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 | |
|---|---|---|---|---|---|---|
![]() | ![]() | 1722563102 | CONN RCPT HSG 2POS 3.50MM | 14487 - Immediate | $0.42 | View Details |
![]() | ![]() | 1722563104 | CONN RCPT HSG 4POS 3.50MM | 174 - Immediate 8000 - Factory Stock | $0.43 | View Details |
![]() | ![]() | 1722564102 | CONN RCPT HSG 2POS 3.50MM | 8930 - Immediate | $0.40 | View Details |
![]() | ![]() | 1722563103 | CONN RCPT HSG 3POS 3.50MM | 16694 - Immediate | $0.37 | View Details |
![]() | ![]() | 1722584104 | CONN RCPT HSG 4POS 3.50MM | 6884 - Immediate | $0.47 | View Details |
![]() | ![]() | 1722583104 | CONN RCPT HSG 4POS 3.50MM | 18996 - Immediate 48000 - Factory Stock | $0.40 | View Details |
![]() | ![]() | 1722564104 | CONN RCPT HSG 4POS 3.50MM | 10832 - Immediate | $0.47 | View Details |
![]() | ![]() | 1722583106 | CONN RCPT HSG 6POS 3.50MM | 4923 - Immediate | $0.50 | View Details |
![]() | ![]() | 1722564103 | CONN RCPT HSG 3POS 3.50MM | 1913 - Immediate | $0.40 | View Details |
![]() | ![]() | 1722563106 | CONN RCPT HSG 6POS 3.50MM | 1367 - Immediate | $0.49 | View Details |
![]() | ![]() | 1722584106 | CONN RCPT HSG 6POS 3.50MM | 3607 - Immediate | $0.51 | View Details |
![]() | ![]() | 1722583108 | CONN RCPT HSG 8POS 3.50MM | 16787 - Immediate | $0.62 | View Details |
![]() | ![]() | 1722563108 | CONN RCPT HSG 8POS 3.50MM | 469 - Immediate | $0.66 | View Details |
![]() | ![]() | 1722584108 | CONN RCPT HSG 8POS 3.50MM | 3467 - Immediate | $0.71 | View Details |
PCB Headers
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | 1722861102 | CONN HEADER VERT 2POS 3.5MM | 8341 - Immediate | $0.86 | View Details |
![]() | ![]() | 1722981104 | CONN HEADER VERT 4POS 3.5MM | 1848 - Immediate | $0.98 | View Details |
![]() | ![]() | 1722862102 | CONN HEADER VERT 2POS 3.5MM | 4707 - Immediate | $0.94 | View Details |
![]() | ![]() | 1722981106 | CONN HEADER VERT 6POS 3.5MM | 2798 - Immediate | $1.23 | View Details |
![]() | ![]() | 1722861302 | CONN HEADER VERT 2POS 3.5MM | 752 - Immediate | $2.55 | View Details |
![]() | ![]() | 1723103306 | ULTRAFIT HDR RT 1R BLK NAIL 06 C | 2203 - Immediate | $4.37 | View Details |
![]() | ![]() | 1722991310 | CONN HEADER VERT 10POS 3.5MM | 0 - Immediate 277 - Marketplace 14850 - Factory Stock | $6.79 | View Details |
![]() | ![]() | 1722862103 | CONN HEADER VERT 3POS 3.5MM | 0 - Immediate 50 - Marketplace | $1.03 | View Details |
![]() | ![]() | 1722861106 | CONN HEADER VERT 6POS 3.5MM | 1119 - Immediate | $1.21 | View Details |
![]() | ![]() | 1722861202 | CONN HEADER VERT 2POS 3.5MM | 314 - Immediate | $1.72 | View Details |
![]() | ![]() | 1722861203 | CONN HEADER VERT 3POS 3.5MM | 0 - Immediate 5540 - Marketplace | $1.88 | View Details |
