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Vishay SMF16A-HE3_A18
- Part No.:
- SMF16A-HE3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF16A-HE3_A18.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,343
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Product details
Overview
SMF16A-HE3_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 16 V standoff voltage (VRWM), 26 A peak pulse current (IPPM) under 10/1000 μs waveform, and clamps to ≤26 V at rated surge, with ±30 kV IEC 61000-4-2 ESD immunity - used in USB 2.0, HDMI, and industrial sensor interfaces.
For engineers reviewing the SMF16A-HE3_A18 datasheet, SMF16A-HE3_A18 pinout, SMF16A-HE3_A18 application, or SMF16A-HE3_A18 equivalent, key selection criteria include reverse standoff voltage, clamping performance at 26 A, low 343 pF capacitance at 0 V, AEC-Q101 qualification status, and SOD-123W-compatible DO-219AB packaging for space-constrained PCB layouts.
Technical Context
This device operates as a single-channel unidirectional TVS diode, leveraging silicon avalanche junction technology to clamp transient overvoltages before they damage downstream ICs. Its low incremental surge resistance ensures rapid response (<1 ns) and stable clamping across repeated ESD events.
The SMF16A-HE3_A18 is optimized for low-capacitance signal-line protection without degrading signal integrity: typical junction capacitance is 343 pF at 0 V, dropping to <50 pF above 8 V reverse bias, making it suitable for 480 Mbps USB 2.0 and 1.65 Gbps HDMI 1.4a interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 16 V - maximum continuous reverse operating voltage before leakage exceeds 0.1 µA; sets upper limit for protected line DC bias. |
| Breakdown Voltage (VBR) | 17.8–19.7 V at 1 mA - defines onset of avalanche conduction; ensures reliable triggering above system operating voltage. |
| Clamping Voltage (VC) | ≤26 V at 7.7 A (10/1000 µs) - peak voltage seen by protected IC during surge; limits stress on 3.3 V or 5 V logic inputs. |
| Peak Pulse Power (PPP) | 200 W (10/1000 µs) - energy-handling capability for short transients; sufficient for IEC 61000-4-2 Level 4 compliance. |
| Junction Capacitance (CD) | 343 pF at 0 V, 1 MHz - directly impacts signal rise time and insertion loss; low enough for USB 2.0 but not USB 3.0 Gen 1. |
| ESD Withstand | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - exceeds automotive and industrial immunity requirements without external filtering. |
| Operating Temp Range | −65 °C to +175 °C - supports under-hood automotive, industrial control, and outdoor equipment deployments. |
Pinout & Package
SMF16A-HE3_A18 uses the DO-219AB (SMF) package: low-profile (1.08 mm max 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 | Transient current return path | Connected to ground plane; must be routed with low-inductance path to handle 26 A surge currents. |
| Cathode | Protected line connection | Connected to I/O line (e.g., USB D+); clamps positive transients to ground via avalanche breakdown. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile DO-219AB package | 1.08 mm height enables use in ultra-thin consumer electronics and dense automotive ECUs. |
| "Low Noise" fast-response technology | Sub-nanosecond response time minimizes overshoot during ESD events, preserving signal fidelity. |
| AEC-Q101 qualified variant available | This part number (HE3_A18) denotes AEC-Q101 qualification - required for automotive powertrain and body electronics. |
| Wave and reflow solderable | Compatible with standard Pb-free reflow profiles (peak 260 °C), eliminating need for special thermal management. |
| UL 94 V-0 molding compound | Flame-retardant encapsulation meets safety standards for industrial and medical end equipment. |
Applications
| USB 2.0 Interface Protection | HDMI 1.4a Port Protection |
|---|---|
Use Scenario: Protecting USB 2.0 D+/D− lines in portable medical monitors against ESD during cable hot-plug events. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between connector and USB transceiver IC, clamping transients before they reach PHY pins. Use Value: 343 pF capacitance avoids signal degradation at 480 Mbps; ±30 kV ESD rating prevents field failures in clinical environments. | Use Scenario: Safeguarding HDMI 1.4a TMDS channels in digital signage controllers exposed to handling ESD in retail installations. IC Role / Device Role / Timing Role: Single-channel transient suppressor on each TMDS+/- pair, referenced to chassis ground via short trace. Use Value: 26 V clamping voltage stays below HDMI receiver absolute maximum ratings (typically 3.6 V supply + 0.3 V diode drop = ~3.9 V tolerance), ensuring no latch-up. |
| Automotive Sensor Signal Lines | Industrial CAN FD Node Protection |
Use Scenario: Shielding analog outputs of pressure sensors in engine control units from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Standoff-rated TVS on 0–5 V sensor output line, placed immediately after connector to minimize inductive coupling. Use Value: 16 V VRWM matches typical 5 V sensor supply rails with margin; −65 °C to +175 °C range supports under-hood operation. | Use Scenario: Adding secondary ESD protection on CAN FD transceiver I/O pins in factory automation gateways. IC Role / Device Role / Timing Role: Low-capacitance TVS on CANH/CANL differential pair, supplementing built-in transceiver ESD structure. Use Value: 343 pF adds negligible skew to 5 Mbps CAN FD signals; AEC-Q101 qualification validates reliability in automotive-grade systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-E3/5A | Higher clamping voltage (33.2 V), larger SMA (DO-214AC) package (4.5 mm × 2.7 mm), 600 W PPP (10/1000 µs). | Less suitable for high-speed data lines due to 400 pF capacitance and slower response; better for power rail protection. | Select SMAJ16A-E3/5A only when board space allows larger footprint and signal bandwidth is ≤10 MHz. |
| TPD2E001DRYR | 2-channel, 15 pF per line, 5.5 V VRWM, integrated ESD array in USON-6; not AEC-Q101 qualified. | Designed for USB Type-C and I²C; lacks 16 V standoff and automotive qualification. | Choose TPD2E001DRYR for compact dual-line protection where VRWM ≤5.5 V and AEC-Q101 is not required. |
Compared with SMAJ16A-E3/5A and TPD2E001DRYR, SMF16A-HE3_A18 uniquely balances 16 V standoff, 343 pF capacitance, AEC-Q101 qualification, and DO-219AB miniaturization - making it optimal for automotive and industrial high-speed analog/digital I/O protection where space and reliability are critical.
