ENC-A3I - Optical Encoders
  • 100 to 10,000 Cycles Per Revolution (CPR)
  • Tracks 0 to 300,000 Cycles Per Second
  • Up to 40,000 Pulses Per Revolution (PPR)
  • 2-Channel Quadrature TTL Squarewave Outputs
  • Third Channel Index
  • Operating Temperature of -40° to +100° C
  • Powered From a Single +5VDC Power Supply
  • Allows for ± .010" Axial Shaft Play
  • RoHS Compliant and REACH Certified
Optical Incremental Rotary - ENC-A3I with Index

The ENC-A3I is a high resolution single-ended encoder with an optional third index channel. This encoder requires a minimum shaft length of .445" and can be attached to shaft sizes ranging from .079" to 1" in diameter. The ENC-A3I provides digital feedback information for motion control applications that require position, speed and/or direction control.

Optical Encoder Module Update: This new transmissive optical encoder module was designed to be an improved replacement for the Avago HEDS-9000 series encoder module. This module is designed to detect rotary position when used with a code wheel. The new module consists of a lensed LED source and a monolithic detector IC enclosed in a small polymer package. The new module uses phased array detector technology to provide superior performance and greater tolerances over traditional aperture mask type encoders. The new module provides digital A & B quadrature outputs with an optional third output index channel. Each module is resolution specific and is matched to the resolution of a code wheel. All standard resolutions offered by the HEDS-9000 series encoder module, as well as additional resolutions, are now supported by the new module. The new module operates with a single 5V supply and provides single ended outputs which are capable of both sinking and sourcing 8mA at TTL levels. An internal 0.1 uF decoupling capacitor is designed into the new module to provide enhanced noise immunity over the HEDS-9000 series encoder modules. Physically, the new module has no external wire loops which can interfere when mounting. The connector pins are 0.051" shorter than HEDS modules, while still providing .30" insertion depth.

*Select a part number from the chart below or build your own part number using the Ordering Information tab at the bottom of the page. Cables and Centering Tools are also available. For instructions on installing your encoder to a motor, view our step by step video tutorial here.

