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 | 19421 - Immediate | $34.52 | View Details |
![]() | ![]() | 1722563104 | CONN RCPT HSG 4POS 3.50MM | 14166 - Immediate 8000 - Factory Stock | $34.52 | View Details |
![]() | ![]() | 1722564102 | CONN RCPT HSG 2POS 3.50MM | 15261 - Immediate | $32.75 | View Details |
![]() | ![]() | 1722563103 | CONN RCPT HSG 3POS 3.50MM | 8735 - Immediate 71500 - Factory Stock | $30.10 | View Details |
![]() | ![]() | 1722584104 | CONN RCPT HSG 4POS 3.50MM | 8019 - Immediate | $38.95 | View Details |
![]() | ![]() | 1722583104 | CONN RCPT HSG 4POS 3.50MM | 9455 - Immediate | $32.75 | View Details |
![]() | ![]() | 1722564104 | CONN RCPT HSG 4POS 3.50MM | 2896 - Immediate | $34.52 | View Details |
![]() | ![]() | 1722583106 | CONN RCPT HSG 6POS 3.50MM | 4402 - Immediate | $40.72 | View Details |
![]() | ![]() | 1722564103 | CONN RCPT HSG 3POS 3.50MM | 4249 - Immediate | $26.56 | View Details |
![]() | ![]() | 1722563106 | CONN RCPT HSG 6POS 3.50MM | 3920 - Immediate | $39.83 | View Details |
![]() | ![]() | 1722584106 | CONN RCPT HSG 6POS 3.50MM | 5705 - Immediate | $38.95 | View Details |
![]() | ![]() | 1722583108 | CONN RCPT HSG 8POS 3.50MM | 18441 - Immediate | $38.95 | View Details |
![]() | ![]() | 1722563108 | CONN RCPT HSG 8POS 3.50MM | 6500 - Immediate | $54.00 | View Details |
![]() | ![]() | 1722584108 | CONN RCPT HSG 8POS 3.50MM | 3792 - Immediate | $54.88 | View Details |
PCB Headers
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | 1722861102 | CONN HEADER VERT 2POS 3.5MM | 13139 - Immediate | $68.16 | View Details |
![]() | ![]() | 1722981104 | CONN HEADER VERT 4POS 3.5MM | 3431 - Immediate | $77.90 | View Details |
![]() | ![]() | 1722862102 | CONN HEADER VERT 2POS 3.5MM | 18657 - Immediate | $53.11 | View Details |
![]() | ![]() | 1722981106 | CONN HEADER VERT 6POS 3.5MM | 7721 - Immediate | $97.37 | View Details |
![]() | ![]() | 1722861302 | CONN HEADER VERT 2POS 3.5MM | 1002 - Immediate | $189.43 | View Details |
![]() | ![]() | 1723103306 | ULTRAFIT HDR RT 1R BLK NAIL 06 C | 0 - Immediate | $337.26 | View Details |
![]() | ![]() | 1722991310 | CONN HEADER VERT 10POS 3.5MM | 499 - Immediate | $524.92 | View Details |
![]() | ![]() | 1722862103 | CONN HEADER VERT 3POS 3.5MM | 0 - Immediate | $81.44 | View Details |
![]() | ![]() | 1722861106 | CONN HEADER VERT 6POS 3.5MM | 1109 - Immediate | $95.60 | View Details |
![]() | ![]() | 1722861202 | CONN HEADER VERT 2POS 3.5MM | 1727 - Immediate | $115.08 | View Details |
![]() | ![]() | 1722861203 | CONN HEADER VERT 3POS 3.5MM | 1713 - Immediate | $144.29 | View Details |
![]() | ![]() | 1722992108 | CONN HEADER VERT 8POS 3.5MM | 1620 - Immediate | $166.42 | View Details |
![]() | ![]() | 1722991304 | CONN HEADER VERT 4POS 3.5MM | 0 - Immediate | $220.41 | View Details |
![]() | ![]() | 1722982112 | CONN HEADER VERT 12POS 3.5MM | 940 - Immediate | $158.45 | View Details |
Crimp Terminals
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | 1722537023 | ULTRA-FIT TANGLESS CRIMP TERMINA | 265309 - Immediate 105000 - Factory Stock | $22.13 | View Details |
![]() | ![]() | 1722537123 | ULTRA-FIT TANGLESS CRIMP TERMINA | 20142 - Immediate 35000 - Factory Stock | $22.13 | View Details |
![]() | ![]() | 1722536111 | CONN SOCKET 20-22AWG CRIMP GOLD | 24011 - Immediate 35000 - Factory Stock | $32.75 | View Details |
![]() | ![]() | 1722536012 | CRIMP TERM ULTRA-FIT 16-18 30MI | 50956 - Immediate | $36.29 | View Details |
![]() | ![]() | 1722536011 | CONN SOCKET 16-18AWG CRIMP GOLD | 13598 - Immediate 35000 - Factory Stock | $36.29 | View Details |
![]() | ![]() | 1722536112 | CRIMP TERM ULTRA-FIT 20-22 30MI | 75557 - Immediate | $36.29 | View Details |
![]() | ![]() | 2169465013 | ULTRA-FIT PLUG TML TIN 16-18AWG | 0 - Immediate | $47.80 | View Details |
![]() | ![]() | 2169465113 | ULTRA-FIT PLUG TML TIN 20-22AWG | 19886 - Immediate | $47.80 | View Details |
![]() | ![]() | 2169465011 | ULTRA-FIT PLUG TML GOLD 15U 16-1 | 0 - Immediate | $49.57 | View Details |
