Reflective Photosensors (Photo Reflectors)
CNB2301 (ON2270)
Reflective photosensor
Non-contact point SW, object sensing
Unit: mm
■ Overview
Mark for indicating
Anode side
C0.5
CNB2301 is a small, thin reflective photosensor consisting of a
high efficiency GaAs infrared light emitting diode which is integrated
with a high sensitivity Darlington phototransistor used as the photo
detector in a single resin package.
±
3
Chip
center
■ Features
• Ultraminiature: 2.7 mm × 3.4 mm
• Visible light cutoff resin is used
• High current-transfer ratio
4-0.7
4-0.5
±0.±
■ Applications
• Detection of paper, film and cloth • Detection of position and edge
0.5
2
4
±.8
0.±5
• Liquid level sensor
• Start, end mark detection of magnetic tape
• Detection of rotary positioning
3.4±0.3
1: Anode
2: Cathode
3: Emitter
4: Collector
■ Absolute Maximum Ratings Ta = 25°C
Parameter
Input (Light Reverse voltage
emitting diode) Forward current
Power dissipation
Symbol Rating
Unit
V
PRSMW104-001 Package
VR
IF
3
50
75
20
mA
mW
V
PD
Output (Photo Collector-emitter voltage VCEO
transistor)
(Base open)
Emitter-collector voltage VECO
(Base open)
5
V
Collector current
IC
30
75
mA
mW
°C
Collector power dissipation
PC
Temperature Operating ambient temperature Topr
Storage temperature
−25 to +85
Tstg −30 to +100
°C
■ Electrical-Optical Characteristics Ta = 25°C 3°C
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
V
Input
Forward voltage
VF
IR
IF = 50 mA
VR = 3 V
1.3
1.5
characteristics Reverse current
0.01 10.00
µA
pF
Terminal capacitance
Ct
VR = 0 V, f = 1 MHz
VCE = 10 V
30
Output
Collector-emitter cutoff current ICEO
1.0
µA
characteristics (Base open)
1, 2
Transfer
Collector current *
IC
ID
VCC = 5 V, IF = 2 mA, RL = 100 Ω, d = 1 mm
VCC = 5 V, IF = 2 mA, RL = 100 Ω
0.46
12.00
mA
µA
V
characteristics Dark current
2.0
Collector-emitter saturation voltage VCE(sat) IF = 5 mA, IC = 0.5 mA
1.5
150
Rise time
Fall time
tr
tf
VCC = 10 V, IC = 1 mA, RL = 100 Ω
µs
150
µs
Note) 1. Input and output are handled electrically.
2. This product is not designed to withstand radiation
3. 1: Output current measurement method
*
2: Rank classification
*
Evaporated Al
Glass plate (d = 1 mm)
Rank
IC (mA)
Color
Q
R
S
0.46 to 1.75 1.30 to 4.95 3.15 to 12.00
Pink Black Blue
RL
IC
IF
VCC
Note) The part number in the parenthesis shows conventional part number.
Publication date: April 2004
SHG00051BED
1