Document
Technical Data Sheet 1.3mm Axial Flat Top Phototransistor
Features
․Flat response time ․High photo sensitivity ․Small junction capacitance ․Pb-free ․The product itself will remain within RoHS compliant version.
Descriptions
․PT28-21B/F8 is a phototransistor in miniature SMD package which is molded in a black plastic with flat 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
LED Part No.
Chip Material
PT Silicon
Resin Color
Black
PT28-21B/F8
Everlight Electronics Co., Ltd. Device No:SZDTT-281-002
http:\\www.everlight.com Prepared date:5-Dec-2007
Rev 1
Page: 1 of 9
Prepared by:Qilong Chen
Package Dimensions
PT28-21B/F8
Notes: 1.All dimensions are in millimeters 2.Tolerances unless dimensions ±0.1mm
Everlight Electronics Co., Ltd. Device No:SZDTT-281-002
http:\\www.everlight.com Prepared date:5-Dec-2007
Rev 1
Page: 2 of 9
Prepared by:Qilong Chen
Absolute Maximum Ratings (Ta=25℃)
Parameter
Symbol
Collector-Emitter Voltage Emitter-Collector-Voltage Collector Current Operating Temperature Storage Temperature Power Dissipation at(or below) 25℃Free Air Temperature
VCEO VECO
IC Topr Tstg Pc
Soldering Temperature
Tsol
Notes: *1:Soldering time≦5 seconds.
Rating 30 5 20
-25 ~ +85 -40 ~ +100
75
PT28-21B/F8
Units V V mA ℃ ℃ mW
Reflow Soldering : 260 ℃ for 10 sec. Hand Soldering : 350 ℃ for 3 sec.
Electro-Optical Characteristics (Ta=25℃)
Parameter
Symbol
Condition
Rang Of Spectral Bandwidth
λ0.5
---
Wavelength Of Peak Sensitivity
Collector-Emitter Breakdown Voltage
λP BVCEO
---
IC=100μA Ee=0mW/cm2
Emitter-Collector Breakdown Voltage
BVECO
IE=100μA Ee=0mW/cm2
Collector-Emitter Saturation Voltage
VCE(sat)
IC=2mA Ee=1m W/cm2
Collector Dark Current
ICEO
VCE=20V Ee=0mW/cm2
Min Typ Max Unit 730 --- 1100 nm --- 940 --- nm 30 --- --- V
5 --- --- V
--- --- 0.4 V
--- --- 100 nA
On State Collector Current
IC(ON)
VCE=5V Ee=1mW /cm2
0.1 0.3 ---- mA
Rise Time Fall Time
tr
VCE=5V
--- 15 ---
IC=1mA
μS
tf
RL=1000Ω
--- 15 ---
Everlight Electronics Co., Ltd. Device No:SZDTT-281-002
http:\\www.everlight.com Prepared date:5-Dec-2007
Rev 1
Page: 3 of 9
Prepared by:Qilong Chen
PT28-21B/F8
Typical Electro-Optical Characteristics Curves
Fig.1Collector Power Dissipation vs.
Fig.2 Spectral Sensitivity
Ambient Temperature
100 1.0
Ta=25OC
80 0.8
60 0.6
40
20
0 -25 0
25 50 75 85 100
0.4
0.2
0 600 700 800 900 1000 1100 1200
Fig.3 Relative Collector Current vs. Ambient Temperature
160 140 2 120 100 80 60 40 20
0 0 10 20 30 40 50 60 70
Fig.4 Collector Current vs. Irradiance
100
C 10
1
0.1
0.01 0.5
1
3
2
5
Everlight Electronics Co., Ltd. Device No:SZDTT-281-002
http:\\www.everlight.com Prepared date:5-Dec-2007
Rev 1
Page: 4 of 9
Prepared by:Qilong Chen
PT28-21B/F8
Typical Electro-Optical Characteristics Curves
Fig.5 Collector Dark Current vs.
Fig.6 Collector Current vs.
Ambient Temperature
Collector-Emitter Voltage
10 14
12 10 10
8 10
6
10 4 2
10 0 25 50 75 100
0 0 123
4
Everlight Electronics Co., Ltd. Device No:SZDTT-281-002
http:\\www.everlight.com Prepared date:5-Dec-2007
Rev 1
Page: 5 of 9
Prepared by:Qilong Chen
PT28-21B/F8
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 After opening the package: The LED's floor life is 1 year under 30℃or less and 60% RH or less.
If unused LEDs remain, it should be stored in moisture proof packages. 2.4 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.
Everlight Electronics Co., Ltd. Device No:SZDTT-281-002
http:\\www.everlight.com Prepared date:5-Dec-2007
Rev 1
Page: 6 of 9
Prepared by:Qilong Chen
PT28-21B/F8
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 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 character.