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onsemi 1SMA60CAT3G
- Part No.:
- 1SMA60CAT3G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
1SMA60CAT3G.pdf
- Description:
- TVS DIODE 60VWM 96.8VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:62,197
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Product details
Overview
1SMA60CAT3G from ON Semiconductor is a bidirectional 400 W peak power Zener transient voltage suppressor (TVS) designed for clamping high-energy transients in DC power rails and signal lines. It features a 60 V working peak reverse voltage (VRWM), 96.8 V clamping voltage (VC) at 4.1 A peak pulse current, and <1 ns response time. It is used in automotive power supply protection and industrial control I/O interfaces.
For engineers reviewing the 1SMA60CAT3G datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM ≥ system operating voltage, VC margin relative to protected IC absolute maximum ratings, surge current capability under 10/1000 µs waveform, and junction capacitance (110 pF at 0 V) for high-speed signal line compatibility.
Technical Context
The 1SMA60CAT3G operates as a bidirectional avalanche diode, symmetrically clamping both positive and negative transients above its breakdown voltage range (66.7–73.72 V). Its low zener impedance and fast sub-nanosecond response enable effective suppression of ESD (Class 3 >16 kV HBM) and lightning-induced surges.
It is rated for 400 W non-repetitive peak power at 1 ms pulse width (10/1000 µs waveform), with thermal derating to 50% power at 150°C ambient. The device uses ON Semiconductor's SURMETIC® SMA package (Case 403D), optimized for surface-mount reliability and board-level mounting flexibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 60 V - Minimum reverse standoff voltage before clamping begins; must exceed circuit's max continuous operating voltage. |
| VBR (min/typ/max) | 66.7 / 70.21 / 73.72 V - Measured at 1 mA test current; defines actual avalanche onset window. |
| VC @ IPP | 96.8 V @ 4.1 A - Maximum clamped voltage during 10/1000 µs surge; determines stress on downstream components. |
| IPP | 4.1 A - Peak pulse current supported at rated clamping voltage; correlates to 400 W surge energy handling. |
| CJ (0 V) | 110 pF - Junction capacitance at zero bias; critical for preserving signal integrity on data lines ≤10 Mbps. |
| Response Time | <1 ns - Time from transient onset to clamping activation; ensures protection before sensitive ICs experience overvoltage. |
Pinout & Package
SMA package (Case 403D), surface-mount, bidirectional configuration with cathode polarity notch (non-functional for polarity indication). Dimensions: 4.06–4.57 mm length × 2.29–2.92 mm width × 1.97–2.20 mm height. Mounting position: any orientation; compatible with top-slide or bottom-board placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Connects to protected line; conducts during negative transients and serves as reference node during positive clamping. |
| Cathode | Transient return path (bidirectional) | Connects to protected line; conducts during positive transients and serves as reference node during negative clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints. |
| 400 W peak power rating | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity in properly designed PCB layouts. |
| ESD Class 3 (>16 kV HBM) | Meets stringent electrostatic discharge immunity requirements for automotive and industrial touch interfaces. |
| Low-profile SURMETIC® package | Reduces board space and improves thermal coupling to copper pour for enhanced power dissipation. |
Applications
| Automotive Power Rail Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting 12 V battery-supplied ECUs against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between power rail and ground, activated within <1 ns of transient onset. Use Value: Limits rail voltage to ≤96.8 V during 400 W surges, preventing damage to 36 V-rated regulators and microcontrollers. | Use Scenario: Safeguarding 24 V digital input modules from field-wiring induced surges and inductive kickback. IC Role / Device Role / Timing Role: Bidirectional TVS connected across input terminals to shunt both positive and negative transients to common ground. Use Value: Maintains signal integrity by clamping transients before they reach optocoupler inputs, ensuring reliable state detection. |
| Medical Equipment Signal Line Protection | Telecom Interface Surge Suppression |
Use Scenario: Shielding isolated RS-485 transceivers in patient-monitoring devices from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (110 pF) bidirectional clamp placed differential across A/B bus lines. Use Value: Preserves signal rise/fall times while limiting common-mode transients to safe levels below transceiver absolute max ratings. | Use Scenario: Front-end protection of Ethernet PHYs and DSL line drivers exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage clamping device in multi-stage protection architecture, absorbing bulk surge energy before secondary TVS or GDT stages. Use Value: Handles up to 4.1 A peak current per line, reducing stress on downstream precision protection components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SZ1SMA60CAT3G | AEC-Q101 qualified; identical electrical specs but with automotive-specific traceability and PPAP support. | Required for automotive OEM designs requiring qualification documentation and change control. | Select SZ1SMA60CAT3G when automotive compliance (AEC-Q101, PPAP) is mandatory; otherwise 1SMA60CAT3G suffices for industrial use. |
| 1.5SMC60CA | Higher 1500 W peak power rating; larger SMC package (7.11 × 6.22 mm); 100 pF capacitance. | Better suited for higher-energy surges where board space allows larger footprint. | Choose 1.5SMC60CA only if surge energy exceeds 400 W capability and SMC package is acceptable in layout. |
Compared with SZ1SMA60CAT3G, the 1SMA60CAT3G lacks automotive qualification documentation but matches all electrical performance; versus 1.5SMC60CA, it trades lower surge capacity for 45% smaller board area and comparable capacitance-ideal for space-constrained industrial controls.
