Product Details Portlet
Reliable operation that requires only a light touch.
W7ED Touch Sensor
Reliable operation that requires only a light touch.
Models equipped with anti-static FG terminals are also available.
- Suitable for embedding in equipment
- Enables touch sensor configurations to be created that suit your application. Touch electrodes and touch sensor electrodes can be fastened just using screws.
- Body-to-electrode static electricity transfers can easily be prevented using FG terminal models.
- Supports 5 to 15 VDC, with open-collector output.
RoHS Compliant
Note: This web page provides an excerpt from a datasheet. Refer to Product Datasheet and other applicable documents for more information.

Application Examples

Electrode shape | Appearance | FG terminal | Model |
---|---|---|---|
I-shaped | ![]() |
Without | W7ED-11F |
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With | W7ED-12F | |
L-shaped | ![]() |
Without | W7ED-11L |
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With | W7ED-12L |
■ Ratings and Specifications
※ ”Detected capacitance” refers to the detected capacitance value when capacitance is applied between the electrode and the ground terminal of the touch sensor circuit.
■ Output Circuit Diagram
■ Operation Chart
Detected capacitance * | 25±5pF | |
---|---|---|
Power supply voltage | 5 VDC (-10%) to 15 VDC (+10%) | |
Output | Open collector (max. output current: 10 mA) | |
Residual output voltage | 0.4 V max. | |
Operation mode | When detecting capacitance (human touch detected): Output transistor ON When not detecting capacitance (no human touch detected): Output transistor OFF |
|
Current consumption | 10 mA max. | |
Voltage influence | With rated supply voltage within a range of ±10% and a rate of change for detected capacitance within ±10% when powered using the rated supply voltage |
|
Temperature influence | Within an ambient temperature range when operating and a rate of change for detected capacitance within ±10% at +23°C | |
Ambient temperature | When in use: -10 to 60°C (no icing or condensation) When in storage: -20 to 70°C (no icing or condensation) |
|
Ambient humidity | 25 to 85%RH |
■ Output Circuit Diagram
FG terminal not provided
(W7ED-11F, W7ED-11L)
FG terminal provided
(W7ED-12F, W7ED-12L)
■ Operation Chart
Capacitance detection
Output transistor
W7ED-11F
Connector terminal No. | Terminal symbol | Name |
---|---|---|
1 | O | Output (OUT) |
2 | G | Ground (GND) |
3 | V | Power supply (VCC) |
- 2. Compatible housings for connector include 51021-03□□ series models from Molex.
- 3. The Lot No. is 4-digit number located at the position indicated in the figure.
- * Tolerance class IT16 applies to dimensions in this datasheet unless otherwise specified.
W7ED-12F
Connector terminal No. | Terminal symbol | Name |
---|---|---|
1 | O | Output (OUT) |
2 | G | Ground (GND) |
3 | FG | Frame ground (FG) |
4 | V | Power supply (VCC) |
- 2. Compatible housings for connector include 51021-04□□ series models from Molex.
- 3. The Lot No. is 4-digit number located at the position indicated in the figure.
- *Tolerance class IT16 applies to dimensions in this datasheet unless otherwise specified.
W7ED-11L
Connector terminal No. | Terminal symbol | Name |
---|---|---|
1 | O | Output (OUT) |
2 | G | Ground (GND) |
3 | V | Power supply (VCC) |
- 2. Compatible housings for connector include 51021-03□□ series models from Molex.
- 3. The Lot No. is 4-digit number located at the position indicated in the figure.
- * Tolerance class IT16 applies to dimensions in this datasheet unless otherwise specified.
W7ED-12L
Connector terminal No. | Terminal symbol | Name |
---|---|---|
1 | O | Output (OUT) |
2 | G | Ground (GND) |
3 | FG | Frame ground (FG) |
4 | V | Power supply (VCC) |
- 2. Compatible housings for connector include 51021-04□□ series models from Molex.
- 3. The Lot No. is 4-digit number located at the position indicated in the figure.
- *Tolerance class IT16 applies to dimensions in this datasheet unless otherwise specified.
Please read the matters of agreement when ordering
- How to use
By connecting and fastening this electrode to a touch electrode (conductive material made from metal or with a metallic plating), a touch sensor configuration can be created with specifications that suit your application. The electrode features a hole that enables it to be fastened with a screw, etc. - FG terminals
Static electricity from the human body, etc., is capable of entering the touch sensor via its electrode. When anti-static measures are required, select a model (W7ED-12F or W7ED-12L) with an FG terminal, which acts as a discharge circuit for static electricity. To enhance the anti-static effects of the FG terminal, we recommend connecting the FG terminal to a stable potential on the device’s frame ground using a thick, short wire.
Precautions for Correct Use
- Use a touch electrode made of conductive metal or metal-plated material.
- Make sure to insulate touch electrode and electrode of this product from external grounds.
- The level of capacitance normally applied will depend on conditions such as the size of the touch electrode or the existence of metal around the touch electrode. Make sure to confirm that the touch sensor operates by applying human touch to the touch electrode with the touch electrode secured in place while in contact with the electrode of this product.
- Avoid use in locations subject to direct contact with liquids such as water. Failure to do so will result in malfunction.