1.9mm Round Subminiature Axial Phototransistor
PT91-21B
Features
․Fast response time
․High photo sensitivity
․Small junction capacitance
․Compatible with infrared and vapor phase reflow solder process.
․Pb free
․RoHS Compliance
․The product itself will remain within RoHS compliant version.
Descriptions
․PT91-21B is a phototransistor in miniature SMD package
which is molded in black transparent epoxy with spherical
top view lens. The device is spectrally matched to infrared
emitting diode.
Applications
․Miniature switch
․Counters and sorter
․Position sensor
․Infrared applied system
Device Selection Guide
1
Revision
Part Category
Chip
Material
Lens Color
PT
Silicon
Black
Copyright © 2013, Everlight All Rights Reserved.Release Date :23-Sep-2015.Issue No: DPT-0000300.Rev:2
:2
LifecyclePhase:
www.everlight.com
Release Date:2015-10-06 19:56:13.0
Expired Period: Forever
Data Sheet
1.9mm Round Subminiature Axial Phototransistor
PT91-21B
Package Dimensions
Collector
Emitter
Notes: 1.All dimensions are in millimeters
2.Tolerances unless dimensions ±0.1mm
Absolute Maximum Ratings (Ta=25℃)
2
Revision
Copyright © 2013, Everlight All Rights Reserved.Release Date : 23-Sep-2015.Issue No: DPT-0000300.Rev:2
:2
LifecyclePhase:
www.everlight.com
Release Date:2015-10-06 19:56:13.0
Expired Period: Forever
Data Sheet
1.9mm Round Subminiature Axial Phototransistor
PT91-21B
Parameter
Symbol
Rating
Collector-Emitter Voltage
VCEO
30
Units
V
Emitter-Collector-Voltage
VECO
5
V
IC
20
mA
Operating Temperature
Topr
-25 ~ +85
℃
Storage Temperature
Tstg
-40 ~ + 85
℃
Soldering Temperature *1
Tsol
260
℃
Power Dissipation at(or below)
25℃Free Air Temperature
Pd
75
mW
Collector Current
Notes: *1:Soldering time≦5 seconds.
Electro-Optical Characteristics (Ta=25℃)
Parameter
Rang Of Spectral Bandwidth
Wavelength Of Peak Sensitivity
Symbol
Condition
λ0.5
Min
Typ
Max
Unit
730
---
1100
nm
λP
---
---
940
---
nm
Collector-Emitter Breakdown
Voltage
BVCEO
IC=100μA
Ee=0mW/cm2
30
---
---
V
Emitter-Collector Breakdown
Voltage
BVECO
5
---
---
V
Collector-Emitter Saturation
Voltage
VCE(sat)
IC=2mA
Ee=1mW/cm2
---
---
0.4
V
Collector Dark Current
ICEO
VCE=20V
Ee=0mW/cm2
---
---
100
nA
On State Collector Current
IC(ON)
VCE=5V
Ee=1mW/cm2
1.0
3.0
---
mA
3
Revision
IE=10μA
Ee=0mW/cm2
Copyright © 2013, Everlight All Rights Reserved.Release Date : 23-Sep-2015.Issue No: DPT-0000300.Rev:2
:2
LifecyclePhase:
www.everlight.com
Release Date:2015-10-06 19:56:13.0
Expired Period: Forever
Data Sheet
1.9mm Round Subminiature Axial Phototransistor
PT91-21B
Typical Electro-Optical Characteristics Curves
Fig.1 Spectral Sensitivity
Fig.2 Collector Current vs.
Irradiance
1.0
Ta=25°C
0.8
0.6
0.4
0.2
0
700
800
900
1000 1100 1300
Fig.3 Collector Current vs.
