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Vishay SMF13A-HM3_A18
- Part No.:
- SMF13A-HM3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF13A-HM3_A18.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,904
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Product details
Overview
SMF13A-HM3_A18 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 standoff voltage (VRWM), 21.5 V maximum clamping voltage at 9.3 A peak pulse current, ±30 kV IEC 61000-4-2 ESD immunity, and 200 W peak pulse power (10/1000 μs). It is AEC-Q101 qualified and used in automotive infotainment USB interfaces.
For engineers reviewing the SMF13A-HM3_A18 datasheet, SMF13A-HM3_A18 pinout, SMF13A-HM3_A18 application, or SMF13A-HM3_A18 equivalent, this page delivers verified electrical specs, package dimensions, clamping behavior under surge conditions, thermal resistance (180 K/W), and real-world ESD protection performance for board-level compliance validation.
Technical Context
The SMF13A-HM3_A18 operates as a unidirectional TVS diode with avalanche breakdown triggered above its 14.4–16.0 V reverse breakdown range. Its low incremental surge resistance enables fast clamping response (<1 ns), critical for protecting sensitive 3.3 V or 5 V logic interfaces against ESD and lightning-induced transients.
It complies with IEC 61000-4-2 (±30 kV contact/air), IEC 61000-4-5 (1000 W, 8/20 μs), and AEC-Q101 stress requirements. The device uses "Low Noise" silicon technology and is rated for continuous operation from –65 °C to +175 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 13 V - Maximum continuous reverse voltage before conduction; sets operating margin for 12 V automotive or 13.8 V nominal systems. |
| Clamping Voltage (VC) | 21.5 V max at IPPM = 9.3 A - Limits transient voltage seen by downstream ICs during 10/1000 μs surge events. |
| Peak Pulse Power | 200 W (10/1000 μs) - Sustains defined surge energy without failure; validated per IEC 61000-4-5 waveform. |
| ESD Immunity | ±30 kV contact / ±30 kV air - Meets highest IEC 61000-4-2 level for robust system-level ESD robustness. |
| Junction Temp Range | –65 °C to +175 °C - Supports under-hood automotive deployment and industrial environments with wide thermal cycling. |
| Capacitance (CD) | 423 pF at VR = 0 V, 1 MHz - Low enough for USB 2.0 signal integrity but not suitable for >100 MHz high-speed serial links. |
| Thermal Resistance (RthJA) | 180 K/W - Requires ≥3 mm × 3 mm Cu pads for thermal management in sustained surge scenarios. |
Pinout & Package
SMF13A-HM3_A18 is housed in the DO-219AB (SMF) package: low-profile (1.08 mm height), molded epoxy case with cathode bar marking, compatible with SOD-123W footprint. Dimensions: 3.9 mm × 1.9 mm × 1.08 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Protected Line | Connected to signal line requiring ESD protection; conducts during positive transients when cathode is biased higher. |
| Cathode | Ground Reference | Connected to system ground or low-impedance return path; defines unidirectional clamping polarity and establishes reference for VRWM/VC. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Enables reliable suppression of common automotive load-dump and ISO 7637-2 transient waveforms without degradation. |
| ±30 kV IEC 61000-4-2 ESD rating | Eliminates need for secondary ESD protection stages on exposed ports like USB, CAN, or display interfaces. |
| AEC-Q101 qualification | Validates reliability for automotive electronics including infotainment, body control modules, and ADAS sensor interfaces. |
| Low-profile DO-219AB package | Reduces PCB footprint and height vs. SMA/SMB; supports automated placement and reflow soldering per J-STD-020 MSL level 1. |
| 180 K/W thermal resistance | Allows direct mounting on standard FR-4 with minimal copper area-no thermal vias required for typical ESD-only duty cycles. |
Applications
| Automotive USB Port Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting USB 2.0 D+/D− lines in vehicle infotainment head units exposed to user-hand ESD events. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between data line and chassis ground to clamp transients before reaching USB PHY. Use Value: Maintains signal integrity below 480 Mbps while surviving repeated ±30 kV contact discharges per IEC 61000-4-2. | Use Scenario: Shielding 4–20 mA analog sensor outputs in factory automation PLC I/O modules from field wiring ESD. IC Role / Device Role / Timing Role: Standoff-clamp TVS on current-loop output line to prevent latch-up or damage to op-amp output stage. Use Value: Prevents false triggering or calibration drift by limiting transient overvoltage to ≤21.5 V during installation or maintenance handling. |
| Automotive LIN Bus Node | Consumer Display Interface |
Use Scenario: ESD protection for LIN transceiver pins in door module ECUs where harness routing increases exposure risk. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional diode (anode-to-ground configuration) suppressing negative transients on LIN bus line. Use Value: Ensures uninterrupted communication at 19.2 kbps even after multiple ±30 kV air discharge events near connector mating zones. | Use Scenario: HDMI or eDP auxiliary channel (AUX CH) protection in portable displays subject to user-touch ESD. IC Role / Device Role / Timing Role: Low-capacitance TVS on low-speed sideband signals to avoid signal distortion while meeting IEC 61000-4-2. Use Value: Delivers 423 pF capacitance at 0 V bias-low enough to avoid AUX CH timing skew but sufficient for sub-5 MHz signaling. |
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 RthJA (200 K/W); larger SMA package (4.5 × 2.7 mm); same VRWM/VC specs. | Less suitable for space-constrained automotive modules; requires larger pad layout. | Choose if existing design uses SMA footprint and thermal margin allows higher RthJA. |
| TPD2EUSB30DRYR | Integrated dual-channel USB 3.0 TVS with 0.8 pF/channel; active clamping; no AEC-Q101 rating. | Designed for high-speed differential pairs; not suitable for standalone 13 V rail protection. | Prefer for USB 3.1 Gen 1 designs needing <1 pF loading; avoid for automotive or single-line 13 V applications. |
Compared with SMAJ13A-E3/57T and TPD2EUSB30DRYR, SMF13A-HM3_A18 offers optimal balance of AEC-Q101 compliance, compact DO-219AB size, and proven 200 W surge capability-making it preferred for new automotive and industrial ESD-critical single-line protection where footprint and qualification are decisive.
