In-circuit Test Probe Pogo Pin PE75 Series for PCBA Inspection In-circuit test probes are mainly used for testing electrical performance of in-circuit components on PCB and the connection between circuit networks. It could quantitatively measure components such as resistors, capacitors, inductors, crystal oscillators, and perform functional tests of diodes, triodes, optocouplers, transformers, relays, operational amplifiers, power supply modules and integrated circuits. We will introduce in-circuit test probe PE75 series here. Its test center is 75 mil. The diameter is 1.91 mm and the total length is 33.1 mm. Various tip styles, for example, A, B, U, H, K, L, BK, etc., are available for test probes. There are roughly three types of receptacles, namely CR, SC and WW to fit each test probe. For details, please check below parameters. Technical Specifications Recommended Minimum Center: 1.91 mm (75 mil) Current Rating: 3 Amps, continuous Contact Resistance: 40 milliohms Mounting Hole Size: Diameter 1.35 mm Full Stroke: 6.4 mm Rated Stroke: 4.3 mm Spring Force: 150 gf (5.5 oz)/200 gf (7.2 oz)/227 gf (8 oz) Materials Receptacle: Brass, Gold Plated Contact Barrel: Phosphor Bronze, Gold Plated Spring: Music Wire, Gold Plated Plunger: BeCu, Nickel Plated or Gold Plated semiconductor test probes, in-circuit test probes, radio frequency probes, harness probes, battery contact probes, switching probes, big-current probes, spring probes, universal complex test probes, wafer probes, and so on.