RF (Radio Frequency) Test Probes · Consumer
HF66 RF Test Probe
HF66 is an RF test probe series in the EMSGLOB range, listed under Consumer. It has an overall length of 26.1 – 45.6 mm and offers 0.8 – 4.2 mm of working travel.
Electrically it is specified for a rated current of 0.5 – 10 A. There are 17 catalogue part numbers in this series, covering 5 tip or head styles such as 05, 09, 50, 52.

Specifications
| Plunger material 2 | Beryllium copper |
|---|---|
| Plunger plating 2 | Gold |
| Impedance | 50 Ω |
| Total length (range) | 26.1 – 45.6 mm |
| Protrusion height (range) | 19.74 – 34 mm |
| Barrel diameter (range) | 2.95 – 9.5 mm |
| Tip style diameter (range) | 1.8 – 6.1 mm |
| Tip style diameter 2 (range) | 0.27 – 1.5 mm |
| Press ring diameter (range) | 3.8 – 20 mm |
| Collar diameter (range) | 3.8 – 20 mm |
| Preload (range) | 50 – 500 cN |
| Preload 2 (range) | 38 – 120 cN |
| Spring force (range) | 220 – 665 cN |
| Spring force 2 (range) | 100 – 210 cN |
| Nominal travel (range) | 0.8 – 4.2 mm |
| Nominal travel 2 (range) | 0.3 – 4 mm |
| Maximum travel (range) | 1.5 – 5.3 mm |
| Maximum travel 2 (range) | 0.8 – 4.5 mm |
| Continuous current (range) | 0.5 – 10 A |
| Continuous current 2 (range) | 0.1 – 3 A |
| Frequency (range) | 6 – 18 GHz |
| Inside/outside distance (range) | -1.7 – 7.25 mm |
| Tool size (range) | 3.5 – 8 mm |
Values as listed for this series. Confirm the exact data for your part number with your quotation.
Applications
- Automotive RF modules and connectors
- Consumer electronics with radio interfaces
- Industrial RF and high-frequency assemblies
- Contacting coaxial connectors in test fixtures

Part numbers (17)
| Part number | Tip style | Tip style diameter | Spring force | Preload | Total length | Nominal travel |
|---|---|---|---|---|---|---|
| HF66FAKRAm016G775MCXfF | 52 | 6.1 mm | 665 cN | 500 cN | 29.74 mm | 2 mm |
| HF66HSC016G480SMAfF | 05 | 2.6 mm | 360 cN | 240 cN | 32.8 mm | 2 mm |
| HF66HSCm016G540MSMPmF | HSC | 2.95 mm | 420 cN | 280 cN | 33.2 mm | 1.5 mm |
| HF66JSC016G480MSMPmS | 05 | 2.5 mm | 360 cN | 240 cN | 28.7 mm | 2 mm |
| HF66JSC016G640MSMPmS | 50 | 2.5 mm | 420 cN | 280 cN | 38.2 mm | 1.5 mm |
| HF66KSC016G540MSMPmF | 05 | 1.8 mm | 420 cN | 150 cN | 29.25 mm | 2 mm |
| HF66MHF-UFL016G540MSMPmF | 05 | 2.95 mm | 420 cN | 280 cN | 26.1 mm | 1.5 mm |
| HF66PSMPm016G500SMAfF | – | 4.6 mm | 400 cN | 150 cN | 34.5 mm | 2 mm |
| HF66SMPm0118G480SMAfF | 09 | 2.98 mm | 360 cN | 240 cN | 33.5 mm | 2 mm |
| HF66SMPm0118G480SMAfFOP | 09 | 2.98 mm | 360 cN | 240 cN | 33.5 mm | 2 mm |
| HF66SWD-F-G016G660SMAfF | 05 | 2.5 mm | 450 cN | 240 cN | 34.85 mm | 2 mm |
| HF66SWG016G340SMAfF | 05 | 2.7 mm | 220 cN | 140 cN | 35 mm | 1.5 mm |
| HF66SWG016G520SMAfF | 50 | 2.6 mm | 400 cN | 220 cN | 33.25 mm | 0.8 mm |
| HF66SWJ016G540MSMPmF | 05 | 1.8 mm | 420 cN | 150 cN | 28.2 mm | 2.2 mm |
| HF66UFL016G500SMAfF | – | 2.6 mm | 400 cN | 150 cN | 36.5 mm | 4 mm |
| HF66UFL016G520SMAf | 09 | 3 mm | 400 cN | 50 cN | 34.9 mm | 4.2 mm |
| HF66UFL018G620SMAfF | 05 | 4.2 mm | 500 cN | 300 cN | 45.6 mm | 1 mm |
FAQ
What pitch and length is HF66?
HF66 has a total length of 26.1 – 45.6 mm and protrusion height of 19.74 – 34 mm. The full dimension list is in the specification table on this page.
How much current can HF66 carry?
The rated continuous current is 0.5 – 10 A.
Which part numbers and tip styles are available for HF66?
17 part numbers are listed, for example HF66FAKRAm016G775MCXfF, HF66HSC016G480SMAfF, HF66HSCm016G540MSMPmF. Tip or head styles include 05, 09, 50, 52, HSC. The table on this page lists every part number with its tip and spring data.
How do I get a price or sample for HF66?
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 rf (radio frequency) test probes
Enquire / Request a quote
Tell us the HF66 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.