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Vishay General Semiconductor - Diodes Division SMF13A-HM3-08
- Part No.:
- SMF13A-HM3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF13A-HM3-08.pdf
- Description:
- TVS DIODE 13VWM 21.5VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:3,909
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Product details
Overview
SMF13A-HM3-08 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 13 V stand-off voltage (VRWM), 21.5 V maximum clamping voltage at 9.3 A peak pulse current, 423 pF typical junction capacitance at 0 V, ±30 kV IEC 61000-4-2 ESD immunity, and 200 W peak pulse power (10/1000 μs).
For engineers reviewing the SMF13A-HM3-08 datasheet, SMF13A-HM3-08 pinout, SMF13A-HM3-08 application, or SMF13A-HM3-08 equivalent, this device is selected for robust electrostatic discharge protection in automotive infotainment interfaces, USB 2.0 signal lines, and industrial sensor I/O where low clamping voltage and sub-1 ns response time are critical.
Technical Context
The SMF13A-HM3-08 operates as a unidirectional avalanche diode with a reverse breakdown voltage range of 14.4 V to 16.0 V at 1 mA test current. Its low incremental surge resistance enables tight clamping performance under fast transients, while its "Low Noise" technology ensures sub-nanosecond response to ESD events per IEC 61000-4-2.
Qualified to AEC-Q101, it supports operation from −65 °C to +175 °C and is rated for 1000 W peak pulse power under IEC 61000-4-5 (8/20 μs), with thermal resistance RthJA = 180 K/W on standard epoxy-glass PCB pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 13 V - Maximum continuous reverse voltage before leakage exceeds 0.1 μA; defines operating margin for protected signal lines. |
| Clamping Voltage (VC) | 21.5 V max at IPPM = 9.3 A - Limits transient voltage seen by downstream ICs during 10/1000 μs surges. |
| Junction Capacitance (CD) | 423 pF at VR = 0 V, f = 1 MHz - Impacts signal integrity on high-speed lines; suitable for ≤10 Mbps interfaces. |
| ESD Withstand | ±30 kV contact & air discharge (IEC 61000-4-2) - Meets automotive and industrial ESD immunity requirements without external shielding. |
| Peak Pulse Power | 200 W (10/1000 μs), 1000 W (8/20 μs) - Supports robust surge handling in power rail and data line protection. |
| Operating Temperature | −65 °C to +175 °C - Enables use in under-hood automotive and industrial environments without derating. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including HBM >8 kV and temperature cycling. |
Pinout & Package
SMF13A-HM3-08 uses the DO-219AB (SMF) package: low-profile, surface-mount, cathode-marked single-diode configuration with 1.9 mm width, 3.9 mm length, and 1.08 mm height. Compatible with wave and reflow soldering (peak temp ≤260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/line side terminal | Connected to signal or power line requiring ESD protection; conducts surge current toward ground when clamped. |
| Cathode | Ground reference terminal | Connected to system ground plane; establishes reverse-biased blocking state during normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Enables reliable protection against repetitive EFT bursts in industrial control I/O without thermal runaway. |
| ±30 kV IEC 61000-4-2 ESD immunity | Eliminates need for secondary board-level shielding in consumer and automotive touch interfaces. |
| Low clamping voltage (21.5 V @ 9.3 A) | Protects 12 V-rated interface ICs (e.g., CAN transceivers, LIN drivers) from overvoltage damage during transients. |
| SOD-123W footprint compatibility | Allows drop-in replacement in existing layouts designed for SOD-123W packages without PCB redesign. |
| AEC-Q101 qualification | Validates long-term reliability for automotive applications including infotainment, body electronics, and ADAS sensor interfaces. |
Applications
| Automotive Infotainment Display Interface | Industrial RS-485 Communication Port |
|---|---|
Use Scenario: Protecting LVDS or FPD-Link III video data lines between head unit and display panel in vehicles exposed to ESD during service or user interaction. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed inline with differential signal pairs to clamp ESD-induced common-mode spikes. Use Value: Prevents latch-up or permanent damage to display serializer/deserializer ICs while maintaining <100 ps timing skew due to matched capacitance. |
Use Scenario: Safeguarding RS-485 transceiver I/O pins in factory automation PLCs subjected to cable-discharge events and lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS on A/B bus lines, referenced to local ground, absorbing 8/20 μs surges up to 1000 W. Use Value: Maintains signal integrity over 1200 m cable runs by limiting clamping overshoot to ≤21.5 V, preserving receiver common-mode range. |
| USB 2.0 Host Port Protection | Automotive LIN Bus Node |
Use Scenario: ESD protection for D+ and D− lines on automotive USB host ports used for diagnostics and media transfer. IC Role / Device Role / Timing Role: Dual-channel unidirectional TVS (one per line) with cathodes tied to chassis ground, enabling fast response to ±30 kV contact discharge. Use Value: Ensures full-speed (480 Mbps) USB signaling remains undistorted with 423 pF capacitance distributed across both lines. |
Use Scenario: Transient suppression on LIN bus lines in door modules and seat controllers where wiring harnesses act as ESD antennas. IC Role / Device Role / Timing Role: Single unidirectional TVS on LIN bus line referenced to battery ground, clamping transients above 13 V stand-off. Use Value: Guarantees uninterrupted LIN communication (up to 20 kbps) during hot-plug events and static discharge near connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13A-E3/57T | Higher clamping voltage (24.4 V @ 9.2 A); SMA package (larger footprint, higher inductance) | Less suitable for space-constrained 12 V automotive signal lines due to larger size and looser clamping | Prefer SMF13A-HM3-08 where board area and clamping tightness are critical. |
| TPD2E007DRYR | Lower capacitance (7 pF), but lower power rating (350 W), dual-channel, not AEC-Q101 qualified | Better for high-speed USB 3.0 or HDMI, unsuitable for 1000 W surge environments like RS-485 or LIN | Choose SMF13A-HM3-08 for automotive-grade robustness and high-energy surge handling. |
Compared with SMAJ13A-E3/57T and TPD2E007DRYR, SMF13A-HM3-08 delivers tighter clamping, smaller DO-219AB footprint, and AEC-Q101 validation-making it optimal for space-limited, high-reliability 12 V signal protection in automotive and industrial systems.
