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DetailsRK series is a high performance, low cost, two-channel optical incremental encoder module.
It consists of a highly collimated light source and a detector IC enclosed in a small C-shaped plastic package, matched with a code disc or codestrip, it provides information of rotary or linear position.
RK series also has linear (LPI) options: 20, 45, 90, 150, 180, 300, 360.
Photo-detector Array
-20°C to +85°C Operating Temperature
Resolution Up to 600 CP
C-Shape Structure, Easy to Mount
TTL Compatible
Single 5V Supply
Typical applications include: printers, plotter copiers, office automation and industrial automation equipment.
Safety Notice: Not recommended for use in safety critical application. Eg. ABS braking system.
Parameter | Symbol | Range |
Storage Temperature | Ts | -40°C to +85°C |
| Operating Temperature | TA | -20 ~ +85 ⁰C |
Supply Voltage | Vcc | -0.5V to 7V |
Soldering Temperature | - | ≤260°C ( t ≤ 5s ) |
Response Frequency | f | 200KHz |
Reverse Voltage | Vr | 5V |
Forward Current ( 650nm Light Source ) | If | 30mA |
| Forward Current ( 850nm Light Source ) | If | 70mA |
Operating Temperature | T | -20 ~ +85 ⁰C |
| Supply Voltage | Vcc | 4.5 ~ 5.5V |
Electrical Characteristics Under Recommended Operating Range,Typical at 25 ⁰C
Parameter | Symbol | Min. | Typ. | Max. | Units | Condition |
Light Source (650nm) Forward Current | Vf | 1.8 | 2 | 2.3 | V | If=20mA |
Light Source(850 nm) Forward Current | Vf | 1.4 | - | 1.9 | V | If=20mA |
Light Source(650nm) Wavelength | λp | 650 | - | 660 | nm | If=20mA |
Light Source(850nm) Wavelength | λp | 840 | - | 860 | nm | If=20mA |
Supply Current | Vcc | - | 10 | 15 | mA | If=20mA |
Low Level Output Voltage | VOL | - | 0.2 | 0.4 | V | 2kΩ Pull-up inside |
High Level Output Voltage | VOH | 2.4 | 4.5 | - | V | 2kΩ Pull-up inside |
A/B Rise Time | tr | - | 160 | - | ns | 2kΩ Pull-up inside CL=8PF |
A/B Fall Time | tr | - | 20 | - | ns | 2kΩ Pull-up inside CL=8PF |
| AB Duty Ration | Dt | 40 | 50 | 60 | % | - |
| A/B Phase Difference | θ | 60 | 90 | 120 | ⁰e | - |
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I-V Graph Fig.1 650nm Forward Voltage And Forward Current | L- I Graph Fig.2 650nm Forward Current And Relative Luminous Intensity |
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I-V Graph Fig.3 850nm Forward Voltage And Forward Current | L- I Graph Fig.4 850nm Forward Current And Relative Luminous Intensity |
Fig.5 A/B Output Wave Form---Arrow direction
Fig.6 Straight Lead Dimensions Without Mounting H
Fig.7 Straight Lead Dimensions With Mounting Holes
Fig.8 Bent Lead Dimension Without Mounting Holes
Fig.9 Bent Lead Dimension With Mounting Holes
Pin Name | Function | Input / Output |
An | Positive pole of light source (240 ohmcurrent limiting resistor is recommended, VCC=5V) | - |
Ca | Negative pole of light source | - |
Vcc | Power Supply +,5V | Power Supply |
Aout | A Channel output, 2kΩ Pull-up inside | Output |
Bout | B Channel output, 2kΩ Pull-up inside | Output |
Gnd | Ground | Ground |
RK series is available in a variety of options, as shown in the table below.
| Item | Description | QTY/Tray | Trays/Carton | G.W | N.W | QTY/Carton | Package Size |
| RK Series | RK Series Optical Encoder Modules | 160 pcs | 10 trays | 1.96 kgs | 0.8 kgs | 1600 pcs | 375*314*165 (mm) |
| 160 pcs | 40 trays | 6.94 kgs | 3.2 kgs | 6400 PCS | 560*270*320 (mm) |
Material Weight Schedule
| Material | Optical Encoder Module | Tray | Carton/Small | Carton/Big |
| Weight | 0.5g/pc | 74g/pc | 420g/pc | 780g/pc |
| QTY/Carton | 1,600pcs / 6,400pcs | 10trays / 40 trays | 1pc | 1pc |
| Weight/Carton | 800g / 3,200g | 740g / 2,960g | 420g | 780g |
| 1,960g/1600pcs | 6,940g/6400pcs |
Discover all the technical specifications by downloading the datasheet today.