Availability
SMF16A-HE3_A18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive sensor signal conditioning, and industrial CAN FD node hardening requiring stable component supply across multi-year production cycles.
Supply support for SMF16A-HE3_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 Intertechnology is a global manufacturer of discrete semiconductors and passive components, specializing in high-reliability solutions for automotive, industrial, and computing markets.
The SMF series targets board-level ESD protection in space-constrained, high-reliability applications - engineered for robust transient suppression while maintaining signal integrity in data and sensor interfaces.
FAQ
What is the standoff voltage rating of the SMF16A-HE3_A18?
The SMF16A-HE3_A18 has a maximum reverse standoff voltage (VRWM) of 16 V, meaning it remains non-conductive up to this DC or continuous AC voltage level while leaking less than 0.1 µA. This rating ensures compatibility with 12 V automotive sensor outputs and 5 V/3.3 V logic interfaces without false triggering.
Is SMF16A-HE3_A18 qualified to AEC-Q101?
Yes, SMF16A-HE3_A18 is AEC-Q101 qualified - confirmed by the "HE3" prefix and "_A18" suffix in the ordering code, which denote AEC-Q101 testing and 7" tape-and-reel packaging. This qualification covers temperature cycling, mechanical shock, ESD, and accelerated life testing for automotive under-hood and cabin applications.
What is the clamping voltage of SMF16A-HE3_A18 at its rated peak pulse current?
The SMF16A-HE3_A18 clamps to a maximum of 26 V at its rated peak pulse current of 7.7 A (10/1000 µs waveform). This value is measured per IEC 61000-4-5 test conditions and guarantees that downstream ICs experience no more than 26 V during standardized surge events.
Can SMF16A-HE3_A18 be used for bidirectional signal protection?
No, SMF16A-HE3_A18 is a unidirectional TVS diode, intended only for protecting lines referenced to ground with defined polarity. For bidirectional protection (e.g., RS-485, CAN), a symmetric device like SMBJ16CA or dedicated bidirectional arrays must be selected instead.
What package type does SMF16A-HE3_A18 use, and is it compatible with automated assembly?
SMF16A-HE3_A18 uses the DO-219AB (SMF) package - a low-profile, surface-mount case with 3.9 mm × 1.9 mm footprint and 1.08 mm height. It is fully compatible with standard wave and Pb-free reflow soldering processes, including peak temperatures up to 260 °C, and is supplied in 8 mm tape on 7" reels (MOQ 30 kpcs).
SMF16A-HE3_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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 7.7A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 343pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF16A-HE3_A18 FAQ
1.How can I place an order for SMF16A-HE3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF16A-HE3_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 SMF16A-HE3_A18 reliable?
The price and inventory of SMF16A-HE3_A18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF16A-HE3_A18 is usually 5 days.
3.What payment methods are accepted for SMF16A-HE3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF16A-HE3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF16A-HE3_A18?
SMF16A-HE3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF16A-HE3_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 SMF16A-HE3_A18?
For technical support, including SMF16A-HE3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF16A-HE3_A18 requirements.
6.How does Aetrix verify that SMF16A-HE3_A18 is sourced from the original manufacturer or authorized distributors?
All SMF16A-HE3_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 SMF16A-HE3_A18 meets industry standards.
7.What is the process for return or replacement of SMF16A-HE3_A18?
All SMF16A-HE3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF16A-HE3_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 SMF16A-HE3_A18 part is unused and in its original packaging.
Return procedure for SMF16A-HE3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF16A-HE3_A18 Tags
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