TCST2103 datasheet(3/6 Pages) SYC

3 / 6 page

TCST2103, TCST2202, TCST2300

Transmissive Optical Sensor with

Phototransistor Output

Note

(1) Tamb = 25 °C, unless otherwise specified

Fig. 2 - Test Circuit for ton and toff

Fig. 3 - Switching Times

BASIC CHARACTERISTICS (1)

PARAMETER

TEST CONDITION

PART

SYMBOL

MIN.

TYP.

MAX.

UNIT

COUPLER

Current transfer ratio

VCE = 5 V, IF = 20 mA

TCST2103

CTR

TCST2202

CTR

TCST2300

CTR

1.25

2.5

Collector current

VCE = 5 V, IF = 20 mA

TCST2103

TCST2202

TCST2300

0.25

0.5

Collector emitter saturation

voltage

IF = 20 mA, IC = 1 mA

TCST2103

VCEsat

0.4

IF = 20 mA, IC = 0.5 mA

TCST2202

VCEsat

0.4

IF = 20 mA, IC = 0.1 mA

TCST2300

VCEsat

0.4

Resolution, path of the shutter

crossing the radiant sensitive

zone

ICrel = 10 % to 90 %

TCST2103

0.6

TCST2202

0.4

TCST2300

0.2

INPUT (EMITTER)

Forward voltage

IF = 60 mA

1.25

1.6

Junction capacitance

VR = 0 V, f = 1 MHz

OUTPUT (DETECTOR)

Collector emitter voltage

IC = 1 mA

VCEO

Emitter collector voltage

IE = 10 µA

VECO

Collector dark current

VCE = 25 V, IF = 0 A, E = 0 lx

ICEO

100

SWITCHING CHARACTERISTICS

Turn-on time

IC = 2 mA, VS = 5 V,

RL = 100 Ω (see figure 2)

ton

µs

Turn-off time

IC = 2 mA, VS = 5 V,

RL = 100 Ω (see figure 2)

toff

8µs

Channel I

Channel II

20688

+ 5 V

adjusted by IF

R G = 50 Ω

tp = 1 ms

= 20

Oscilloscope

100

R L ≥ 1 MΩ

C L ≤ 20 pF

t p

10 %

90 %

100 %

t r

t d

t on

t s

t f

t off

I F

Pulse duration

Delay time

Rise time

ton (= td + tr)

Turn-on time

Storage time

t f

Fall time

off (= ts + tf)Turn-off time

96 11698

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