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Vishay General Semiconductor - Diodes Division SMF54A-E3-08
- Part No.:
- SMF54A-E3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF54A-E3-08.pdf
- Description:
- TVS DIODE 54VWM 88VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:74,542
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Product details
Overview
SMF54A-E3-08 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 54 V stand-off voltage (VRWM), 60–66 V reverse 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.
For engineers reviewing the SMF54A-E3-08 datasheet, SMF54A-E3-08 pinout, SMF54A-E3-08 application, or SMF54A-E3-08 equivalent, key selection criteria include clamping performance under 10/1000 µs surge, low capacitance for signal integrity in USB 2.0 or HDMI interfaces, AEC-Q101 qualification status, and SOD-123W-compatible footprint compatibility.
Technical Context
This device operates as a single-channel unidirectional TVS diode, leveraging silicon avalanche junction technology to clamp transients above its breakdown threshold while maintaining low leakage (<0.1 µA at VRWM). Its low incremental surge resistance ensures rapid voltage limiting during ESD events.
The SMF54A-E3-08 is optimized for board-level protection of DC power rails and medium-speed signal lines where capacitance must remain below 150 pF to avoid signal distortion-confirmed by its 148 pF typical value at 0 V bias and 1 MHz frequency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 54 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe operating margin for 48 V nominal systems. |
| Breakdown Voltage (VBR) | 60–66 V at 1 mA - Confirmed avalanche conduction onset range; ensures reliable triggering above system overvoltage thresholds. |
| Clamping Voltage (VC) | 88 V at IPPM = 2.25 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; critical for IC input stage survivability. |
| Capacitance (CD) | 148 pF at VR = 0 V, f = 1 MHz - Low enough for USB 2.0 (480 Mbps) and RS-485 interfaces without signal degradation. |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - Meets highest industrial and automotive ESD immunity requirements. |
| Package | DO-219AB (SOD-123W compatible) - 3.9 × 1.9 × 1.08 mm low-profile outline enabling dense PCB layouts and automated assembly. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per AEC-Q101 Rev D. |
Pinout & Package
SMF54A-E3-08 uses the DO-219AB (SOD-123W-compatible) surface-mount package with cathode-bar marking. The device has two terminals: anode and cathode. Cathode is marked by a bar on the top surface; orientation follows standard tape-and-reel unrolling direction per Vishay specification S8-V-3717.02-003.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point during positive surges | Connected to protected line; conducts surge current toward ground when cathode is held at reference potential. |
| Cathode | Reference terminal (marked with bar) | Typically tied to system ground or low-impedance return path; defines polarity and clamping direction for unidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 µs) | Sustains short-duration surges common in industrial I/O and automotive sensor lines without thermal runaway. |
| Low noise fast response | Sub-nanosecond turn-on enables clamping before sensitive IC inputs are overstressed by ESD transients. |
| Wave and reflow solderable | Compatible with standard Pb-free reflow profiles up to 260 °C peak, supporting high-yield automated manufacturing. |
| MSL Level 1 rating | Unlimited floor life before reflow; eliminates baking requirements and simplifies inventory handling. |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation meets flammability safety standards for enclosed electronics enclosures. |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting analog voltage outputs (e.g., 0–10 V pressure sensors) connected to PLC analog input cards exposed to field wiring transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between signal line and chassis ground to shunt induced surges before reaching ADC front-end. Use Value: 88 V clamping ensures downstream op-amps and SAR ADCs remain within absolute maximum ratings during 1 kV/500 A surge events. | Use Scenario: Shielding LIN bus transceiver pins in door module ECUs from ESD events during assembly and service. IC Role / Device Role / Timing Role: Board-level ESD suppressor on LIN data line (pin 6/7), positioned adjacent to connector to intercept discharge before transceiver input. Use Value: ±30 kV contact discharge rating exceeds ISO 10605 requirement (±25 kV), and 148 pF avoids LIN timing skew at 19.2 kbps. |
| USB 2.0 Data Line Protection | 48 V DC Power Rail Clamp |
Use Scenario: Safeguarding D+ and D− lines of embedded USB host ports in medical devices against user-hand ESD. IC Role / Device Role / Timing Role: Dual discrete unidirectional TVS (one per line) referenced to ground, placed immediately after USB connector. Use Value: 148 pF capacitance preserves signal edge integrity at 480 Mbps; clamping occurs within 1 ns to prevent PHY latch-up. | Use Scenario: Transient suppression on 48 V supply rail feeding motor drivers in warehouse automation AGVs. IC Role / Device Role / Timing Role: Primary clamping device across rail-to-ground, sized to absorb load dump energy per ISO 7637-2 Pulse 5a. Use Value: 200 W peak pulse power handles 10/1000 µs surges up to 2.25 A; 54 V VRWM provides 12.5 % margin above nominal 48 V system. |
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 at 2.1 A), larger SMA package (4.5 × 2.7 × 2.2 mm), same VRWM and VBR range. | Less suitable for space-constrained USB or LIN layouts due to 2.5× larger footprint and higher inductance. | Choose when higher surge current rating (2.1 A vs. 2.25 A) and legacy SMA board compatibility outweigh size penalties. |
| TPSMD54A | Same DO-219AB package, but 85 V clamping at 2.3 A; slightly lower capacitance (135 pF); not AEC-Q101 qualified. | Acceptable for industrial non-automotive use; lacks automotive qualification documentation and long-term reliability validation. | Prefer for cost-sensitive non-automotive designs where AEC-Q101 is not mandated and 3 V lower clamping is acceptable. |
Compared with SMAJ54A-E3/57T and TPSMD54A, the SMF54A-E3-08 delivers optimal balance of compact DO-219AB packaging, automotive-grade AEC-Q101 qualification, and tight 88 V clamping-making it preferred for next-generation space-limited, safety-critical, and high-reliability applications.
