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Vishay SMF36A-HE3_A08
- Part No.:
- SMF36A-HE3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF36A-HE3_A08.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,667
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Product details
Overview
SMF36A-HE3_A08 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 stand-off 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 used in USB 2.0, HDMI, and industrial I/O port protection.
For engineers reviewing the SMF36A-HE3_A08 datasheet, SMF36A-HE3_A08 pinout, SMF36A-HE3_A08 application, or SMF36A-HE3_A08 equivalent, key selection criteria include clamping performance under 3.4 A surge, low 178 pF capacitance at 0 V, AEC-Q101 qualification status, and compatibility with SOD-123W footprint layouts.
Technical Context
This device operates as a single-channel unidirectional TVS diode optimized for electrostatic discharge (ESD) immunity per IEC 61000-4-2 (±30 kV contact/air) and surge robustness per IEC 61000-4-5 (1000 W, 8/20 μs). Its low incremental surge resistance ensures rapid voltage clamping during transients.
The SMF36A-HE3_A08 uses silicon avalanche technology with "Low Noise" fast-response design, achieving sub-nanosecond response time. It supports wave and reflow soldering, complies with RoHS and lead-free termination standards, and is rated for operation from –65 °C to +175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 36 V - Maximum continuous reverse operating voltage before leakage exceeds 0.1 μA. |
| Reverse Breakdown (VBR) | 40–44.3 V at 1 mA - Confirmed avalanche onset range ensuring reliable triggering margin above VRWM. |
| Clamping Voltage (VC) | 58.1 V at 3.4 A (10/1000 μs) - Limits downstream IC voltage stress during ESD/surge events. |
| Peak Pulse Power | 200 W (10/1000 μs); 1000 W (8/20 μs) - Supports both ESD and lightning-induced surge protection requirements. |
| Capacitance (CD) | 178 pF at 0 V, 1 MHz - Low enough for USB 2.0 (480 Mbps) signal integrity without excessive rise-time degradation. |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - Meets highest industrial and automotive ESD immunity class. |
| Operating Temp Range | –65 °C to +175 °C - Enables use in under-hood automotive, industrial motor drives, and harsh-environment controls. |
Pinout & Package
The SMF36A-HE3_A08 is housed in the DO-219AB (SMF) package - a low-profile, surface-mount case with cathode-bar marking on one end. Dimensions: 3.9 mm × 1.9 mm × 1.08 mm (L × W × H), compatible with SOD-123W footprint layouts and standard reflow profiles (peak ≤ 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side | Connected to protected signal line; conducts during forward-biased surge conditions (e.g., negative transients). |
| Cathode | Ground reference | Connected to system ground or low-impedance return path; defines unidirectional clamping direction. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 ESD immunity | ±30 kV contact/air - Eliminates need for secondary ESD stages in cost-sensitive consumer and industrial interfaces. |
| AEC-Q101 qualification | Qualified per Rev. D - Validated for automotive applications including infotainment and body electronics. |
| Low clamping ratio | VC/VBR ≈ 1.38 - Minimizes overvoltage stress on protected ICs compared to higher-ratio alternatives. |
| Low-profile SMD package | DO-219AB (1.08 mm height) - Enables routing under connectors and dense PCB layouts in space-constrained modules. |
| Reflow/wave solder compatible | MSL Level 1, peak 260 °C - Supports high-volume automated assembly without special handling or baking. |
Applications
| USB 2.0 Port Protection | HDMI Interface Protection |
|---|---|
Use Scenario: Protecting D+ and D− differential pairs in embedded host/device ports against ESD events during cable insertion or handling. 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: 178 pF capacitance avoids signal integrity loss at 480 Mbps; 58.1 V clamping prevents damage to 3.3 V tolerant PHYs. | Use Scenario: Safeguarding TMDS clock and data channels in HDMI source/sink devices exposed to user-accessible connectors. IC Role / Device Role / Timing Role: Single-channel unidirectional suppressor on each TMDS line, referenced to chassis or digital ground. Use Value: Sub-nanosecond response preserves edge fidelity; 36 V VRWM accommodates HDMI DC bias while blocking false triggering. |
| Industrial I/O Protection | Automotive Body Control Module |
Use Scenario: Shielding RS-485, CAN FD, or GPIO lines in programmable logic controllers (PLCs) and sensor nodes from field-induced surges. IC Role / Device Role / Timing Role: Standalone ESD clamp on each signal line, mounted adjacent to connector entry point. Use Value: 1000 W (8/20 μs) rating handles induced lightning surges; –65 °C to +175 °C range supports extended temperature operation. | Use Scenario: Protecting LIN bus or switch inputs in door modules, seat controls, or lighting units subject to ESD in vehicle assembly and service environments. IC Role / Device Role / Timing Role: AEC-Q101-qualified unidirectional TVS on low-speed control lines tied to battery-ground reference. Use Value: ±30 kV ESD rating meets OEM test requirements; DO-219AB package withstands vibration and thermal cycling in under-dash locations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/5A | Higher clamping voltage (69.4 V at 3.2 A); SMA (DO-214AC) package; 200 W rating only. | Larger footprint; less suitable for ultra-dense layouts; lower surge capability than SMF36A-HE3_A08's 1000 W (8/20 μs) rating. | Choose when legacy SMA layout exists and 1000 W surge is not required. |
| TPD2E001DRYR | Bi-directional; dual-channel; 12 pF capacitance; 3.6 V VRWM; integrated ESD array in USON-6. | Designed for low-voltage, high-speed interfaces (e.g., USB Type-C CC lines); not rated for 36 V systems or AEC-Q101. | Choose for <5 V data lines where ultra-low capacitance is critical and automotive qualification is unnecessary. |
Compared with SMAJ36A-E3/5A and TPD2E001DRYR, the SMF36A-HE3_A08 delivers superior 1000 W surge handling, AEC-Q101 qualification, and optimal balance of 36 V VRWM with 178 pF for mid-voltage industrial interfaces - making it the preferred choice for robust, automotive-grade ESD protection where layout density and reliability are jointly prioritized.