![]() | ![]() | 1722992108 | CONN HEADER VERT 8POS 3.5MM | 1582 - Immediate | $2.10 | View Details |
![]() | ![]() | 1722991304 | CONN HEADER VERT 4POS 3.5MM | 1649 - Immediate | $2.85 | View Details |
![]() | ![]() | 1722982112 | CONN HEADER VERT 12POS 3.5MM | 506 - Immediate | $2.50 | View Details |
Crimp Terminals
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | 1722537023 | ULTRA-FIT TANGLESS CRIMP TERMINA | 338138 - Immediate 280000 - Factory Stock | $0.28 | View Details |
![]() | ![]() | 1722537123 | ULTRA-FIT TANGLESS CRIMP TERMINA | 121606 - Immediate 70000 - Factory Stock | $0.28 | View Details |
![]() | ![]() | 1722536111 | CONN SOCKET 20-22AWG CRIMP GOLD | 159341 - Immediate | $0.42 | View Details |
![]() | ![]() | 1722536012 | CRIMP TERM ULTRA-FIT 16-18 30MI | 129116 - Immediate 35000 - Factory Stock | $0.47 | View Details |
![]() | ![]() | 1722536011 | CONN SOCKET 16-18AWG CRIMP GOLD | 141710 - Immediate | $0.47 | View Details |
![]() | ![]() | 1722536112 | CRIMP TERM ULTRA-FIT 20-22 30MI | 23566 - Immediate | $0.47 | View Details |
![]() | ![]() | 2169465013 | ULTRA-FIT PLUG TML TIN 16-18AWG | 0 - Immediate 43858 - Marketplace | $0.59 | View Details |
![]() | ![]() | 2169465113 | ULTRA-FIT PLUG TML TIN 20-22AWG | 14091 - Immediate | $0.59 | View Details |
![]() | ![]() | 2169465011 | ULTRA-FIT PLUG TML GOLD 15U 16-1 | 0 - Immediate 29884 - Marketplace | $0.70 | View Details |
![]() | ![]() | 2169465111 | ULTRA-FIT PLUG TML GOLD 15U 20-2 | 23090 - Immediate | $0.91 | View Details |
![]() | ![]() | 2169465112 | ULTRA-FIT PLUG TML GOLD 30U 20-2 | 24681 - Immediate | $1.41 | View Details |
![]() | ![]() | 2169465012 | ULTRA-FIT PLUG TML GOLD 30U 16-1 | 14457 - Immediate | $0.88 | View Details |
TPA Retainers
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | 1722644002 | ULTRA-FIT TANGLESS TERMINAL POSI | 14176 - Immediate | $0.16 | View Details |
![]() | ![]() | 1722644003 | ULTRA-FIT TANGLESS TERMINAL POSI | 7984 - Immediate | $0.17 | View Details |
![]() | ![]() | 1722643002 | ULTRA-FIT TANGLESS TERMINAL POSI | 16755 - Immediate | $0.18 | View Details |
![]() | ![]() | 1722644004 | ULTRA-FIT TANGLESS TERMINAL POSI | 6323 - Immediate | $0.17 | View Details |
![]() | ![]() | 1722643004 | ULTRA-FIT TANGLESS TERMINAL POSI | 5220 - Immediate 26000 - Factory Stock | $0.18 | View Details |
![]() | ![]() | 1722643003 | ULTRA-FIT TANGLESS TERMINAL POSI | 5934 - Immediate | $0.18 | View Details |
![]() | ![]() | 1722643005 | ULTRA-FIT TANGLESS TERMINAL POSI | 6834 - Immediate | $0.18 | View Details |
![]() | ![]() | 1722644008 | ULTRA-FIT TANGLESS TERMINAL POSI | 3847 - Immediate | $0.18 | View Details |
![]() | ![]() | 1722643008 | ULTRA-FIT TANGLESS TERMINAL POSI | 379 - Immediate | $0.20 | View Details |
