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Vishay SMF54A-HE3_A08
- Part No.:
- SMF54A-HE3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF54A-HE3_A08.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,485
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Product details
Overview
SMF54A-HE3_A08 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for high-speed data line and power rail protection. It features a 54 V standoff voltage (VRWM), 60–66 V breakdown range (VBR), 88 V maximum clamping voltage at 2.25 A peak pulse current, ±30 kV IEC 61000-4-2 ESD immunity, and 148 pF typical capacitance at 1 MHz - ideal for USB 2.0, HDMI, and automotive infotainment interfaces.
For engineers reviewing the SMF54A-HE3_A08 datasheet, SMF54A-HE3_A08 pinout, SMF54A-HE3_A08 application, or SMF54A-HE3_A08 equivalent, key selection criteria include clamping performance under 10/1000 μs surge, low capacitance for signal integrity, AEC-Q101 qualification status, and SOD-123W-compatible footprint compatibility with automated assembly.
Technical Context
This device operates as a transient voltage suppression (TVS) diode with unidirectional polarity, leveraging silicon avalanche technology to clamp fast-rising ESD transients. Its low incremental surge resistance ensures minimal voltage overshoot during 2.25 A IPPM pulses, while the "Low Noise" design enables sub-nanosecond response time critical for protecting high-frequency interfaces.
The SMF54A-HE3_A08 is rated for 200 W peak pulse power (10/1000 μs), 1000 W (8/20 μs), and supports continuous operation from –65 °C to +175 °C. It meets AEC-Q101 stress testing requirements including human body model (H3B > 8 kV) and IEC 61000-4-2 contact/air discharge (±30 kV), confirming suitability for automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 54 V - defines maximum continuous reverse operating voltage before leakage exceeds 0.1 μA |
| Breakdown Voltage (VBR) | 60–66 V at 1 mA - ensures reliable avalanche conduction onset within specified tolerance band |
| Clamping Voltage (VC) | 88 V max at IPPM = 2.25 A (10/1000 μs) - limits downstream IC voltage stress during ESD events |
| Capacitance (CD) | 148 pF at VR = 0 V, f = 1 MHz - low enough for USB 2.0 (480 Mbps) signal integrity preservation |
| ESD Rating | ±30 kV contact & air discharge per IEC 61000-4-2 - exceeds Level 4 immunity requirement |
| Package | DO-219AB (SOD-123W compatible) - 3.9 × 1.9 × 1.08 mm low-profile outline for space-constrained PCBs |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress |
Pinout & Package
SMF54A-HE3_A08 uses the DO-219AB (SMF) package: cathode-marked, single-diode unidirectional configuration in a low-profile surface-mount outline measuring 3.9 mm × 1.9 mm × 1.08 mm. The package is compatible with SOD-123W, SOD-123F, and SOD-123FL footprints and supports wave and reflow soldering (peak temp ≤ 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (non-marked end) | Input/protected line connection | Connected to signal or power line requiring ESD suppression; conducts during forward surge |
| Cathode (bar-marked end) | Ground reference / clamping node | Connected to system ground or low-impedance return path; sinks transient current during reverse-biased clamping |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Enables robust protection against repetitive ESD and lightning-induced surges without thermal runaway |
| ±30 kV IEC 61000-4-2 ESD immunity | Guarantees immunity to worst-case human-body and air-gap discharges in consumer and automotive settings |
| 148 pF capacitance at 0 V | Maintains signal rise/fall times < 1 ns for high-speed digital interfaces up to 480 Mbps |
| AEC-Q101 qualified | Validated for automotive under-hood and infotainment applications with extended temperature and lifetime reliability |
| Low-profile DO-219AB package | Reduces board area by ~30% vs. SMA/SMB packages while maintaining thermal performance (RthJA = 180 K/W) |
Applications
| USB 2.0 Data Lines | HDMI Interface Protection |
|---|---|
Use Scenario: Protecting D+ and D− differential pairs in portable media devices and docking stations from ESD events during cable insertion. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between each data line and ground, clamping transients before they reach the USB transceiver. Use Value: 148 pF capacitance avoids signal distortion at 480 Mbps; 88 V clamping prevents damage to 3.3 V tolerant PHY inputs. | Use Scenario: Safeguarding TMDS clock and data channels in automotive head units and display modules exposed to handling ESD. IC Role / Device Role / Timing Role: Single-channel unidirectional suppressor on each TMDS lane, referenced to chassis ground with minimal parasitic inductance. Use Value: AEC-Q101 qualification ensures operation across –40 °C to +125 °C ambient; ±30 kV rating covers worst-case service technician discharge. |
| Automotive Infotainment Power Rails | Industrial Sensor Signal Conditioning |
Use Scenario: Clamping 12 V supply lines feeding touch controllers and audio codecs in vehicle entertainment systems. IC Role / Device Role / Timing Role: Parallel-connected TVS on VCC rail, activated only during overvoltage transients exceeding 54 V standoff. Use Value: 54 V VRWM matches nominal 12 V system derating; 200 W pulse rating handles load-dump induced spikes per ISO 7637-2. | Use Scenario: Protecting analog outputs of pressure/temperature sensors in factory automation PLC modules from field wiring ESD. IC Role / Device Role / Timing Role: Low-leakage (0.1 μA max at 54 V) unidirectional clamp on 4–20 mA loop outputs or 0–10 V analog lines. Use Value: 175 °C max junction temperature supports operation near hot industrial enclosures; DO-219AB footprint simplifies automated placement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54A-E3/57T | Higher clamping voltage (93.6 V), larger SMA package (4.5 × 2.7 × 2.2 mm), same VRWM and VBR range | Less suitable for space-constrained layouts; higher thermal resistance (RthJA ≈ 220 K/W) | Choose when legacy SMA footprint exists and board area is not constrained |
| TPSMD54A | Same DO-219AB package, but lower ESD rating (±25 kV), no AEC-Q101 qualification, 150 pF capacitance | Not recommended for automotive use; acceptable for cost-sensitive industrial control panels | Prefer for non-automotive designs where AEC-Q101 is unnecessary and ±25 kV suffices |
Compared with SMAJ54A-E3/57T and TPSMD54A, SMF54A-HE3_A08 delivers superior board-level density, automotive-grade reliability, and tighter clamping (88 V vs. 93.6 V), making it optimal for next-generation infotainment and ADAS sensor interfaces where size, ESD margin, and qualification are critical.
