Terminal Block for PCB Power Distribution
The Molex Eurostyle 39890 398900403 is a 3-position terminal block on a 0.197" (5.00 mm) pitch, designed for through-hole PCB mounting with a 35° (145°) angled wire entry. The screw-clamp termination accepts 12-30 AWG wire, and the single-level housing is molded from black polyamide (PA) nylon. Rated 17.5 A at 300 V, it suits power distribution and control wiring on industrial PCBs where a fixed, field-serviceable connection is needed.
Angled Wire Entry for Tight Enclosures
The 35° (145°) mating orientation angles the wire entry relative to the PCB, which helps route wiring in shallow enclosures or where vertical clearance is limited. The screw-clamp uses a copper-nickel plated clamp and screw, with copper-tin plated contacts — a combination that resists corrosion in industrial atmospheres without requiring gold plating.
Current and Voltage Headroom
Rated 17.5 A at 300 V, this block carries more current than the 15 A-rated 39544 series sibling, giving extra headroom for power circuits. The 105°C operating temperature limit is typical for PA nylon housings — derate current above that temperature per the product drawing.