ICT/FCT Spring Test Probes
Series 21 ICT/FCT Test Probe
Series 21 is an ICT/FCT test probe series in the EMSGLOB range. It works at a pitch down to 2.54 mm / 100 mil, has an overall length of 24.7 mm and offers 2.7 mm of working travel.
On the electrical side you get a rated current of 3 A, a typical resistance of 25 mΩ and an operating range of -55 °C to +120 °C. There are 80 catalogue part numbers in this series, covering 15 tip or head styles such as Spherical head (Steel), 4-pronged inner and outer crown, Triangular pyramid 90°, Mini crown 60° (Steel). Matching receptacle / compatible series: S 21.
Specifications
| Minimum pitch | 2.54 mm / 100 mil |
|---|---|
| Total length | 24.7 mm |
| Installation height | 6 mm |
| Rated travel | 2.7 mm |
| Max. travel | 4 mm |
| Rated current | 3 A |
| Typical resistance | 25 mΩ |
| Operating temperature | -55 °C to +120 °C |
| Compatible with | S 21 |
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 (80)
| Part number | Tip / head style | Head Ø (mm) | Spring force (N) |
|---|---|---|---|
| 21.02.10.10 | Widened (code 02) | 1 | 1 |
| 21.03.10.10 | Stepped (code 03) | 1 | 1 |
| 21.03.10.18 | Stepped (code 03) | 1 | 1.8 |
| 21.03.10.25 | Stepped (code 03) | 1 | 2.5 |
| 21.03.15.10 | Stepped (code 03) | 1.5 | 1 |
| 21.03.15.18 | Stepped (code 03) | 1.5 | 1.8 |
| 21.03.15.25 | Stepped (code 03) | 1.5 | 1.8 |
| 21.03.18.10 | Stepped (code 03) | 1.8 | 1 |
| 21.03.18.18 | Stepped (code 03) | 1.8 | 1.8 |
| 21.03.18.25 | Stepped (code 03) | 1.8 | 2.5 |
| 21.04.10.10 | Concave head 90° (code 04) | 1 | 1 |
| 21.04.10.18 | Concave head 90° (code 04) | 1 | 1.8 |
| 21.04.10.25 | Concave head 90° (code 04) | 1 | 1.5 |
| 21.04.15.10 | Concave head 90° (code 04) | 1.5 | 1 |
| 21.04.15.18 | Concave head 90° (code 04) | 1.5 | 1.8 |
| 21.04.15.25 | Concave head 90° (code 04) | 1.5 | 2.5 |
| 21.04.18.10 | Concave head 90° (code 04) | 1.8 | 1 |
| 21.04.18.18 | Concave head 90° (code 04) | 1.8 | 1.8 |
| 21.04.18.25 | Concave head 90° (code 04) | 1.8 | 2.5 |
| 21.05.06H600.10 | Spherical head (code 05) | 0.6 | 1 |
| 21.05.07.15 | Spherical head (Steel) (code 105) | 0.7 | 1.5 |
| 21.05.10.10 | Spherical head (code 05) | 1 | 1 |
| 21.05.10.12 | Spherical head (code 05) | 1 | 1.2 |
| 21.05.10.18 | Spherical head (code 05) | 1 | 1.8 |
| 21.05.10.25 | Spherical head (code 05) | 1 | 2.5 |
| 21.05.12.06 | Spherical head (code 05) | 1.2 | 1 |
| 21.05.12.10 | Spherical head (code 05) | 1.2 | 1 |
| 21.05.12.18 | Spherical head (code 05) | 1.2 | 1.8 |
| 21.05.13.11 | Spherical head (code 05) | 1.3 | 1.1 |
| 21.05.13.20 | Spherical head (code 05) | 1.3 | 2 |
| 21.05.15.10 | Spherical head (code 05) | 1.5 | 1 |
| 21.05.15.18 | Spherical head (code 05) | 1.5 | 1.8 |
| 21.05.15.25 | Spherical head (code 05) | 1.5 | 2.5 |
| 21.05.18.10 | Spherical head (code 05) | 1.8 | 1 |
| 21.05.18.18 | Spherical head (code 05) | 1.8 | 1.8 |
| 21.05.18.25 | Spherical head (code 05) | 1.8 | 2.5 |
| 21.06.10.10 | 4-point crown 60° (code 06) | 1 | 1 |
| 21.06.10.18 | 4-point crown 60° (code 06) | 1 | 1.8 |
| 21.06.10.25 | 4-point crown 60° (code 06) | 1 | 2.5 |
| 21.06.15.10 | 4-point crown 60° (code 06) | 1.5 | 1 |
| 21.06.15.18 | 4-point crown 60° (code 06) | 1.5 | 1.8 |
| 21.06.15.25 | 4-point crown 60° (code 06) | 1.5 | 2.5 |
