Everlight Electronics Co., Ltd. http:\\www.everlight.com Rev 2 Page: 1 of 10
Device No：DTT-091-002 Prepared date：09-20-2006 Prepared by：Jaine Tsai
Technical Data Sheet
1.9mm Round Subminiature “Yoke” Lead Phototransistor
PT91-21B/TR9
Features
․Fast response time
․High photo sensitivity
․Small junction capacitance
․Compatible with infrared and vapor phase reflow solder process.
․Pb free
․The product itself will remain within RoHS compliant version.
Descriptions
․PT91-21B/TR9 is a phototransistor in miniature SMD package
which is molded in black plastic 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 Chip
LED Part No. Material Lens Color
PT Silicon Black
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Device No：DTT-091-002 Prepared date：09-20-2006 Prepared by：Jaine Tsai
PT91-21B/TR9
Package Dimensions
Notes: 1.All dimensions are in millimeters
2.Tolerances unless dimensions ±0.1mm
Absolute Maximum Ratings (Ta=25℃)
Parameter Symbol Rating Units
Collector-Emitter Voltage VCEO 30 V
Emitter-Collector-Voltage VECO 5 V
Collector Current IC 20 mA
Operating Temperature Topr -25 ~ +85 ℃
Storage Temperature Tstg -40 ~ +85 ℃
Soldering Temperature Tsol 260 ℃
Power Dissipation at(or below)
25℃Free Air Temperature
Pc 75
mW
Notes: *1:Soldering time≦5 seconds.
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Device No：DTT-091-002 Prepared date：09-20-2006 Prepared by：Jaine Tsai
PT91-21B/TR9
Electro-Optical Characteristics (Ta=25℃)
Parameter Symbol Condition Min Typ Max Unit
Rang Of Spectral Bandwidth λ0.5 --- 730 --- 1100 nm
Wavelength Of Peak Sensitivity λP --- --- 940 --- nm
Collector-Emitter Breakdown
Voltage BVCEO IC=100µA
Ee=0mW/cm2 30 --- --- V
Emitter-Collector Breakdown
Voltage BVECO IE=100µA
Ee=0mW/cm2 5 --- --- V
Collector-Emitter Saturation
Voltage VCE(sat) IC=2mA
Ee=1m W/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 1.5 mA
Rise Time tr --- 15 ---
Fall Time tf
VCE=5V
IC=1mA
RL=1000Ω --- 15 ---
µS
Everlight Electronics Co., Ltd. http:\\www.everlight.com Rev 2 Page: 4 of 10
Device No：DTT-091-002 Prepared date：09-20-2006 Prepared by：Jaine Tsai
20
0
0
40
10 20 30 6050 70
100
60
40
80
140
120
160
2
0
-25
20
40
50
025 8575 100
60
80
100
0
0.2
0.4
0.6
0.8
1.0
Ta=25°
800 900 1000 1100700 130
0
C
2
0.01 0.1 110
C
0.001
0.01
0.1
1
10
PT91-21B/TR9
Typical Electro-Optical Characteristics Curves
Fig.1Collector Power Dissipation vs. Fig.2 Spectral Sensitivity
Ambient Temperature
Fig.3 Relative Collector Current vs. Fig.4 Collector Current vs.
Ambient Temperature Irradiance
Everlight Electronics Co., Ltd. http:\\www.everlight.com Rev 2 Page: 5 of 10
Device No：DTT-091-002 Prepared date：09-20-2006 Prepared by：Jaine Tsai
10
10
0
10
10
10
25 50 75 100
10
4
0
0
2
1
6
8
23
14
12
4
PT91-21B/TR9
Typical Electro-Optical Characteristics Curves
Fig.5 Collector Dark Current vs. Fig.6 Collector Current vs.
Ambient Temperature Collector-Emitter Voltage
Everlight Electronics Co., Ltd. http:\\www.everlight.com Rev 2 Page: 6 of 10
Device No：DTT-091-002 Prepared date：09-20-2006 Prepared by：Jaine Tsai
PT91-21B/TR9
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 LEDs should be kept at 30℃ or less and 90%RH or less.
2.3 The LEDs should be used within a year.
2.4 After opening the package, the LEDs should be kept at 30℃ or less and 70%RH or less.
2.5 The LEDs 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 LEDs 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 LEDs during heating.
3.4 After soldering, do not warp the circuit board.
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Device No：DTT-091-002 Prepared date：09-20-2006 Prepared by：Jaine Tsai
PT91-21B/TR9
4.Soldering Iron
Each terminal is to go to the tip of soldering iron temperature less than 280℃ 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 LEDs 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 LEDs will or will not be damaged by repairing.
Everlight Electronics Co., Ltd. http:\\www.everlight.com Rev 2 Page: 8 of 10
Device No：DTT-091-002 Prepared date：09-20-2006 Prepared by：Jaine Tsai
PT91-21B/TR9
Reliability Test Item And Condition
The reliability of products shall be satisfied with items listed below.
Confidence level：90%
LTPD：10%
NO. Item Test Conditions Test Hours/
Cycles
Sample
Sizes
Failure
Judgement
Criteria
Ac/Re
1 REFLOW Soldering TEMP.：260℃±5℃
10secs
6Mins 22pcs 0/1
2 Temperature Cycle
H : +100℃ 15mins
5mins
L : -40℃ 15mins
50Cycles 22pcs 0/1
3 Thermal Shock H :+100℃ 5mins
10secs
L :-10℃ 5mins
50Cycles 22pcs 0/1
4 High Temperature
Storage
TEMP.：+100℃ 1000hrs 22pcs 0/1
5 Low Temperature
Storage
TEMP.：-40℃ 1000hrs 22pcs 0/1
6 DC Operating Life VCE=5V 1000hrs 22pcs 0/1
7 High Temperature/
High Humidity
85℃ / 85% R.H 1000hrs 22pcs
IC(ON)≦L×0.8
L：Lower
Specification
Limit
0/1
Everlight Electronics Co., Ltd. http:\\www.everlight.com Rev 2 Page: 9 of 10
Device No：DTT-091-002 Prepared date：09-20-2006 Prepared by：Jaine Tsai
PT91-21B/TR9
Package Dimensions
Loaded Quantity Per Reel 1000PCS/Reel
Unit :mm
Everlight Electronics Co., Ltd. http:\\www.everlight.com Rev 2 Page: 10 of 10
Device No：DTT-091-002 Prepared date：09-20-2006 Prepared by：Jaine Tsai
RoHS
PT91-21B/TR9
Packing Quantity Specification
1.1000Pcs/1Volume，1Volume/1Bag
2.10Boxes/1Carton
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
MADE IN TAIWAN: Production Place
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. Tel: 886-2-2267-2000, 2267-9936
Office: No 25, Lane 76, Sec 3, Chung Yang Rd, Fax: 886-2267-6244, 2267-6189, 2267-6306
Tucheng, Taipei 236, Taiwan, R.O.C http:\\www.everlight.com
PT91-21B/TR9
