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H21B2, H21B3, H21B4

H21B2, H21B3, H21B4 Selling Leads, Datasheet

MFG:Fairchild Semiconductor  Category:Sensors, Sensor Evaluation Kits  Package Cooled:N/A  D/C:09+

H21B2, H21B3, H21B4 Picture

H21B2, H21B3, H21B4 Datasheet download

Five Points

Part Number: H21B2

Category: Sensors, Sensor Evaluation Kits

MFG: Fairchild Semiconductor

Package Cooled: N/A

D/C: 09+

Description: SWITCH INTERRUPT DARL-OUT 7.5MA

Price Break

1000

Unit Price

.45360

Extended Price

453.60

(All prices are in USD) Prices for reference only
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H21B2 Suppliers

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  • H2100

  • Vendor: Harris Qty: 600 Note: original,in stock"  Adddate: 2026-04-20
  • Inquire Now
  • AMASS ELETRONICS LIMITED   China
    Contact: Ms.tinahou   MSN:tinaaec@hotmail.com
    Tel: 86-755-82265120
    Fax: 86-755-82265220
    (0)

  • H2100IB

  • Vendor: Harris Pack: SOP D/C: 10+& Qty: 500 Note: new and original  Adddate: 2026-04-20
  • Inquire Now
  •   China
    Contact: Mr.zhang   MSN:hengfudz@hotmail.com
    Tel: 086-0754-84483064
    Fax: 086-0754-84473229
    (13)

  • H21LOI

  • Vendor: Fairchild D/C: 06+& Qty: 1,000 Note: 04 OEM STK  Adddate: 2026-04-20
  • Inquire Now
  • ALCON TECHNOLOGY CO., LTD.   China
    Contact: Mr.simonzhu  
    Tel: 86-755-83803182
    Fax: --
    (0)

About H21B2

PDF/DataSheet Download

Datasheet: H21B2

File Size: 386395 KB

Manufacturer: FAIRCHILD [Fairchild Semiconductor]

Download : Click here to Download

Related PDF Download

  • H21A

    File Size: 106716 KB

  • H21A1

    File Size: 106716 KB

  • H21A2

    File Size: 106716 KB

  • H21A3

    File Size: 106716 KB

  • H21A4

    File Size: 103534 KB

Related Part Number

H21B3 Suppliers

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  • H2100

  • Vendor: Harris Qty: 600 Note: original,in stock"  Adddate: 2026-04-20
  • Inquire Now
  • AMASS ELETRONICS LIMITED   China
    Contact: Ms.tinahou   MSN:tinaaec@hotmail.com
    Tel: 86-755-82265120
    Fax: 86-755-82265220
    (0)

  • H2100IB

  • Vendor: Harris Pack: SOP D/C: 10+& Qty: 500 Note: new and original  Adddate: 2026-04-20
  • Inquire Now
  •   China
    Contact: Mr.zhang   MSN:hengfudz@hotmail.com
    Tel: 086-0754-84483064
    Fax: 086-0754-84473229
    (13)

  • H21LOI

  • Vendor: Fairchild D/C: 06+& Qty: 1,000 Note: 04 OEM STK  Adddate: 2026-04-20
  • Inquire Now
  • ALCON TECHNOLOGY CO., LTD.   China
    Contact: Mr.simonzhu  
    Tel: 86-755-83803182
    Fax: --
    (0)

About H21B3

PDF/DataSheet Download

Datasheet: H21B3

File Size: 386395 KB

Manufacturer: FAIRCHILD [Fairchild Semiconductor]

Download : Click here to Download

Related PDF Download

  • H21A

    File Size: 106716 KB

  • H21A1

    File Size: 106716 KB

  • H21A2

    File Size: 106716 KB

  • H21A3

    File Size: 106716 KB

  • H21A4

    File Size: 103534 KB

Related Part Number

H21B4 Suppliers

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  • H2100

  • Vendor: Harris Qty: 600 Note: original,in stock"  Adddate: 2026-04-20
  • Inquire Now
  • AMASS ELETRONICS LIMITED   China
    Contact: Ms.tinahou   MSN:tinaaec@hotmail.com
    Tel: 86-755-82265120
    Fax: 86-755-82265220
    (0)

  • H2100IB

  • Vendor: Harris Pack: SOP D/C: 10+& Qty: 500 Note: new and original  Adddate: 2026-04-20
  • Inquire Now
  •   China
    Contact: Mr.zhang   MSN:hengfudz@hotmail.com
    Tel: 086-0754-84483064
    Fax: 086-0754-84473229
    (13)

  • H21LOI

  • Vendor: Fairchild D/C: 06+& Qty: 1,000 Note: 04 OEM STK  Adddate: 2026-04-20
  • Inquire Now
  • ALCON TECHNOLOGY CO., LTD.   China
    Contact: Mr.simonzhu  
    Tel: 86-755-83803182
    Fax: --
    (0)

About H21B4

PDF/DataSheet Download

Datasheet: H21B4

File Size: 382414 KB

Manufacturer: FAIRCHILD [Fairchild Semiconductor]

