Ultra-Fit Power Connectors
Molex's Ultra-Fit series eliminates same-circuit-size cross mating, optimizes space savings, and reduces terminal back-out
Each industry faces different power connector challenges. Failures can occur in appliances as a result of mis-mated connectors. Terminal back-out or other potential assembly errors can lead to dangerous brake malfunctions in vehicles. Pervasive data growth is driving PCB makers to use more electronics in smaller spaces; sourcing small yet power-dense electronics is a dilemma. Molex's Ultra-Fit power connectors address these issues, solving four key design challenges while offering the premium housing features of proven Mini-Fit and Micro-Fit 3.0 connector systems. Color-coded housings mitigate the risk of mis-mating. Optional TPA retainers significantly reduce terminal back-out. A streamlined design that is 17% smaller than competing power connectors provides space savings and an ultra-low mating force reduces operator fatigue when mating numerous high-circuit connectors.
Video: Ultra Fit Power Connectors
Features and Benefits
- Multiple mechanical keying and color-coded options
- Allow same-circuit, multiple connector use with virtually no chance of cross mating. Color coding provides visual indication of the proper mating connector enabling faster assembly
- 17% reduction in pitch over similar power connectors
- Current-dense design saves PCB space. Allows for smaller packaging without sacrificing current-carrying capabilities
- Optional terminal position assurance (TPA) retainer
- Guarantees the terminal is fully seated in the housing to reduce terminal back-out. Retains terminal if main retention feature fails
- Ultra-low mating force terminal
- Reduces operator fatigue and improves assembly compliance for high-circuit applications
- Positive-lock housing with anti-snag design
- Ensures mated connector assemblies will not accidentally disengage. Provides an audible click while mating. Protects latch from damage due to wire snags
- Fully isolated terminals
- Protect against potential damage of the header and receptacle terminals during handling and mating
- Terminal interface with six independent points of contact (split-box terminal design)
- Offers redundant, secondary current paths for long-term performance and reliability
Crimp Housings
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | 2025694007 | ULTRA-FIT PLUG SR NAT FH 7CKT | 700 - Immediate | $1.10 | View Details |
![]() | ![]() | 2025694107 | ULTRA-FIT PLUG SR NAT PM 7CKT | 600 - Immediate | $1.15 | View Details |
![]() | ![]() | 2169454008 | ULTRA-FIT PLUG DR NAT FH 8CKT | 687 - Immediate | $1.20 | View Details |
![]() | ![]() | 2025694108 | ULTRA-FIT PLUG SR NAT PM 8CKT | 500 - Immediate | $1.28 | View Details |
![]() | ![]() | 2169454010 | ULTRA-FIT PLUG DR NAT FH 10CKT | 550 - Immediate | $1.39 | View Details |
![]() | ![]() | 2025693008 | ULTRA-FIT PLUG SR BLK FH 8CKT | 600 - Immediate | $1.40 | View Details |
![]() | ![]() | 2169454110 | ULTRA-FIT PLUG DR NAT PM 10CKT | 450 - Immediate | $1.43 | View Details |
![]() | ![]() | 2169454012 | ULTRA-FIT PLUG DR NAT FH 12CKT | 496 - Immediate | $1.60 | View Details |
![]() | ![]() | 2169454014 | ULTRA-FIT PLUG DR NAT FH 14CKT | 450 - Immediate | $1.78 | View Details |
![]() | ![]() | 2169454114 | ULTRA-FIT PLUG DR NAT PM 14CKT | 340 - Immediate | $1.87 | View Details |
![]() | ![]() | 2025694103 | ULTRA-FIT PLUG SR NAT PM 3CKT | 1000 - Immediate | $0.82 | View Details |
