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.

Tip Style CONCAVE HEAD - 8 amps max. / -55 to +150°C PA4AS Light spring  PA4AU Ultra Heavy spring   PA4AL Extra light spring   PA4AX Heavy spring	Tip Style CONCAVE HEAD Light spring PA4AS
Tip Style CONCAVE HEAD Extra light spring PA4AL	Tip Style CONCAVE HEAD Heavy spring PA4AX
Tip Style CONCAVE HEAD Ultra heavy spring PA4AU	Tip Style CONCAVE HEAD STEEL - 8 amps max. ST-PA4AU Ultra Heavy spring    ST-PA4AS Light spring   ST-PA4AX Heavy spring
Tip Style CONCAVE HEAD STEEL - Light spring ST-PA4AS	Tip Style CONCAVE HEAD STEEL - Heavy spring ST-PA4AX
Tip Style CONCAVE HEAD STEEL - Ultra heavy spring ST-PA4AU	Tip Style SPEAR POINT - 8 amps max. / -55 to +150°C PA4BE Extra heavy spring  PA4BU Ultra Heavy spring   PA4BS Light spring   PA4BX Heavy spring
Tip Style SPEAR POINT Light spring PA4BS	Tip Style SPEAR POINT - Extra heavy spring PA4BE
Tip Style SPEAR POINT Heavy spring PA4BX	Tip Style SPEAR POINT Ultra Heavy spring PA4BU
Tip Style SPEAR POINT STEEL - 8 amps max. ST-PA4BX Heavy spring  ST-PA4BU Ultra Heavy spring   ST-PA4BS Light spring   ST-PA4BE Extra Heavy spring	Tip Style SPEAR POINT STEEL Light spring ST-PA4BS
Tip Style SPEAR POINT STEEL Heavy spring ST-PA4BX	Tip Style SPEAR POINT STEEL Extra heavy spring ST-PA4BE
Tip Style SPEAR POINT STEEL Ultra heavy spring ST-PA4BU	Tip Style FLAT HEAD 1.5mm - 3 amps max./ -40 to +105°C PA4FX Heavy spring   PA4FS Light spring
Tip Style SERRATED HEAD 1.5mm - 8 amps max. / -55 to +150°C PA4HX Heavy spring  PA4HU Ultra heavy spring   PA4HS Light spring   PA4HE Extra heavy spring	Tip Style SERRATED HEAD 1.5mm Light spring PA4HS
Tip Style SERRATED HEAD 1.5mm Heavy spring PA4HX	Tip Style SERRATED HEAD 1.5mm Ultra heavy spring PA4HU
Tip Style SERRATED HEAD 1.5mm Extra heavy spring PA4HE	Tip Style SERRATED HEAD 1.5mm STEEL - 8 amps max. / -55 to +150°C ST-PA4HU Ultra heavy spring  ST-PA4HE Extra heavy spring   ST-PA4HS Light spring   ST-PA4HX Heavy spring
Tip Style SERRATED HEAD 1.5mm STEEL Light spring ST-PA4HS	Tip Style SERRATED HEAD 1.5mm STEEL Heavy spring ST-PA4HX
Tip Style SERRATED HEAD 1.5mm STEEL Extra heavy spring ST-PA4HE	Tip Style SERRATED HEAD 1.5mm STEEL Ultra heavy spring ST-PA4HU
Tip Style SERRATED HEAD 2.0mm - 3 amps max./ -40 to +105C PA4HX-080 Heavy spring   PA4HS-080 Light spring	Tip Style SERRATED HEAD 2.5mm - 3 amps max./ -40 to +105°C PA4HX-100 Heavy spring   PA4HS-100 Light spring
Tip Style SERRATED HEAD 3mm - 3 amps max./ -40 to +105°C PA4HX-120 Heavy spring   PA4HS-120 Light spring	Tip Style SERRATED HEAD 4.0mm - 3 amps max./ -40 to +105°C PA4HX-160 Heavy spring   PA4HS-160 Light spring
