AC08FSM datasheet(64/223 Pages) TECCOR

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Sensitive SCRs

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Figure E5.17 Power Dissipation (Typical) versus RMS On-state Current

Figure E5.18 Normalized DC Latching Current versus Case Temperature

Figure E5.19 Simple Test Circuit for Gate Trigger Voltage and

Current Measurement

Note: V1 — 0 V to 10 V dc meter

VGT — 0 V to 1 V dc meter

IG — 0 mA to 1 mA dc milliammeter

R1 — 1 k potentiometer

To measure gate trigger voltage and current, raise gate voltage

(VGT) until meter reading V1 drops from 6 V to 1 V. Gate trigger

voltage is the reading on VGT just prior to V1 dropping. Gate trig-

ger current IGT can be computed from the relationship

where IG is reading (in amperes) on meter just prior to V1 drop-

ping.

Note: IGT may turn out to be a negative quantity (trigger current

flows out from gate lead).

02468

RMS On-state Current [IT(RMS)] – Amps

CURRENT WAVEFORM: Half Sine Wave

LOAD: Resistive or Inductive

CONDUCTION ANGLE: 180˚

6 A to 10 A

TO-220, TO-202,

TO-251, and TO-252

-65

-15

+25

+65

+110 +125

-40

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

Case Temperature (TC) – ˚C

See General Notes for specific device

operating temperature range.

6 V

–

100

D.U.T.

Reset

Normally-closed

Pushbutton

1 k

(1%)

100

IN4001

IGT

VGT

1000

------------- Amps

–

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