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onsemi SMF16AT1G
- Part No.:
- SMF16AT1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SOD-123F
- Datasheet:
-
SMF16AT1G.pdf
- Description:
- TVS DIODE 16VWM 26VC SOD123FL
- Quantity:
- Payment:
- Shipping:
Inventory:6,212
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Product details
Overview
SMF16AT1G from onsemi is a unidirectional Zener transient voltage suppressor (TVS) diode in SOD-123FL package, designed for clamping ESD and surge transients on DC power and signal lines. It features a 16 V working peak reverse voltage (VRWM), 19.7 V maximum breakdown voltage (VBR), 26 A peak pulse current (IPP), and 7.7 V clamping voltage (VC) at IPP - enabling robust protection of 3.3 V/5 V/12 V logic interfaces and power rails in portable electronics.
For engineers reviewing the SMF16AT1G datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM ≥ circuit operating voltage, VC margin relative to IC absolute maximum ratings, IEC61000-4-2 Level 4 (±16 kV HBM) compliance, and SOD-123FL footprint compatibility with space-constrained PCB layouts.
Technical Context
The SMF16AT1G operates as a unidirectional avalanche diode, entering low-impedance conduction when reverse voltage exceeds its VBR (17.8–19.7 V). Its fast <1 ns response time ensures suppression before downstream ICs experience overstress, while its 200 W peak pulse power rating (10/1000 µs waveform) supports industrial-grade surge immunity.
Thermal design relies on low junction-to-lead resistance (RJcathode = 26 °C/W) and MSL 1 reflow compatibility (260 °C peak). The device exhibits <1 µA leakage at VRWM and maintains stable clamping performance across –55 °C to +150 °C operating range, making it suitable for automotive infotainment power inputs and USB-C VBUS line protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Peak Reverse Voltage (VRWM) | 16 V - must be ≥ nominal DC rail voltage (e.g., 12 V system) to avoid leakage during normal operation |
| Breakdown Voltage (VBR) @ IT = 1 mA | 17.8–19.7 V - defines onset of avalanche conduction; tight tolerance enables predictable turn-on |
| Clamping Voltage (VC) @ IPP = 26 A | 7.7 V - limits transient voltage seen by protected IC; 2.3× VRWM ratio indicates strong clamping efficiency |
| Peak Pulse Power (Ppk) | 200 W @ 10/1000 µs - sustains IEC61000-4-5 Level 3 (1 kV/42 Ω) surges without degradation |
| ESD Withstand (HBM) | Class 3 (>16 kV) - meets IEC61000-4-2 Level 4 for direct discharge into connectors or buttons |
| Leakage Current @ VRWM | ≤1 µA - negligible standby power loss; safe for battery-backed circuits and low-power sensors |
| Package | SOD-123FL - 2.7 × 1.6 mm footprint, 1.0 mm max height; compatible with automated SMT placement and reflow |
Pinout & Package
SOD-123FL surface-mount package with cathode indicated by polarity band. Low-profile, Pb-free matte tin finish; qualified for MSL 1 and 260 °C reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to protected line (e.g., VBUS); conducts during overvoltage to shunt current to ground |
| 2 (Non-banded End) | Anode | Connected to ground reference; establishes reverse-bias orientation for unidirectional clamping |
Key Features
| Feature | Design Value |
|---|---|
| IEC61000-4-2 Level 4 ESD Protection | Withstands ±16 kV contact discharge - eliminates need for external ESD diodes on USB, HDMI, or button lines |
| Response Time & Clamping Speed | <1 ns turn-on - clamps transients before propagation to sensitive CMOS inputs (e.g., microcontroller GPIO) |
| Low Clamping Ratio (VC/VRWM) | 0.48 - superior voltage limiting vs. standard TVS diodes (typ. 0.6–0.8), reducing risk of latch-up in 3.3 V ICs |
| Small Footprint & Height | 8.45 mm² area, 1.0 mm max height - enables placement adjacent to connectors or IC pads in ultra-thin mobile designs |
| Pb-Free & RoHS Compliant | 100% matte Sn lead finish - meets global environmental regulations without compromising solderability or thermal cycling reliability |
Applications
| USB Power Delivery Input Protection | Automotive Infotainment Display Interface |
|---|---|
Use Scenario: Protecting VBUS line of USB-C receptacles against hot-plug surges and ESD events during cable insertion. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between VBUS and chassis ground, clamping transients before they reach USB PD controller or power switch. Use Value: Prevents damage to TUSB320 or FUSB302 PD controllers during repeated plug/unplug cycles; maintains 5 V/9 V/15 V/20 V PD negotiation integrity. |
Use Scenario: Shielding LVDS or MIPI DSI data lines from ESD induced by user touch on center console displays. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (anode grounded) on each differential pair, leveraging low capacitance (<100 pF) to preserve signal integrity. Use Value: Enables >100,000 hot-swap cycles without signal degradation; meets ISO 10605 (330 pF/330 Ω) automotive ESD requirements. |
| Industrial PLC Digital Input Protection | Smartphone Camera Module Interface |
Use Scenario: Safeguarding 24 V DC digital input terminals against lightning-induced surges in factory automation systems. IC Role / Device Role / Timing Role: Primary clamping device in series with current-limiting resistor, diverting 1 kV/42 Ω surges per IEC61000-4-5 Level 3. Use Value: Eliminates need for secondary MOV-based protection stages; reduces BOM count and board area while maintaining SIL-2 functional safety margins. |