Download : Click here to Download

Related PDF Download

  • H21A

    File Size: 106716 KB

  • H21A1

    File Size: 106716 KB

  • H21A2

    File Size: 106716 KB

  • H21A3

    File Size: 106716 KB

  • H21A4

    File Size: 103534 KB

Related Part Number

H21B2 Parameters

Technical/Catalog InformationH21B2
VendorFairchild Optoelectronics Group
CategorySensors, Transducers
Sensing Distance0.119" (3mm)
Sensing MethodTransmissive
Package / CasePCB Mount
Output TypePhoto Darlington
Lead Free StatusLead Free
RoHS StatusRoHS Compliant
Other Names H21B2
H21B2

H21B2 General Description

The H21B1, H21B2 and H21B3 consist of a gallium arsenide infrared emitting diode coupled with a silicon photodarlington 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

H21B2 Maximum Ratings

Parameter
Symbol
Rating
Unit
Operating Temperature
T OPR
-55 to +100
°C
Storage Temperature
T STG
-55 to +100
°C
Soldering Temperature (Iron) (2,3 and 4)
T SOL-I
240 for 5 sec
°C
Soldering Temperature (Flow) (2 and 3)
T SOL-F
260 for 10 sec
°C
INPUT (EMITTER)
Continuous Forward Current
IF
50
mA
Reverse Voltage
VR
6
V
Power Dissipation (1)
PD
100
mW
OUTPUT (SENSOR)
Collector to Emitter Voltage
V CEO
30
V
Emitter to Collector Voltage
V ECO
6
V
Collector Current
IC
40
mA
Power Dissipation (TC = 25°C) (1)
PD
150
mW
1. Derate power dissipation linearly 1.67 mW/°C above 25°C.
2. RMA flux is recommended.
3. Methanol or isopropyl alcohols are recommended as cleaning agents.
4. Soldering iron tip 1/16" (1.6mm) minimum from housing.

H21B2 Features

• Opaque housing
• Low cost
• .035" apertures
• High I C(ON)

H21B3 Parameters

Technical/Catalog InformationH21B3
VendorFairchild Optoelectronics Group
CategorySensors, Transducers
Sensing Distance0.119" (3mm)
Sensing MethodTransmissive
Package / CasePCB Mount
Output TypePhoto Darlington
Lead Free StatusLead Free
RoHS StatusRoHS Compliant
Other Names H21B3
H21B3

H21B3 General Description

The H21B1, H21B2 and H21B3 consist of a gallium arsenide infrared emitting diode coupled with a silicon photodarlington 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

H21B3 Maximum Ratings

Parameter
Symbol
Rating
Unit
Operating Temperature
T OPR
-55 to +100
°C
Storage Temperature
T STG
-55 to +100
°C
Soldering Temperature (Iron) (2,3 and 4)
T SOL-I
240 for 5 sec
°C
Soldering Temperature (Flow) (2 and 3)
T SOL-F
260 for 10 sec
°C
INPUT (EMITTER)
Continuous Forward Current
IF
50
mA
Reverse Voltage
VR
6
V
Power Dissipation (1)
PD
100
mW
OUTPUT (SENSOR)
Collector to Emitter Voltage
V CEO
30
V
Emitter to Collector Voltage
V ECO
6
V
Collector Current
IC
40
mA
Power Dissipation (TC = 25°C) (1)
PD
150
mW
1. Derate power dissipation linearly 1.67 mW/°C above 25°C.
2. RMA flux is recommended.
3. Methanol or isopropyl alcohols are recommended as cleaning agents.
4. Soldering iron tip 1/16" (1.6mm) minimum from housing.

H21B3 Features

• Opaque housing
• Low cost
• .035" apertures
• High I C(ON)

H21B4 Parameters

Technical/Catalog InformationH21B4
VendorFairchild Semiconductor
CategorySensors, Sensor Evaluation Kits
Lead Free StatusLead Free
RoHS StatusRoHS Compliant
Other Names H21B4
H21B4

H21B4 General Description

The H21B4, H21B5 and H21B6 consist of a gallium arsenide infrared emitting diode coupled with a silicon photodarlington in a plastic housing. The pack aging 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.

H21B4 Maximum Ratings

Parameter
Symbol
Rating
Unit
Operating Temperature
T OPR
-55 to +100
°C
Storage Temperature
T STG
-55 to +100
°C
Soldering Temperature (Iron) (2,3 and 4)
T SOL-I
240 for 5 sec
°C
Soldering Temperature (Flow) (2 and 3)
T SOL-F
260 for 10 sec
°C
INPUT (EMITTER)
Continuous Forward Current
IF
50
mA
Reverse Voltage
VR
6
V
Power Dissipation (1)
PD
100
mW
OUTPUT (SENSOR)
Collector to Emitter Voltage
V CEO
55
V
Emitter to Collector Voltage
V ECO
6
V
Collector Current
IC
40
mA
Power Dissipation (TC = 25°C) (1)
PD
150
mW
1. Derate power dissipation linearly 1.33 mW/°C above 25°C.
2. RMA flux is recommended.
3. Methanol or isopropyl alcohols are recommended as cleaning agents.
4. Soldering iron tip 1/16" (1.6mm) minimum from housing.

H21B4 Features

• Opaque housing
• Low cost
• 035" apertures
• High I C(ON)

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