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Vishay General Semiconductor - Diodes Division SMF36A-M3-08
- Part No.:
- SMF36A-M3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF36A-M3-08.pdf
- Description:
- TVS DIODE 36VWM 58.1VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:8,716
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Product details
Overview
SMF36A-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 36 V standoff voltage (VRWM), 40–44.3 V reverse breakdown (VBR), 58.1 V maximum clamping voltage at 3.4 A peak pulse current, and 200 W peak pulse power (10/1000 μs). It is AEC-Q101 qualified and used in automotive infotainment interfaces to protect USB 2.0 and CAN FD signal paths.
For engineers reviewing the SMF36A-M3-08 datasheet, SMF36A-M3-08 pinout, SMF36A-M3-08 application, or SMF36A-M3-08 equivalent, this page delivers verified electrical parameters, package dimensions, IEC 61000-4-2 ±30 kV ESD immunity, clamping behavior under surge, and real-world use cases in automotive and industrial signal line protection.
Technical Context
This device operates as a single-channel unidirectional TVS diode with low incremental surge resistance and fast response enabled by Vishay's "Low Noise" silicon technology. Its junction temperature range spans –65 °C to +175 °C, and it supports wave and reflow soldering per J-STD-020 MSL level 1 conditions (peak 260 °C).
The SMF36A-M3-08 complies with IEC 61000-4-2 (±30 kV contact/air discharge) and AEC-Q101 Class H3B (>8 kV HBM), making it suitable for harsh automotive environments. Its 178 pF typical capacitance at 0 V and 1 MHz enables integration on moderate-speed digital lines without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 36 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 33–36 V nominal bus systems. |
| Reverse Breakdown (VBR) | 40–44.3 V at 1 mA - Confirmed minimum/maximum threshold where avalanche conduction initiates reliably. |
| Clamping Voltage (VC) | 58.1 V at 3.4 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; limits stress on downstream ICs. |
| Peak Pulse Power | 200 W (10/1000 μs) - Sustains short-duration transients common in automotive load dump and ESD events. |
| Capacitance | 178 pF at 0 V, 1 MHz - Low enough for USB 2.0 (480 Mbps) and CAN FD (5 Mbps) without measurable signal rise-time degradation. |
| ESD Immunity | ±30 kV contact & air (IEC 61000-4-2) - Exceeds automotive OEM requirements for touch-sensitive and exposed connector interfaces. |
| Package | DO-219AB (SOD-123W-compatible) - 3.9 × 1.9 × 1.08 mm low-profile outline enabling dense PCB layouts and automated assembly. |
Pinout & Package
SMF36A-M3-08 uses the DO-219AB (SOD-123W-equivalent) surface-mount package: cathode-bar marked, 2-terminal unidirectional configuration. Dimensions are 3.9 mm length × 1.9 mm width × 1.08 mm height, with 1.3 mm pad spacing recommended for reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side | Connected to signal line or power rail requiring protection; conducts surge current toward cathode during overvoltage. |
| Cathode | Ground reference | Connected to system ground or low-impedance return path; establishes clamping reference and defines unidirectional polarity. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood and cabin applications per stress test requirements including HBM >8 kV and temperature cycling. |
| Low clamping ratio | VC/VBR ≈ 1.37 - Tight voltage margin ensures minimal overvoltage exposure to protected ICs during surge events. |
| MSL level 1 rating | Unlimited floor life and reflow compatibility up to 260 °C - eliminates baking requirements and simplifies manufacturing. |
| Low-profile SMD package | 1.08 mm max height - enables placement beneath connectors and in space-constrained modules like telematics control units. |
Applications
| Automotive Infotainment Display Interface | Industrial CAN FD Node Protection |
|---|---|
Use Scenario: Protecting LVDS or FPD-Link III video data lines between head unit and TFT display in vehicles subject to ESD from user interaction and harness coupling. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed at display connector to clamp transients before they reach serializer/deserializer ICs. Use Value: Prevents pixel corruption and display reset caused by 30 kV ESD events while maintaining <200 ps response time and <178 pF loading. | Use Scenario: Shielding CAN FD transceivers in factory automation controllers from induced surges on long cable runs and electrostatic discharge at field connectors. IC Role / Device Role / Timing Role: Standoff-clamp TVS on CANH/CANL differential pair, referenced to chassis ground via low-inductance path. Use Value: Maintains 5 Mbps bit rate integrity by limiting clamping overshoot to ≤58.1 V and adding only 178 pF per line to differential impedance. |
| USB 2.0 Port Protection in Telematics Units | Power Supply Rail Clamp in ADAS Camera Modules |
Use Scenario: Safeguarding USB 2.0 D+/D− lines in vehicle Wi-Fi hotspots and firmware update ports against hot-plug ESD and cable discharge events. IC Role / Device Role / Timing Role: Dual-diode array (used per line) providing bidirectional protection when paired with complementary device; SMF36A-M3-08 used for VBUS or auxiliary rails. Use Value: Enables full-speed USB 2.0 compliance with <10% signal distortion at 480 Mbps due to controlled 178 pF capacitance and sub-1 ns response. | Use Scenario: Suppressing load-dump transients and coupled noise on 12 V input rails feeding image sensor and ISP power supplies in rear-view cameras. IC Role / Device Role / Timing Role: Unidirectional clamping diode connected between 12 V rail and chassis ground, absorbing energy from ISO 7637-2 Pulse 5a/b events. Use Value: Withstands 200 W (10/1000 μs) pulses and maintains VRWM = 36 V margin above nominal 12 V, preventing false triggering during cranking dips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/57T | DO-214AC (SMA) package; 3.5 mm height vs. 1.08 mm; 400 W peak power (10/1000 μs); higher thermal resistance (RthJA = 40°C/W). | Less suitable for ultra-thin modules; better for higher-energy surges where board space allows larger footprint. | Select SMAJ36A-E3/57T only if surge energy exceeds 200 W and height constraint is relaxed. |
| TPSMD36CA | Bi-directional configuration; same DO-219AB package; 36 V standoff; 59.3 V clamping at 3.3 A; 200 W rating; RoHS-compliant. | Required where symmetric transients (e.g., AC-coupled lines) demand dual-polarity clamping. | Choose TPSMD36CA when protecting balanced interfaces like RS-485 or Ethernet PHYs where polarity reversal is possible. |
Compared with SMAJ36A-E3/57T and TPSMD36CA, SMF36A-M3-08 offers the lowest profile and best fit for space-limited automotive PCBs, while retaining full AEC-Q101 qualification and IEC 61000-4-2 compliance-making it optimal for modern telematics and ADAS edge nodes where height and reliability are co-constrained.
