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onsemi SMF60AT1G
- Part No.:
- SMF60AT1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SOD-123F
- Datasheet:
-
SMF60AT1G.pdf
- Description:
- TVS DIODE 60VWM 96.8VC SOD123FL
- Quantity:
- Payment:
- Shipping:
Inventory:4,230
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Product details
Overview
SMF60AT1G from onsemi is a unidirectional Zener transient voltage suppressor (TVS) diode in SOD-123FL package, designed for overvoltage protection of sensitive electronics. It features a 60 V working peak reverse voltage (VRWM), 73.7 V maximum clamping voltage (VC) at 96.8 A peak pulse current (IPP), and <1 ns response time. It delivers 175 W peak pulse power (10/1000 µs) and meets IEC61000-4-2 Level 4 (±16 kV HBM) and IEC61000-4-4 (40 A) ESD standards - ideal for protecting DC power rails in industrial power supplies and telecom interfaces.
For engineers reviewing the SMF60AT1G datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM matching system operating voltage, VC margin relative to IC absolute maximum ratings, surge current capability under real-world transients, and SOD-123FL footprint compatibility with space-constrained PCB layouts.
Technical Context
The SMF60AT1G operates as a unidirectional avalanche breakdown device, triggered when reverse voltage exceeds its 66.7–73.7 V breakdown range (VBR @ IT = 1 mA). Its low zener impedance and fast sub-nanosecond response enable effective suppression of ESD, lightning-induced surges, and inductive switching transients before downstream components experience overstress.
It is rated for 175 W peak pulse power per 10/1000 µs waveform at TA = 25°C, with thermal resistance RJA = 325 °C/W (FR-4 board, minimum pad) and RJcathode = 26 °C/W, supporting reliable operation across –55 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 60 V - must be ≥ continuous DC operating voltage to avoid leakage during normal operation |
| VBR (min/typ/max) | 66.7 / 70.2 / 73.7 V @ 1 mA - defines precise breakdown onset and tolerance band for design margining |
| VC @ IPP | ≤73.7 V @ 96.8 A - maximum voltage seen by protected circuit during worst-case 10/1000 µs surge |
| IPP | 96.8 A - peak surge current the device safely clamps without failure |
| Response Time | <1 ns - ensures clamping activation before transient energy damages downstream ICs |
| ESD Rating | ±16 kV HBM (Class 3), IEC61000-4-2 Level 4 - qualifies for high-reliability end-equipment certification |
| Package | SOD-123FL - 2.7 × 1.6 mm footprint, 1.0 mm max height, Pb-free matte tin finish |
Pinout & Package
SOD-123FL surface-mount package with cathode indicated by polarity band; low-profile (max height 1.0 mm), small footprint (8.45 mm²), and MSL 1 reflow compatible (260°C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to protected line (e.g., VBUS); clamping occurs when voltage exceeds VRWM |
| 2 (Non-banded End) | Anode | Connected to ground reference; forms low-impedance path for surge current to GND |
Key Features
| Feature | Design Value |
|---|---|
| Low Clamping Ratio | VC/VRWM = 1.23 - tight ratio minimizes overvoltage stress on protected ICs |
| High Surge Robustness | 175 W peak power (10/1000 µs) - withstands repeated industrial-grade transients |
| Ultra-Fast Response | <1 ns turn-on - activates before most microsecond-scale transients propagate |
| Pb-Free & RoHS Compliant | 100% matte Sn lead finish - supports lead-free assembly and environmental compliance |
| ESD Hardened | IEC61000-4-2 Level 4 (±16 kV) - eliminates need for additional ESD stages in USB/RS-485 ports |
Applications
| Industrial Power Supply Protection | Telecom Interface Protection |
|---|---|
Use Scenario: Protecting 48 V DC input rails in DIN-rail mounted PLC power modules against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between VIN and GND, clamping transients before they reach DC-DC controller ICs. Use Value: Limits rail voltage to ≤73.7 V during 96.8 A surges, preventing latch-up or gate oxide damage in downstream MOSFET drivers and controllers. | Use Scenario: Safeguarding RS-485 transceiver pins (A/B) in outdoor base station backhaul equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Line-side TVS on differential bus lines, referenced to local signal ground. Use Value: Sub-1 ns response ensures clamping before transient couples into transceiver's internal ESD structures, preserving data integrity and device lifetime. |
| Automotive Body Control Module (BCM) | Consumer AC-DC Adapter Output |
Use Scenario: Protecting 12 V supply inputs to BCM microcontrollers and CAN transceivers from battery line transients (ISO 7637-2 Pulse 1/2a/5a). IC Role / Device Role / Timing Role: Primary overvoltage clamp on main VBAT feed, positioned upstream of LDO regulators. Use Value: Withstands 175 W surges while maintaining VRWM ≥ system nominal voltage, eliminating need for higher-cost automotive-grade alternatives. | Use Scenario: Secondary-side overvoltage protection on 5–24 V DC outputs of universal wall adapters used in smart home hubs and IoT gateways. IC Role / Device Role / Timing Role: Final-stage TVS on regulated output, guarding against regulator failure or feedback loop loss. Use Value: Small SOD-123FL footprint enables placement directly at connector, minimizing trace inductance and ensuring effective clamping at point-of-use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ60A | Same VRWM (60 V), but SMA package (4.5 × 2.7 mm) - 2.7× larger footprint, 400 W peak power | Better suited for higher-energy surges where board space allows; less optimal for ultra-compact designs | Select SMAJ60A only if surge energy exceeds 175 W and layout permits larger package |
| P6SMB60A | 60 V VRWM, DO-214AA package (4.5 × 3.3 mm), 600 W peak power, higher VC (96.8 V) | Higher clamping voltage reduces protection margin; used where cost-per-watt is prioritized over voltage headroom | Choose P6SMB60A for cost-sensitive, non-critical rails where VC ≤96.8 V remains within downstream IC limits |
Compared with SMAJ60A and P6SMB60A, the SMF60AT1G provides optimal balance of compact size, low clamping voltage (73.7 V), and certified 175 W surge handling - making it preferred for space-constrained, high-reliability 48–60 V systems where voltage margin is critical.
