Ratings that drive the fit decision
At 5 A per circuit the 86503-422HLF sits comfortably above the signal-level current common to most 0.100" pitch headers — the 5 A rating reflects the phosphor bronze contact's thermal headroom rather than implying this is a power connector, so it handles low-level power rails, relay drivers, or indicator circuits without derating concerns. The 110 V rating is the voltage ceiling for the insulation and creepage geometry; for most industrial control and instrumentation boards this is not a constraint, but it disqualifies the part from higher-voltage bus or power-distribution applications. The push-pull fastening type means the header relies on the mating receptacle's latch or friction fit to hold the pair together — there are no screw-lock ears or locking clips on this unshrouded header. That is standard for BERGSTIK II and suits applications where the mated pair sits behind a panel or inside an enclosure where it is not regularly disconnected. If the application requires a positive lock under vibration or repeated mating cycles, the matching BERGSTIK II receptacle with a friction or bayonet latch is the pairing to specify.
Mating and termination
The header mates with the corresponding BERGSTIK II 22-position dual-row receptacle housing (a separate line item). The square pin cross-section and 0.100" row spacing are industry-standard dimensions shared across multiple 0.100" pitch header families, which means field-service technicians sometimes substitute a similar-looking header from a different series — the insulator keying and chamfer geometry on the BERGSTIK II receptacle prevent mis-mating with many but not all cross-family alternatives. Verify the receptacle's chamfer and polarisation features before swapping. Termination is through-hole solder with a post length of 0.120" (3.05 mm) and an overall contact length of 0.470" (11.94 mm). The insulation height of 0.100" (2.54 mm) is the standoff above the board surface, which determines the board-to-board gap when this header is used in a two-board stacking arrangement — confirm the z-height budget against the mating receptacle's datum.
Material and compliance baseline
The insulator is rated UL94 V-0 — the highest flammability classification for a connector housing — which means the material self-extinguishes and does not drip burning particles. This is the baseline requirement for industrial and instrumentation equipment that must pass end-product flammability testing under UL, IEC, or CSA standards. The evidence does not list a RoHS, REACH, or UL recognition number for this specific part. For industrial equipment going into EU or North American markets, confirm the specific compliance documentation with the distributor or Amphenol FCI directly — the base product number 86503 may have a compliant variant under a different suffix.