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ATE Test Probes > PA4 & ST-PA4 Series >


2.54mm / 0.10" test centres

The PA4 Series is the universal size for use at 2.54mm test centres in the majority of ATE test fixtures. It has a very wide range of tip styles for almost all test targets. Additionally, a wide choice of spring forces is available. The ST-PA4 series adds hardened steel tips which ensure an exceptional resistance to wear in high volume PCB production runs. The LF-PA4 series has hardened tips, extra resilient plated surfaces and an enhanced pre-loaded spring pressure to enable good penetration of the tough residual contamination often found on the surface of many lead-free solders.

Test Probe Specification

Full travel
6.35mm (.250")
Working travel
4.24mm (.167")
Spring force
at wkg travel
'L' Extra light spring
57g (2.0oz)
'S' Light spring
114g (4.0oz)
'X' Heavy spring
170g (6.0oz)
'E' Extra heavy
227g (8.0oz)
'U' Ultra heavy spring
283g (10.0oz)
'W' Ultra heavy spring
350g (12.0oz)
Current rating DC (max)
cont shown with tip style
Minimum test centres
2.54mm (.100")

Receptacle Specification

Mounting hole size: 1.7/1.75mm.
1.75mm drill is most commonly used:
Drill part no. DA3. RIT tool part no. TA3, TA4A

How to Use

Tip Style - STEEL CROSS BLADE H spring
The diagram below shows the tipstyle to this part no..


Qty Price each ex VAT
< 50
50 - up
100 - up
250 - up
500 - up
1000 - up
3000 - up
5000 - up
> 10000

Available ex stock: 40
Lead time for additional qty: 12 days


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