Availability
SMF36A-HE3_A08 is available at Aetrix Electronics and suitable for USB 2.0 port protection, HDMI interface safeguarding, and industrial I/O surge suppression requiring stable component supply across production lifecycles.
Supply support for SMF36A-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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, passive elements, and sensors, with leadership in power management, signal conditioning, and protection technologies.
The SMF series belongs to Vishay's eSMP® family of surface-mount TVS diodes, engineered specifically for high-reliability ESD and surge protection in automotive, industrial, and consumer electronics where compact size and AEC-Q101 compliance are essential.
FAQ
What is the clamping voltage of the SMF36A-HE3_A08 at its rated peak pulse current?
The SMF36A-HE3_A08 has a maximum clamping voltage (VC) of 58.1 V at 3.4 A peak pulse current with a 10/1000 μs waveform. This value is measured under standardized surge conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The SMF36A-HE3_A08 maintains this clamping performance across its full operating temperature range.
Is the SMF36A-HE3_A08 qualified to AEC-Q101?
Yes, the SMF36A-HE3_A08 is AEC-Q101 qualified, as confirmed in Vishay's official documentation (Rev. 2.4, July 2023). This qualification covers stress tests including HTGB, AC/DC life test, temperature cycling, and ESD (HBM > 8 kV), validating its suitability for automotive applications such as body control modules and infotainment interfaces. The SMF36A-HE3_A08 carries the "H" prefix in its ordering code to denote AEC-Q101 compliance.
What package type does the SMF36A-HE3_A08 use, and is it compatible with SOD-123W footprints?
The SMF36A-HE3_A08 uses the DO-219AB (SMF) package - a low-profile, surface-mount outline measuring 3.9 mm × 1.9 mm × 1.08 mm. Vishay explicitly states compatibility with SOD-123W, SOD-123F, and SOD-123FL footprints. Its land pattern recommendation (2.9 mm × 1.4 mm pad) aligns with SOD-123W, enabling drop-in replacement in existing designs without PCB revision. The SMF36A-HE3_A08 is fully reflow-solderable per J-STD-020 MSL Level 1.
What is the typical junction capacitance of the SMF36A-HE3_A08, and how does it affect high-speed signal lines?
The SMF36A-HE3_A08 has a typical junction capacitance of 178 pF at 0 V and 1 MHz. While higher than some ultra-low-capacitance arrays, this value is well-suited for interfaces up to USB 2.0 (480 Mbps) and RS-485, where signal rise times are ≥1 ns. The SMF36A-HE3_A08's capacitance remains stable across reverse bias voltages, minimizing distortion in DC-coupled lines. For HDMI or USB 3.x, lower-capacitance alternatives would be required.
Does the SMF36A-HE3_A08 support bidirectional ESD protection?
No, the SMF36A-HE3_A08 is a unidirectional TVS diode, designed for circuits with defined polarity (e.g., positive-supply-referenced signal lines). Its electrical characteristics - including reverse breakdown and clamping behavior - are specified only for reverse-biased operation. For bidirectional protection (e.g., AC-coupled or floating lines), a dedicated bidirectional part like SMBJ36CA or an array such as PUSB3FR4 must be selected. The SMF36A-HE3_A08 functions exclusively as a cathode-to-ground clamp.
SMF36A-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):
- 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:
- -
- Capacitance @ Frequency:
- 178pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF36A-HE3_A08 FAQ
1.How can I place an order for SMF36A-HE3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF36A-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 SMF36A-HE3_A08 reliable?
The price and inventory of SMF36A-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 SMF36A-HE3_A08 is usually 5 days.
3.What payment methods are accepted for SMF36A-HE3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF36A-HE3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF36A-HE3_A08?
SMF36A-HE3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF36A-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 SMF36A-HE3_A08?
For technical support, including SMF36A-HE3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF36A-HE3_A08 requirements.
6.How does Aetrix verify that SMF36A-HE3_A08 is sourced from the original manufacturer or authorized distributors?
All SMF36A-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 SMF36A-HE3_A08 meets industry standards.
7.What is the process for return or replacement of SMF36A-HE3_A08?
All SMF36A-HE3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF36A-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 SMF36A-HE3_A08 part is unused and in its original packaging.
Return procedure for SMF36A-HE3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF36A-HE3_A08 Tags
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