SPA-1 High-Performance and Standard Probe

SPA-1
High-Performance
and Standard Probe
Test Center .75 (1.91)

Probe Specifications
Mechanical
Full Travel:	.100 (2.54)
Recommended Working Travel:	.067 (1.70)
Mechanical Life Exceeds:	1 x 10⁶ cycles

Operating Temperature	-55°C to +150°C
Consult factory for other temperature requirements, and applications below -40°

Electrical (Static Condition)
Current Rating:	3 amps
Maximum continuous current, non-inductive at working travel

Probe Resistance	50 milliohms
With a standard deviation of <7 milliohms @ 25 mA test current

Materials and Finishes
Plunger:	Heat-treated beryllium copper, rhodium plated over hard nickel
Barrel:	Work-hardened phosphor bronze, HPA-GOLD™ plated (I.D. and O.D.) over hard nickel
Spring:	Stainless steel, silver plated

Receptacle Specifications
Mounting Hole Size:	.053/.055 (1.35/1.40)
A #54 or 1.4 mm drill is most commonly used

Recommended Wire Gauge:	24-28 AWG

Connections:	SPR-1W Crimp SPR-1W-1 Solder cup SPR-1W-2/SPR-1W-2M Wire wrap/square post. Vacuum leak rate not to exceed 1 x 10-4 CFM @ 15 psi

Materials and Finishes
Housing:	Work-hardened nickel silver, gold plated over hard nickel
Square Post:	Phosphorous bronze, gold plated
The SPA-1 may be used to test bare PCBs on mixed test centers with the HPA-0 and HPA-74 probes.

Tips (top)

Spring Force (top)

Spring Force in 0z. (grams)
Spring Type		Preload	2/3 Travel
To order add dash number to Model Number
Standard	Shown	1.1 (31)	2.5 (71)
Alternate	-1	1.3 (37)	4.5 (128)
Optional spring forces and materials are available

Connectors (top)

How to Order (top)

For each probe, specify the probe model and tip style as shown in the example below. If required, specify the optional non-standard spring force.

Example: