Housing for a 9-Circuit, 3-Row YL Harness
The JST YLR-09V is a 9-position receptacle housing from the YL series, arranged in 3 rows on a 0.177" (4.50mm) pitch. The white PA66 (Nylon 6/6) insulation material handles a -25°C to 90°C operating range, which covers indoor industrial control cabinets, automotive interior harnesses, and general-purpose equipment wiring.
What the 3-Row Layout Means for the Build
Three rows on a 4.50mm pitch give this housing a wider body than a 2-row equivalent at the same position count. The extra row packs 9 circuits into a shorter overall length than a single-row 9-position housing, which helps when routing a multi-conductor cable through a tight bend radius or into a confined enclosure. The trade-off is a wider connector footprint at the mating face — check the clearance around the harness route before committing.
Contacts Are Ordered Separately — Here Is What to Match
No secondary locking or TPA is listed for this housing, so terminal seating relies on the crimp quality and the latch alone.