microHELIX Test Probes your fine-pitch connection

Model 600255 Test Probe



Model 600255 µHELIX®

Ordering Part Number 600255
Descriptive Model Name S500*3800/700/70@350/S1300f/S0a
material Plunger: SS20AP tool steel
tube & spring (body): 304SS
i/o end: 304SS
length plunger: 1300 µm (0.051 inches)
body: 3800 µm (0.150 inches)
Length Over All (LOA) 5,10 mm (0.201 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: 254 µm x 20 µm wide annular ring
plunger tip shape: flat plunger tip
alternate plunger tip shapes Model 600253 wih sharp tip
Model 600254 with round tip
Model 600365 with 4-point crown
i/o probe-end shape: annular ring i/o end
alternate i/o end contact Contact
spring type rectangular helix integral to tube
typical spring force 70 grams (3.15 oz) at 350  µm (0.14")
alternate spring force Model 600264
spring compliance 700 µm (0.028") maximum
350 µm (0.014") recommended
plating body: 35 µinches Type II Au over Ni flash
plunger: 35 µinches Type II Au over Ni flash
lubricant between plunger and probe body none: gold on gold wiping contact
probe resistance < 30 milliohms
µHELIX® spring life > 106cycles
installed pointing accuracy drill accuracy ±20 µm (0.0008")
probe-guide drill size #74; 572 µm (0.0225")
plunger-guide drill size 1/64"; 397 µm (0.0156")

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