ICT/FCT Spring Test Probes · VF4
VF4 ICT/FCT Test Probe
VF4 is an ICT/FCT test probe series in the EMSGLOB range, listed under VF4. It suits a minimum pitch of 4.00 mm / 157 mil, has an overall length of 69.7 – 79.7 mm and offers 5 mm of working travel.
Its datasheet values are a rated current of 10 A, a typical resistance of 30 mΩ and an operating range of -45 °C to +100 °C. There are 62 catalogue part numbers in this series, covering 8 tip or head styles such as 05, 06, Spherical, 16. The plunger is beryllium copper with gold plating, and the barrel is brass with gold plating.

Specifications
| Structure | Basic Contact Probe |
|---|---|
| Pitch | 4.00 mm / 157 mil |
| Operating temperature | -45 °C to +100 °C |
| Barrel diameter | 3 mm |
| Press ring diameter | 3.6 mm |
| Collar diameter | 3.6 mm |
| Plunger material | Beryllium copper |
| Plunger plating | Gold |
| Barrel material | Brass |
| Barrel plating | Gold |
| Spring material | Spring steel |
| Spring plating | Gold |
| Nominal travel | 5 mm |
| Maximum travel | 5.5 mm |
| Pointing accuracy | ± 0.1 mm |
| Continuous current | 10 A |
| Typical contact resistance | 30 mΩ |
| Thread | M2,5X0,35 |
| Tool size | 2.5 mm |
| Total length (range) | 69.7 – 79.7 mm |
| Protrusion height (range) | 34.75 – 40.8 mm |
| Tip style diameter (range) | 1 – 4 mm |
| Preload (range) | 80 – 300 cN |
| Spring force (range) | 300 – 2500 cN |
| A – spade diameter (range) | 2.2 – 3.6 mm |
| B – spade width (range) | 0.8 – 1.8 mm |
| C – spade length (range) | 6 – 12 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 (62)
| Part number | Tip style | Tip style diameter | Spring force | Preload | Total length | Additional definition |
|---|---|---|---|---|---|---|
| VF405B230G15 | 05 | 2.3 mm | 1500 cN | 300 cN | 69.7 mm | – |
| VF405B230G20 | 05 | 2.3 mm | 2000 cN | 300 cN | 69.7 mm | – |
| VF405B300G15 | 05 | 3 mm | 1500 cN | 300 cN | 69.7 mm | – |
| VF405B300G20 | 05 | 3 mm | 2000 cN | 300 cN | 69.7 mm | – |
| VF406B240G10 | 06 | 2.4 mm | 1000 cN | 300 cN | 69.7 mm | – |
| VF406B240G15 | 06 | 2.4 mm | 1500 cN | 300 cN | 69.7 mm | – |
| VF406B240G25 | 06 | 2.4 mm | 2500 cN | 300 cN | 69.7 mm | – |
| VF406B300G05 | 06 | 3 mm | 500 cN | 100 cN | 69.7 mm | – |
| VF406B300G10 | 06 | 3 mm | 1000 cN | 300 cN | 69.7 mm | – |
| VF406B300G15 | 06 | 3 mm | 1500 cN | 300 cN | 69.7 mm | – |
| VF406B300G20 | 06 | 3 mm | 2000 cN | 300 cN | 69.7 mm | – |
| VF406B300G25 | 06 | 3 mm | 2500 cN | 300 cN | 69.7 mm | – |
| VF406B400G10 | 06 | 4 mm | 1000 cN | 300 cN | 69.7 mm | – |
| VF406B400G15 | 06 | 4 mm | 1500 cN | 300 cN | 69.7 mm | – |
| VF406B400G25 | 06 | 4 mm | 2500 cN | 300 cN | 69.7 mm | – |
| VF411B230G15 | 11 – Spherical | 2.3 mm | 1500 cN | 300 cN | 69.7 mm | – |
| VF416B100G15 | 16 | 1 mm | 1500 cN | 300 cN | 79.7 mm | – |
| VF416B140G15 | 16 | 1.4 mm | 1500 cN | 300 cN | 69.7 mm | – |
| VF416B140G20 | 16 | 1.4 mm | 2000 cN | 300 cN | 69.7 mm | – |
| VF416B140G25 | 16 | 1.4 mm | 2500 cN | 300 cN | 69.7 mm | – |
| VF416B180G05 | 16 | 1.8 mm | 500 cN | 100 cN | 69.7 mm | – |
| VF416B180G10 | 16 | 1.8 mm | 1000 cN | 300 cN | 69.7 mm | – |
| VF416B180G15 | 16 | 1.8 mm | 1500 cN | 300 cN | 69.7 mm | – |
| VF416B180G20 | 16 | 1.8 mm | 2000 cN | 300 cN | 69.7 mm | – |
| VF416B180G25 | 16 | 1.8 mm | 2500 cN | 300 cN | 69.7 mm | – |
| VF416B200G15 | 16 | 2 mm | 1500 cN | 300 cN | 69.7 mm | – |
