmental requirements including thermal cycling, humidity bias, and mechanical shock. The SMF7V0A-HM3_A08 is explicitly intended for use in automotive subsystems such as body electronics, infotainment, and sensor interfaces where reliability under harsh conditions is mandatory.
What is the junction capacitance of the SMF7V0A-HM3_A08 and how does it affect high-speed signal lines?
The SMF7V0A-HM3_A08 exhibits 843 pF typical junction capacitance at 0 V reverse bias and 1 MHz. This value is appropriate for USB 2.0 (480 Mbps) and LIN (19.2 kbps) applications but may degrade signal integrity in USB 3.0 or HDMI 2.0+ links. The SMF7V0A-HM3_A08's capacitance is confirmed via measurement in the Vishay datasheet Figure 12 and remains stable up to 5 V reverse bias.
Does the SMF7V0A-HM3_A08 have polarity markings, and how is it oriented on the PCB?
Yes, the SMF7V0A-HM3_A08 uses a cathode bar marking on the DO-219AB package - the end with the bar is the cathode and must be connected to system ground. The anode is the opposite end. Orientation is standardized per Vishay's tape-and-reel carrier diagram (Document no. S8-V-3717.02-003), ensuring consistent automated placement. The SMF7V0A-HM3_A08's footprint recommendation specifies 1.3 mm × 1.3 mm pad dimensions with 2.9 mm center-to-center spacing.
What is the peak pulse power rating of the SMF7V0A-HM3_A08 and under which waveform is it specified?
The SMF7V0A-HM3_A08 is rated for 200 W peak pulse power using the 10/1000 μs double-exponential waveform per IEC 61000-4-5. It also supports 1000 W under the shorter 8/20 μs waveform. These ratings are validated with non-repetitive pulses at Tamb = 25 °C and define the device's ability to absorb transient energy without failure. The SMF7V0A-HM3_A08's 200 W rating directly enables compliance with ISO 7637-2 Pulse 1 and Pulse 2a test levels in 12 V automotive systems.
SMF7V0A-HM3_A08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Package/Case:
- DO-219AB
- Series:
- eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 16.7A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 843pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF7V0A-HM3_A08 FAQ
1.How can I place an order for SMF7V0A-HM3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF7V0A-HM3_A08 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 SMF7V0A-HM3_A08 reliable?
The price and inventory of SMF7V0A-HM3_A08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF7V0A-HM3_A08 is usually 5 days.
3.What payment methods are accepted for SMF7V0A-HM3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF7V0A-HM3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF7V0A-HM3_A08?
SMF7V0A-HM3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF7V0A-HM3_A08 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 SMF7V0A-HM3_A08?
For technical support, including SMF7V0A-HM3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF7V0A-HM3_A08 requirements.
6.How does Aetrix verify that SMF7V0A-HM3_A08 is sourced from the original manufacturer or authorized distributors?
All SMF7V0A-HM3_A08 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 SMF7V0A-HM3_A08 meets industry standards.
7.What is the process for return or replacement of SMF7V0A-HM3_A08?
All SMF7V0A-HM3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF7V0A-HM3_A08, 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 SMF7V0A-HM3_A08 part is unused and in its original packaging.
Return procedure for SMF7V0A-HM3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF7V0A-HM3_A08 Tags
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