SMAJ54 データシートの表示（PDF） - Cystech Electonics Corp.

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SMAJ54

Surface Mount Transient Voltage Suppressors

Cystech Electonics Corp. 

CYStech Electronics Corp.

Spec. No. : C290SA

Issued Date : 2010.01.19

Revised Date : 2013.05.07

Page No. : 1/9

Surface Mount Transient Voltage Suppressors

Peak Pulse Power 400W Stand Off Voltage 5.0 to 440V

SMAJ5.0 thru SMAJ440CA

Features

• Low profile package with built-in strain relief for surface mounted

applications

• Plastic package has UL flammability classification 94V-0

• Ideal for ESD protection of data line in accordance with IEC1000-4-2

(IEC801-2)

• Ideal for EFT protection of data line in accordance with IEC1000-4-4

(IEC801-4)

• Very-fast response time

• Optimized for LAN protection applications

• Low incremental surge resistance, excellent clamping capability

• Glass passivated junction

• High temperature soldering guaranteed: 250°C/10seconds at terminals

• 400W peak pulse power capability with a 10/1000μs waveform,

repetition rate (duty cycle) : 0.01% (300W above 78V)

Outline

DO-214AC (SMA)

Mechanical Data

• Case : JEDEC DO-214AC(SMA) molded plastic body

• Terminals: Pure tin plated, solderable per MIL-STD-750 method 2026

• Polarity: For uni-directional types, the band denotes the cathode, which is positive with respective to the anode

under normal TVS operation

• Mounting position : Any

• Weight: 0.002 oz., 0.064 gram

Devices for bidirectional applications

For bi-directional devices, electrical characteristics apply in both directions.

Maximum Ratings and Characteristics(TA=25°C, unless otherwise noted)

Parameter

Symbol

Value

Peak pulse power dissipation with a 10/1000μs waveform (Fig. 1)

PPPM Minimum 400 (Note 1, 2)

Peak pulse current with a 10/1000μs waveform (Fig. 3)

Peak forward surge current, 8.3ms single half sine wave

uni-directional only (Note 2)

Typical thermal resistance, junction-to-case

IPPM

IFSM

RθJC

See next table (Note 1)

40

32

Typical thermal resistance, junction-to-ambient (Note 3)

Maximum instantaneous forward voltage at 25A for

unidirectional only (Note 4)

Operating junction and storage temperature range

RθJA

VF

TJ;TSTG

120

3.5 / 5.0

-55 ~ +150

Notes: 1.Non-repetitive current pulse, per Fig. 3 and derated above TA=25°C per Fig. 2.

2.Mounted on 0.2”×0.2” (5mm×5mm) copper pads to each terminal.

3.Mounted on minimum recommended pad layout.

4.VF<3.5V for devices of VBR<200V and VF<5V for devices of VBR>201V.

Rating is 300W above78V.

Unit

W

A

A

°C/W

°C/W

V

°C

SMAJ5.0 thru SMAJ440CA

CYStek Product Specification

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