Tip Style REDUCED RADIUS - 8 amps max. (for connector applications) / -55 to +150°C PA4JL-064 Extra light spring  PA4JU-064 Ultra heavy spring   PA4JS-064 Light spring   PA4JX-064 Heavy spring	Tip Style REDUCED RADIUS Extra light spring PA4JL-064
Tip Style REDUCED RADIUS - Light spring PA4JS-064	Tip Style REDUCED RADIUS - Heavy spring PA4JX-064
Tip Style REDUCED RADIUS Ultra heavy spring PA4JU-064	Tip Style PLAIN RADIUS- 3 amps max./ -40 to +105°C PA4JX Heavy spring    PA4JS Light spring   PA4JU Ultra Heavy spring
Tip Style PLAIN RADIUS Light spring PA4JS	Tip Style PLAIN RADIUS Heavy spring PA4JX
Tip Style PLAIN RADIUS Ultra heavy spring PA4JU	Tip Style STAR HEAD - 3 amps max. / -40 to +105°C PA4MX Heavy spring    PA4MS Light spring   PA4MU Ultra heavy spring
Tip Style STAR HEAD Light spring PA4MS	Tip Style STAR HEAD Heavy spring PA4MX
Tip Style STAR HEAD Ultra heavy spring PA4MU	Tip Style 0.5mm SMALL CROWN - 8 amps max./ -55 to +150°C PA4QX-018 Heavy spring    PA4QS-018 Light spring   PA4QU-018 Ultra heavy spring
Tip Style SMALL CROWN STEEL - 8 amps max./ -55 to +150°C LEAD FREE LF-PA4QU-018 Ultra heavy spring   LF-PA4QX-018 Heavy spring	Tip Style SMALL CROWN Heavy spring - LEAD FREE LF-PA4QX-018
Tip Style SMALL CROWN Ultra Heavy spring - LEAD FREE LF-PA4QU-018	Tip Style 0.9mm PLAIN CROWN - 8 amps max. / -55 to +150°C PA4QPX-040 Heavy spring  PA4QPU-040 Ultra heavy spring   PA4QPS-040 Light spring   PA4QPE-040 Extra heavy spring
Tip Style PLAIN CROWN STEEL - 8 amps max./ -55 to +150°C. ST-PA4QPX-040 Heavy spring  ST-PA4QPU-040 Ultra heavy spring   ST-PA4QPS-040 Light spring   ST-PA4QPE-040 Extra heavy spring	Tip Style PLAIN CROWN Light spring STEEL ST-PA4QPS-040
Tip Style PLAIN CROWN Heavy spring STEEL ST-PA4QPX-040	Tip Style PLAIN CROWN Extra heavy spring STEEL ST-PA4QPE-040
Tip Style PLAIN CROWN Ultra heavy spring STEEL ST-PA4QPU-040	Tip Style 1.3mm CROWN - 8 amps max. / -55 to +150°C PA4QX-050 Heavy spring  PA4QE-050 Extra heavy spring   PA4QS-050 Light spring   PA4QU-050 Ultra heavy spring
Tip Style 1.3mm CROWN - 8 amps max./ -55 to +150°C - LEAD FREE LF-PA4QE-050 Ex heavy spring    LF-PA4QX-050 Heavy spring   LF-PA4QU-050 Ult Heavy spring	Tip Style 1.3mm CROWN Heavy spring - LEAD FREE LF-PA4QX-050
Tip Style 1.3mm CROWN Extra heavy spring STEEL - LEAD FREE LF-PA4QE-050	Tip Style 1.3mm CROWN Ultra heavy spring STEEL - LEAD FREE LF-PA4QU-050
Tip Style 1.5mm CROWN - 3 amps max./ -40 to +105°C PA4QX-060 Heavy spring   PA4QS-060 Light spring	Tip Style TULIP HEAD - 8 amps max./ -55 to +150°C PA4RX Heavy spring  PA4RU Ultra heavy spring   PA4RS Light spring   PA4RE Extra heavy spring
Tip Style TULIP HEAD Light spring PA4RS	Tip Style TULIP HEAD Heavy spring PA4RX