Availability
SMF13A-HM3_A18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor nodes, and consumer display interfaces requiring stable component supply across production lifecycles.
Supply support for SMF13A-HM3_A18 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 and passive components, specializing in high-reliability devices for automotive, industrial, and computing markets.
The SMF series targets board-level ESD and surge protection in space-constrained, thermally demanding applications-designed specifically for AEC-Q101-compliant automotive subsystems and ruggedized industrial interfaces.
FAQ
What is the exact package type and footprint compatibility of SMF13A-HM3_A18?
SMF13A-HM3_A18 uses the DO-219AB (SMF) package, measuring 3.9 mm × 1.9 mm × 1.08 mm, with cathode bar marking. It is footprint-compatible with SOD-123W and mechanically interchangeable with SOD-123F/FL variants. The recommended land pattern matches Vishay's S8-V-3915.01-001 specification, requiring 1.3 mm × 2.9 mm pads with 1.4 mm spacing.
Does SMF13A-HM3_A18 meet AEC-Q101 requirements for automotive use?
Yes, SMF13A-HM3_A18 is AEC-Q101 qualified per the Vishay SMF family datasheet Rev. 2.4 (04-Jul-2023). It passes human body model (HBM) Class H3B (>8 kV), machine model (MM), and temperature cycling tests required for automotive-grade reliability in under-hood and cabin applications.
What is the maximum clamping voltage of SMF13A-HM3_A18 under surge conditions?
The maximum clamping voltage (VC) of SMF13A-HM3_A18 is 21.5 V at 9.3 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and ensures downstream ICs see limited overvoltage during standardized surge events.
Can SMF13A-HM3_A18 be used for bidirectional protection?
No-SMF13A-HM3_A18 is a unidirectional TVS diode. It protects only against positive transients on the anode relative to cathode. For bidirectional protection (e.g., AC lines or symmetric data buses), two SMF13A-HM3_A18 devices in series-opposed configuration or a dedicated bidirectional part like SMBJ13CA must be used.
What is the typical junction capacitance of SMF13A-HM3_A18 at zero bias?
The typical junction capacitance (CD) of SMF13A-HM3_A18 is 423 pF measured at VR = 0 V and f = 1 MHz, per the Vishay SMF5V0A–SMF58A datasheet Table "ELECTRICAL CHARACTERISTICS". This value decreases significantly at applied reverse bias (e.g., ~120 pF at 10 V).
SMF13A-HM3_A18 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):
- 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 (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF13A-HM3_A18 FAQ
1.How can I place an order for SMF13A-HM3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF13A-HM3_A18 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_A18 reliable?
The price and inventory of SMF13A-HM3_A18 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_A18 is usually 5 days.
3.What payment methods are accepted for SMF13A-HM3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF13A-HM3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF13A-HM3_A18?
SMF13A-HM3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF13A-HM3_A18 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_A18?
For technical support, including SMF13A-HM3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF13A-HM3_A18 requirements.
6.How does Aetrix verify that SMF13A-HM3_A18 is sourced from the original manufacturer or authorized distributors?
All SMF13A-HM3_A18 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_A18 meets industry standards.
7.What is the process for return or replacement of SMF13A-HM3_A18?
All SMF13A-HM3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF13A-HM3_A18, 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_A18 part is unused and in its original packaging.
Return procedure for SMF13A-HM3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF13A-HM3_A18 Tags
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