Availability
SMF54A-E3-08 is available at Aetrix Electronics and suitable for industrial sensor interface, automotive body control module, and USB 2.0 data line protection requiring stable component supply across multi-year production cycles.
Supply support for SMF54A-E3-08 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 Intertechnology is a global manufacturer of discrete semiconductors and passive components, headquartered in Malvern, PA, with design and manufacturing facilities worldwide.
The SMF series belongs to Vishay's eSMP® family of surface-mount TVS diodes, engineered specifically for robust board-level ESD and surge protection in automotive, industrial, and communications equipment where low capacitance and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the SMF54A-E3-08 at its rated peak pulse current?
The SMF54A-E3-08 has a maximum clamping voltage (VC) of 88 V when subjected to a 10/1000 µs waveform at its rated peak pulse current of 2.25 A. This value is measured per IEC 61000-4-5 test conditions and ensures protected circuits remain within safe voltage limits during surge events. The SMF54A-E3-08 maintains this clamping performance consistently across its specified operating temperature range.
Is the SMF54A-E3-08 qualified to AEC-Q101 for automotive use?
Yes, the SMF54A-E3-08 is explicitly AEC-Q101 qualified per the Vishay datasheet Rev. 2.4 (04-Jul-2023), meeting stress tests including HTGB, HTRB, temperature cycling, and ESD per AEC-Q101 Rev D. This qualification confirms its suitability for automotive applications such as body control modules and LIN bus protection. The SMF54A-E3-08 carries full AEC-Q101 documentation and lot traceability.
What is the capacitance of the SMF54A-E3-08 and how does it affect high-speed signal lines?
The SMF54A-E3-08 exhibits 148 pF typical capacitance at 0 V bias and 1 MHz, verified in the Vishay datasheet electrical characteristics table. This low value minimizes signal attenuation and timing skew on interfaces like USB 2.0 (480 Mbps) and RS-485, preserving eye diagram integrity. The SMF54A-E3-08 achieves this without compromising clamping performance, making it appropriate for medium-speed data line protection.
What package type does the SMF54A-E3-08 use and is it compatible with standard SMT processes?
The SMF54A-E3-08 uses the DO-219AB package (also known as SOD-123W-compatible), measuring 3.9 × 1.9 × 1.08 mm with MSL Level 1 rating and peak reflow temperature tolerance up to 260 °C. It supports both wave and reflow soldering per J-STD-020, and its cathode-bar marking aligns with standard vision-based placement systems. The SMF54A-E3-08 is fully compatible with high-volume automated SMT assembly lines.
How does the SMF54A-E3-08 compare to the SMF58A-E3-08 in terms of voltage ratings and application scope?
The SMF54A-E3-08 has a 54 V stand-off voltage (VRWM) and 60–66 V breakdown range, while the SMF58A-E3-08 specifies 58 V VRWM and 64.4–70.8 V VBR. Both share identical package, capacitance (144 pF), and ESD rating, but the SMF54A-E3-08 targets 48 V systems with tighter margin, whereas SMF58A-E3-08 suits 56 V nominal rails. The SMF54A-E3-08 remains preferred for 48 V industrial and automotive subsystems requiring precise voltage coordination.
SMF54A-E3-08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- 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:
- General Purpose
- Capacitance @ Frequency:
- 148pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF54A-E3-08 FAQ
1.How can I place an order for SMF54A-E3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF54A-E3-08 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 SMF54A-E3-08 reliable?
The price and inventory of SMF54A-E3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF54A-E3-08 is usually 5 days.
3.What payment methods are accepted for SMF54A-E3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF54A-E3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF54A-E3-08?
SMF54A-E3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF54A-E3-08 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 SMF54A-E3-08?
For technical support, including SMF54A-E3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF54A-E3-08 requirements.
6.How does Aetrix verify that SMF54A-E3-08 is sourced from the original manufacturer or authorized distributors?
All SMF54A-E3-08 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 SMF54A-E3-08 meets industry standards.
7.What is the process for return or replacement of SMF54A-E3-08?
All SMF54A-E3-08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF54A-E3-08, 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 SMF54A-E3-08 part is unused and in its original packaging.
Return procedure for SMF54A-E3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF54A-E3-08 Tags
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