Tip Style TULIP HEAD Extra heavy spring PA4RE	Tip Style TULIP HEAD Ultra heavy spring PA4RU
Tip Style TULIP HEAD STEEL - 8 amps max./ -55 to +150°C ST-PA4RU Ultra heavy spring  ST-PA4RE Extra heavy spring   ST-PA4RS Light spring   ST-PA4RX Heavy spring	Tip Style TULIP HEAD Light spring STEEL ST-PA4RS
Tip Style TULIP HEAD Heavy spring STEEL ST-PA4RX	Tip Style TULIP HEAD Extra heavy spring STEEL ST-PA4RE
Tip Style TULIP HEAD Ultra heavy spring STEEL ST-PA4RU	Tip Style PLAIN PYRAMID 0.9mm - 8 amps max./ -55 to +150°C PA4TX-036 Heavy spring  PA4TU-036 Ultra heavy spring   PA4TS-036 Light spring   PA4TE-036 Extra heavy spring
Tip Style PLAIN PYRAMID 0.9mm Light spring PA4TS-036	Tip Style PLAIN PYRAMID 0.9mm Heavy spring PA4TX-036
Tip Style PLAIN PYRAMID 0.9mm Extra heavy spring PA4TE-036	Tip Style PLAIN PYRAMID 0.9mm Ultra heavy spring PA4TU-036
Tip Style PLAIN PYRAMID 0.9mm STEEL - 8 amps max./ -55 to +150°C ST-PA4TX-036 Heavy spring  ST-PA4TU-036 Ultra heavy spring   ST-PA4TS-036 Light spring   ST-PA4TE-036 Extra heavy spring	Tip Style PLAIN PYRAMID 0.9mm Light spring STEEL ST-PA4TS-036
Tip Style PLAIN PYRAMID 0.9mm Heavy spring STEEL ST-PA4TX-036	Tip Style PLAIN PYRAMID 0.9mm Extra heavy spring STEEL ST-PA4TE-036
Tip Style PLAIN PYRAMID 0.9mm Ultra heavy spring STEEL ST-PA4TU-036	Tip Style SHARP PYRAMID - 8 amps max. / -55 to +150°C PA4TX-041 Heavy spring  PA4TU-041 Ultra heavy spring   PA4TS-041 Light spring   PA4TE-041 Extra heavy spring
Tip Style SHARP PYRAMID STEEL - 8 amps max./ -55 to +150°C LEAD FREE LF-PA4TE-041 Ex heavy spring    LF-PA4TX-041 Heavy spring   LF-PA4TU-041 Ult heavy spring	Tip Style SHARP PYRAMID Heavy spring - LEAD FREE LF-PA4TX-041
Tip Style SHARP PYRAMID Extra heavy spring - LEAD FREE LF-PA4TE-041	Tip Style SHARP PYRAMID Ultra heavy - LEAD FREE LF-PA4TU-041
Tip Style 1.5mm PYRAMID HEAD 3 amps max / -40 to +105°C PA4TX Heavy spring   PA4TS Light spring	Tip Style 2.0mm PYRAMID HEAD 3 amps max / -40 to +105°C PA4TX-2.0 Heavy spring   PA4TS-2.0 Light spring
Tip Style 2.5mm PYRAMID HEAD Heavy spring 3 amps max / -40 to +105°C PA4TX-2.5	Tip Style 3.5mm PYRAMID HEAD Heavy spring 3 amps max /-40 to +105°C PA4TX-3.5
Tip Style SUPER SHARP 3-NEEDLE - 8 amps max./ -55 to +150°C PA4VX Heavy spring  PA4VU Ultra heavy spring   PA4VS Light spring   PA4VE Extra heavy spring	Tip Style SUPER SHARP 3-NEEDLE L spring PA4VS
Tip Style SUPER SHARP 3-NEEDLE H spring PA4VX	Tip Style SUPER SHARP 3-NEEDLE EH spring PA4VE
Tip Style SUPER SHARP 3-NEEDLE UH spring PA4VU	Tip Style SUPER SHARP 3-NEEDLE STEEL - 8 amps max./ -55 to +150°C ST-PA4VX Heavy spring  ST-PA4VU Ultra heavy spring   ST-PA4VS Light spring   ST-PA4VE Extra heavy spring
