Switch Probes · Rolling ball head
F888 Switch Probe
F888 is a switch probe series in the EMSGLOB range, listed under Rolling ball head. It has an overall length of 19.9 – 26.3 mm and offers 1 – 1.5 mm of working travel.
Its datasheet values are a rated current of 1 – 5 A and a typical resistance of 25 mΩ. There are 6 catalogue part numbers in this series, covering 1 tip or head style such as Rolling ball. The plunger is steel with uncoated plating, and the barrel is brass with gold plating.

Specifications
| Structure | Basic Contact Probe |
|---|---|
| Tip style | 90 – Rolling ball |
| Plunger material | Steel |
| Plunger plating | Uncoated |
| Barrel material | Brass |
| Barrel plating | Gold |
| Typical contact resistance | 25 mΩ |
| Total length (range) | 19.9 – 26.3 mm |
| Protrusion height (range) | 1.4 – 18.7 mm |
| Barrel diameter (range) | 5 – 7 mm |
| Tip style diameter (range) | 4 – 6 mm |
| Press ring diameter (range) | 6.35 – 8.4 mm |
| Collar diameter (range) | 6.35 – 8.4 mm |
| Preload (range) | 70 – 150 cN |
| Spring force (range) | 100 – 200 cN |
| Nominal travel (range) | 1 – 1.5 mm |
| Maximum travel (range) | 1 – 1.5 mm |
| Continuous current (range) | 1 – 5 A |
| Continuous current 2 (range) | 1 – 5 A |
| Switch travel (range) | 0.5 – 0.8 mm |
| Tool size | 5 mm |
Values as listed for this series. Confirm the exact data for your part number with your quotation.
Applications
- Presence and position checks in test fixtures
- Detecting components, connectors and housings
- Normally open (NO) and normally closed (NC) switching
- Pneumatic and position-sensing fixture designs

Part numbers (6)
| Part number | Tip style diameter | Spring force | Preload | Total length | Nominal travel | Continuous current |
|---|---|---|---|---|---|---|
| F88890S0003U100S05 | 5 mm | 100 cN | 70 cN | 19.9 mm | 1.4 mm | 5 A |
| F88890S0003U100S08 | 5 mm | 100 cN | 70 cN | 19.9 mm | 1.4 mm | 5 A |
| F88890S1003U100S05 | 5 mm | 100 cN | 70 cN | 19.9 mm | 1.4 mm | 5 A |
| F88890S1101U200S05 | 4 mm | 200 cN | 150 cN | 26.3 mm | 1 mm | 1 A |
| F88890S1102U100S07 | 6 mm | 100 cN | 70 cN | 20.95 mm | 1.5 mm | 1 A |
| F88890S1103U200S05 | 4 mm | 200 cN | 150 cN | 26.3 mm | 1 mm | 1 A |
FAQ
What pitch and length is F888?
F888 has a total length of 19.9 – 26.3 mm and protrusion height of 1.4 – 18.7 mm. The full dimension list is in the specification table on this page.
How much current can F888 carry?
The rated continuous current is 1 – 5 A, with a typical resistance of 25 mΩ.
Which part numbers and tip styles are available for F888?
6 part numbers are listed, for example F88890S0003U100S05, F88890S0003U100S08, F88890S1003U100S05. Tip or head styles include Rolling ball. The table on this page lists every part number with its tip and spring data.
How do I get a price or sample for F888?
Send the part number, quantity and your application to sales@emsglob.com or call +91-7383235369, or use the enquiry form on the contact page. Prices are quoted per enquiry.
More switch probes
Enquire / Request a quote
Tell us the F888 part number, the quantity and your pitch, travel and current requirements, and the EMSGLOB team will reply with availability and a quotation. Drawings in STEP, IGES, PDF, DWG, DXF or ZIP are welcome.