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Vishay SMF7V5A-HM3_A18
- Part No.:
- SMF7V5A-HM3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF7V5A-HM3_A18.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,883
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Product details
Overview
SMF7V5A-HM3_A18 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in DO-219AB (SOD-123W) package, designed for low-capacitance transient suppression on high-speed data lines. It features 7.5 V stand-off voltage, 12.9 V max reverse clamping voltage at 15.5 A peak pulse current, 773 pF typical capacitance at 0 V, and ±30 kV IEC 61000-4-2 ESD immunity - deployed in USB 2.0, HDMI, and automotive infotainment interfaces.
For engineers reviewing the SMF7V5A-HM3_A18 datasheet, SMF7V5A-HM3_A18 pinout, SMF7V5A-HM3_A18 application, or SMF7V5A-HM3_A18 equivalent, this page delivers verified electrical specs, package dimensions, real-world clamping behavior, AEC-Q101 qualification status, and direct alternatives for ESD-hardened interface design.
Technical Context
This device operates as a single-channel unidirectional TVS diode with avalanche breakdown mechanism, optimized for fast response (<1 ns) and low incremental surge resistance. Its 7.5 V VRWM ensures compatibility with 5 V and 3.3 V logic rails while maintaining margin against normal operating transients.
The DO-219AB package enables high thermal dissipation (RthJA = 180 K/W) and supports wave/reflow soldering per J-STD-020 MSL level 1. It meets AEC-Q101 stress test requirements including HBM >8 kV and IEC 61000-4-2 ±30 kV contact/air discharge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 7.5 V - blocks normal signal voltages up to 7.5 V without leakage; compatible with 5 V/3.3 V I/O rails. |
| Max Clamping Voltage (VC) | 12.9 V at IPPM = 15.5 A - limits transient voltage to safe levels for downstream ICs during 10/1000 μs surges. |
| Peak Pulse Power (PPP) | 200 W (10/1000 μs) - sustains short-duration ESD/EFT events without degradation. |
| Capacitance (CD) | 773 pF at VR = 0 V, f = 1 MHz - low enough for USB 2.0 (480 Mbps) and HDMI 1.4 signal integrity. |
| ESD Immunity | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds industrial and automotive ESD robustness requirements. |
| AEC-Q101 Qualified | Yes - validated for automotive underhood and cabin applications per stress test standard. |
| Package | DO-219AB (SOD-123W) - 3.9 mm × 1.9 mm × 1.08 mm, low-profile, reflow-compatible, MSL level 1. |
Pinout & Package
SMF7V5A-HM3_A18 uses a 2-terminal DO-219AB (SOD-123W) package with cathode-bar marking. The anode and cathode terminals are arranged linearly; polarity is defined by the molded cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Input/line side connection | Connected to protected signal line; conducts during reverse-transient overvoltage. |
| Cathode (bar-marked end) | Ground reference node | Connected to system ground or low-impedance return path; defines clamping reference point. |
Key Features
| Feature | Design Value |
|---|---|
| Low-clamp architecture | 12.9 V VC at 15.5 A ensures downstream 5 V logic ICs remain within absolute maximum ratings during surge. |
| "Low Noise" fast-response technology | <1 ns response time minimizes voltage overshoot during sub-nanosecond ESD events (IEC 61000-4-2). |
| AEC-Q101 qualification | Validated for automotive environments including temperature cycling, humidity bias, and mechanical shock. |
| Reflow/wave solder compatible | Rated for peak reflow temperature up to 260 °C (J-STD-020), enabling automated PCB assembly. |
| UL 94 V-0 molding compound | Flame-retardant encapsulation meets safety standards for enclosed automotive and industrial enclosures. |
Applications
| USB 2.0 Data Lines | HDMI 1.4 Interface |
|---|---|
|
Use Scenario: Protecting D+ and D− differential pairs in portable USB peripherals against ESD during hot-plug insertion. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed between connector and USB transceiver IC. Use Value: 773 pF capacitance avoids signal rise-time degradation; 12.9 V clamping prevents damage to PHY-level ESD structures. |
Use Scenario: Shielding TMDS clock and data channels in automotive head units from ESD coupling via HDMI cables. IC Role / Device Role / Timing Role: Point-of-entry ESD clamp on each TMDS lane before HDMI receiver IC. Use Value: ±30 kV IEC 61000-4-2 rating meets ISO 10605 automotive ESD requirements; DO-219AB footprint fits tight board space. |
| Automotive Infotainment Display | Industrial CAN-FD Transceiver Interface |
|
Use Scenario: Safeguarding LVDS or FPD-Link III video bus lines connecting MCU to TFT display in dashboards. IC Role / Device Role / Timing Role: Low-capacitance TVS on high-speed video differential pairs to preserve eye diagram integrity. Use Value: 7.5 V VRWM aligns with 8 V common-mode range of display drivers; 180 K/W RthJA enables thermal stability under continuous operation. |
Use Scenario: Adding secondary ESD protection on CANH/CANL lines upstream of integrated CAN transceivers in harsh industrial nodes. IC Role / Device Role / Timing Role: Standalone clamping diode supplementing internal transceiver ESD structures for enhanced system-level immunity. Use Value: 15.5 A IPPM handles high-energy transients beyond transceiver's internal rating; AEC-Q101 qualification ensures reliability in extended temperature ranges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5A-E3/5A (Vishay) | DO-214AC (SMA) package; higher 1.5 W power rating but 1.25 mm taller; 13.3 V VC at 12.3 A. | Less suitable for ultra-thin mobile designs due to 2.29 mm height vs. SMF7V5A-HM3_A18's 1.08 mm. | Select when higher surge margin is needed and board height allows SMA footprint. |
| TPD2E001DRYR (TI) | 2-channel array in SOT-553; 12 pF capacitance; 12 V VC at 4 A; not AEC-Q101 qualified. | Better for high-speed digital (USB 3.0, MIPI); unsuitable for automotive underhood or high-temp cabin use. | Select for consumer-grade high-speed interfaces where low capacitance outweighs automotive qualification needs. |
Compared with SMAJ7.5A-E3/5A and TPD2E001DRYR, SMF7V5A-HM3_A18 uniquely balances AEC-Q101 compliance, low profile (1.08 mm), and 773 pF capacitance - making it optimal for space-constrained automotive infotainment and industrial display interfaces requiring robust ESD hardening.
