Found 7 alternatives for 6-203736-0 by TE Connectivity AMP Connectors. Backplane Connectors Housings — Bulk,Bag.
CONN RACK & PANEL 1POS NAT PCB
CONN RCPT HSG 48POS GRAY PNL MNT
CONN RCPT HSG TYPE A 3POS
CONN RCPT HSG TYPE C 20POS
CONN PLUG HSG TYPE A 3POS
CONN PLUG HSG TYPE D 5POS
CONN 50POS BLACK IN-LINE