ICT/FCT Spring Test Probes · 50 mil
F788 ICT/FCT Test Probe
F788 is an ICT/FCT test probe series in the EMSGLOB range, listed under 50 mil. It suits a minimum pitch of 1.27 mm / 50 mil, measures 43 – 45 mm in total length and offers 4.3 – 6.4 mm of working travel.
Its datasheet values are a rated current of 2 A, a typical resistance of 20 mΩ and an operating range of -45 °C to +80 °C. There are 11 catalogue part numbers in this series, covering 8 tip or head styles such as Concave stepped, Serrated stepped, Hexagonal 90° stepped, Spherical. The barrel is bronze with gold plating.

Specifications
| Structure | Basic Contact Probe |
|---|---|
| Pitch | 1.27 mm / 50 mil |
| Operating temperature | -45 °C to +80 °C |
| Barrel diameter | 0.78 mm |
| Barrel material | Bronze |
| Barrel plating | Gold |
| Spring material | Spring steel |
| Spring plating | Silver |
| Preload | 30 cN |
| Pointing accuracy | ± 0.1 mm |
| Continuous current | 2 A |
| Typical contact resistance | 20 mΩ |
| Total length (range) | 43 – 45 mm |
| Protrusion height (range) | 12 – 14 mm |
| Tip style diameter (range) | 0.5 – 0.9 mm |
| Spring force (range) | 150 – 180 cN |
| Nominal travel (range) | 4.3 – 6.4 mm |
| Maximum travel (range) | 6.4 – 7 mm |
Values as listed for this series. Confirm the exact data for your part number with your quotation.
Applications
- In-circuit testing (ICT) of assembled PCBs
- Functional testing (FCT) of modules and finished boards
- Bed-of-nails test fixtures and adapters
- Contacting pads, vias, pins and wire-wrap posts
- Threaded, push-back and anti-rotation designs for special fixture layouts

Part numbers (11)
| Part number | Tip style | Tip style diameter | Spring force | Total length | Nominal travel | Plunger material |
|---|---|---|---|---|---|---|
| F78805B090G165 | 05 – Concave stepped | 0.9 mm | 165 cN | 43 mm | 6.4 mm | Beryllium copper |
| F78806B090G165 | 06 – Serrated stepped | 0.9 mm | 165 cN | 43 mm | 6.4 mm | Beryllium copper |
| F78807S090L165 | 07 – Hexagonal 90° stepped | 0.9 mm | 165 cN | 43 mm | 6.4 mm | Steel |
| F78811B060G165 | 11 – Spherical | 0.6 mm | 165 cN | 43 mm | 6.4 mm | Beryllium copper |
| F78818B060G165 | 18 – Conical 30° | 0.6 mm | 165 cN | 43 mm | 6.4 mm | Beryllium copper |
| F78821S060L165 | 21 – 4-point crown (self-cleaning) | 0.6 mm | 165 cN | 43 mm | 6.4 mm | Steel |
| F78833S050L150LS1 | 33 – Square lance 38° | 0.5 mm | 150 cN | 45 mm | 4.3 mm | Steel |
| F78833S050L165 | 33 – Square lance 38° | 0.5 mm | 165 cN | 43 mm | 6.4 mm | Steel |
| F78833S050L165L | 33 – Square lance 38° | 0.5 mm | 165 cN | 45 mm | 6.4 mm | Steel |
| F78833S060L165 | 33 – Square lance 38° | 0.6 mm | 165 cN | 43 mm | 6.4 mm | Steel |
| F78843S050L180 | 43 – Square lance 90° | 0.5 mm | 180 cN | 43 mm | 6.4 mm | Steel |
FAQ
What pitch and length is F788?
F788 has a pitch of 1.27 mm / 50 mil, total length of 43 – 45 mm and protrusion height of 12 – 14 mm. The full dimension list is in the specification table on this page.
How much current can F788 carry?
The rated continuous current is 2 A, with a typical resistance of 20 mΩ.
Which part numbers and tip styles are available for F788?
11 part numbers are listed, for example F78805B090G165, F78806B090G165, F78807S090L165. Tip or head styles include Concave stepped, Serrated stepped, Hexagonal 90° stepped, Spherical, Conical 30°, 4-point crown (self-cleaning). The table on this page lists every part number with its tip and spring data.
What temperature range is F788 rated for?
F788 is specified for -45 °C to +80 °C.
How do I get a price or sample for F788?
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 ict/fct spring test probes
Enquire / Request a quote
Tell us the F788 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.