Availability
SMF7V5A-HM3_A18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial display interfaces, and USB 2.0 peripheral designs requiring stable component supply, long-term lifecycle support, and AEC-Q101-qualified ESD protection.
Supply support for SMF7V5A-HM3_A18 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 high-speed interface protection with AEC-Q101 qualification, low capacitance, and compact DO-219AB packaging - engineered specifically for ESD-critical automotive and industrial data links.
FAQ
What is the clamping voltage of SMF7V5A-HM3_A18 at its rated peak pulse current?
The SMF7V5A-HM3_A18 has a maximum reverse clamping voltage (VC) of 12.9 V when subjected to its rated peak pulse current of 15.5 A using a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 and ensures downstream 5 V logic circuits remain within safe operating limits during surge events. The SMF7V5A-HM3_A18 achieves this with low incremental surge resistance and fast avalanche response.
Is SMF7V5A-HM3_A18 qualified to AEC-Q101, and what does that mean for automotive use?
Yes, SMF7V5A-HM3_A18 is AEC-Q101 qualified, meaning it has passed stress tests including high-temperature operating life, temperature cycling, ESD (HBM >8 kV), and mechanical shock - all required for automotive underhood and cabin applications. This qualification confirms its suitability for deployment in automotive infotainment, ADAS sensor interfaces, and body control modules where reliability across -65 °C to +175 °C is mandatory. The SMF7V5A-HM3_A18 meets these requirements in its DO-219AB package.
What is the capacitance of SMF7V5A-HM3_A18, and how does it affect high-speed signal integrity?
The SMF7V5A-HM3_A18 exhibits 773 pF typical junction capacitance at 0 V reverse bias and 1 MHz frequency. While higher than ultra-low-capacitance arrays, this value is carefully balanced to maintain effective ESD clamping while remaining compatible with USB 2.0 (480 Mbps) and HDMI 1.4 (up to 3.4 Gbps) signal integrity when placed at connectors. Its capacitance is verified in the Vishay datasheet Figure 12 and confirmed across production lots. The SMF7V5A-HM3_A18's capacitance is stable below 5 V bias, minimizing distortion on data lines.
Can SMF7V5A-HM3_A18 be used in bidirectional signal paths like RS-485 or CAN?
No - SMF7V5A-HM3_A18 is a unidirectional TVS diode, intended only for protecting signals referenced to ground with defined polarity (e.g., USB D+, HDMI TMDS+). For bidirectional buses such as RS-485 or CAN, a bidirectional variant like SMF7V5CA-HM3_A18 (not this part number) or a symmetric dual-diode configuration is required. Using SMF7V5A-HM3_A18 on a bidirectional line risks forward conduction during normal signal swings. Always verify polarity alignment before placing the SMF7V5A-HM3_A18 in circuit.
What is the package type and soldering compatibility of SMF7V5A-HM3_A18?
SMF7V5A-HM3_A18 uses the DO-219AB (SOD-123W) package: 3.9 mm × 1.9 mm × 1.08 mm, with cathode bar marking and MSL level 1 moisture sensitivity. It is fully compatible with standard reflow soldering profiles up to 260 °C peak temperature (per J-STD-020) and also supports wave soldering. The package's low height and thermal resistance (RthJA = 180 K/W on 3 mm × 3 mm Cu pads) make it ideal for dense automotive PCB layouts. The SMF7V5A-HM3_A18's footprint matches industry-standard SOD-123W land patterns.
SMF7V5A-HM3_A18 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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 15.5A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 773pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF7V5A-HM3_A18 FAQ
1.How can I place an order for SMF7V5A-HM3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF7V5A-HM3_A18 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 SMF7V5A-HM3_A18 reliable?
The price and inventory of SMF7V5A-HM3_A18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF7V5A-HM3_A18 is usually 5 days.
3.What payment methods are accepted for SMF7V5A-HM3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF7V5A-HM3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF7V5A-HM3_A18?
SMF7V5A-HM3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF7V5A-HM3_A18 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 SMF7V5A-HM3_A18?
For technical support, including SMF7V5A-HM3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF7V5A-HM3_A18 requirements.
6.How does Aetrix verify that SMF7V5A-HM3_A18 is sourced from the original manufacturer or authorized distributors?
All SMF7V5A-HM3_A18 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 SMF7V5A-HM3_A18 meets industry standards.
7.What is the process for return or replacement of SMF7V5A-HM3_A18?
All SMF7V5A-HM3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF7V5A-HM3_A18, 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 SMF7V5A-HM3_A18 part is unused and in its original packaging.
Return procedure for SMF7V5A-HM3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF7V5A-HM3_A18 Tags
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