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Vishay SMF30A-HE3_A08
- Part No.:
- SMF30A-HE3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF30A-HE3_A08.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,070
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Product details
Overview
SMF30A-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 and power rails. It features a 30 V stand-off voltage (VRWM), 48.4 V maximum clamping voltage at 4.1 A peak pulse current, 200 W peak pulse power (10/1000 μs), ±30 kV IEC 61000-4-2 ESD immunity, and 207 pF typical capacitance at 0 V - deployed in automotive infotainment interfaces and USB 2.0 port protection.
For engineers reviewing the SMF30A-HE3_A08 datasheet, SMF30A-HE3_A08 pinout, SMF30A-HE3_A08 application, or SMF30A-HE3_A08 equivalent, key selection criteria include clamping performance under 4.1 A surge, low capacitance for signal integrity, AEC-Q101 qualification status, SOD-123W-compatible footprint, and thermal resistance of 180 K/W on standard PCB pads.
Technical Context
This device operates as a unidirectional TVS diode with avalanche breakdown behavior, optimized for fast response to ESD transients (sub-nanosecond rise time) and robust clamping during 8/20 μs surges up to 1000 W. Its junction temperature range spans −65 °C to +175 °C, supporting under-hood automotive environments.
The SMF30A-HE3_A08 uses silicon planar technology with low incremental surge resistance and "Low Noise" design, enabling stable clamping without oscillation. It is rated for 50 A non-repetitive forward surge current and exhibits <0.1 μA reverse leakage at VRWM - critical for low-power sensor interface protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 30 V - maximum continuous reverse operating voltage before conduction begins; defines safe operating margin for 24 V automotive systems. |
| Clamping Voltage (VC) | 48.4 V at IPPM = 4.1 A (10/1000 μs) - limits downstream IC voltage stress during ESD events; ensures logic-level compatibility with 3.3 V/5 V receivers. |
| Peak Pulse Power | 200 W (10/1000 μs), 1000 W (8/20 μs) - supports IEC 61000-4-5 surge immunity testing and multi-pulse ESD resilience. |
| Capacitance (CD) | 207 pF at 0 V, 1 MHz - low enough for USB 2.0 (480 Mbps) and CAN FD signal paths without significant signal degradation. |
| ESD Immunity | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds Level 4 requirements for industrial and automotive end-equipment. |
| Thermal Resistance (RthJA) | 180 K/W on 3 mm × 3 mm Cu pads - enables reliable power dissipation without forced cooling in compact layouts. |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including HBM >8 kV, qualifying for use in ADAS camera modules and body control units. |
Pinout & Package
SMF30A-HE3_A08 is housed in the DO-219AB (SMF) package - a low-profile, surface-mount case compatible with SOD-123W, SOD-123F, and SOD-123FL footprints. Dimensions: 3.9 mm × 1.9 mm × 1.08 mm (L × W × H); cathode marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side terminal | Connected to protected signal or power line; conducts surge current toward ground during overvoltage events. |
| Cathode | Ground reference terminal | Connected to system ground plane; establishes clamping reference and enables unidirectional protection path. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Enables sustained protection against repetitive ESD strikes in industrial HMI touch panels without thermal runaway. |
| ±30 kV IEC 61000-4-2 ESD rating | Eliminates need for secondary ESD stages in USB Type-C docking stations and automotive display link interfaces. |
| 207 pF capacitance at 0 V | Maintains signal edge integrity on 480 Mbps USB 2.0 differential pairs with <0.5 dB insertion loss at 240 MHz. |
| AEC-Q101 qualification | Validates long-term reliability in automotive ambient temperatures (−65 °C to +175 °C) and vibration-prone mounting locations. |
| Low-profile DO-219AB package | Reduces board space by 30% vs. SMA packages while maintaining solder joint strength for reflow and wave processes. |
Applications
| Automotive Infotainment Display Interface | USB 2.0 Port Protection |
|---|---|
|
Use Scenario: Protecting LVDS or FPD-Link III video data lines between head unit and center display against ESD from user touch and cable hot-plug events. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed directly at connector entry point to clamp transients before reaching serializer/deserializer ICs. Use Value: 48.4 V clamping voltage prevents damage to 3.3 V receiver inputs; 207 pF capacitance avoids skew between differential pairs. |
Use Scenario: Safeguarding D+ and D− lines of USB 2.0 ports in automotive telematics modules exposed to frequent ESD during accessory plugging. IC Role / Device Role / Timing Role: Standalone ESD suppressor mounted adjacent to USB receptacle, grounded to chassis via short trace. Use Value: ±30 kV contact discharge rating meets ISO 10605 requirements; low capacitance preserves eye diagram integrity at 480 Mbps. |
| Industrial Sensor Signal Conditioning | Power Rail Transient Suppression |
|
Use Scenario: Shielding analog outputs (e.g., 4–20 mA loop drivers) and digital I/O (RS-485, CAN) in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Primary ESD guard on field-side signal traces, paired with series resistors for current limiting. Use Value: 180 K/W thermal resistance allows operation at full derating on standard FR-4 without heatsinking; −65 °C to +175 °C range covers extended industrial temp. |
Use Scenario: Clamping 12 V/24 V supply rails in motor drive control boards subjected to load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Secondary overvoltage clamp parallel to bulk capacitor, activated only during fast transients exceeding VRWM. Use Value: 30 V VRWM provides margin above nominal 24 V rail; 1000 W 8/20 μs rating handles ISO 7637-2 Pulse 5a surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A-E3/57T | Higher clamping voltage (53.3 V at 3.5 A), larger SMA package (4.5 mm × 2.7 mm), 220 pF capacitance. | Less suitable for high-speed data lines due to higher capacitance and slower response; better for power rail-only use. | Select when board space permits larger footprint and higher clamping is acceptable for 24 V power bus protection. |
| TPD2E001DRYR | Bi-directional dual-channel array (2 × 15 pF), 5.5 V VRWM, integrated 4.7 kΩ ESD resistor, QFN-6 package. | Designed specifically for USB D+/D− and HDMI CEC lines; not rated for 24 V systems or automotive AEC-Q101. | Prefer for space-constrained consumer USB ports where ultra-low capacitance (<15 pF) and integrated resistance are required. |
Compared with SMAJ30A-E3/57T and TPD2E001DRYR, SMF30A-HE3_A08 delivers optimal balance of low capacitance (207 pF), automotive qualification, and compact DO-219AB footprint - making it the preferred choice for cost-sensitive, high-reliability 24 V interface protection where signal bandwidth and thermal performance are jointly critical.