| Part Number | Interface |
Dimensions
(mm) |
Resolution Ranges | Resolution Counter |
Communication Frequency |
Working Temperature |
Communication Frequency |
Operation Speeds |
Protection Structure |
Footprint 3D | Datasheet | Sample |
| RZ35A08 | RS485 | Φ35mm | 17~23 Bits | Single/Multi-Turn | Differential output | -20°C-+105°C | 16K | 6000rpm | IP40 |  |
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| RZ35A09 | RS485 | Φ35mm | 17~23 Bits | Single/Multi-Turn | Differential output | -20°C-+105°C | 16K | 6000rpm | IP40 | |
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| RZ35D06Q | RS485 | Φ35mm | 17~23 Bits | Single/Multi-Turn | Differential output | -20°C-+105°C | 16K | 6000rpm | IP40 | |
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| RZ35D06S | RS485 | Φ35mm | 17~23 Bits | Single/Multi-Turn | Differential output | -20°C-+105°C | 16K | 6000rpm | IP40 | |
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| RZL4408A | RS485 | Φ44mm | 17~23 Bits | Single/Multi-Turn | Differential output | -20°C-+105°C | 16K | 6000rpm | IP40 | |
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| RZH4409A | RS485 | Φ44mm | 17~23 Bits | Single/Multi-Turn | Differential output | -20°C-+105°C | 16K | 6000rpm | IP40 | |
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| RZL4409A | RS485 | Φ44mm | 17~23 Bits | Single/Multi-Turn | Differential output | -20°C-+105°C | 16K | 6000rpm | IP40 | |
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| RZ4809A | RS485 | Φ48mm | 17~23 Bits | Single/Multi-Turn | Differential output | -20°C-+105°C | 16K | 6000rpm | IP40 | |
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| UZ3509 | RS485 | Φ35mm | 1000-5000CPR | Single/Multi-Turn | Differential output | -20°C-+105°C | 500khz | / | IP40 | |
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| UZ4408 | RS485 | Φ44mm | 1000-5000CPR | Single/Multi-Turn | Differential output | -20°C-+105°C | 500khz | / | IP40 | |
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| UZ4409 | RS485 | Φ44mm | 1000-5000CPR | Single/Multi-Turn | Differential output | -20°C-+105°C | 500khz | / | IP40 | |
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| UZ4809 | RS485 | Φ48mm | 1000-5000CPR | Single/Multi-Turn | Differential output | -20°C-+105°C | 500khz | / | IP40 | |
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| RS972 | / | / | / | / | / | -40°C to +85°C | / | / | / | |
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| RS970 | / | / | / | / | / | -40°C to +85°C | / | / | / | |
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| RK Series | / | / | / | / | / | -20°C to +85°C | / | / | / | |
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| RK Series | / | / | / | / | / | -20°C to +85°C | / | / | / | |
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| RK Series | / | / | / | / | / | -20°C to +85°C | / | / | / | |
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| RF28 | / | / | / | Single/Multi-Turn | / | -40 °C ~+85 °C | / | / | / | |
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| RT28 | / | / | / | Single/Multi-Turn | / | -40 °C ~+85 °C | / | / | / | |
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| RF20 | / | / | / | Single/Multi-Turn | / | -40 °C ~+85 °C | / | / | / | |
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| RR28 | / | / | / | Single/Multi-Turn | / | -40 °C ~+85 °C | / | / | / | |
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| RS5 | / | / | / | Single/Multi-Turn | / | / | / | / | / | |
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| RSG35 | RS485 | / | 17-23 Bits | Single/Multi-Turn | ≤16K | -20 ℃ ~+105 ℃ | 16K | 6000rpm | IP40 | |
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| RSU3506 | RS485 | / | 17-24 Bits | Single/Multi-Turn | ≤16K | -20 ℃ ~+105 ℃ | 16K | 6000rpm | IP40 | |
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| MS Series | / | / | 17 Bits | Single/Multi-Turn | ≤16K | -10℃～105℃ | 16K | ≤6000rpm | / | |
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| RZ44 & RZ48 | RS485 | / | 17-23 Bits | Single/Multi-Turn | ≤16K | -20 ℃ ~+105 ℃ | 16K | 6000rpm | IP40 | |
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| RZ1337A | RS485 | / | 25 Bits | Single/Multi-Turn | ≤16K | -20°C-+105°C | 16K | 12000rpm | IP40 | |
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| RZ7810 | RS485 | / | 23~25 Bits | Single/Multi-Turn | ≤16K | -20°C-+105°C | 16K | 6000rpm | IP40 | |
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| RS Series | RS485 | / | 17~23 Bits | Single/Multi-Turn | ≤16K | -20°C-+105°C | 16K | 6000rpm | IP40 | |
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| RZ35 Series | RS485 | Φ35mm | 17~23 Bits | Single/Multi-Turn | Differential output | -20°C-+105°C | 16K | 6000rpm | IP40 | |
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| RZ35 Series | RS485 | Φ35mm | 17~23 Bits | Single/Multi-Turn | Differential output | -20°C-+105°C | 16K | 6000rpm | IP40 | |
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Essential for Precision and Reliability in Medical Equipment
Improve Automation and Efficiency in Various Robotic Applications
Improve the Efficiency and Reliability of Automation Systems
Accurate Feedback on Position and Speed
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