ATE Test Probes >

For contacting loaded PCBs in automatic test equipment (ATE) with vacuum, pneumatic or mechanically operated fixtures. Available in 2.54mm, 1.91mm & 1.27mm test centre spacings.

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


View all tipstyles , receptacles and lead-free solder tipstyles in this series

LPA2 & ST-LPA2 Series

1.91mm / 0.075" test centres

The LPA2 Series is the universal size for use at 1.91mm 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-LPA2 series adds hardened steel tips which ensure an exceptional resistance to wear in high volume PCB production runs. The LF-LPA2 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
'S' Light spring
114g (4.0oz)
'X' Heavy spring
170g (6.0oz)
'U' Ultra heavy spring
227g (8.0oz)
'W' Ultra heavy spring
283g (10.0oz)
Current rating DC (max)
6 amps
Minimum test centres
1.91mm (.075")


Receptacle Specification

Mounting hole size: 1.35/1.4mm.
1.4mm drill is most commonly used:
Drill part no. DA2. RIT tool part no. TA2,TA2A

How to Use


View all tipstyles , receptacles and lead-free solder tipstyles in this series

LPC1 & ST-LPC1 Series

1.27mm / 0.050" test centre

The LPC1 Series is the universal size for use at 1.27mm 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-LPC1 series adds hardened steel tips which ensure an exceptional resistance to wear in high volume PCB production runs. The LF-LPC1 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
'S' Light spring
114g (4.0oz)
'X' Heavy spring
170g (6.0oz)
'U' Ultra heavy spring
227g (8oz)
Minimum test centres
1.27mm (.050")


Receptacle Specification

Mounting hole size: 0.97/0.99mm.
0.95mm drill is most commonly used:
Drill part no. DRC1. RIT tool part no. TC1A, TRC1

How to Use


View all tipstyles , receptacles and lead-free solder tipstyles in this series