General Purpose Test Probes > Medium Reach > PA4 Series >

A medium reach, general purpose test probe for testing at a minimum of 2.54mm centres

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
283g (10.0oz)
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


See receptacles at bottom of page

For pricing, availability or to place an order
click on a part no.

Tip Style

CONCAVE HEAD - 8 amps max.

CONCAVE HEAD - 8 amps max.
PA4AL Extra light spring  PA4AS Light spring  
PA4AX Heavy spring  PA4AU Ultra Heavy spring  

Tip Style

CONCAVE HEAD

CONCAVE HEAD
PA4AS-2.0 Light spring  PA4AX-2.0 Heavy spring  

Tip Style

SPEAR POINT - 8 amps max.

SPEAR POINT - 8 amps max.
PA4BS Light spring  PA4BX Heavy spring  
PA4BE Extra heavy spring  PA4BU Ultra Heavy spring  

Tip Style

DOME HEAD

DOME HEAD
PA4DS Light spring  PA4DX Heavy spring  

Tip Style

FLAT HEAD 1.5mm - 3 amps max.

FLAT HEAD 1.5mm - 3 amps max.
PA4FS Light spring  PA4FX Heavy spring  

Tip Style

SERRATED HEAD 1.5mm - 8 amps max.

SERRATED HEAD 1.5mm - 8 amps max.
PA4HS Light spring   PA4HX Heavy spring  
PA4HE Extra heavy spring   PA4HU Ultra heavy spring  

Tip Style

SERRATED HEAD 2.0mm - 3 amps max.

SERRATED HEAD 2.0mm - 3 amps max.
PA4HS-080 Light spring  PA4HX-080 Heavy spring  

Tip Style

SERRATED HEAD 2.5mm - 3 amps max.

SERRATED HEAD 2.5mm - 3 amps max.
PA4HS-100 Light spring   PA4HX-100 Heavy spring  

Tip Style

SERRATED HEAD 3mm - 3 amps max.

SERRATED HEAD 3mm - 3 amps max.
PA4HS-120 Light spring  PA4HX-120 Heavy spring  

Tip Style

SERRATED HEAD 4.0mm - 3 amps max.

SERRATED HEAD 4.0mm - 3 amps max.
PA4HS-160 Light spring   PA4HX-160 Heavy spring  

Tip Style

REDUCED RADIUS - 8 amps max. (for connector applications)

REDUCED RADIUS - 8 amps max. (for connector applications)
PA4JS-064 Light spring  PA4JL-064 Extra light spring  
PA4JX-064 Heavy spring  PA4JU-064 Ultra heavy spring  

Tip Style

PLAIN RADIUS- 3 amps max.

PLAIN RADIUS- 3 amps max.
PA4JS Light spring  PA4JX Heavy spring  
PA4JU Ultra Heavy spring   

Tip Style

PLAIN FLAT

PLAIN FLAT
PA4CS Light spring  PA4CX Heavy spring  

Tip Style

0.5mm SMALL CROWN - 8 amps max.

0.5mm SMALL CROWN - 8 amps max.
PA4QS-018 Light spring   PA4QX-018 Heavy spring  
PA4QU-018 Ultra heavy spring    

Tip Style

0.9mm PLAIN CROWN - 8 amps max.

0.9mm PLAIN CROWN - 8 amps max.
PA4QPS-040 Light spring   PA4QPX-040 Heavy spring  
PA4QPE-040 Extra heavy spring   PA4QPU-040 Ultra heavy spring  

Tip Style

1.3mm CROWN - 8 amps max.

1.3mm CROWN - 8 amps max.
PA4QS-050 Light spring   PA4QX-050 Heavy spring  
PA4QU-050 Ultra heavy spring   PA4QE-050 Extra heavy spring  

Tip Style

1.5mm CROWN - 3 amps max.

1.5mm CROWN - 3 amps max.
PA4QS-060 Light spring   PA4QX-060 Heavy spring  

Tip Style

2.00mm crown head

2.00mm crown head
PA4QS-080 Light spring   PA4QX-080 Heavy spring  

Tip Style

8 POINT CROWN HEAD - 8 amps max.

8 POINT CROWN HEAD - 8 amps max.
PA4ZX Heavy spring   PA4ZE Extra Heavy spring  
PA4ZS Light spring   PA4ZU Ultra Heavy spring  

Tip Style

SHARP PYRAMID - 8 amps max.

SHARP PYRAMID - 8 amps max.
PA4TS-041 Light spring   PA4TX-041 Heavy spring  
PA4TE-041 Extra heavy spring   PA4TU-041 Ultra heavy spring  

Tip Style

1.5mm PYRAMID HEAD

1.5mm PYRAMID HEAD
PA4TS Light spring   PA4TX Heavy spring  

Tip Style

2.0mm PYRAMID HEAD

2.0mm PYRAMID HEAD
PA4TS-2.0 Light spring   PA4TX-2.0 Heavy spring  

Tip Style

2.5mm PYRAMID HEAD Heavy spring

2.5mm PYRAMID HEAD Heavy spring

PA4TX-2.5

Tip Style

3.5mm PYRAMID HEAD Heavy spring

3.5mm PYRAMID HEAD Heavy spring

PA4TX-3.5

Receptacle

CRIMP

CRIMP

RA4C

Receptacle

SOLDER-IN

SOLDER-IN

RA4P

Receptacle

SOLDER CUP - PRESS RING

SOLDER CUP - PRESS RING

RA4S12

Receptacle

SOLDER CUP - Stop collar

SOLDER CUP - Stop collar

RA4SF

Receptacle

SOLDER CUP

SOLDER CUP

RA4S

Receptacle

WIRE-WRAP

WIRE-WRAP

RA4W