1SMA8.5AT3G 1SMA8.5AT3G is a 400W unidirectional TVS diode from Littelfuse. It features 8.5V reverse standoff voltage, 14.4V clamping voltage, and 27.8A peak pulse current in an SMA package.
Mfr Part #:

1SMA8.5AT3G

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
1SMA8.5AT3G is a 400W unidirectional TVS diode from Littelfuse. It features 8.5V reverse standoff voltage, 14.4V clamping voltage, and 27.8A peak pulse current in an SMA package.
Total Stock: 30,000 pcs

1SMA8.5AT3G Available from 1 distributor

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1SMA8.5AT3G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Capacitance @ Frequency
Clamping Voltage
Current
Lead Spacing
Lead Style
Mounting Type
Operating Temperature
Package / Case
Peak Pulse Current (Ipp)
Peak Pulse Power
Power
Power Line Protection
Reverse Standoff Voltage (Vrwm)
Storage Temperature
Supplier Device Package
Tape & Reel
Type
Unidirectional Channels
Voltage

1SMA8.5AT3G Description

Short technical summary and product information.

1SMA8.5AT3G is a 400W unidirectional TVS diode manufactured by Littelfuse. It is designed to protect sensitive electronic circuits from voltage transients induced by lightning, ESD, and other surge events. The device features a reverse standoff voltage of 8.5V and a clamping voltage of 14.4V, ensuring that downstream components are shielded from overvoltage conditions.

 

With a peak pulse current rating of 27.8A, this TVS diode can handle significant surge energy. The junction capacitance is 1265pF at 1MHz, which should be considered for high-speed signal lines. The device is not intended for power line protection, as indicated by its general purpose application classification.

 

The 1SMA8.5AT3G is housed in a surface mount DO-214AC (SMA) package, which is suitable for automated assembly and space-constrained designs. It operates over a wide temperature range of -65°C to 150°C, making it robust for harsh environments. The part is RoHS and REACH compliant (unverified) and has an MSL rating of 1 (unlimited).

1SMA8.5AT3G Quick Information

Product Type: TVS Diode
Series: 1SMAxxA
Canonical Name: Littelfuse 1SMA8.5AT3G TVS Diode
Subcategory: Zener TVS Diode

1SMA8.5AT3G Compliance

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

1SMA8.5AT3G Features

  • Provides 400W peak pulse power dissipation.
  • Has 8.5V reverse standoff voltage.
  • Features 14.4V clamping voltage.
  • Handles 27.8A peak pulse current.
  • Comes in surface mount SMA package.

1SMA8.5AT3G Applications

  • Provides general purpose transient voltage suppression.
  • Used in overvoltage protection circuits.
  • Suitable for board-level ESD protection.
  • Ideal for clamping voltage spikes.
  • Protects I/O interfaces from surge events.

1SMA8.5AT3G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage of the 1SMA8.5AT3G?

The reverse standoff voltage is 8.5V.

What is the clamping voltage?

The clamping voltage is 14.4V.

What is the peak pulse current rating?

The peak pulse current is 27.8A.

What is the package type?

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

What is the peak pulse power rating?

The peak pulse power is 400W.

What is the capacitance of the device?

The capacitance is 1265pF at 1MHz.

What is the operating temperature range?

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

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