![]() | ![]() | 2025694104 | ULTRA-FIT PLUG SR NAT PM 4CKT | 995 - Immediate | $0.87 | View Details |
![]() | ![]() | 2025694006 | ULTRA-FIT PLUG SR NAT FH 6CKT | 796 - Immediate | $0.98 | View Details |
![]() | ![]() | 1722583104 | CONN RCPT HSG 4POS 3.50MM | 0 - Immediate 16000 - Factory Stock | $0.39 | View Details |
PCB Headers
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | 1722861102 | CONN HEADER VERT 2POS 3.5MM | 0 - Immediate | $0.77 | View Details |
![]() | ![]() | 1722981104 | CONN HEADER VERT 4POS 3.5MM | 0 - Immediate | $0.88 | View Details |
![]() | ![]() | 1722862102 | CONN HEADER VERT 2POS 3.5MM | 0 - Immediate | $0.60 | View Details |
![]() | ![]() | 1722981106 | CONN HEADER VERT 6POS 3.5MM | 0 - Immediate | $1.10 | View Details |
![]() | ![]() | 1722861302 | CONN HEADER VERT 2POS 3.5MM | 0 - Immediate | $2.08 | View Details |
![]() | ![]() | 1723103306 | ULTRAFIT HDR RT 1R BLK NAIL 06 C | 0 - Immediate | $3.81 | View Details |
![]() | ![]() | 1722991310 | CONN HEADER VERT 10POS 3.5MM | 0 - Immediate | $5.43 | View Details |
![]() | ![]() | 1722862103 | CONN HEADER VERT 3POS 3.5MM | 0 - Immediate | $0.92 | View Details |
![]() | ![]() | 1722861106 | CONN HEADER VERT 6POS 3.5MM | 0 - Immediate | $1.08 | View Details |
![]() | ![]() | 1722861202 | CONN HEADER VERT 2POS 3.5MM | 0 - Immediate | $1.30 | View Details |
![]() | ![]() | 1722861203 | CONN HEADER VERT 3POS 3.5MM | 0 - Immediate 780 - Marketplace | $1.50 | View Details |
![]() | ![]() | 1722992108 | CONN HEADER VERT 8POS 3.5MM | 0 - Immediate | $1.88 | View Details |
![]() | ![]() | 1722991304 | CONN HEADER VERT 4POS 3.5MM | 0 - Immediate | $2.11 | View Details |
![]() | ![]() | 1722982112 | CONN HEADER VERT 12POS 3.5MM | 0 - Immediate | $1.79 | View Details |
Crimp Terminals
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | 1722537023 | ULTRA-FIT TANGLESS CRIMP TERMINA | 0 - Immediate 350000 - Factory Stock | $0.22 | View Details |
![]() | ![]() | 1722537123 | ULTRA-FIT TANGLESS CRIMP TERMINA | 0 - Immediate 105000 - Factory Stock | $0.30 | View Details |
![]() | ![]() | 1722536111 | CONN SOCKET 20-22AWG CRIMP GOLD | 0 - Immediate 105000 - Factory Stock | $0.31 | View Details |
![]() | ![]() | 1722536012 | CRIMP TERM ULTRA-FIT 16-18 30MI | 0 - Immediate 70000 - Factory Stock | $0.46 | View Details |
![]() | ![]() | 1722536011 | CONN SOCKET 16-18AWG CRIMP GOLD | 0 - Immediate 280000 - Factory Stock | $0.37 | View Details |
![]() | ![]() | 1722536112 | CRIMP TERM ULTRA-FIT 20-22 30MI | 0 - Immediate | $0.46 | View Details |
![]() | ![]() | 2169465013 | ULTRA-FIT PLUG TML TIN 16-18AWG | 0 - Immediate 21000 - Marketplace | $0.28 | View Details |
![]() | ![]() | 2169465113 | ULTRA-FIT PLUG TML TIN 20-22AWG | 13386 - Immediate | $0.28 | View Details |
![]() | ![]() | 2169465011 | ULTRA-FIT PLUG TML GOLD 15U 16-1 | 0 - Immediate | $0.44 | View Details |
![]() | ![]() | 2169465111 | ULTRA-FIT PLUG TML GOLD 15U 20-2 | 24466 - Immediate | $0.45 | View Details |
![]() | ![]() | 2169465112 | ULTRA-FIT PLUG TML GOLD 30U 20-2 | 4156 - Immediate | $1.14 | View Details |
![]() | ![]() | 2169465012 | ULTRA-FIT PLUG TML GOLD 30U 16-1 | 1425 - Immediate | $1.14 | View Details |
TPA Retainers
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | 1722644002 | ULTRA-FIT TANGLESS TERMINAL POSI | 0 - Immediate | $0.17 | View Details |
![]() | ![]() | 1722644004 | ULTRA-FIT TANGLESS TERMINAL POSI | 0 - Immediate | $0.15 | View Details |