Availability
SMF13A-HM3-08 is available at Aetrix Electronics and suitable for automotive infotainment interfaces, industrial RS-485 ports, and USB 2.0 host protection requiring stable component supply, long lifecycle support, and AEC-Q101 compliance.
Supply support for SMF13A-HM3-08 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, and passive components for automotive, industrial, and computing markets.
The SMF series targets compact, high-power ESD protection for automotive and industrial interfaces, emphasizing low clamping, AEC-Q101 qualification, and SOD-123W-compatible packaging.
FAQ
What is the reverse standoff voltage of the SMF13A-HM3-08?
The SMF13A-HM3-08 has a maximum reverse standoff voltage (VRWM) of 13 V, meaning it remains non-conductive up to this DC or continuous AC voltage level while leaking less than 0.1 μA. This value ensures compatibility with 12 V nominal automotive and industrial signal rails without false triggering.
Is the SMF13A-HM3-08 AEC-Q101 qualified?
Yes, the SMF13A-HM3-08 is AEC-Q101 qualified, having passed stress tests including human body model (HBM) >8 kV, temperature cycling, and high-temperature operating life. This qualification confirms its suitability for automotive applications such as infotainment, body control, and sensor nodes.
What is the clamping voltage of the SMF13A-HM3-08 at its rated peak pulse current?
The SMF13A-HM3-08 exhibits a maximum clamping voltage (VC) of 21.5 V at its rated peak pulse current (IPPM) of 9.3 A under a 10/1000 μs waveform. This clamping level protects downstream 12 V-rated ICs by limiting transient overvoltage to a safe margin below their absolute maximum ratings.
Does the SMF13A-HM3-08 support reflow soldering?
Yes, the SMF13A-HM3-08 is fully compatible with standard reflow soldering processes, with a peak temperature rating of up to 260 °C per J-STD-020 MSL level 1. Its DO-219AB package is optimized for both reflow and wave soldering, ensuring reliable assembly in high-volume manufacturing.
What is the typical junction capacitance of the SMF13A-HM3-08?
The SMF13A-HM3-08 has a typical junction capacitance (CD) of 423 pF measured at 0 V reverse bias and 1 MHz frequency. This value is appropriate for protecting lower-speed interfaces such as RS-485, LIN, and USB 2.0, where signal rise times are ≥1 ns and bandwidth requirements are ≤100 MHz.
SMF13A-HM3-08 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):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 9.3A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 423pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF13A-HM3-08 FAQ
1.How can I place an order for SMF13A-HM3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF13A-HM3-08 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 SMF13A-HM3-08 reliable?
The price and inventory of SMF13A-HM3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF13A-HM3-08 is usually 5 days.
3.What payment methods are accepted for SMF13A-HM3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF13A-HM3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF13A-HM3-08?
SMF13A-HM3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF13A-HM3-08 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 SMF13A-HM3-08?
For technical support, including SMF13A-HM3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF13A-HM3-08 requirements.
6.How does Aetrix verify that SMF13A-HM3-08 is sourced from the original manufacturer or authorized distributors?
All SMF13A-HM3-08 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 SMF13A-HM3-08 meets industry standards.
7.What is the process for return or replacement of SMF13A-HM3-08?
All SMF13A-HM3-08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF13A-HM3-08, 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 SMF13A-HM3-08 part is unused and in its original packaging.
Return procedure for SMF13A-HM3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF13A-HM3-08 Tags
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