Tip Style SUPER SHARP 3-NEEDLE Light spring STEEL ST-PA4VS	Tip Style SUPER SHARP 3-NEEDLE H spring STEEL ST-PA4VX
Tip Style SUPER SHARP 3-NEEDLE UH spring STEEL ST-PA4VU	Tip Style 8 POINT CROWN HEAD - 8 amps max. / -55 to +150°C PA4ZX Heavy spring  PA4ZU Ultra Heavy spring   PA4ZS Light spring   PA4ZE Extra Heavy spring
Tip Style 8 POINT CROWN HEAD Light spring PA4ZS	Tip Style 8 POINT CROWN HEAD Heavy spring PA4ZX
Tip Style 8 POINT CROWN HEAD Extra heavy spring PA4ZE	Tip Style 8 POINT CROWN HEAD Ultra heavy spring PA4ZU
Lead-Free Solder Tip Style SUPER-SHARP BLADE - 8 amps max./ -55 to +150°C - LEAD FREE LF-PA4KE Ex heavy spring    LF-PA4KX Heavy spring   LF-PA4KU Ult heavy spring	Lead-Free Solder Tip Style SUPER-SHARP BLADE H spring - LEAD FREE LF-PA4KX
Lead-Free Solder Tip Style SUPER-SHARP BLADE E H spring - LEAD FREE LF-PA4KE	Lead-Free Solder Tip Style SUPER-SHARP BLADE U H spring - LEAD FREE LF-PA4KU
Lead-Free Solder Tip Style STEEL SHARP 90° BLADE - 8 amps max./ -55 to +150°C. - LEAD FREE LF-PA4IE Ex heavy spring    LF-PA4IX Heavy spring   LF-PA4IU Ult heavy spring	Lead-Free Solder Tip Style SHARP 90° BLADE H spring - LEAD FREE LF-PA4IX
Lead-Free Solder Tip Style STEEL SHARP 90° BLADE E H spring - LEAD FREE LF-PA4IE	Lead-Free Solder Tip Style SHARP 90° BLADE U H spring - LEAD FREE LF-PA4IU
Lead-Free Solder Tip Style ROBUST 90° BLADE - 8 amps max./ -55 to +150°C - LEAD FREE LF-PA418E Ex heavy spring    LF-PA418X H spring   LF-PA418U Ult heavy spring	Lead-Free Solder Tip Style ROBUST 90° BLADE H spring - LEAD FREE LF-PA4I8X
Lead-Free Solder Tip Style ROBUST 90° BLADE E H spring - LEAD FREE LF-PA4I8E	Lead-Free Solder Tip Style ROBUST 90° BLADE U H spring - LEAD FREE LF-PA4I8U
Tip Style STEEL CROSS BLADE - 8 amps max./ -55 to +150°C ST-PA4LX Heavy spring    ST-PA4LS Light spring   ST-PA4LU Ultra heavy spring	Tip Style STEEL CROSS BLADE L spring ST-PA4LS
Tip Style STEEL CROSS BLADE H spring ST-PA4LX	Tip Style STEEL CROSS BLADE U spring ST-PA4LU
Tip Style SHARP DAGGER - 8 amps max./ -55 to +150°C - LEAD FREE LF-PA4TE-042 Ex heavy spring    LF-PA4TX-042 Heavy spring   LF-PA4TU-042 Ult heavy spring	Tip Style Sharp dagger - Heavy spring - LEAD FREE LF-PA4TX-042
Tip Style SHARP DAGGER EH spring - LEAD FREE LF-PA4TE-042	Standard Sharp dagger/Ultra hvy spring - LEAD FREE LF-PA4TU-042
Tip Style Sharp dagger UH spring ST-PA4TU-042	Receptacle CRIMP RA4C
Receptacle SOLDER CUP RA4S	Receptacle 0.64mm ROUND PIN RA4R
Receptacle 1.0mm ROUND PIN RA4R-040	Receptacle WIRE-WRAP RA4W
Receptacle Receptacle - Wire wrap RA4W3	Receptacle WIRE WRAP RA4W12
Receptacle RECEPTACLE WIREWRAP RA4WL	Receptacle WIRE WRAP RA4WLL
Receptacle WIREWRAP RA4WLLL