![]() | ![]() | 2169465111 | ULTRA-FIT PLUG TML GOLD 15U 20-2 | 24541 - Immediate | $75.24 | View Details |
![]() | ![]() | 2169465112 | ULTRA-FIT PLUG TML GOLD 30U 20-2 | 36201 - Immediate | $94.72 | View Details |
![]() | ![]() | 2169465012 | ULTRA-FIT PLUG TML GOLD 30U 16-1 | 26162 - Immediate | $77.90 | View Details |
TPA Retainers
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | 1722644002 | ULTRA-FIT TANGLESS TERMINAL POSI | 8994 - Immediate | $13.28 | View Details |
![]() | ![]() | 1722644003 | ULTRA-FIT TANGLESS TERMINAL POSI | 5357 - Immediate | $14.16 | View Details |
![]() | ![]() | 1722643002 | ULTRA-FIT TANGLESS TERMINAL POSI | 9572 - Immediate | $13.28 | View Details |
![]() | ![]() | 1722644004 | ULTRA-FIT TANGLESS TERMINAL POSI | 8249 - Immediate 52000 - Factory Stock | $13.28 | View Details |
![]() | ![]() | 1722643004 | ULTRA-FIT TANGLESS TERMINAL POSI | 5993 - Immediate | $14.16 | View Details |
![]() | ![]() | 1722643003 | ULTRA-FIT TANGLESS TERMINAL POSI | 6985 - Immediate | $14.16 | View Details |
![]() | ![]() | 1722643005 | ULTRA-FIT TANGLESS TERMINAL POSI | 3054 - Immediate | $14.16 | View Details |
![]() | ![]() | 1722644008 | ULTRA-FIT TANGLESS TERMINAL POSI | 4785 - Immediate | $14.16 | View Details |
![]() | ![]() | 1722643008 | ULTRA-FIT TANGLESS TERMINAL POSI | 3018 - Immediate | $15.05 | View Details |
![]() | ![]() | 1722644005 | ULTRA-FIT TANGLESS TERMINAL POSI | 668 - Immediate | $13.28 | View Details |
![]() | ![]() | 1722644006 | ULTRA-FIT TANGLESS TERMINAL POSI | 9259 - Immediate | $14.16 | View Details |
![]() | ![]() | 1722644007 | ULTRA-FIT TANGLESS TERMINAL POSI | 5683 - Immediate | $13.28 | View Details |
![]() | ![]() | 1722643007 | ULTRA-FIT TANGLESS TERMINAL POSI | 3565 - Immediate | $15.93 | View Details |
![]() | ![]() | 1722643006 | ULTRA-FIT TANGLESS TERMINAL POSI | 4949 - Immediate | $15.93 | View Details |
Crimpers and Applicators
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | 2002184600 | HAND TOOL FOR ULTRA-FIT | 7 - Immediate 10 - Factory Stock | $44,650.37 | View Details |
![]() | ![]() | 0639043300 | FINEADJUST APPLICATOR | 1 - Immediate | $369,216.92 | View Details |
![]() | ![]() | 0638275300 | TOOL HAND CRIMPER 172253 SIDE | 6 - Immediate 50 - Factory Stock | $39,206.39 | View Details |
![]() | ![]() | 2238630900 | HAND TOOL ULTRA-FIT 20-22AWG | 0 - Immediate | $38,983.32 | View Details |
![]() | ![]() | 2037024300 | FINEADJUST APPLICATOR | 0 - Immediate | $510,206.26 | View Details |
![]() | ![]() | 2037024400 | FINEADJUST APPLICATOR | 0 - Immediate | $522,676.96 | 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 | 354 - Immediate | $80.55 | View Details |
![]() | ![]() | 2174701121 | ULTRA-FIT F-F 75MM 16 AWG LEADS | 915 - Immediate | $80.55 | View Details |
![]() | ![]() | 2174712111 | ULTRA-FIT F-S 75MM 18 AWG LEADS | 985 - Immediate | $80.55 | View Details |
![]() | ![]() | 2174711104 | ULTRA-FIT F-S 300MM 20 AWG LEADS | 974 - Immediate | $80.55 | View Details |
![]() | ![]() | 2174712203 | ULTRA-FIT F-S 225MM 20 AWG LEADS | 990 - Immediate | $92.95 | View Details |
![]() | ![]() | 2174711205 | ULTRA-FIT F-S 450MM 20 AWG LEADS | 906 - Immediate | $92.95 | View Details |
![]() | ![]() | 2174711113 | ULTRA-FIT F-S 225MM 18 AWG LEADS | 950 - Immediate | $80.55 | View Details |
![]() | ![]() | 2174712204 | ULTRA-FIT F-S 300MM 20 AWG LEADS | 980 - Immediate | $92.95 | View Details |
![]() | ![]() | 2174702224 | ULTRA-FIT F-F 300MM 16 AWG LEADS | 784 - Immediate | $92.95 | View Details |
![]() | ![]() | 2174711125 | ULTRA-FIT F-S 450MM 16 AWG LEADS | 971 - Immediate | $80.55 | View Details |
![]() | ![]() | 2174712105 | ULTRA-FIT F-S 450MM 20 AWG LEADS | 835 - Immediate | $80.55 | View Details |
![]() | ![]() | 2174712223 | ULTRA-FIT F-S 225MM 16 AWG LEADS | 1000 - Immediate | $92.95 | View Details |
![]() | ![]() | 2174712205 | ULTRA-FIT F-S 450MM 20 AWG LEADS | 984 - Immediate | $80.55 | View Details |
![]() | ![]() | 2174711224 | ULTRA-FIT F-S 300MM 16 AWG LEADS | 730 - Immediate | $92.95 | View Details |































































