Model 600621 µHELIX®Test Probes

Ordering Part Number	600621
Descrpitive Model Name	S500*2440/400/30@200/S610s/S-635a
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 Test-Probes	3,05 mm LOA, S500*2440-P1 Group  5,60 mm LOA, S500*3000-P2 Group  6,40 mm LOA, S500*3800-P1 Group  7,10 mm LOA, S500*4500-P2 Group  8,00 mm LOA, S500*5500-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
diameter>	body: 508 µm (0.020 inches) plunger: 356 µm (0.014 inches) i/o end: 432 µm (0.017 inches) last 635 µm i/o contact: 275 µm (0.011 inches;)
plunger tip shape: sharp, 90° cone
alternate plunger tip shapes for S500*2440-P1 Group	round, Model 600622 flat, Model 600623, 4-point crown, Model 600624
i/o contact: annular ring, 13 µm width
alternate i/o end configuration in S500*2440-P1 Group	Model 600354, S0a 600585, S-635c4
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 For other plating, contact AlphaTest.
lubricant between plunger and probe body	none: gold on gold wiping contact
probe resistance	< 30 milliohms
μHELIX® spring life	> 106cycles at recommended compliance
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")
capture plate drill size	#76; 508 µm (0.020")
Recommended i/o end contact pad	=>254µm (0.010") Gold plated Minimum pad size 126µm (0.005")