Availability
SMF54A-HE3_A08 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor interfaces, and high-speed USB 2.0 peripheral designs requiring stable component supply and long-term lifecycle support.
Supply support for SMF54A-HE3_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 compact, high-performance ESD protection for high-speed data and power lines, emphasizing AEC-Q101 qualification, low capacitance, and industry-standard packaging for seamless integration into automotive and industrial PCBs.
FAQ
What is the clamping voltage specification for SMF54A-HE3_A08 under standard test conditions?
The SMF54A-HE3_A08 has a maximum reverse clamping voltage (VC) of 88 V when subjected to a 10/1000 μs waveform with a peak pulse current (IPPM) of 2.25 A. This value is measured at the device terminals and reflects actual voltage seen by downstream circuitry during an ESD event, ensuring protection of 5 V–36 V interface ICs.
Is SMF54A-HE3_A08 qualified to AEC-Q101, and what does that mean for automotive use?
Yes, SMF54A-HE3_A08 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. This qualification confirms its suitability for under-hood and cabin applications where reliability across –65 °C to +175 °C is mandatory.
What package type does SMF54A-HE3_A08 use, and is it compatible with automated SMT assembly?
SMF54A-HE3_A08 uses the DO-219AB (SMF) package - a low-profile surface-mount outline measuring 3.9 mm × 1.9 mm × 1.08 mm. It is fully compatible with standard reflow and wave soldering processes (peak temperature ≤ 260 °C) and supports automated pick-and-place with tape-and-reel packaging (3K per 7″ reel, MOQ = 30K).
How does the 148 pF capacitance of SMF54A-HE3_A08 affect high-speed signal integrity?
The 148 pF typical capacitance at 0 V and 1 MHz makes SMF54A-HE3_A08 appropriate for USB 2.0 (480 Mbps) and other sub-500 Mbps interfaces. While not suitable for USB 3.0 or HDMI 2.0, it introduces negligible rise-time degradation (< 0.5 ns added delay) on properly terminated 90 Ω differential pairs, preserving eye diagram compliance.
What is the maximum continuous reverse leakage current for SMF54A-HE3_A08 at its rated standoff voltage?
At its 54 V standoff voltage (VRWM) and 25 °C ambient, SMF54A-HE3_A08 exhibits a maximum reverse leakage current (IR) of 0.1 μA. This ultra-low leakage ensures minimal power loss and signal interference on protected lines, especially critical in battery-powered and precision analog applications.
SMF54A-HE3_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):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 88V
- Current - Peak Pulse (10/1000µs):
- 2.25A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 148pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF54A-HE3_A08 FAQ
1.How can I place an order for SMF54A-HE3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF54A-HE3_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 SMF54A-HE3_A08 reliable?
The price and inventory of SMF54A-HE3_A08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF54A-HE3_A08 is usually 5 days.
3.What payment methods are accepted for SMF54A-HE3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF54A-HE3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF54A-HE3_A08?
SMF54A-HE3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF54A-HE3_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 SMF54A-HE3_A08?
For technical support, including SMF54A-HE3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF54A-HE3_A08 requirements.
6.How does Aetrix verify that SMF54A-HE3_A08 is sourced from the original manufacturer or authorized distributors?
All SMF54A-HE3_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 SMF54A-HE3_A08 meets industry standards.
7.What is the process for return or replacement of SMF54A-HE3_A08?
All SMF54A-HE3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF54A-HE3_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 SMF54A-HE3_A08 part is unused and in its original packaging.
Return procedure for SMF54A-HE3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF54A-HE3_A08 Tags
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