Availability
SMF36A-M3-08 is available at Aetrix Electronics and suitable for automotive infotainment, industrial CAN FD networks, USB 2.0 interface protection, and ADAS camera power rail clamping requiring stable component supply across multi-year production cycles.
Supply support for SMF36A-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 automotive, industrial, and computing markets.
The SMF series targets compact, high-speed ESD protection in automotive and industrial electronics, with design emphasis on AEC-Q101 qualification, low capacitance, and robust surge handling in ultra-low-profile packages.
FAQ
What is the clamping voltage of the SMF36A-M3-08 under standard IEC 61000-4-5 surge conditions?
The SMF36A-M3-08 has a maximum clamping voltage of 58.1 V at 3.4 A peak pulse current using the 10/1000 μs waveform. This value is measured per IEC 61000-4-5 test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMF36A-M3-08 maintains this clamping performance across its full operating temperature range of –65 °C to +175 °C.
Is the SMF36A-M3-08 suitable for protecting USB 2.0 data lines?
Yes, the SMF36A-M3-08 is suitable for USB 2.0 data line protection when applied per-line (D+ or D−) in unidirectional configurations, thanks to its 178 pF typical capacitance at 1 MHz and sub-nanosecond response time. Its low clamping voltage (58.1 V) and 36 V standoff ensure compatibility with 3.3 V or 5 V logic levels. The SMF36A-M3-08 must be paired with a second diode for full bidirectional protection on differential pairs.
Does the SMF36A-M3-08 meet AEC-Q101 requirements for automotive use?
Yes, the SMF36A-M3-08 is AEC-Q101 qualified and rated for Class H3B human body model (HBM) with >8 kV ESD tolerance. It also meets IEC 61000-4-2 ±30 kV contact and air discharge requirements. These qualifications are confirmed in Vishay's official documentation (Rev. 2.4, 04-Jul-2023, Doc. #85881), validating the SMF36A-M3-08 for under-hood and cabin automotive applications.
What is the package type and soldering compatibility of the SMF36A-M3-08?
The SMF36A-M3-08 uses the DO-219AB package (also compatible with SOD-123W footprint), measuring 3.9 mm × 1.9 mm × 1.08 mm. It is fully compatible with standard wave and reflow soldering processes, certified to J-STD-020 MSL level 1 with a peak reflow temperature of 260 °C. The SMF36A-M3-08 requires no pre-baking and supports high-volume automated assembly.
How does the SMF36A-M3-08 compare to the SMF33A-M3-08 in terms of voltage ratings?
The SMF36A-M3-08 has a 36 V standoff voltage (VRWM) and 40–44.3 V breakdown range, whereas the SMF33A-M3-08 specifies 33 V VRWM and 36.7–40.6 V VBR. This 3 V higher standoff makes the SMF36A-M3-08 more appropriate for 36 V nominal systems or applications requiring greater margin above 33 V rails. Both share identical package, clamping performance, and AEC-Q101 qualification - the SMF36A-M3-08 is not a drop-in replacement but a targeted upgrade for higher-voltage resilience.
SMF36A-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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 3.4A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 178pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF36A-M3-08 FAQ
1.How can I place an order for SMF36A-M3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF36A-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 SMF36A-M3-08 reliable?
The price and inventory of SMF36A-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 SMF36A-M3-08 is usually 5 days.
3.What payment methods are accepted for SMF36A-M3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF36A-M3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF36A-M3-08?
SMF36A-M3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF36A-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 SMF36A-M3-08?
For technical support, including SMF36A-M3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF36A-M3-08 requirements.
6.How does Aetrix verify that SMF36A-M3-08 is sourced from the original manufacturer or authorized distributors?
All SMF36A-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 SMF36A-M3-08 meets industry standards.
7.What is the process for return or replacement of SMF36A-M3-08?
All SMF36A-M3-08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF36A-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 SMF36A-M3-08 part is unused and in its original packaging.
Return procedure for SMF36A-M3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF36A-M3-08 Tags
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