Use Scenario: Guarding CSI-2 clock and data lanes between image sensor and application processor against ESD during module assembly and end-user handling. IC Role / Device Role / Timing Role: Ultra-low-capacitance TVS placed directly at connector interface, minimizing stub length to preserve 1.5 Gbps data rate. Use Value: Prevents pixel corruption or sensor reset caused by ESD-induced ground bounce; validated for JEDEC JESD22-A114F HBM testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A | DO-214AC package (4.5 × 2.7 mm); 200 W Ppk; higher VC (25.1 V) and VRWM (16 V same) | Larger footprint; less suitable for space-constrained mobile designs but better thermal dissipation in high-repetition surge environments | Select SMAJ16A when board layout allows larger package and higher sustained surge duty cycle is required. |
| TPSMA6.8A | SOD-123FL package; lower VRWM (6.8 V); 100 W Ppk; VC = 11.5 V @ 10.5 A | Not suitable for 12–16 V rails; intended for 3.3 V/5 V logic; lower surge capacity limits use to consumer-grade ESD-only scenarios | Choose TPSMA6.8A only for low-voltage I/O protection where VRWM matching is critical and surge energy is limited to IEC61000-4-2. |
Compared with SMAJ16A and TPSMA6.8A, the SMF16AT1G delivers optimal balance of compact SOD-123FL size, 16 V VRWM precision, and 200 W surge capability - making it the preferred choice for modern 12 V embedded systems requiring both ESD and surge resilience in minimal PCB area.
Availability
SMF16AT1G is available at Aetrix Electronics and suitable for USB-C power delivery interfaces, automotive display data links, and industrial PLC digital inputs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMF16AT1G 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
onsemi (Nasdaq: ON) is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The SMFxxAT1G series belongs to onsemi's transient voltage suppression portfolio, engineered specifically for high-reliability, space-constrained DC line protection in portable and automotive electronics where low clamping voltage and ultra-fast response are mandatory.
FAQ
What is the clamping voltage of SMF16AT1G at its rated peak pulse current?
The SMF16AT1G has a maximum clamping voltage (VC) of 7.7 V when subjected to its peak pulse current (IPP) of 26 A under the 10/1000 µs waveform. This value is guaranteed per the datasheet's Electrical Characteristics table and reflects worst-case conduction behavior during surge events - critical for verifying margin below protected IC's absolute maximum voltage rating.
Is SMF16AT1G unidirectional or bidirectional, and how does that affect circuit placement?
The SMF16AT1G is a unidirectional TVS diode, meaning it conducts only during reverse overvoltage (cathode positive relative to anode). In practice, this requires connecting its cathode to the protected line (e.g., VBUS) and anode to ground. It cannot protect against positive transients on grounded lines - unlike bidirectional devices - so correct polarity alignment is essential during PCB layout.
Does SMF16AT1G meet automotive qualification standards such as AEC-Q200?
The SMF16AT1G is not AEC-Q200 qualified. While it operates from –55 °C to +150 °C and supports automotive temperature ranges, onsemi does not list it in their AEC-Q200 stress-tested product catalog. For automotive applications requiring formal qualification, engineers should select AEC-Q200-certified variants like the SMBJ16A-Q or consult onsemi's automotive-grade TVS portfolio.
What is the maximum leakage current of SMF16AT1G at its working peak reverse voltage?
The SMF16AT1G exhibits a maximum reverse leakage current (IR) of 1 µA when biased at its VRWM of 16 V and measured at 25 °C. This ultra-low leakage ensures minimal impact on battery life in always-on portable devices and avoids false triggering in high-impedance sensing circuits powered from the same rail.
Can SMF16AT1G be used to protect AC signal lines?
No - the SMF16AT1G is strictly a unidirectional DC transient suppressor and is not rated for continuous AC voltage or bipolar signal swing. Applying AC signals risks forward conduction during positive half-cycles and potential thermal failure. For AC line protection, bidirectional TVS diodes (e.g., SMBJ16CA) or dedicated AC-rated suppressors must be used instead.
SMF16AT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SOD-123F
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123FL
SMF16AT1G FAQ
1.How can I place an order for SMF16AT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF16AT1G 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 SMF16AT1G reliable?
The price and inventory of SMF16AT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF16AT1G is usually 5 days.
3.What payment methods are accepted for SMF16AT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF16AT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF16AT1G?
SMF16AT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF16AT1G 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 SMF16AT1G?
For technical support, including SMF16AT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF16AT1G requirements.
6.How does Aetrix verify that SMF16AT1G is sourced from the original manufacturer or authorized distributors?
All SMF16AT1G 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 SMF16AT1G meets industry standards.
7.What is the process for return or replacement of SMF16AT1G?
All SMF16AT1G units undergo pre-shipment inspection (PSI). If there is an issue with SMF16AT1G, 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 SMF16AT1G part is unused and in its original packaging.
Return procedure for SMF16AT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF16AT1G Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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