SMAJ40A TVS Diode, 400W, 40V Standoff Voltage, 64.5V Clamping, Unidirectional, Surface Mount DO-214AC (SMA) package by Littelfuse Inc.
Mfr Part #:

SMAJ40A

Available from 3 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
TVS Diode, 400W, 40V Standoff Voltage, 64.5V Clamping, Unidirectional, Surface Mount DO-214AC (SMA) package by Littelfuse Inc.
Total Stock: 1,898 pcs
$ Price Range: $0.06 - $0.47

SMAJ40A Available from 3 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
1,754 pcs
$0.15
Qty Price
0+ 0.15
1754 pcs $0.15
QtyPrice
0+ 0.15
1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
109 pcs
109 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
35 pcs
35 pcs On Request 1 On Request On Request On Request On Request On Request

SMAJ40A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Applications
Automotive Grade
Breakdown Voltage
Current
Halogen Free
Industrial Grade
Maximum Instantaneous Forward Voltage
Medical Grade
Military Grade
Mounting Type
Operating Junction Temperature
Operating Temperature
Peak Forward Surge Current
Peak Pulse Power Dissipation
Power
Power Line Protection
Prop 65
SVHC Present
Standoff Voltage
Steady State Power Dissipation
Storage Temperature
Storage Temperature Range
Supplier Device Package
Tape & Reel
Type
Unidirectional Channels
Voltage

SMAJ40A Description

Short technical summary and product information.

The SMAJ40A is a 400W Transient Voltage Suppressor (TVS) diode from Littelfuse Inc., designed for surge and ESD protection in portable communications, computing, and video equipment. It features a standoff voltage of 40V and a maximum clamping voltage of 64.5V.

 

This unidirectional device is housed in a compact, surface mount DO-214AC (SMA) package, making it suitable for automated assembly. Key electrical characteristics include a peak pulse power dissipation of 400W (10/1000 µs waveform), a peak pulse current of 6.2A, and a peak forward surge current of 40A (8.3 ms).

 

The SMAJ40A operates over a junction temperature range of -55°C to +150°C and is RoHS compliant. It provides reliable circuit protection against voltage transients in a wide range of general-purpose applications.

SMAJ40A Quick Information

Product Type: TVS Diode
Series: SMAJ
Canonical Name: TVS Diode, Unidirectional, 40V Standoff, 400W, DO-214AC (SMA)
Subcategory: Unidirectional TVS Diode

SMAJ40A Compliance

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

SMAJ40A Estimated Pricing

Qty Low High
1+ $0.47 $0.47
10+ $0.29 $0.29
100+ $0.18 $0.18
500+ $0.14 $0.14
1,000+ $0.12 $0.12
2,000+ $0.11 $0.11
5,000+ $0.08 $0.08
10,000+ $0.07 $0.07
15,000+ $0.07 $0.07
25,000+ $0.06 $0.06
35,000+ $0.06 $0.06

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

SMAJ40A Features

  • 400W peak pulse power dissipation.
  • 40V standoff voltage rating.
  • Surface mount DO-214AC (SMA) package.
  • Unidirectional TVS protection diode.
  • RoHS compliant and lead-free.

SMAJ40A Applications

  • Surge protection in portable electronics.
  • ESD protection for I/O interfaces.
  • Overvoltage protection in power lines.
  • Circuit protection in computing equipment.

SMAJ40A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the standoff voltage of the SMAJ40A?

The standoff voltage (working peak reverse voltage) is 40 V.

What is the breakdown voltage of the SMAJ40A?

The nominal breakdown voltage is 44.4 V.

What is the maximum clamping voltage of the SMAJ40A?

The maximum clamping voltage is 64.5 V.

What is the peak pulse current rating of the SMAJ40A?

The maximum peak pulse current is 6.2 A for a 10/1000 µs waveform.

What package is the SMAJ40A available in?

The SMAJ40A is available in a surface mount DO-214AC (SMA) package.

Is the SMAJ40A a unidirectional or bidirectional TVS diode?

The SMAJ40A is a unidirectional TVS diode, featuring 1 unidirectional channel.

What is the operating temperature range for the SMAJ40A?

The operating junction temperature range is -55°C to +150°C.

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