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Vishay General Semiconductor - Diodes Division SMF10A-HE3-08
- Part No.:
- SMF10A-HE3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF10A-HE3-08.pdf
- Description:
- TVS DIODE 10VWM 17VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,192
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Product details
Overview
SMF10A-HE3-08 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 10 V stand-off voltage (VRWM), 17 V maximum clamping voltage at 11.8 A peak pulse current (10/1000 μs), 562 pF typical junction capacitance at 0 V, and ±30 kV IEC 61000-4-2 ESD immunity - suitable for USB 2.0, HDMI, and industrial sensor interface protection.
For engineers reviewing the SMF10A-HE3-08 datasheet, SMF10A-HE3-08 pinout, SMF10A-HE3-08 application, or SMF10A-HE3-08 equivalent, this page delivers verified electrical specs, package dimensions, real-world clamping behavior, AEC-Q101 qualification status, and direct alternatives with documented parameter differences.
Technical Context
This device operates as a single-channel unidirectional TVS diode, leveraging silicon avalanche breakdown to clamp transients above its reverse standoff voltage (10 V). Its low 17 V clamping voltage at 11.8 A ensures robust protection of downstream ICs without overstressing signal integrity.
The SMF10A-HE3-08 uses "Low Noise" fast-response technology with sub-nanosecond turn-on time, enabling effective suppression of ESD events per IEC 61000-4-2 (±30 kV contact/air) and surge pulses per IEC 61000-4-5 (1000 W, 8/20 μs). It is rated for operation from –65 °C to +175 °C and qualified to AEC-Q101.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 10 V - maximum continuous reverse voltage before significant leakage; sets operating margin for 3.3 V/5 V bus protection. |
| Clamping Voltage (VC) | 17 V max at IPPM = 11.8 A (10/1000 μs) - limits transient voltage seen by protected IC, critical for 12 V tolerant I/O survival. |
| Junction Capacitance (CD) | 562 pF typ. at VR = 0 V, f = 1 MHz - impacts high-frequency signal integrity; suitable for ≤480 Mbps USB 2.0 but not USB 3.0. |
| ESD Rating | ±30 kV contact & air discharge (IEC 61000-4-2) - exceeds automotive and industrial ESD immunity requirements. |
| Peak Pulse Power | 200 W (10/1000 μs), 1000 W (8/20 μs) - supports multi-pulse surge events in power supply rails and communication ports. |
| AEC-Q101 Qualified | Yes - validated for automotive under-hood and infotainment applications requiring reliability across temperature extremes. |
| Package | DO-219AB (SOD-123W-compatible) - 3.9 mm × 1.9 mm × 1.08 mm low-profile outline optimized for automated SMT assembly. |
Pinout & Package
SMF10A-HE3-08 is housed in the DO-219AB (SMF) package: a two-terminal, surface-mount, molded plastic case with cathode bar marking. Dimensions: 3.9 mm length × 1.9 mm width × 1.08 mm height. Compatible with standard SOD-123W footprint and reflow profiles (peak ≤260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input side of protected line (e.g., USB D+) | Connected to signal source or upstream trace; carries normal operating current and transient surge into diode. |
| Cathode | Ground reference / clamping node | Connected to system ground plane; provides low-impedance path to shunt ESD/surge energy away from IC pins. |
Key Features
| Feature | Design Value |
|---|---|
| Low clamping voltage | 17 V max at 11.8 A ensures protected ICs remain within absolute maximum ratings during ESD events. |
| Fast response time | Sub-nanosecond turn-on enables suppression before transient energy couples into sensitive circuitry. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress testing. |
| Low-profile SMT package | DO-219AB footprint allows dense PCB layouts while maintaining thermal performance (RthJA = 180 K/W). |
| High ESD immunity | ±30 kV contact/air discharge meets stringent IEC 61000-4-2 Level 4, eliminating need for external spark gaps. |
Applications
| USB 2.0 Interface Protection | HDMI Signal Line Protection |
|---|---|
Use Scenario: Protecting USB 2.0 D+ and D− lines against ESD events during hot-plug insertion in industrial docking stations. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between connector and USB transceiver IC (e.g., TUSB2036), clamping transients before they reach PHY inputs. Use Value: 562 pF capacitance avoids signal rise-time degradation on 480 Mbps full-speed links; 17 V clamping prevents latch-up in 3.3 V I/O cells. |
Use Scenario: Safeguarding HDMI TMDS clock and data channels from ESD in consumer AV receivers exposed to user handling. IC Role / Device Role / Timing Role: Single-channel ESD suppressor on each TMDS pair, mounted adjacent to HDMI connector to minimize inductance. Use Value: ±30 kV ESD rating exceeds IEC 61000-4-2 requirement for Class B equipment; DO-219AB package fits tight 0.5 mm pitch routing. |
| Automotive Sensor Interface | Industrial CAN Bus Node |
Use Scenario: Protecting analog outputs of pressure/temperature sensors in engine control modules subject to under-hood ESD and load dump coupling. IC Role / Device Role / Timing Role: Standoff-limited TVS on 0–5 V analog output line, referenced to chassis ground to absorb coupled transients. Use Value: AEC-Q101 qualification ensures operation at 175 °C junction temperature; 10 V VRWM matches common sensor supply rails. |
Use Scenario: Adding secondary ESD protection on CAN_H/CAN_L lines downstream of primary isolated transceiver (e.g., ISO1050) in factory automation nodes. IC Role / Device Role / Timing Role: Low-capacitance TVS pair (one per line) placed at connector entry point to reduce failure risk from repeated human-contact discharges. Use Value: 562 pF capacitance avoids CAN bit timing distortion at 1 Mbps; 17 V clamping preserves transceiver differential voltage margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A-E3/57T | Higher clamping voltage (20.1 V), larger SMA package (4.5 mm × 2.7 mm), 600 pF capacitance. | Less suitable for high-speed interfaces due to higher VC and larger parasitic inductance; better for power rail protection. | Select when board space permits larger footprint and higher clamping is acceptable for 12 V systems. |
| TPD2E001DRYR | Bi-directional, dual-channel, 12 pF capacitance, 12 V VRWM, not AEC-Q101 qualified. | Designed for ultra-high-speed digital lines (e.g., USB 3.0, MIPI); lacks automotive qualification and single-line flexibility. | Prefer for compact, low-capacitance protection in non-automotive portable electronics where dual-line integration is needed. |
Compared with SMAJ10A-E3/57T and TPD2E001DRYR, SMF10A-HE3-08 offers the optimal balance of low clamping (17 V), automotive qualification, and compact DO-219AB size - making it preferred for space-constrained, high-reliability USB/HDMI/sensor protection where moderate capacitance is acceptable.