| VF416B200G20 | 16 | 2 mm | 2000 cN | 300 cN | 69.7 mm | – |
| VF416B200G25 | 16 | 2 mm | 2500 cN | 300 cN | 69.7 mm | – |
| VF416B230G05 | 16 | 2.3 mm | 500 cN | 100 cN | 69.7 mm | – |
| VF416B230G15 | 16 | 2.3 mm | 1500 cN | 300 cN | 69.7 mm | – |
| VF416B230G20 | 16 | 2.3 mm | 2000 cN | 300 cN | 69.7 mm | – |
| VF416B230G25 | 16 | 2.3 mm | 2500 cN | 300 cN | 69.7 mm | – |
| VF417B300G10 | 17 | 3 mm | 1000 cN | 300 cN | 69.7 mm | – |
| VF417B300G15 | 17 | 3 mm | 1500 cN | 300 cN | 69.7 mm | – |
| VF417B300G20 | 17 | 3 mm | 2000 cN | 300 cN | 69.7 mm | – |
| VF417B300G25 | 17 | 3 mm | 2500 cN | 300 cN | 69.7 mm | – |
| VF417B400G10 | 17 | 4 mm | 1000 cN | 300 cN | 69.7 mm | – |
| VF417B400G15 | 17 | 4 mm | 1500 cN | 300 cN | 69.7 mm | – |
| VF417B400G25 | 17 | 4 mm | 2500 cN | 300 cN | 69.7 mm | – |
| VF422B0001G15 | 22 – Special version for contacting into conn.-housings | 3.15 mm | 1500 cN | 300 cN | 69.7 mm | – |
| VF483B0001G05 | 83 | 2.5 mm | 500 cN | 100 cN | 69.7 mm | – |
| VF483B0001G10 | 83 | 2.5 mm | 1000 cN | 300 cN | 69.7 mm | – |
| VF483B0001G15 | 83 | 2.5 mm | 1500 cN | 300 cN | 69.7 mm | – |
| VF483B0001G20 | 83 | 2.5 mm | 2000 cN | 300 cN | 69.7 mm | – |
| VF483B0002G05 | 83 | 3 mm | 500 cN | 100 cN | 69.7 mm | – |
| VF483B0002G15 | 83 | 3 mm | 1500 cN | 300 cN | 69.7 mm | – |
| VF483B0002G25 | 83 | 3 mm | 2500 cN | 300 cN | 69.7 mm | – |
| VF483B0003G15 | 83 | 2.25 mm | 1500 cN | 300 cN | 69.7 mm | – |
| VF483B0003G25 | 83 | 2.25 mm | 2500 cN | 300 cN | 69.7 mm | – |
| VF483B0004G10 | 83 | 3 mm | 1000 cN | 300 cN | 69.7 mm | – |
| VF483B0004G15 | 83 | 3 mm | 1500 cN | 300 cN | 69.7 mm | – |
| VF483B0004G20 | 83 | 3 mm | 2000 cN | 300 cN | 69.7 mm | – |
| VF483B0004G25 | 83 | 3 mm | 2500 cN | 300 cN | 69.7 mm | – |
| VF483B0005G20 | 83 | 2.25 mm | 2000 cN | 300 cN | 69.7 mm | – |
| VF483B0008G20 | 83 | 2.25 mm | 2000 cN | 300 cN | 69.7 mm | – |
| VF483B0009G15 | 83 | 2.2 mm | 1500 cN | 300 cN | 69.7 mm | – |
| VF483B0010G03 | 83 – SpadeØ > plungerØ | 2.5 mm | 300 cN | 80 cN | 75.7 mm | S1 |
| VF483B0010G05 | 83 – SpadeØ > plungerØ | 2.5 mm | 500 cN | 100 cN | 75.7 mm | S1 |
| VF483B0010G10 | 83 – SpadeØ > plungerØ | 2.5 mm | 1000 cN | 300 cN | 75.7 mm | – |
| VF483B0010G15 | 83 – SpadeØ > plungerØ | 2.5 mm | 1500 cN | 300 cN | 75.7 mm | S1 |
| VF483B0010G20 | 83 – SpadeØ > plungerØ | 2.5 mm | 2000 cN | 300 cN | 75.7 mm | – |
| VF483B0011G25 | 83 – SpadeØ > plungerØ | 3.6 mm | 2500 cN | 300 cN | 75.7 mm | – |
FAQ
What pitch and length is VF4?
VF4 has a pitch of 4.00 mm / 157 mil, total length of 69.7 – 79.7 mm and protrusion height of 34.75 – 40.8 mm. The full dimension list is in the specification table on this page.
How much current can VF4 carry?
The rated continuous current is 10 A, with a typical resistance of 30 mΩ.
Which part numbers and tip styles are available for VF4?
62 part numbers are listed, for example VF405B230G15, VF405B230G20, VF405B300G15. Tip or head styles include 05, 06, Spherical, 16, 17, Special version for contacting into conn.-housings. The table on this page lists every part number with its tip and spring data.
What temperature range is VF4 rated for?
VF4 is specified for -45 °C to +100 °C.
How do I get a price or sample for VF4?
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 VF4 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.