ROHM RPI-441C1 Data Sheet
Summary
Rohm RPI-441C1 photointerrupter datasheet for optical control. Features 4mm gap, 0.5mm slit for precision position detection, minimal stray light influence, and low saturation voltage. Includes ratings, optical characteristics, response times, and application curves. For facsimiles, printers, and optical equipment. For sensor design engineers.
Page 1 Text Content
RPI-441C1 In fr ar ed ra ns fe ut pu In pu
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Photointerrupter, Small type LA IV LL Ic LA IV LL Ic
Absolute maximum ratings (Ta=25°C)
Parameter Symbol Limits Unit Applications
Forward current IF m A
Optical control equipment
Reverse voltage VR
Facsimiles
Power dissipation PD m W Printers Collector-emitter voltage VCEO
Features
Emitter-collector voltage VECO 4.5 Collector current IC m A 1) Compact with a 4mm gap.
Collector power dissipation PC m W 2) High precision position detection (slit width of 0.5mm).
Operating temperature Topr −25 to +85 °C
3) Minimal influence from stray light.
Storage temperature IS IP IO
Tstg −30 to +85 °C
LL IS IP IO (m 4) Low collector-emitter voltage.
Electrical and optical characteristics (Ta=25°C)
Parameter Symbol Min. Typ. Max. Unit Conditions
Forward voltage VF 1.3 1.6 IF=50m A Reverse current IR μA VR=5V Dark current ICEO 0.5 μA VCE=10V Peak sensitivity wavelength λP nm Collector current IC 0.2 0.55 m A VCE=5V, IF=20m A Collector-emitter saturation
VCE(sat) 0.4 IF=20m A, IC=0.1m A
voltage Response time tr tf μs VCC=5V, IF=20m A, RL=100Ω
Cut-off frequency f C MHz
IF=50m A ∗ Non-coherent Infrared light emitting diode used. Peak light emitting wavelength λP nm
LA IV LL Ic VCC=5V, IC=1m A, RL=100Ωtr tf Response time IF μs ∗ This product is not designed to be protected against electromagnetic wave.
Maximum sensitivity wavelength λP nm
Electrical and optical characteristics curves
VCE=5V IF=20m A
Ta=25°C −25°C 0°C 25°C 50°C 75°C
DISTANCE : d (mm) AMBIENT TEMPERATURE : Ta (°C) FORWARD VOLTAGE : VF (V)
Fig.1 Relative output current vs. Fig.3 Forward current vs. forward distance ( ) Fig.2 Forward current falloff voltage
VCE=5V IF=20m A Ta=25°C
PD PC
DISTANCE : d (mm) AMBIENT TEMPERATURE : Ta (°C) AMBIENT TEMPERATURE : Ta (°C)
Fig.4 Relative output current vs. Fig.5 Power dissipation / collector power Fig.6 Relative output vs. ambient
distance ( ) dissipation vs. ambient temperature temperature
Page Summary Contents For ROHM RPI-441C1 Data Sheet
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 3 |
| File Size | 65.36 KB |
| Published | June 17, 2026 |
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Frequently Asked Questions
What is the gap size of the RPI-441C1?
The photointerrupter has a compact 4mm gap with a 0.5mm slit width for high precision position detection.
What is the maximum forward current rating?
The absolute maximum forward current (IF) is 50 mA at an ambient temperature of 25°C.
What is the operating temperature range?
The device operates within a temperature range of -25°C to +85°C.
Is this product protected against electromagnetic waves?
No, this product is not designed to be protected against electromagnetic wave interference.