| 21.08.15.10 | Serrated head (code 08) | 1.5 | 1 |
| 21.08.15.18 | Serrated head (code 08) | 1.5 | 1.8 |
| 21.08.15.25 | Serrated head (code 08) | 1.5 | 2.5 |
| 21.08.18.10 | Serrated head (code 08) | 1.8 | 1 |
| 21.08.18.18 | Serrated head (code 08) | 1.8 | 1.8 |
| 21.08.18.25 | Serrated head (code 08) | 1.8 | 2.5 |
| 21.08.19.10 | Serrated head (code 08) | 1.9 | 1 |
| 21.08.19.18 | Serrated head (code 08) | 1.9 | 1.8 |
| 21.08.19.25 | Serrated head (code 08) | 1.9 | 2.5 |
| 21.08.19.28 | Serrated head (code 08) | 1.9 | 2.8 |
| 21.09.15.10 | 6-sided chisel 90° (code 09) | 1.5 | 1 |
| 21.09.15.18 | 6-sided chisel 90° (code 09) | 1.5 | 1.8 |
| 21.09.15.25 | 6-sided chisel 90° (code 09) | 1.5 | 2.5 |
| 21.09.18.10 | 6-sided chisel 90° (code 09) | 1.8 | 1 |
| 21.09.18.18 | 6-sided chisel 90° (code 09) | 1.8 | 1.8 |
| 21.09.18.25 | 6-sided chisel 90° (code 09) | 1.8 | 2.5 |
| 21.09.19.18 | 6-sided chisel 90° (code 09) | 1.9 | 1.8 |
| 21.102.10.10 | Sharp tip (Steel) (code 102) | 1 | 1 |
| 21.102.10.18 | Sharp tip (Steel) (code 102) | 1 | 1.8 |
| 21.102.10.25 | Sharp tip (Steel) (code 102) | 1 | 2.5 |
| 21.103.15.18 | Flat head (Steel) (code 103) | 1.5 | 1.8 |
| 21.105.08.30 | Spherical head (Steel) (code 105) | 0.8 | 3 |
| 21.109.19.23 | 6-sided chisel 90° (Steel) (code 109) | 1.9 | 2.3 |
| 21.15.15.10 | Conical point 90° (code 15) | 1.5 | 1 |
| 21.15.15.18 | Conical point 90° (code 15) | 1.5 | 1.8 |
| 21.15.15.25 | Conical point 90° (code 15) | 1.5 | 2.5 |
| 21.15.19.11 | Conical point 90° (code 15) | 1.9 | 1.1 |
| 21.15.19.20 | Conical point 90° (code 15) | 1.9 | 2 |
| 21.166.05.10 | Mini crown 60° (Steel) (code 166) | 0.5 | 1 |
| 21.166.05.25 | Mini crown 60° (Steel) (code 166) | 0.5 | 2.5 |
| 21.20.15.10 | Triangular pyramid 90° (code 20) | 1.5 | 1 |
| 21.20.15.18 | Triangular pyramid 90° (code 20) | 1.5 | 1.8 |
| 21.20.15.25 | Triangular pyramid 90° (code 20) | 1.5 | 2.5 |
| 21.20.18.10 | Triangular pyramid 90° (code 20) | 1.8 | 1 |
| 21.20.18.18 | Triangular pyramid 90° (code 20) | 1.8 | 1.8 |
| 21.20.18.25 | Triangular pyramid 90° (code 20) | 1.8 | 2.5 |
| 21.20.19.11 | Triangular pyramid 90° (code 20) | 1.9 | 1.1 |
| 21.36.15.20 | 4-pronged inner and outer crown (code 36) | 1.5 | 2 |
Tip and head styles
FAQ
What pitch and length is Series 21?
Series 21 has a minimum pitch of 2.54 mm / 100 mil, total length of 24.7 mm and installation height of 6 mm. The full dimension list is in the specification table on this page.
How much current can Series 21 carry?
The rated continuous current is 3 A, with a typical resistance of 25 mΩ.
Which part numbers and tip styles are available for Series 21?
80 part numbers are listed, for example 21.02.10.10, 21.03.10.10, 21.03.10.18. Tip or head styles include Spherical head (Steel), 4-pronged inner and outer crown, Triangular pyramid 90°, Mini crown 60° (Steel), Conical point 90°, 6-sided chisel 90° (Steel). The table on this page lists every part number with its tip and spring data.
Which receptacle or series fits Series 21?
Series 21 is listed as compatible with S 21.
How do I get a price or sample for Series 21?
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 Series 21 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.