E16 Micro Optical Kit Encoder

E16 Features

  • Push-on hub - spring loaded collet design
  • Fits shaft diameters of 1.5mm (0.059 inches) and 2mm (0.079 inches)
  • 250/256 to 4,000/4096 cycles per revolution (CPR)
  • 1,000/1024 to 16000/16384 pulses per revolution (PPR)
  • Single +5V supply

See more info below

Configure the E16

E16 Product Description

Restriction of Hazardous Substances

The E16 16mm micro optical encoder is designed to provide A, B and Index digital quadrature signals for high volume, restricted space applications. The E16 utilizes an innovative, push-on encoder disk which accepts shaft diameters of 1.5mm and 2mm.

The E16 is designed to be a one-time installation micro optical encoder, the base provides mounting holes for two M1.6-0.35, length 3mm screws on a 10mm bolt circle. The encoder cover is easily snapped onto the base and is marked with the connector pin-out.

The E16 series encoder is connected using a 5-conductor, polarized, 0.8mm pitch connector (Hirose part number DF52-5P-0.8C). Mating cable (see the Cables web page) is not included and is available separately.

Please Note: Due to the E16's design, it is recommended for use as a one-time installation. 

Product Specifications

View here or download the specifications


Parameter Value Units
Operating Temperature -40 to 100 C
Electrostatic Discharge, IEC 61000-4-2 ±12 kV
Shock, 6 millisecond, half-sine 75 G
Vibration (20Hz to 2kHz, sinusoidal) 20 G


Max. Shaft Axial Play ±0.010 in.
Max. Shaft Runout 0.002 T.I.R. in.
Max. Acceleration 250000 rad/sec²
Maximum RPM, CPR = 250/500/1000/2000 48000 RPM
Maximum RPM, CPR = 256/512/1024/2048 46875 RPM
Maximum RPM, CPR = 4000 27750 RPM
Maximum RPM, CPR = 4096 27099 RPM
Codewheel Moment of Inertia 2.8 x 10-7 oz-in-s²
Mounting Screw Size
Default (D-option base)

M1.6 x 3
Screw Bolt Circle Diameter 10 ±0.13 mm
Minimum Shaft Length (1) 6 mm
Maximum Shaft Length (1) 7.75 mm
Mounting Screw Torque 1-2 in-lbs
Technical Bulletin TB1001 - Shaft and Bore Tolerances Download

(1) Including axial play.


Supply Voltage 4.5 5.0 5.5 V  
Supply Current   18 26 mA no load
Low-level Output     0.4 V IOL= 4 mA, Vcc = 5V
0.1   V no load
High-level Output 4.7     V IOH= 4 mA, Vcc = 5V
  4.9   V no load
Output Rise Time   80 135 ns no load
Output Fall Time   80 135 ns no load
Maximum Output Frequency
250/256 CPR
500/512 CPR
1,000/1,024 CPR
2,000/2,048 CPR
4,000/4,096 CPR


Phase Relationship

  • Specifications apply over entire operating temperature range.
  • Values are for the worst error over full rotation.
  • Refer to timing diagram below.
Parameter Symbol Min. Typ. Max. Units
Symmetry X, Y 150 180 210 °e
Quadrature Z 60 90 120 °e
Index Pulse Width Po 60 90 120 °e
Ch. I Rise After Ch. B or Ch. A Fall t1   10   ns
Ch. I Fall After Ch. B or Ch. A Rise t2   10   ns

Timing Diagram

The number of Cycles (C) of the A or B outputs Per Revolution.
Index (I)
The index output goes high once per revolution, coincident with the low states of channels A and B, nominally 1/4 of one cycle (90°e).
One Shaft Rotation
360 mechanical degrees.
One Electrical Degree (°e)
1/360th of one cycle.
One Cycle (C)
360 electrical degrees (°e). Each cycle can be decoded into 1, 2, or 4 states, referred to as x1, x2, or x4 resolution multiplication.
The number of resolvable Positions Per Revolution of the encoder disk with x4 quadrature decoding.
Quadrature (Z)
The phase lag or lead between channels A and B in electrical degrees, nominally 90°e.
A measure of the relationship between (X) and (Y) in electrical degrees, nominally 180°e.


Pin Description
1 Ground
2 Index
3 A channel
4 +5VDC power
5 B channel


1. Centering Tool*

Part #: CTOOL-E16-(Shaft Diameter)
Description: This reusable tool is used to accurately center the E16 base on the shaft.

2. Spacer Tool*

Part #: SPACER-E16
Description: This reusable tool is used to properly space the codewheel from the encoder.

*Both the CTOOL and SPACER-E16 tools are included with all packaging options.

3. Screws

Part #: SCREW-M16-3MM-PH
Description: Pan Head, Philips M1.6-0.35, length 3mm.
Use: Base Mounting
Quantity Required: 2
Screws are included

Additional Information

Downloads Available


3D Model Downloads

Please configure your product first to download a 3D model.
(Note: The formats below will become links if there are 3D models available.)

    • SolidWorks format
    • IGES format
    • Parasolid format
    • STEP format

    Related Products & Accessories

    The following are related products for the E16

    Product Configurator

    For pricing, this product requires configuration.

    Begin by completing either Option 1 or 2 below. Questions? Contact our support team.

    Option 1: Configure the Product

    Use the configuration tool to provide information regarding your product needs. Not sure what to do or need additional assistance? Our support team is here to help.

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    1. CPR

    2. Bore

    3. Output

    4. Cover

    5. Base

    6. Packaging

    Option 2: Enter the Product Part Number Directly

    If you know your product part number, enter it in the following field. The part number format looks something like this: E5-5000-394-IE-S-D-D-3...

    E16 Pricing

    Quantity Unit Price
    1 $43.67
    5 $38.84
    10 $37.31
    50 $36.19
    100 $36.44
    Over 100 Call for Quote
    Quantity Unit Price Subtotal
    $24.81 $43.67

    For purchasing or volume discounts, please configure the part above, then use the completed part number and contact us!


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