Item Counts
Per Rev
(CPR)
Bore
Size
Index
Channel
Cover Base Price
(USD)
$AVE
Quantity
Discounts
Stock
Status
Add To
Cart
ENC-A3I-0100-250-H 100 250 Yes H - $70.00 view here
Quantity Discounts
1pc. $70.00
10pc. $58.89
25pc. $57.51
50pc. $56.19
100pc. $50.12
Contact Us for Quantities over 100
Typ. 10 Days Add to Cart
ENC-A3I-1000-250-H-M 1000 250 Yes H M $77.00 view here
Quantity Discounts
1pc. $77.00
10pc. $65.54
25pc. $64.16
50pc. $62.84
100pc. $58.56
Contact Us for Quantities over 100
Typ. 10 Days Add to Cart
ENC-A3I-1800-500-H-M 1800 500 Yes H M $88.00 view here
Quantity Discounts
1pc. $88.00
10pc. $76.94
25pc. $75.57
50pc. $74.24
100pc. $72.32
Contact Us for Quantities over 100
Typ. 10 Days Add to Cart
ENC-A3I-2000-125-E-M 2000 125 Yes E M $77.00 view here
Quantity Discounts
1pc. $77.00
10pc. $65.54
25pc. $64.16
50pc. $62.84
100pc. $58.56
Contact Us for Quantities over 100
Typ. 10 Days Add to Cart
ENC-A3I-2000-197-H 2000 197 Yes H - $70.00 view here
Quantity Discounts
1pc. $70.00
10pc. $58.89
25pc. $57.51
50pc. $56.19
100pc. $50.12
Contact Us for Quantities over 100
Typ. 10 Days Add to Cart
ENC-A3I-2000-250-H 2000 250 Yes H - $70.00 view here
Quantity Discounts
1pc. $70.00
10pc. $58.89
25pc. $57.51
50pc. $56.19
100pc. $50.12
Contact Us for Quantities over 100
Typ. 10 Days Add to Cart
ENC-A3I-2000-375-H 2000 375 Yes H - $70.00 view here
Quantity Discounts
1pc. $70.00
10pc. $58.89
25pc. $57.51
50pc. $56.19
100pc. $50.12
Contact Us for Quantities over 100
1 in Stock Add to Cart
ENC-A3I-2048-157 2048 157 Yes - - $70.00 view here
Quantity Discounts
1pc. $70.00
10pc. $58.89
25pc. $57.51
50pc. $56.19
100pc. $50.12
Contact Us for Quantities over 100
Typ. 10 Days Add to Cart
ENC-A3I-2048-157-H 2048 157 Yes H - $70.00 view here
Quantity Discounts
1pc. $70.00
10pc. $58.89
25pc. $57.51
50pc. $56.19
100pc. $50.12
Contact Us for Quantities over 100
Typ. 10 Days Add to Cart
ENC-A3I-2048-250-H 2048 250 Yes H - $70.00 view here
Quantity Discounts
1pc. $70.00
10pc. $58.89
25pc. $57.51
50pc. $56.19
100pc. $50.12
Contact Us for Quantities over 100
Typ. 10 Days Add to Cart
ENC-A3I-2048-500-H 2048 500 Yes H - $81.00 view here
Quantity Discounts
1pc. $81.00
10pc. $70.29
25pc. $68.92
50pc. $67.59
100pc. $64.23
Contact Us for Quantities over 100
Typ. 10 Days Add to Cart
ENC-A3I-2500-197-H-M 2500 197 Yes H M $77.00 view here
Quantity Discounts
1pc. $77.00
10pc. $65.54
25pc. $64.16
50pc. $62.84
100pc. $58.56
Contact Us for Quantities over 100
Typ. 10 Days Add to Cart
ENC-A3I-2500-236 2500 236 Yes - - $70.00 view here
Quantity Discounts
1pc. $70.00
10pc. $58.89
25pc. $57.51
50pc. $56.19
100pc. $50.12
Contact Us for Quantities over 100
Typ. 10 Days Add to Cart
ENC-A3I-2500-236-H 2500 236 Yes H - $70.00 view here
Quantity Discounts
1pc. $70.00
10pc. $58.89
25pc. $57.51
50pc. $56.19
100pc. $50.12
Contact Us for Quantities over 100
Typ. 10 Days Add to Cart
ENC-A3I-2500-236-H-M 2500 236 Yes H M $77.00 view here
Quantity Discounts
1pc. $77.00
10pc. $65.54
25pc. $64.16
50pc. $62.84
100pc. $58.56
Contact Us for Quantities over 100
Typ. 10 Days Add to Cart
ENC-A3I-2500-250-E 2500 250 Yes E - $70.00 view here
Quantity Discounts
1pc. $70.00
10pc. $58.89
25pc. $57.51
50pc. $56.19
100pc. $50.12
Contact Us for Quantities over 100
Typ. 10 Days Add to Cart
ENC-A3I-2500-250-H 2500 250 Yes H - $70.00 view here
Quantity Discounts
1pc. $70.00
10pc. $58.89
25pc. $57.51
50pc. $56.19
100pc. $50.12
Contact Us for Quantities over 100
Typ. 10 Days Add to Cart
ENC-A3I-2500-394 2500 394 Yes - - $70.00 view here
Quantity Discounts
1pc. $70.00
10pc. $58.89
25pc. $57.51
50pc. $56.19
100pc. $50.12
Contact Us for Quantities over 100
Typ. 10 Days Add to Cart
ENC-A3I-2500-472-H-M 2500 472 Yes H M $88.00 view here
Quantity Discounts
1pc. $88.00
10pc. $76.94
25pc. $75.57
50pc. $74.24
100pc. $72.32
Contact Us for Quantities over 100
1 in Stock Add to Cart

  • Ordering Information
  • Dimensions
  • Pin Assignment
  • A3 Base Options
  • A3 Cover Options
  • Accessories
Optical Incremental Rotary - ENC-A3I Ordering Information
Optical Incremental Rotary - ENC-A3I Dimensions
Optical Incremental Rotary - ENC-A3I Pin Assignment
Ordering Information
Optical Incremental Rotary - ENC-A3I Ordering Information
Dimensions
Optical Incremental Rotary - ENC-A3I Dimensions
Pin Assignment
Optical Incremental Rotary - ENC-A3I Pin Assignment
A3 Base Options
A3 Cover Options
Accessories