Availability
1SMA60CAT3G is available at Aetrix Electronics and suitable for automotive power rail protection, industrial PLC digital I/O protection, and medical equipment signal line protection requiring stable component supply and long-term manufacturing continuity.
Supply support for 1SMA60CAT3G 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
ON Semiconductor is a global semiconductor manufacturer specializing in power management, analog, sensor, and discrete solutions for automotive, industrial, and communications markets.
The 1SMA60CAT3G belongs to the SMA-series Zener TVS family, engineered specifically for cost-sensitive, high-reliability transient suppression in DC power and medium-speed signal paths across automotive and industrial systems.
FAQ
What is the working peak reverse voltage (VRWM) of the 1SMA60CAT3G?
The 1SMA60CAT3G has a working peak reverse voltage (VRWM) of 60 V. This is the maximum continuous DC or peak operating voltage the device can withstand without entering breakdown. It ensures the 1SMA60CAT3G remains non-conductive during normal operation while activating only during overvoltage transients exceeding this threshold.
What clamping voltage does the 1SMA60CAT3G achieve under surge conditions?
The 1SMA60CAT3G achieves a maximum clamping voltage (VC) of 96.8 V at a peak pulse current (IPP) of 4.1 A, tested with the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuits during surge events and is critical for ensuring downstream components remain within their absolute maximum voltage ratings.
Is the 1SMA60CAT3G unidirectional or bidirectional?
The 1SMA60CAT3G is a bidirectional transient voltage suppressor. Its symmetrical Zener structure allows it to clamp both positive and negative voltage transients equally, making it suitable for protecting AC-coupled lines, floating interfaces, and differential buses without polarity concerns.
What is the junction capacitance of the 1SMA60CAT3G and why does it matter?
The 1SMA60CAT3G exhibits a typical junction capacitance (CJ) of 110 pF at 0 V bias. This parameter directly affects high-frequency signal integrity: lower capacitance minimizes loading and distortion on data lines. At 110 pF, the 1SMA60CAT3G is appropriate for RS-485, CAN, and other medium-speed interfaces up to ~10 Mbps, but not recommended for USB 2.0 or HDMI.
Does the 1SMA60CAT3G meet automotive qualification standards?
The 1SMA60CAT3G itself is not AEC-Q101 qualified; however, its automotive-grade variant SZ1SMA60CAT3G is fully AEC-Q101 qualified and PPAP capable. For non-automotive industrial or medical applications, the 1SMA60CAT3G provides identical electrical performance with standard commercial qualification and Pb-free construction.
1SMA60CAT3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-214AC, SMA
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 60V
- Voltage - Breakdown (Min):
- 66.7V
- Voltage - Clamping (Max) @ Ipp:
- 96.8V
- Current - Peak Pulse (10/1000µs):
- 4.1A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 110pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
1SMA60CAT3G FAQ
1.How can I place an order for 1SMA60CAT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1SMA60CAT3G 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 1SMA60CAT3G reliable?
The price and inventory of 1SMA60CAT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1SMA60CAT3G is usually 5 days.
3.What payment methods are accepted for 1SMA60CAT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1SMA60CAT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1SMA60CAT3G?
1SMA60CAT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1SMA60CAT3G 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 1SMA60CAT3G?
For technical support, including 1SMA60CAT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1SMA60CAT3G requirements.
6.How does Aetrix verify that 1SMA60CAT3G is sourced from the original manufacturer or authorized distributors?
All 1SMA60CAT3G 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 1SMA60CAT3G meets industry standards.
7.What is the process for return or replacement of 1SMA60CAT3G?
All 1SMA60CAT3G units undergo pre-shipment inspection (PSI). If there is an issue with 1SMA60CAT3G, 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 1SMA60CAT3G part is unused and in its original packaging.
Return procedure for 1SMA60CAT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1SMA60CAT3G Tags
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