![]() | ![]() | 1722644005 | ULTRA-FIT TANGLESS TERMINAL POSI | 0 - Immediate | $0.19 | View Details |
![]() | ![]() | 1722643002 | ULTRA-FIT TANGLESS TERMINAL POSI | 0 - Immediate | $0.15 | View Details |
![]() | ![]() | 1722643003 | ULTRA-FIT TANGLESS TERMINAL POSI | 0 - Immediate | $0.15 | View Details |
![]() | ![]() | 1722643004 | ULTRA-FIT TANGLESS TERMINAL POSI | 0 - Immediate | $0.15 | View Details |
![]() | ![]() | 1722643005 | ULTRA-FIT TANGLESS TERMINAL POSI | 0 - Immediate | $0.16 | View Details |
![]() | ![]() | 1722644003 | ULTRA-FIT TANGLESS TERMINAL POSI | 0 - Immediate | $0.14 | View Details |
![]() | ![]() | 1722644008 | ULTRA-FIT TANGLESS TERMINAL POSI | 0 - Immediate | $0.21 | View Details |
![]() | ![]() | 1722643008 | ULTRA-FIT TANGLESS TERMINAL POSI | 0 - Immediate | $0.17 | View Details |
![]() | ![]() | 1722643006 | ULTRA-FIT TANGLESS TERMINAL POSI | 0 - Immediate | $0.18 | View Details |
![]() | ![]() | 1722643007 | ULTRA-FIT TANGLESS TERMINAL POSI | 0 - Immediate | $0.23 | View Details |
![]() | ![]() | 1722644007 | ULTRA-FIT TANGLESS TERMINAL POSI | 0 - Immediate | $0.15 | View Details |
![]() | ![]() | 1722644006 | ULTRA-FIT TANGLESS TERMINAL POSI | 0 - Immediate | $0.16 | View Details |
Crimpers and Applicators
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | 2238630900 | HAND TOOL ULTRA-FIT 20-22AWG | 0 - Immediate | $440.39 | View Details |
![]() | ![]() | 0638275300 | TOOL HAND CRIMPER 172253 SIDE | 0 - Immediate 50 - Factory Stock | $442.91 | View Details |
![]() | ![]() | 0639043300 | FINEADJUST APPLICATOR | 0 - Immediate | View Details for Pricing | View Details |
![]() | ![]() | 2037024300 | FINEADJUST APPLICATOR | 0 - Immediate | $6,807.51 | View Details |
![]() | ![]() | 2037024400 | FINEADJUST APPLICATOR | 0 - Immediate | $5,904.62 | View Details |
Jumper Wire/Pre-Crimps
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | 2174701223 | ULTRA-FIT F-F 225MM 16 AWG LEADS | 1000 - Immediate | $1.05 | View Details |
![]() | ![]() | 2174712201 | ULTRA-FIT F-S 75MM 20 AWG LEADS | 987 - Immediate | $1.05 | View Details |
![]() | ![]() | 2174712212 | ULTRA-FIT F-S 150MM 18 AWG LEADS | 960 - Immediate | $1.05 | View Details |
![]() | ![]() | 2174701221 | ULTRA-FIT F-F 75MM 16 AWG LEADS | 900 - Immediate | $1.05 | View Details |
![]() | ![]() | 2174712213 | ULTRA-FIT F-S 225MM 18 AWG LEADS | 1000 - Immediate | $1.05 | View Details |
![]() | ![]() | 2174712221 | ULTRA-FIT F-S 75MM 16 AWG LEADS | 1000 - Immediate | $1.05 | View Details |
![]() | ![]() | 2174711214 | ULTRA-FIT F-S 300MM 18 AWG LEADS | 1000 - Immediate | $1.05 | View Details |
![]() | ![]() | 2174711221 | ULTRA-FIT F-S 75MM 16 AWG LEADS | 1000 - Immediate | $1.05 | View Details |
![]() | ![]() | 2174712215 | ULTRA-FIT F-S 450MM 18 AWG LEADS | 1000 - Immediate | $1.05 | View Details |
![]() | ![]() | 2174712214 | ULTRA-FIT F-S 300MM 18 AWG LEADS | 1000 - Immediate | $1.05 | View Details |
![]() | ![]() | 2174712203 | ULTRA-FIT F-S 225MM 20 AWG LEADS | 990 - Immediate | $1.05 | View Details |
![]() | ![]() | 2174711201 | ULTRA-FIT F-S 75MM 20 AWG LEADS | 987 - Immediate | $1.05 | View Details |
![]() | ![]() | 2174702221 | ULTRA-FIT F-F 75MM 16 AWG LEADS | 780 - Immediate | $1.05 | View Details |
![]() | ![]() | 2174711212 | ULTRA-FIT F-S 150MM 18 AWG LEADS | 960 - Immediate | $1.05 | View Details |





















































