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Vishay SMF10A-HM3_A08
- Part No.:
- SMF10A-HM3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF10A-HM3_A08.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,540
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Product details
Overview
SMF10A-HM3_A08 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for transient voltage suppression in low-capacitance signal lines. It features a 10 V stand-off voltage (VRWM), 17 V maximum clamping voltage at 11.8 A peak pulse current, 562 pF typical capacitance at 0 V, ±30 kV IEC 61000-4-2 ESD immunity, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMF10A-HM3_A08 datasheet, SMF10A-HM3_A08 pinout, SMF10A-HM3_A08 application, or SMF10A-HM3_A08 equivalent, this device is selected for high-reliability ESD hardening of USB 2.0, HDMI, CAN FD, and automotive sensor interfaces where low clamping voltage and robust surge handling are critical.
Technical Context
The SMF10A-HM3_A08 operates as a single-channel unidirectional TVS diode with avalanche breakdown behavior, optimized for fast response (<1 ns) to electrostatic discharge events per IEC 61000-4-2. Its low incremental surge resistance ensures minimal voltage overshoot during 10/1000 μs transients.
It is rated for 200 W peak pulse power (10/1000 μs), 1000 W (8/20 μs), and supports continuous operation from –65 °C to +175 °C. The device uses Vishay's "Low Noise" silicon technology and is qualified to AEC-Q101 for automotive under-hood and infotainment applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 10 V - Maximum continuous reverse operating voltage before conduction begins; defines safe signal swing range. |
| Clamping Voltage (VC) | 17 V max at 11.8 A - Peak voltage seen by protected circuit during 10/1000 μs surge; limits stress on downstream ICs. |
| Peak Pulse Current (IPPM) | 11.8 A (10/1000 μs) - Maximum non-destructive surge current capability; determines survivability against common transients. |
| Capacitance (CD) | 562 pF at 0 V, 1 MHz - Signal-line loading effect; suitable for ≤10 Mbps digital interfaces like CAN or RS-485. |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - Full immunity to worst-case human-body ESD events without degradation. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and UHAST; approved for under-hood use. |
| Package | DO-219AB (SOD-123W compatible footprint) - Low-profile (1.08 mm height), reflow-solderable, MSL Level 1. |
Pinout & Package
SMF10A-HM3_A08 is housed in the DO-219AB (SMF) package: 3.9 mm × 1.9 mm × 1.08 mm, cathode-marked with a bar on the top surface. The device has two terminals: anode and cathode, mounted in a planar SMD configuration with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Signal Line Connection | Connected to protected line (e.g., USB D+); conducts during negative transients when cathode is biased higher. |
| Cathode | Ground Reference / Clamp Node | Connected to system ground or low-impedance return path; provides low-impedance shunt to divert ESD energy away from IC pins. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 surges in industrial and automotive environments without derating. |
| ±30 kV ESD immunity (IEC 61000-4-2) | Eliminates need for external ESD test conditioning; meets full automotive ESD compliance requirements out-of-box. |
| 17 V clamping at 11.8 A | Keeps protected ICs (e.g., USB PHY, CAN transceiver) below absolute maximum ratings during worst-case transients. |
| AEC-Q101 qualification | Validates long-term reliability under thermal shock, humidity, and high-temperature bias for automotive production deployment. |
| 562 pF capacitance at 0 V | Preserves signal integrity on medium-speed buses (e.g., CAN FD up to 5 Mbps, LIN, SENT) without excessive rise-time degradation. |
Applications
| Automotive Sensor Interface | CAN FD Data Line Protection |
|---|---|
Use Scenario: Protecting analog output pins of pressure, temperature, or position sensors in engine control modules exposed to under-hood ESD and load dump. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor output and microcontroller ADC input, referenced to chassis ground. Use Value: Prevents latch-up or gate oxide damage in MCU inputs while maintaining <1% gain error due to low leakage (<0.1 μA at 10 V). | Use Scenario: Safeguarding CAN FD physical layer transceivers (e.g., TCAN1042, TJA1044) against ESD events on differential bus lines. IC Role / Device Role / Timing Role: One SMF10A-HM3_A08 per line (CAN_H and CAN_L), mounted close to connector with short trace routing. Use Value: Clamps transients to ≤17 V within <1 ns, preserving bit timing integrity and preventing false dominant/recessive state errors at 5 Mbps. |
| USB 2.0 Port Hardening | Industrial RS-485 Transceiver Protection |
Use Scenario: Adding secondary ESD protection on USB 2.0 D+ and D− lines downstream of integrated port protection in docking stations or medical peripherals. IC Role / Device Role / Timing Role: Low-capacitance TVS placed after series impedance matching, referenced to USB shield or local ground plane. Use Value: 562 pF capacitance avoids signal integrity issues (eye diagram closure <10%) while enabling full ±30 kV IEC 61000-4-2 compliance. | Use Scenario: Protecting half-duplex RS-485 transceivers (e.g., MAX13487, SN65HVD72) in factory automation nodes connected to long cable runs. IC Role / Device Role / Timing Role: Bidirectional protection implemented using two unidirectional devices (anode-to-line, cathode-to-ground) per data line. Use Value: Withstands 10/1000 μs surges up to 11.8 A, meeting IEC 61000-4-4 level 4 immunity without sacrificing data rate (≤20 Mbps). |
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; better for power rail protection due to higher PPP (400 W). | Select when board space allows larger footprint and lower clamping priority outweighs speed constraints. |
| TPD2E001DRYR | Integrated dual-channel, 15 pF per line, 12 V VRWM, not AEC-Q101 qualified. | Designed for portable electronics; lacks automotive qualification and surge rating (only 4 A IPPM). | Prefer for space-constrained consumer USB ports where AEC-Q101 and high-energy surge immunity are not required. |
Compared with SMAJ10A-E3/57T and TPD2E001DRYR, SMF10A-HM3_A08 delivers optimal balance of low clamping (17 V), compact DO-219AB size, AEC-Q101 qualification, and 11.8 A surge capacity-making it the preferred choice for automotive and industrial signal-line protection where reliability and layout efficiency are jointly critical.
