SMAJ300CA SMAJ300CA is a 400W bidirectional TVS diode from Littelfuse Inc. It features a reverse standoff voltage of 300V and clamping voltage of 486V, packaged in a DO-214AC (SMA) surface mount package.
Mfr Part #:

SMAJ300CA

Available from 2 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
SMAJ300CA is a 400W bidirectional TVS diode from Littelfuse Inc. It features a reverse standoff voltage of 300V and clamping voltage of 486V, packaged in a DO-214AC (SMA) surface mount package.
Total Stock: 6,158 pcs
$ Price Range: $0.16 - $0.91

SMAJ300CA Available from 2 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
6,000 pcs
6000 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16
Non-Authorised Inventory information
158 pcs
158 pcs On Request 1 On Request On Request On Request On Request On Request

SMAJ300CA Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Applications
Automotive Grade
Bidirectional Channels
Current
Halogen Free
Industrial Grade
Lead Style
Medical Grade
Military Grade
Mounting Type
Operating Temperature
Power
Power Line Protection
Reverse Standoff Voltage
Storage Temperature
Supplier Device Package
Tape & Reel
Technology
Type
Voltage

SMAJ300CA Description

Short technical summary and product information.

The SMAJ300CA is a bidirectional TVS diode from Littelfuse Inc., designed to protect sensitive electronic circuits from voltage transients. It offers a peak pulse power dissipation of 400W and features a reverse standoff voltage of 300V with a clamping voltage of 486V.

 

This device can handle peak pulse currents up to 800mA and is based on Zener technology. It is bidirectional, making it suitable for protecting against both positive and negative transient voltages. The SMAJ300CA is not intended for power line protection.

 

The diode is housed in a DO-214AC (SMA) surface mount package, enabling compact PCB designs. It operates over a wide temperature range from -65°C to 150°C.

 

Typical applications include general purpose protection of I/O interfaces, VCC bus, and other vulnerable circuits in telecom, computer, industrial, and consumer electronic devices.

SMAJ300CA Quick Information

Product Type: TVS Diode
Series: SMAJ
Canonical Name: SMAJ300CA
Subcategory: Bidirectional TVS Diode

SMAJ300CA Compliance

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

SMAJ300CA Estimated Pricing

Qty Low High
1+ $0.91 $0.91
10+ $0.56 $0.56
100+ $0.36 $0.36
500+ $0.28 $0.28
1,000+ $0.25 $0.25
2,000+ $0.23 $0.23
5,000+ $0.17 $0.17
10,000+ $0.16 $0.16

Estimated market price range - modelled values for guidance only, not live distributor offers.

SMAJ300CA Features

  • 400W peak pulse power dissipation.
  • 300V reverse standoff voltage.
  • 486V clamping voltage.
  • Bidirectional Zener TVS diode.
  • Surface mount DO-214AC package.

SMAJ300CA Applications

  • Protects I/O interfaces from voltage transients.
  • Safeguards VCC bus in electronic circuits.
  • Used in telecom and computer equipment.
  • Ideal for industrial and consumer electronics.

SMAJ300CA FAQs

7 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage of the SMAJ300CA?

The reverse standoff voltage is 300V.

What is the clamping voltage of the SMAJ300CA?

The clamping voltage is 486V.

What is the peak pulse current rating of the SMAJ300CA?

The peak pulse current is 800mA.

What is the package type of the SMAJ300CA?

The device is housed in a DO-214AC (SMA) surface mount package.

Is the SMAJ300CA unidirectional or bidirectional?

It is a bidirectional TVS diode.

What technology is used in the SMAJ300CA?

It uses Zener technology.

What is the operating temperature range of the SMAJ300CA?

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

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