Collector-Emitter Voltage
4
Revision
Copyright © 2013, Everlight All Rights Reserved.Release Date : 23-Sep-2015.Issue No: DPT-0000300.Rev:2
:2
LifecyclePhase:
www.everlight.com
Release Date:2015-10-06 19:56:13.0
Expired Period: Forever
Data Sheet
1.9mm Round Subminiature Axial Phototransistor
PT91-21B
Precautions For Use
1. Over-current-proof
Customer must apply resistors for protection , otherwise slight voltage shift will cause big
current change ( Burn out will happen ).
2. Storage
2.1 Do not open moisture proof bag before the products are ready to use.
2.2 Before opening the package, the Phototransistor should be kept at 30℃ or less and 90%RH or less.
2.3 The Phototransistor should be used within a year.
2.4 After opening the package, the Phototransistor should be kept at 30℃ or less and 60%RH or less.
2.5 The Phototransistor should be used within 168 hours (7 days) after opening the package.
2.6 If the moisture absorbent material (silica gel) has faded away or the Phototransistor have exceeded the
storage time, baking treatment should be performed using the following conditions.
Baking treatment : 60±5℃ for 24 hours.
3. Soldering Condition
3.1 Pb-free solder temperature profile
3.2 Reflow soldering should not be done more than two times.
3.3 When soldering, do not put stress on the Phototransistor during heating.
3.4 After soldering, do not warp the circuit board.
5
Revision
Copyright © 2013, Everlight All Rights Reserved.Release Date : 23-Sep-2015.Issue No: DPT-0000300.Rev:2
:2
LifecyclePhase:
www.everlight.com
Release Date:2015-10-06 19:56:13.0
Expired Period: Forever
Data Sheet
1.9mm Round Subminiature Axial Phototransistor
PT91-21B
4.Soldering Iron
Each terminal is to go to the tip of soldering iron temperature less than 350℃ for 3
seconds within once in less than the soldering iron capacity 25W. Leave two seconds and more
intervals, and do soldering of each terminal. Be careful because the damage of the product is often
started at the time of the hand solder.
5.Repairing
Repair should not be done after the Phototransistor have been soldered. When repairing is
unavoidable, a double-head soldering iron should be used (as below figure). It should be confirmed
beforehand whether the characteristics of the Phototransistor will or will not be damaged by
repairing.
Packing Quantity Specification
1000PCS/1Bag
6
Revision
Copyright © 2013, Everlight All Rights Reserved.Release Date : 23-Sep-2015.Issue No: DPT-0000300.Rev:2
:2
LifecyclePhase:
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Release Date:2015-10-06 19:56:13.0
Expired Period: Forever
Data Sheet
1.9mm Round Subminiature Axial Phototransistor
PT91-21B
Label Form Specification
CPN: Customer’s Production Number
P/N : Production Number
QTY: Packing Quantity
CAT: Ranks
HUE: Peak Wavelength
REF: Reference
LOT No: Lot Number
Notes
1. Above specification may be changed without notice. EVERLIGHT will reserve authority on
material change for above specification.
2. When using this product, please observe the absolute maximum ratings and the instructions
for using outlined in these specification sheets. EVERLIGHT assumes no responsibility for
any damage resulting from use of the product which does not comply with the absolute
maximum ratings and the instructions included in these specification sheets.
3. These specification sheets include materials protected under copyright of EVERLIGHT
corporation. Please don’t reproduce or cause anyone to reproduce them without EVERLIGHT’s
consent.
EVERLIGHT ELECTRONICS CO., LTD.
Office: No. 6-8, Zhonghua Rd., Shulin Dist.,
New Taipei City 23860, Taiwan
7
Revision
Tel: 886-2-2685-6688
Fax: 886-2685-2699,6897
http://www.everlight.com
Copyright © 2013, Everlight All Rights Reserved.Release Date : 23-Sep-2015.Issue No: DPT-0000300.Rev:2
:2
LifecyclePhase:
www.everlight.com
Release Date:2015-10-06 19:56:13.0
Expired Period: Forever
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