Low mating force rectangular connectors Amphenol M55302 172-02 with gas tight bristle brush contacts
Amphenol Bristle Brush Contact Low Mating Force Rectangular Connectors
Product Overview
Amphenol's Bristle Brush Contact technology, featured in their Low Mating Force Rectangular Connectors, offers a superior electrical connection through multiple strands of high tensile strength wires bundled together. This design provides redundant current paths with a high number of contact points per mated contact, ensuring a gas-tight junction. Proven in military avionics and meeting MIL-DTL-55302 requirements, these connectors offer high density in tighter spacing, exceptionally low mating and un-mating forces (70-90% reduction compared to conventional pin-socket contacts), and proven durability with a long contact life of up to 100,000 mating cycles. Applications span medical equipment, IC chip testers, telecommunications, military and commercial aviation, military ground vehicles, and GPS systems. The series also offers design flexibility with hybrid configurations combining brush contacts with power, coax, or fiber optic termini.
Product Attributes
- Brand: Amphenol
- Contact Technology: Bristle Brush
- Series: Low Mating Force Rectangular Connectors
- Compliance: MIL-DTL-55302
- Origin: USA (Amphenol Aerospace, Sidney, NY)
- Certifications: ISO-9001:2008, AS9100
- RoHS Compliant: Available (consult Amphenol Aerospace)
Technical Specifications
| Specification | Details |
|---|---|
| Contact Interface | Multiple strands of high tensile wire bundled together; intermeshing multi-strand wire bundles create electrical connection. |
| Points of Contact | 14-70 points of contact per mated contact |
| Contact Resistance | 20 milliohms max. (stable, low resistance) |
| Mating/Unmating Force | Low; 1.5 oz. maximum per contact pair (1 oz. typical); 70-90% reduction from conventional pin-socket. |
| Durability | 100,000 mating cycles (even when hot swapped); documented intermittency-free performance. |
| Current Rating | 3 Ampere (PCB contacts); 5 Ampere (wire wrap / crimp contacts) |
| Temperature Rating | -65C to +125C |
| Insulation Resistance | 5 gigaohms minimum |
| Dielectric Withstanding Voltage | 750 volts @ sea level minimum; 250 volts @ 70,000 feet elevation min. |
| Contact Spacing | 0.100 inch center to center, square grid |
| Body Styles | Mother Board (MB), Daughter Board (DB), Input/Output (I/O), Printed Circuit (PC) |
| Rows | 2, 3, and 4 row arrangements |
| Contacts per Row | 10 to 100 contacts per row (increments of 1) |
| Termination Options | Straight & 90 PCB stud, wire wrap & crimp; options on termination lengths and plating. |
| Polarization | Up to 256 keyed, mating polarizations available. |
| Hybrid Configurations | Combinations of Brush, Signal, Power, Coax, Twinax, and Fiber Optic Termini available. |
| Materials - Connector Body | Glass-filled thermoplastic molding material (MIL-M-24519 or MIL-P-46161). |
| Materials - Contacts | Wire: Beryllium copper (ASTM B197). Sleeves: Stainless steel (AMS-5514). |
| Materials - Polarization Keys | Glass-filled acetal plastic (MIL-P-46137). |
| Model Example (MIL-DTL-55302) | M55302/166A10X1 (MB-P, 2 Rows, 10 Contacts/Row, .300 Tail Length, Tin Lead Finish) |
| Model Example (Commercial) | MB2-120P-() (Mother Board, 2 Rows, 120 Total Contacts, Printed Circuit Termination) |
2412101651_Amphenol-M55302-172-02_C20216234.pdf
