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1SMA51AT3G 1SMA51AT3G is a 51V working peak reverse voltage, 400W peak power unidirectional TVS diode in an SMA surface-mount package. It provides fast (<1 ns) transient voltage suppression for general-purpose applications.
Mfr Part #:

1SMA51AT3G

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
1SMA51AT3G is a 51V working peak reverse voltage, 400W peak power unidirectional TVS diode in an SMA surface-mount package. It provides fast (<1 ns) transient voltage suppression for general-purpose applications.
Total Stock: 30,000 pcs

1SMA51AT3G Available from 1 distributor

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1SMA51AT3G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Capacitance
Capacitance @ Frequency
Clamping Voltage
DC Power Dissipation
ESD Rating
Forward Surge Current
Lead Spacing
Lead Style
Maximum Soldering Temperature
Medical Grade
Mounting Position
Mounting Type
Operating Temperature
Operating Temperature Range
Package / Case
Packaging Type
Peak Power Dissipation
Polarity
Power
Power Line Protection
Response Time
Standard Package Quantity
Storage Temperature
Supplier Device Package
Tape & Reel
Thermal Resistance Junction-to-Ambient
Thermal Resistance, Junction to Lead
Type
Unidirectional Channels
Voltage
Working Peak Reverse Voltage

1SMA51AT3G Description

Short technical summary and product information.

The 1SMA51AT3G from ON Semiconductor is a unidirectional transient voltage suppressor (TVS) diode from the 1SMA5.0AT3 series. It is designed to protect voltage-sensitive components from high-voltage, high-energy transients. The device offers a working peak reverse voltage of 51 V and a clamping voltage of 82.4 V.

 

Key electrical specifications include a peak power dissipation of 400 W at 1 ms pulse width, a typical response time of less than 1 ns, and an ESD rating of Class 3 (>16 kV) per Human Body Model. The diode has a capacitance of 250 pF at 1 MHz and can handle a forward surge current of 40 A.

 

The device is housed in a void-free, transfer-molded plastic SMA (DO-214AC) package, suitable for surface mount assembly. It supports operating junction temperatures from -65°C to 150°C and has a moisture sensitivity level of 1 (unlimited). This Pb-free variant (suffix G) is RoHS and REACH compliant.

1SMA51AT3G Quick Information

Product Type: TVS Diode
Series: Surmetic
Canonical Name: 1SMA51AT3G – 51V Working Peak Reverse Voltage, 400W Peak Power, Unidirectional TVS Diode, SMA Package
Subcategory: Unidirectional TVS Diode

1SMA51AT3G Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Yes

1SMA51AT3G Features

  • 51V working peak reverse voltage.
  • 400W peak power dissipation at 1ms.
  • Fast transient response less than 1ns.
  • ESD rated Class 3 above 16kV HBM.
  • Surface mount SMA (DO-214AC) package.

1SMA51AT3G Applications

  • General purpose transient voltage suppression.
  • Protection in communication systems circuits.
  • Used in automotive electronic modules.
  • Suitable for industrial control equipment.

1SMA51AT3G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the working peak reverse voltage of the 1SMA51AT3G?

The working peak reverse voltage is 51 V.

What is the clamping voltage of the 1SMA51AT3G?

The clamping voltage is 82.4 V.

What is the peak power dissipation rating?

The peak power dissipation is 400 W at a 1 ms pulse width.

What package type is the 1SMA51AT3G available in?

The device is available in an SMA (DO-214AC) surface-mount package.

Is the 1SMA51AT3G unidirectional or bidirectional?

It is a unidirectional TVS diode. Polarity is indicated by a cathode notch or band.

What is the operating temperature range?

The operating junction temperature range is -65°C to 150°C.

What is the typical response time of this TVS diode?

The typical response time is less than 1 ns.

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