Availability
SMF60AT1G is available at Aetrix Electronics and suitable for industrial power supplies, telecom interface protection, automotive body control modules, and consumer AC-DC adapter output circuits requiring stable component supply and long-term obsolescence management.
Supply support for SMF60AT1G 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, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The SMF60AT1G belongs to onsemi's SMF5.0AT1 Series of unidirectional TVS diodes, engineered specifically for robust, low-profile overvoltage protection in space-constrained, high-reliability DC power and signal line applications.
FAQ
What is the working peak reverse voltage (VRWM) of the SMF60AT1G?
The SMF60AT1G has a working peak reverse voltage (VRWM) of 60 V. This value represents the maximum continuous DC or peak repetitive reverse voltage the device can withstand without entering breakdown. It is selected to match or slightly exceed the nominal operating voltage of the protected circuit - for example, 48 V or 60 V power rails - ensuring minimal leakage during normal operation while enabling reliable clamping during transients.
What is the maximum clamping voltage (VC) of the SMF60AT1G and under what test condition?
The SMF60AT1G has a maximum clamping voltage (VC) of 73.7 V, measured at its peak pulse current (IPP) of 96.8 A using the standard 10/1000 µs double-exponential surge waveform. This VC value defines the highest voltage that will appear across the protected line during a worst-case transient, directly determining whether downstream components remain within their absolute maximum voltage ratings.
Is the SMF60AT1G RoHS compliant and what is its lead finish?
Yes, the SMF60AT1G is RoHS compliant and features a Pb-free construction. Its lead finish is 100% matte tin (Sn), qualified for lead-free reflow soldering up to 260°C peak temperature and meeting MSL 1 moisture sensitivity level requirements - ensuring compatibility with modern automated assembly processes and environmental regulations.
How does the SMF60AT1G compare to the SMAJ60A in terms of package and surge capability?
The SMF60AT1G uses the compact SOD-123FL package (2.7 × 1.6 mm), whereas the SMAJ60A uses the larger SMA package (4.5 × 2.7 mm). While both share 60 V VRWM, the SMAJ60A offers higher peak pulse power (400 W vs. 175 W for SMF60AT1G), making it suitable for higher-energy transients - but at the cost of PCB area. The SMF60AT1G's smaller size and lower VC (73.7 V vs. ~100 V for SMAJ60A) make it preferable for dense, voltage-sensitive designs.
What ESD and surge immunity standards does the SMF60AT1G meet?
The SMF60AT1G meets IEC61000-4-2 Level 4 for electrostatic discharge (±16 kV contact, ±15 kV air) and IEC61000-4-4 for electrical fast transients (40 A, 5/50 ns). These certifications confirm its suitability for end-equipment requiring robust immunity to human-body-model ESD events and repetitive burst noise - such as industrial controllers, telecom interfaces, and consumer power adapters where field reliability is critical.
SMF60AT1G 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):
- 60V
- Voltage - Breakdown (Min):
- 66.7V
- Voltage - Clamping (Max) @ Ipp:
- 96.8V
- Current - Peak Pulse (10/1000µs):
- 1.8A
- 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
SMF60AT1G FAQ
1.How can I place an order for SMF60AT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF60AT1G 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 SMF60AT1G reliable?
The price and inventory of SMF60AT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF60AT1G is usually 5 days.
3.What payment methods are accepted for SMF60AT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF60AT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF60AT1G?
SMF60AT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF60AT1G 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 SMF60AT1G?
For technical support, including SMF60AT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF60AT1G requirements.
6.How does Aetrix verify that SMF60AT1G is sourced from the original manufacturer or authorized distributors?
All SMF60AT1G 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 SMF60AT1G meets industry standards.
7.What is the process for return or replacement of SMF60AT1G?
All SMF60AT1G units undergo pre-shipment inspection (PSI). If there is an issue with SMF60AT1G, 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 SMF60AT1G part is unused and in its original packaging.
Return procedure for SMF60AT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF60AT1G Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
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