microHELIX Test Probes your fine-pitch connection

Model 600253 Test Probe



Model 600254 µHELIX®

Ordering Part Number 600254
Descriptive Model Name S500*3800/700/70@350/S1300r/S0a
material tube/spring (body): 304SS
Plunger: SS20AP tool steel
i/o end: 304SS
length body: 3800 µm (0.150 inches)
plunger: 1300 µm (0.051 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: 508 µm (0.020"
i/o contact: annular ring ø=275 µm
plunger tip shape: rounded plunger tip
alternate plunger tip shapes Model 600253 with sharp tip
Model 600255 with flat tip
Model 600365 4-point crown
i/o contact shape: annular ring i/o end
alternate i/o ends Contact
spring type rectangular helix integral to tube
typical spring force 70 grams (3.15 oz) at 350  µm (0.014")
alternate spring force Model 600253
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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