and Standard Probe
Test Center .050(1.27)


Spring Force


How to Order

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

Operating Temperature
Standard spring: -55°C to +150°C
Alternate spring: -55°C to +105°C
Consult factory for other temperature requirements, and applications below -40° .

Electrical (Static Conditions)
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 cooper, rhodium plated over hard nickel
Barrel: Work-hardened phosphor bronze, HPA-GOLD" plated (I.D. and O.D.) over hard nickel
Spring Standard: Stainless steel, silver plated
Spring Alternate: Music wire, silver plated
Receptacle Specifications
Mounting Hole Size: .035/.0365 (0.89/0.93)
A #64 or 0.92 mm drill is most commonly used

Wire Gauge:
28-30 AWG

Connections: SPR-0W Crimp (To order with 30 inches of 28 AWG wire attached, add -28 to model number. For 30 AWG wire, add -30 to model number.)

SPR-0W-1 Solder cup

SPR-0W-4 Fastite® wire termination (30 AWG only), maximum insulation diameter .019 (0.48), wire strip length = .125 (3.2)

DS-62-1 Insulation sleeve (use with SPR-0W-4)

FWA-1-30 30 AWG wire with DS-62-1 insulation sleeve attached

Materials and Finishes Work-hardened nickel silver, gold plated over hard nickel

One DS-62-1 sleeve is provided with each SPR-0W-4 receptacle at no charge. If additional quantities are required, please contact the factory for pricing and delivery.
The SPA-0 may be used to test bare PCBs on mixed test centers with the HPA-1 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 .61 (17) 2.8 (79)
Alternate -1 .78 (22) 3.7 (105)
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.


Order Form


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