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QtyUnit price
1+$ 75.05
10+$ 56.13
20+$ 47.11
50+$ 38.86
100+$ 34.25
Datasheet ID4501G
(Size:319.3 KB)
Datasheet EPT
(Size:244.6 KB)
Assembly Guide
(Size:356.5 KB)
3D Model 4501
(Size:182.8 KB)


  • Highly miniaturized: 5 x 6 x 0.8 mm
  • Outputs A quad B
  • Robust against oil grease, liquids, dust, particles
  • Programmable resolution and max speed
  • Optional with holder, cable and connector

The inductive gear speed sensor ID4501G consists of a sensor chip and a gearwheel. The sensor chip is an integrated circuit in a PCB housing. It provides incremental A and B output signals in quadrature. The gearwheel is in ferromagnetic steel and has a module 0.5.

The resolution and the maximum speed of the sensor are user-programmable or can be programmed ex-factory.

Datasheet ID4501G
(Size:319.3 KB)
Datasheet EPT
(Size:244.6 KB)
Assembly Guide
(Size:356.5 KB)
3D Model 4501
(Size:182.8 KB)

Output signals

A quad B


up to x16’384

Tooth frequency

0 up to 25 kHz

A/B frequency

0 up to 1 MHz


5V, 10 mA


-20 to 100°C


0.1 – 0.6 mm

The inductive gear speed sensor ID4501G can be operated with a gear made of ferromagnetic material and with module 0.5. POSIC uses gears from the company NOZAG, the datasheet of these gears is under the downloads tab.

The sensor is not intended for operation with non-ferromagnetic gears.

The sensor is not intended for operation with gears with module < 0.4 or module > 0.6. 

Encoder dimensions (mm).

Recommended schematic.

Recommended footprint.

Dimensions (mm) of ID4501 encoder on encoder-holder type A with flat cable (pitch 1.27 mm) and 8-pin DIN41651 connector.

Inductive Gear Speed Sensor Chip ID4501G

$ 75.05 Unit Price
Total Price

Display price and ordering code for the encoder or for the Evaluation & Programming Tool

Programmable by means of POSIC’s

Evaluation & Programming Tool or

pre-programmed ex-factory

Orientation of the inductive speed sensor with respect to the gear

See datasheet Table 1

Maximum teeth frequency

See datasheet Table 2

Interpolation factor per tooth

See Datasheet Table 3

LookUp Table to compensate the periodic non-linearity of the gear teeth

See datasheet table 4

Ferromagnetic gear

See Datasheet Table 5

Holder on which the encoder is mounted See datasheet table 6

Standard cable: 0 to 100°C

High-temp cable: -40 to 125°C

See datasheet Table 7

See datasheet Table 8

Select the total number of encoders (The photo always shows 2 encoders independent of the number of encoders selected)

Blue plastic enclosure Protects the Interface Board against mechanical impact and dust/particles


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