Optical Sensors - Photointerrupters - Slot Type - Logic Output

Image Part Number Description / PDF Quantity Rfq
PM-U25

PM-U25

Panasonic

SENSOR OPTICAL 6MM MODULE SLOT

4838560

PM-F65-P

PM-F65-P

Panasonic

SENSOR OPTICAL 6MM MOD SLOT TYPE

38

PM-U25-C3

PM-U25-C3

Panasonic

SENSOR OPTICAL 6MM MOD CABLE 3M

293

PM-K45

PM-K45

Panasonic

SENSOR OPTICAL 6MM MODULE SLOT

537483

PM-Y65-P

PM-Y65-P

Panasonic

SENSOR OPTICAL 6MM MOD SLOT TYPE

1038

PM-F45-P-C3

PM-F45-P-C3

Panasonic

SENSOR OPTICAL 6MM MOD CABLE 3M

118

PM-K45-P-C3

PM-K45-P-C3

Panasonic

SENSOR OPTICAL 6MM MOD CABLE 3M

336

PM-L45

PM-L45

Panasonic

SENSOR OPTICAL 6MM MODULE SLOT

138496

PM-K45-C3

PM-K45-C3

Panasonic

SENSOR OPTICAL 6MM MOD CABLE 3M

70

PM-T65

PM-T65

Panasonic

SENSOR OPTICAL 6MM MOD SLOT TYPE

2634178

PM-R65-P

PM-R65-P

Panasonic

SENSOR OPTICAL 6MM MOD SLOT TYPE

0

PM-R45-P-C3

PM-R45-P-C3

Panasonic

SENSOR OPTICAL 6MM MOD CABLE 3M

351

PM-F65W

PM-F65W

Panasonic

SENSOR OPTICAL 6MM MOD SLOT TYPE

192

PM-R45-C3

PM-R45-C3

Panasonic

SENSOR OPTICAL 6MM MOD CABLE 3M

49

PM-Y45-P

PM-Y45-P

Panasonic

SENSOR OPTICAL 6MM MODULE SLOT

135911

PM-K25-C3

PM-K25-C3

Panasonic

SENSOR OPTICAL 6MM MOD CABLE 3M

48

PM-L65

PM-L65

Panasonic

SENSOR OPTICAL 6MM MOD SLOT TYPE

4094397

PM-K25-R

PM-K25-R

Panasonic

SENSOR OPTICAL 6MM MOD CABLE 3M

64

PM-K45-P

PM-K45-P

Panasonic

SENSOR OPTICAL 6MM MODULE SLOT

253155

PM-T45-P-C3

PM-T45-P-C3

Panasonic

SENSOR OPTICAL 6MM MOD CABLE 3M

66

Optical Sensors - Photointerrupters - Slot Type - Logic Output

1. Overview

Slot-type photointerrupters with logic output are optoelectronic sensors consisting of a light emitter (usually infrared LED) and a photodetector (phototransistor or photodiode) aligned in a U-shaped housing. When an object interrupts the light beam between the slot, the sensor generates a logic-level output signal. These devices are critical in industrial automation, consumer electronics, and medical equipment for position detection, motion control, and object counting.

2. Main Types & Functional Classification

Type Functional Features Application Examples
Transmissive Slot Type Direct light beam interruption detection Encoder position detection
Reflective Slot Type Detects reflected light from target objects Color mark sensing in printing machines
Logic Output Variant Integrated comparator circuit for digital output Industrial safety interlocks

3. Structure & Components

Typical construction includes: - Infrared LED emitter (850-940nm wavelength) - Phototransistor detector with built-in amplifier - Plastic housing forming mechanical slot (0.5-10mm width) - Integrated circuit for signal conditioning - Lead frame for PCB mounting (through-hole or SMD)

4. Key Technical Specifications

Parameter Typical Value Importance
Slot Width 2.0 - 8.0 mm Determines target object size detection
Response Time 2 - 20 s Crucial for high-speed applications
Output Type NPN/PNP Open Collector Compatibility with control systems
Current Transfer Ratio 100-600% Signal strength and reliability
Operating Temperature -40 C to +85 C Environmental durability

5. Application Fields

  • Industrial automation: Conveyor belt object counting
  • Office equipment: Paper jam detection in printers
  • Medical devices: Syringe pump position verification
  • Consumer electronics: Appliance door interlock systems
  • Automotive: Gear position detection in transmission systems

6. Leading Manufacturers & Products

Manufacturer Representative Product Key Features
Omron EE-SX671 Miniature slot (1.7mm), 10 s response time
Vishay VESPE-2020 High-temperature resistance (-40 C to +125 C)
STMicroelectronics VN8905 Integrated logic output with hysteresis

7. Selection Guidelines

Key considerations: - Required slot width vs target object dimensions - Environmental factors (dust, vibration, temperature) - Electrical compatibility with host system - Mechanical mounting constraints (through-hole vs SMD) - Required detection speed and output response time - EMI/RFI immunity for industrial environments

8. Industry Trends

Current developments include: - Miniaturization for mobile device integration - Smart sensors with embedded diagnostics - Wireless-enabled models for IoT applications - Improved optical efficiency through GaAlAs LEDs - Multi-channel integration for parallel detection

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