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Vishay General Semiconductor - Diodes Division SMF26A-M3-08
- Part No.:
- SMF26A-M3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF26A-M3-08.pdf
- Description:
- TVS DIODE 26VWM 42.1VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:5,750
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Product details
Overview
SMF26A-M3-08 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 26 V stand-off voltage (VRWM), 42.1 V maximum clamping voltage at 4.8 A peak pulse current (10/1000 μs), and ±30 kV IEC 61000-4-2 ESD immunity - deployed in USB 2.0 interfaces, HDMI signal paths, and automotive infotainment I/O protection.
For engineers reviewing the SMF26A-M3-08 datasheet, SMF26A-M3-08 pinout, SMF26A-M3-08 application, or SMF26A-M3-08 equivalent, key selection criteria include clamping performance under 5 A surge, low 230 pF capacitance at 0 V, AEC-Q101 qualification status, and compatibility with SOD-123W footprint constraints in space-constrained PCB layouts.
Technical Context
The SMF26A-M3-08 operates as a single-channel unidirectional TVS diode, leveraging silicon avalanche breakdown to clamp transients above its 28.9–32.0 V reverse breakdown range (VBR). Its low incremental surge resistance enables fast response (<1 ns) and tight clamping during ESD events, critical for protecting 3.3 V and 5 V logic interfaces without signal distortion.
Designed for mounting on epoxy-glass PCBs with 3 mm × 3 mm Cu pads, it delivers 180 K/W junction-to-ambient thermal resistance and supports peak pulse power of 200 W (10/1000 μs) and 1000 W (8/20 μs per IEC 61000-4-5), while maintaining operation across -65 °C to +175 °C ambient temperatures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 26 V - ensures no conduction during normal 24–28 V system operation, preserving signal integrity on industrial control buses. |
| Clamping Voltage (VC) | 42.1 V max at IPPM = 4.8 A (10/1000 μs) - limits downstream IC stress to safe levels during surge events. |
| Capacitance (CD) | 230 pF at VR = 0 V, f = 1 MHz - compatible with USB 2.0 (480 Mbps) and CAN FD signal lines without excessive rise-time degradation. |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - exceeds Level 4 immunity requirements for consumer and automotive electronics. |
| Package | DO-219AB (SOD-123W-compatible) - 3.9 mm × 1.9 mm × 1.08 mm low-profile outline enabling dense routing in portable and ADAS modules. |
| AEC-Q101 Qualified | Yes - validated for automotive applications including body electronics, infotainment, and sensor interfaces per stress test requirements. |
| Peak Pulse Power | 200 W (10/1000 μs), 1000 W (8/20 μs) - handles lightning-induced surges in industrial Ethernet and PoE-powered devices. |
Pinout & Package
SMF26A-M3-08 uses the DO-219AB (SOD-123W-equivalent) surface-mount package: cathode-bar marked, single-diode configuration with two terminals. The package measures 3.9 mm length × 1.9 mm width × 1.08 mm height, optimized for wave and reflow soldering per J-STD-020 MSL level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input side of protected line | Connected to signal trace requiring ESD protection; referenced to system ground via cathode path during clamping. |
| Cathode | Ground reference terminal | Must be routed to low-impedance chassis or digital ground plane to ensure effective transient shunting and minimal ground bounce. |
Key Features
| Feature | Design Value |
|---|---|
| Low-clamp architecture | 42.1 V VC at 4.8 A enables robust protection of 24 V industrial I/O without overvoltage damage to downstream ASICs. |
| "Low Noise" fast-response technology | <1 ns response time minimizes jitter and bit errors in high-speed serial links such as RS-485 and CAN. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress - suitable for under-hood ECUs. |
| SOD-123W footprint compatibility | Enables drop-in replacement in existing designs using standard SOD-123W land patterns, reducing layout redesign effort. |
| Reflow/wave solderable | Rated for peak reflow temperatures up to 260 °C - compatible with lead-free assembly processes used in medical and telecom equipment. |
Applications
| Industrial Fieldbus Protection | Automotive Infotainment I/O |
|---|---|
Use Scenario: RS-485 transceivers in PLC backplanes exposed to cable discharge events and induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between differential pair and transceiver input pins. Use Value: Clamps transients to ≤42.1 V while adding only 230 pF loading - preserves signal edge rate and common-mode noise rejection. |
Use Scenario: HDMI and USB 2.0 ports in head units subjected to ESD during user insertion of cables and accessories. IC Role / Device Role / Timing Role: Point-of-entry ESD suppressor on each signal line before connector and PHY IC. Use Value: ±30 kV contact discharge rating prevents latch-up or gate oxide damage in high-density multimedia SoCs. |
| Automotive Body Control Module | Medical Sensor Interface |
Use Scenario: LIN bus and switch inputs in door module ECUs operating in harsh vehicle environments. IC Role / Device Role / Timing Role: Single-line transient suppressor on each LIN signal and wake-up line. Use Value: AEC-Q101 qualification ensures long-term reliability under thermal cycling (-40 °C to +125 °C) and vibration stress. |
Use Scenario: Analog front-end inputs of patient monitoring devices connected to external sensors via shielded cables. IC Role / Device Role / Timing Role: Low-capacitance ESD clamp on biopotential amplifier inputs (ECG, EEG). Use Value: 230 pF capacitance avoids filtering critical low-frequency bio-signals below 1 kHz while suppressing ESD pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26A-E3/57T | DO-214AC (SMA) package; larger 4.5 mm × 2.7 mm footprint; 43.5 V VC at 4.7 A; 250 pF capacitance. | Higher board area requirement; less suitable for ultra-dense layouts like mobile medical wearables. | Select SMAJ26A-E3/57T when legacy SMA footprints exist or higher surge margin (1500 W 8/20 μs) is prioritized over size. |
| TPD2E007DRYR | Quad-channel, 0.65 mm × 0.65 mm DSBGA; 25 V VRWM; 12 V VC at 1 A; 3.5 pF per channel. | Optimized for high-speed digital interfaces (USB 3.0, MIPI); not rated for 200 W pulse power or AEC-Q101. | Choose TPD2E007DRYR for multi-line, ultra-low-capacitance protection in portable electronics where surge energy is lower. |
Compared with SMAJ26A-E3/57T and TPD2E007DRYR, SMF26A-M3-08 uniquely balances automotive-grade reliability (AEC-Q101), compact DO-219AB size, and 200 W surge capability - making it optimal for space-constrained, high-reliability industrial and automotive signal lines where both ESD and surge must be addressed with one device.
