Model 600228 µHELIX® Test Probes
| Ordering Part Number | 600228 |
| Descriptive Model Name | S400*3800/900/30@450/S1300f.Au/S0a.Au |
| material | body (tube & coil component): 304SS Plunger: SS20AP Steel i/o end: SS20AP Steel |
| length | body: 3800 µm (0.15 inches) Plunger: 1300 µm (0.051 inches) i/o end: 0 µm (0 inches) |
| Length Over All (LOA) | 5100 µm (0.201 inches) |
| alternate lengths | Inquire to AlphaTest for other plunger/i/o end lengths) |
| diameter | body: 406 µm (0.016 inches) Plunger: 320 µm (0.016 inches) i/o end: 406 µm (0.016 inches) |
| plunger tip shape | flat |
| pin2 tip shape | annular |
| alternate plunger & i/o end tip shapes | See Probe Group S400*3800-P1 or contact AlphaTest |
| spring type | rectangular helix integral to tube |
| spring force | 30 grams at 450 µm (1.1 oz@0.018) inches |
| spring compliance | 900 µm (0.035 inches) maximum 450 µm (0.018 inches) recommended |
| plating | body: 35 µinches Type II Gold plunger & i/o end: 35 µinches Type II Gold Contact AlphaTest for other plating. |
| lubricant between plunger and probe body | none: gold on gold wiping contact |
| probe resistance | < 60 milliohms |
| continuous current | > 2 Amps |
| µHELIX® spring life | > 106cycles at recommended compression |
| installed pointing accuracy | drill accuracy ±20 µm (0.0008 inch) |
| INSTALLATION NOTES: | |
| probe-guide drill size | #77; 457 µm (0.018 inches) |
| plunger-guide drill size | #80; 343 µm (0.0135 inches) |
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