H21A3

H21A3 Datasheet

H21A1 / H21A2 / H21A3

Part	Datasheet
H21A3	H21A3 (pdf)

Related Parts	Information
H21A1	H21A1
H21A2	H21A2

PDF Datasheet Preview
H21A1 / H21A2 / H21A3 PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH PACKAGE DIMENSIONS Ø Ø Optical CL PIN 1 ANODE PIN 2 CATHODE PIN 3 COLLECTOR PIN 4 EMITTER Dimensions for all drawings are in inches mm . Tolerance of ± on all non-nominal dimensions unless otherwise specified. The H21A1, H21A2 and H21A3 consist of a gallium arsenide infrared emitting diode coupled with a silicon phototransistor in a plastic housing. The packaging system is designed to optimize the mechanical resolution, coupling efficiency, ambient light rejection, cost and reliability. The gap in the housing provides a means of interrupting the signal with an opaque material, switching the output from an “ON” to an “OFF” state. SCHEMATIC • Opaque housing • Low cost • apertures • High IC ON Derate power dissipation linearly mW/°C above 25°C. RMA flux is recommended. Methanol or isopropyl alcohols are recommended as cleaning agents. Soldering iron tip 1/16” 1.6mm minimum from housing. ABSOLUTE MAXIMUM RATINGS TA = 25°C unless otherwise specified Symbol TOPR TSTG TSOL-I TSOL-F VR PD VCEO VECO IC PD Rating -55 to +100 -55 to +100 240 for 5 sec 260 for 10 sec 6 100 20 150 Unit °C °C °C °C V mA mW 2001 Fairchild Semiconductor Corporation DS300290 5/02/01 1 OF 5 H21A1 / H21A2 / H21A3 PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH ELECTRICAL / OPTICAL CHARACTERISTICS TA =25°C All measurements made under pulse condition PARAMETER

PDF Datasheet Preview

H21A1 / H21A2 / H21A3

PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH

PACKAGE DIMENSIONS
Ø Ø

Optical CL

PIN 1 ANODE PIN 2 CATHODE PIN 3 COLLECTOR PIN 4 EMITTER

Dimensions for all drawings are in inches mm . Tolerance of ± on all non-nominal dimensions
unless otherwise specified.

The H21A1, H21A2 and H21A3 consist of a
gallium arsenide infrared emitting diode
coupled with a silicon phototransistor in a
plastic housing. The packaging system is
designed to optimize the mechanical
resolution, coupling efficiency, ambient light
rejection, cost and reliability. The gap in the
housing provides a means of interrupting the
signal with an opaque material, switching the
output from an “ON” to an “OFF” state.

SCHEMATIC
• Opaque housing
• Low cost
• apertures
• High IC ON

Derate power dissipation linearly mW/°C above 25°C. RMA flux is recommended. Methanol or isopropyl alcohols are recommended as cleaning
agents. Soldering iron tip 1/16” 1.6mm minimum from housing.

ABSOLUTE MAXIMUM RATINGS TA = 25°C unless otherwise specified

Symbol TOPR TSTG TSOL-I TSOL-F

VR PD

VCEO

VECO IC PD

Rating -55 to +100 -55 to +100 240 for 5 sec 260 for 10 sec
6 100
20 150

Unit °C °C °C °C

V mA mW
2001 Fairchild Semiconductor Corporation DS300290 5/02/01
1 OF 5

H21A1 / H21A2 / H21A3

PHOTOTRANSISTOR OPTICAL INTERRUPTER SWITCH

ELECTRICAL / OPTICAL CHARACTERISTICS TA =25°C All measurements made under pulse condition

PARAMETER

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived H21A3 Datasheet file may be downloaded here without warranties.

Datasheet ID: H21A3 633874