Availability
SMF26A-M3-08 is available at Aetrix Electronics and suitable for industrial fieldbus protection, automotive infotainment I/O, and medical sensor interface applications requiring stable component supply and full traceability through production ramps.
Supply support for SMF26A-M3-08 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, optoelectronics, and passive components for demanding industrial, automotive, and computing applications.
The SMF series targets high-speed data line protection with AEC-Q101 qualification, low capacitance, and precise clamping - engineered specifically for automotive infotainment, industrial communication, and medical instrumentation signal integrity.
FAQ
What is the reverse stand-off voltage of SMF26A-M3-08?
The reverse stand-off voltage (VRWM) of SMF26A-M3-08 is 26 V. This value defines the maximum continuous working voltage the device can withstand without entering breakdown, ensuring reliable operation on 24 V industrial control lines and automotive LIN buses. It is measured at 25 °C with ≤0.1 μA leakage current, per Vishay's SMF5V0A–SMF58A specification sheet Rev. 2.4.
Is SMF26A-M3-08 qualified to AEC-Q101?
Yes, SMF26A-M3-08 is AEC-Q101 qualified. The datasheet explicitly states "AEC-Q101 qualified available" for the SMF family, and the part number suffix "-M3-08" corresponds to Vishay's AEC-Q101-compliant production grade per ordering code conventions in Document 85881. This qualification covers temperature cycling, HTRB, and ESD stress testing required for automotive under-hood and cabin applications.
What is the clamping voltage of SMF26A-M3-08 at 4.8 A?
The maximum clamping voltage (VC) of SMF26A-M3-08 is 42.1 V at a peak pulse current (IPPM) of 4.8 A with a 10/1000 μs waveform. This parameter is specified in the Electrical Characteristics table of the Vishay SMF5V0A–SMF58A datasheet and reflects the voltage seen by protected circuitry during standardized surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Does SMF26A-M3-08 have a unidirectional or bidirectional configuration?
SMF26A-M3-08 is a unidirectional ESD protection diode. Its marking code "CE" and placement in the "Nchannel" column of the Electrical Characteristics table confirm single-polarity operation - anode-to-cathode conduction only. This configuration is intended for DC-biased signal lines like RS-485, LIN, and 24 V sensor outputs where polarity is fixed and ground-referenced clamping is required.
What package type does SMF26A-M3-08 use?
SMF26A-M3-08 uses the DO-219AB package, also referenced as SOD-123W-compatible in Vishay documentation. Its dimensions are 3.9 mm × 1.9 mm × 1.08 mm, with cathode bar marking and MSL level 1 moisture sensitivity. The package supports both wave and reflow soldering, with peak temperature tolerance up to 260 °C, making it suitable for high-volume lead-free manufacturing.
SMF26A-M3-08 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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 4.8A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 230pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF26A-M3-08 FAQ
1.How can I place an order for SMF26A-M3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF26A-M3-08 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 SMF26A-M3-08 reliable?
The price and inventory of SMF26A-M3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF26A-M3-08 is usually 5 days.
3.What payment methods are accepted for SMF26A-M3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF26A-M3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF26A-M3-08?
SMF26A-M3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF26A-M3-08 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 SMF26A-M3-08?
For technical support, including SMF26A-M3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF26A-M3-08 requirements.
6.How does Aetrix verify that SMF26A-M3-08 is sourced from the original manufacturer or authorized distributors?
All SMF26A-M3-08 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 SMF26A-M3-08 meets industry standards.
7.What is the process for return or replacement of SMF26A-M3-08?
All SMF26A-M3-08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF26A-M3-08, 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 SMF26A-M3-08 part is unused and in its original packaging.
Return procedure for SMF26A-M3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF26A-M3-08 Tags
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