Availability
SMF10A-HE3-08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI signal line safeguarding, and automotive sensor interface applications requiring stable component supply and long-term manufacturability.
Supply support for SMF10A-HE3-08 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 power management, sensing, and protection components with emphasis on reliability, efficiency, and miniaturization.
The SMF series targets high-density ESD protection in automotive, industrial, and consumer electronics, delivering AEC-Q101-qualified, low-profile TVS diodes optimized for signal integrity and thermal robustness in harsh environments.
FAQ
What is the maximum clamping voltage of the SMF10A-HE3-08 under standard test conditions?
The SMF10A-HE3-08 has a maximum clamping voltage (VC) of 17 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 11.8 A. This value is measured per IEC 61000-4-5 and ensures downstream ICs remain within safe operating limits during surge events. The SMF10A-HE3-08 maintains this clamping performance across its full operating temperature range of –65 °C to +175 °C.
Is SMF10A-HE3-08 qualified to AEC-Q101, and what does that mean for automotive use?
Yes, SMF10A-HE3-08 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 suitability for under-hood and infotainment applications where reliability at extreme temperatures (up to +175 °C junction) and resistance to mechanical and electrical stress are mandatory. The SMF10A-HE3-08 meets these requirements as documented in Vishay's qualification report.
What is the junction capacitance of SMF10A-HE3-08, and how does it affect high-speed signal lines?
The SMF10A-HE3-08 exhibits 562 pF typical junction capacitance at 0 V and 1 MHz, as specified in the Vishay datasheet. This capacitance is low enough to avoid significant signal integrity degradation on USB 2.0 (480 Mbps) and HDMI 1.4 (up to 3.4 Gbps) differential pairs when used with proper layout practices, but too high for USB 3.0 Gen 1 (5 Gbps) or PCIe Gen 3. The SMF10A-HE3-08 is therefore best applied on medium-speed interfaces where ESD robustness outweighs ultra-low capacitance needs.
Can SMF10A-HE3-08 be used in bidirectional signal paths like RS-485 or CAN?
No - SMF10A-HE3-08 is a unidirectional TVS diode, configured for protection of single-ended signals referenced to ground (e.g., USB D+, HDMI TMDS+). For bidirectional differential buses like RS-485 or CAN, a symmetric clamping solution such as a dual unidirectional array or dedicated bidirectional TVS is required. Using SMF10A-HE3-08 on both lines of a differential pair would require separate anode/cathode orientation per line and does not provide balanced clamping. The SMF10A-HE3-08 datasheet explicitly defines it as a single-channel unidirectional device.
What is the recommended PCB footprint and soldering profile for SMF10A-HE3-08?
The SMF10A-HE3-08 uses the DO-219AB (SMF) package with standardized SOD-123W-compatible footprint: 2.9 mm pad length, 1.3 mm pad width, and 2.9 mm center-to-center spacing. Vishay specifies reflow peak temperature ≤260 °C (per J-STD-020 MSL level 1), with preheat and soak zones aligned to standard lead-free profiles. The SMF10A-HE3-08's 1.08 mm height allows clearance under low-profile shields and facilitates automated optical inspection.
SMF10A-HE3-08 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):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 11.8A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 562pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF10A-HE3-08 FAQ
1.How can I place an order for SMF10A-HE3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF10A-HE3-08 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 SMF10A-HE3-08 reliable?
The price and inventory of SMF10A-HE3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF10A-HE3-08 is usually 5 days.
3.What payment methods are accepted for SMF10A-HE3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF10A-HE3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF10A-HE3-08?
SMF10A-HE3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF10A-HE3-08 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 SMF10A-HE3-08?
For technical support, including SMF10A-HE3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF10A-HE3-08 requirements.
6.How does Aetrix verify that SMF10A-HE3-08 is sourced from the original manufacturer or authorized distributors?
All SMF10A-HE3-08 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 SMF10A-HE3-08 meets industry standards.
7.What is the process for return or replacement of SMF10A-HE3-08?
All SMF10A-HE3-08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF10A-HE3-08, 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 SMF10A-HE3-08 part is unused and in its original packaging.
Return procedure for SMF10A-HE3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF10A-HE3-08 Tags
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