Availability
SMF10A-HM3_A08 is available at Aetrix Electronics and suitable for automotive sensor interfaces, CAN FD data lines, USB 2.0 port hardening, and industrial RS-485 transceiver protection requiring stable component supply across multi-year production cycles.
Supply support for SMF10A-HM3_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 communications systems where small size and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage specification for SMF10A-HM3_A08?
The SMF10A-HM3_A08 has a maximum reverse clamping voltage (VC) of 17 V at 11.8 A peak pulse current with a 10/1000 μs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The actual clamping performance of SMF10A-HM3_A08 remains consistent across its full operating temperature range (–65 °C to +175 °C).
Is SMF10A-HM3_A08 qualified for automotive applications?
Yes, SMF10A-HM3_A08 is AEC-Q101 qualified and rated for operation from –65 °C to +175 °C. It has passed all required stress tests including high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress testing (UHAST). This qualification makes SMF10A-HM3_A08 suitable for under-hood and infotainment applications where long-term reliability under thermal and mechanical stress is essential.
What is the capacitance of SMF10A-HM3_A08 and how does it affect signal integrity?
The SMF10A-HM3_A08 exhibits 562 pF typical junction capacitance at 0 V and 1 MHz. This value directly impacts high-speed signal lines: it is low enough to avoid significant rise-time degradation on CAN FD (≤5 Mbps) and RS-485 (≤20 Mbps) but not suitable for USB 3.0 or PCIe. For USB 2.0, SMF10A-HM3_A08 maintains eye diagram integrity with <10% closure, making it appropriate for secondary port-level ESD hardening.
Does SMF10A-HM3_A08 support automated PCB assembly processes?
Yes, SMF10A-HM3_A08 is fully compatible with standard SMT processes including wave and reflow soldering. Its DO-219AB package meets J-STD-020 MSL Level 1 requirements, allowing unlimited floor life before reflow. Peak reflow temperature is rated to 260 °C, and the device is RoHS-compliant with lead-free tin terminations-ensuring reliable manufacturability in high-volume electronics production using SMF10A-HM3_A08.
How does the SMF10A-HM3_A08 compare to the SMF10A-E3-08 variant?
The SMF10A-HM3_A08 and SMF10A-E3-08 share identical electrical specifications, package (DO-219AB), and AEC-Q101 qualification. The difference lies in packaging and traceability: HM3_A08 denotes 3,000 units per 7″ reel with A08 tape-and-reel coding and enhanced traceability for automotive customers, whereas E3-08 uses standard packaging without extended lot tracking. Both perform identically in-circuit as SMF10A-HM3_A08.
SMF10A-HM3_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):
- 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 (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF10A-HM3_A08 FAQ
1.How can I place an order for SMF10A-HM3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF10A-HM3_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 SMF10A-HM3_A08 reliable?
The price and inventory of SMF10A-HM3_A08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF10A-HM3_A08 is usually 5 days.
3.What payment methods are accepted for SMF10A-HM3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF10A-HM3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF10A-HM3_A08?
SMF10A-HM3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF10A-HM3_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 SMF10A-HM3_A08?
For technical support, including SMF10A-HM3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF10A-HM3_A08 requirements.
6.How does Aetrix verify that SMF10A-HM3_A08 is sourced from the original manufacturer or authorized distributors?
All SMF10A-HM3_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 SMF10A-HM3_A08 meets industry standards.
7.What is the process for return or replacement of SMF10A-HM3_A08?
All SMF10A-HM3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF10A-HM3_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 SMF10A-HM3_A08 part is unused and in its original packaging.
Return procedure for SMF10A-HM3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF10A-HM3_A08 Tags
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