![]() | ![]() | 1722644005 | ULTRA-FIT TANGLESS TERMINAL POSI | 5678 - Immediate | $0.17 | View Details |
![]() | ![]() | 1722644006 | ULTRA-FIT TANGLESS TERMINAL POSI | 8181 - Immediate | $0.18 | View Details |
![]() | ![]() | 1722644007 | ULTRA-FIT TANGLESS TERMINAL POSI | 4688 - Immediate | $0.18 | View Details |
![]() | ![]() | 1722643007 | ULTRA-FIT TANGLESS TERMINAL POSI | 3003 - Immediate | $0.20 | View Details |
![]() | ![]() | 1722643006 | ULTRA-FIT TANGLESS TERMINAL POSI | 5932 - Immediate | $0.20 | View Details |
Crimpers and Applicators
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | 2002184600 | HAND TOOL FOR ULTRA-FIT | 16 - Immediate | $504.42 | View Details |
![]() | ![]() | 0639043300 | FINEADJUST APPLICATOR | 0 - Immediate | $4,171.00 | View Details |
![]() | ![]() | 0638275300 | TOOL HAND CRIMPER 172253 SIDE | 3 - Immediate 50 - Factory Stock | $594.92 | View Details |
![]() | ![]() | 2238630900 | HAND TOOL ULTRA-FIT 20-22AWG | 32 - Immediate | $469.74 | View Details |
![]() | ![]() | 2037024300 | FINEADJUST APPLICATOR | 0 - Immediate | $6,807.51 | View Details |
![]() | ![]() | 2037024400 | FINEADJUST APPLICATOR | 0 - Immediate | $6,982.05 | View Details |
Jumper Wire/Pre-Crimps
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | 2174712124 | ULTRA-FIT F-S 300MM 16 AWG LEADS | 631 - Immediate | $1.31 | View Details |
![]() | ![]() | 2174701121 | ULTRA-FIT F-F 75MM 16 AWG LEADS | 915 - Immediate | $1.21 | View Details |
![]() | ![]() | 2174712111 | ULTRA-FIT F-S 75MM 18 AWG LEADS | 985 - Immediate | $1.21 | View Details |
![]() | ![]() | 2174711104 | ULTRA-FIT F-S 300MM 20 AWG LEADS | 974 - Immediate | $1.21 | View Details |
![]() | ![]() | 2174712203 | ULTRA-FIT F-S 225MM 20 AWG LEADS | 930 - Immediate | $1.40 | View Details |
![]() | ![]() | 2174711205 | ULTRA-FIT F-S 450MM 20 AWG LEADS | 766 - Immediate | $1.40 | View Details |
![]() | ![]() | 2174711113 | ULTRA-FIT F-S 225MM 18 AWG LEADS | 950 - Immediate | $1.21 | View Details |
![]() | ![]() | 2174712204 | ULTRA-FIT F-S 300MM 20 AWG LEADS | 980 - Immediate | $1.40 | View Details |
![]() | ![]() | 2174702224 | ULTRA-FIT F-F 300MM 16 AWG LEADS | 410 - Immediate | $1.40 | View Details |
![]() | ![]() | 2174711125 | ULTRA-FIT F-S 450MM 16 AWG LEADS | 71 - Immediate | $1.21 | View Details |
![]() | ![]() | 2174712105 | ULTRA-FIT F-S 450MM 20 AWG LEADS | 775 - Immediate | $1.21 | View Details |
![]() | ![]() | 2174712223 | ULTRA-FIT F-S 225MM 16 AWG LEADS | 980 - Immediate | $1.40 | View Details |
![]() | ![]() | 2174712205 | ULTRA-FIT F-S 450MM 20 AWG LEADS | 984 - Immediate | $1.21 | View Details |
![]() | ![]() | 2174711224 | ULTRA-FIT F-S 300MM 16 AWG LEADS | 330 - Immediate | $1.40 | View Details |

































































