Model 600420 µHELIX^® Test Probes

Ordering Part Number	600420
Descriptive Model Name	S500*2440/400/30@200/S610f/S0a
material	tube & spring (body): 304SS Plunger: SS20AP tool steel i/o end: 304SS
length	body: 2440 µm (0.096 inches) plunger: 610 µm (0.024 inches)
Length Over All (LOA)	3,05 mm (0.120 inches)
alternate lengths in S500 Series (µHELIX® probes with 20 mil diameter)	3,05 mm LOA, S500*2440-P1 Group 3,74 mm LOA, S500*2440-P1 Group 5,10 mm LOA, S500*3800-P1 Group 6.50 mm LOA, Model 600462 7,10 mm LOA, S500*4500-P2 Group 8,25 mm LOA, S500*6350-P1 Group 10,15 mm LOA, S500*6350-P2 Group 10,40 mm LOA, S500*6600-P1 Group 14,10 mm LOA, S500*9500-P2 Group
diameter	body: 508 µm (0.020 inches) plunger: 356 µm (0.014 inches) i/o end: 508 µm (0.020 inches) i/o contact: 275 µm (0.011 inches;)
plunger tip shape: flat
alternate plunger tip shapes for S500*2440-P1 Group	Model 6000354 with sharp tip Model 600419 with round tip Model 600407 4-point crown tip
i/o contact: annular ring, 13 µm width
alternate i/o contact in S500*2440-P1 Group	Contact AlphaTest Corporation
spring type	rectangular helix integral to tube
spring force	30 grams (1.1 oz) at 200  µm
spring compliance	400 µm (0.016 inches) maximum 200 µm (0.008 inches) recommended
plating	body: 35 µinches Type II Gold plunger: 35 µinches Type II Gold
lubricant between plunger and probe body	none: gold on gold wiping contact
probe resistance	< 40 milliohms
μHELIX® spring life	> 106cycles
installed pointing accuracy	drill accuracy +/-20 µm (0.0008")
INSTALLATION NOTES:
probe-guide drill size	#74; 572 µm (0.0225")
plunger-guide drill size	1/64"; 397 µm (0.0156")
Recommended i/o end contact pad	=>254µm (0.010") Gold plated Minimum pad size 126µm (0.005")