Availability
SMF30A-HE3_A08 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial USB host ports, and 24 V sensor interface designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SMF30A-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 Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMF series targets high-speed, low-capacitance ESD protection in space-constrained applications - engineered for AEC-Q101 compliance, fast transient response, and robust surge handling in harsh environments.
FAQ
What is the clamping voltage of SMF30A-HE3_A08 at its rated peak pulse current?
The SMF30A-HE3_A08 has a maximum clamping voltage (VC) of 48.4 V when subjected to its rated peak pulse current of 4.1 A under the 10/1000 μs waveform. This value is measured per IEC 61000-4-5 test conditions and ensures downstream ICs remain within safe operating voltage limits during ESD events. The SMF30A-HE3_A08 maintains this clamping performance across its full operating temperature range.
Is SMF30A-HE3_A08 qualified to AEC-Q101 standards?
Yes, SMF30A-HE3_A08 is AEC-Q101 qualified, meeting stress test requirements for automotive-grade reliability including human body model (HBM) ESD >8 kV, temperature cycling, and high-temperature operating life. This qualification confirms suitability for use in automotive modules such as body control units and infotainment displays. The SMF30A-HE3_A08 carries the "HE3" suffix denoting AEC-Q101 qualification in Vishay's ordering nomenclature.
What is the capacitance of SMF30A-HE3_A08 and how does it affect high-speed signal lines?
The SMF30A-HE3_A08 exhibits 207 pF typical capacitance at 0 V and 1 MHz, measured per standard test conditions. This value is low enough to avoid measurable signal distortion on USB 2.0 (480 Mbps) and CAN FD (5 Mbps) differential lines when placed with minimal stub length. The SMF30A-HE3_A08 achieves this balance without sacrificing clamping performance or surge rating - critical for maintaining eye diagram integrity in real-world layouts.
Does SMF30A-HE3_A08 support both contact and air discharge ESD testing per IEC 61000-4-2?
Yes, SMF30A-HE3_A08 is rated for ±30 kV contact discharge and ±30 kV air discharge per IEC 61000-4-2, tested with 10 pulses per polarity. This exceeds Level 4 requirements and ensures robustness against common ESD failure modes in handheld and panel-mounted equipment. The SMF30A-HE3_A08 achieves this performance using Vishay's "Low Noise" silicon process, which minimizes parasitic oscillation during fast transient conduction.
What package type does SMF30A-HE3_A08 use and is it compatible with standard SMT assembly processes?
SMF30A-HE3_A08 uses the DO-219AB (SMF) package - a low-profile, surface-mount outline measuring 3.9 mm × 1.9 mm × 1.08 mm, with cathode marking via a bar. It is fully compatible with standard reflow and wave soldering processes, including peak temperatures up to 260 °C (MSL level 1). The SMF30A-HE3_A08 footprint aligns with SOD-123W, enabling drop-in replacement in existing layouts without redesign.
SMF30A-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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 4.1A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 207pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF30A-HE3_A08 FAQ
1.How can I place an order for SMF30A-HE3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF30A-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 SMF30A-HE3_A08 reliable?
The price and inventory of SMF30A-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 SMF30A-HE3_A08 is usually 5 days.
3.What payment methods are accepted for SMF30A-HE3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF30A-HE3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF30A-HE3_A08?
SMF30A-HE3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF30A-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 SMF30A-HE3_A08?
For technical support, including SMF30A-HE3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF30A-HE3_A08 requirements.
6.How does Aetrix verify that SMF30A-HE3_A08 is sourced from the original manufacturer or authorized distributors?
All SMF30A-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 SMF30A-HE3_A08 meets industry standards.
7.What is the process for return or replacement of SMF30A-HE3_A08?
All SMF30A-HE3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF30A-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 SMF30A-HE3_A08 part is unused and in its original packaging.
Return procedure for SMF30A-HE3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF30A-HE3_A08 Tags
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