131-3701-(261,266) Spec Datasheet by Cinch Connectivity Solutions Johnson

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belfuse.com/cinch
50 Ohm SMB PC Mount
Straight Jack Receptacle
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Mounting Hole Layout
Mating Engagement for SMB Series per MIL-C-39012
NOTES
1. ID of contact to meet VSWR mating characteristics and connector
durability when mated with a dia .019 /0.53 male contact.
2. Must meet the force to engage and disengage when mated with
mating part.
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50 Ohm SMB PC Mount
Straight Jack Receptacle
Electrical Ratings
Impedance 50 ohm
Frequency Range Connectors 0 - 4 GHz
Dummy Loads 0 - 1 GHz
VSWR (f = GHz) Straight Cabled Right Angle Cabled
RG-178 Cable 1.30 + .04f 1.45 + .06f
RG-316, RG-58, .086 Semi Rigid Cable 1.25 + .04f 1.35 + 0.4f
Adapters 1.20 + .04f
Uncabled Receptacles, Dummy Loads N/A
Working Voltage (VRMS maximum)Connectors for Cable Type Sea Level 70,000 Feet
RG-178 250 60
RG-316, RG-58, .086 Semi Rigid, Uncabled
Receptacles, Adapters
335 85
Dummy loads N/A
Dielectric Withstanding Voltage
(VRMS minimum at Sea level)
Connectors for RG-178 750
Connectors for RG-316, RG-58, .086 Semi Rigid,
Uncabled Receptacles, Adapters
1000
Dummy Loads N/A
Corona Level (Volts minimum at 70,000ft)Connectors for RG-178 185
Connectors for RG-316, RG-58, .086 Semi Rigid 250
Uncabled Receptacles, Adapters, Dummy Loads N/A
Insertion Loss (dB maximum, tested at 1.5 GHz) Straight Cable Connectors 0.30 dB
Right Angle Cable Connectors 0.60 dB
Uncabled Receptacles, Adapters, Dummy Loads N/A
Insulation Resistance 1000 megohms minimum
Contact Resistance (milliohms max) Initial After Environmental
Center Contact (straight cabled connectors and
uncabled receptacles)
6.0 8.0
Center Contact (right angle cabled connectors and
adapters)
12.0 16.0
Outer Contact (Gold plated connectors) 1.0 1.5
Outer Contact (Nickel plated connectors) 2.5 3.5
Braid to Body (Gold plated connectors) 1.0 N/A
Braid to Body (Nickel plated connectors) 2.5 N/A
RF Leakage (dB minimum tested at 2.5 GHz) Cable Connectors -55 dB
Uncabled Receptacles, Adapters, Dummy Loads N/A
RF High Potential Withstanding Voltage (VRMS
minimum, tested at 4 and 7 MHz)
Connectors for RG-178 500
Connectors for RG-316, RG-58 700
Uncabled Receptacles and Adapters 600
Dummy Loads N/A
Power Rating (Dummy Load) 0.5 watt @ +25ºC, derated to 0.25 watt @ +125ºC
Avoid user injury due to misapplication. See safety advisory definitions inside front cover.
Technical Specifications
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© 2020 Cinch Connectivity Solutions pi-ccs-johnson-131-3701-261-v1
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inquiry@us.cinch.com
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50 Ohm SMB PC Mount
Straight Jack Receptacle
Mechanical Ratings
Engagement Design MIL-C-39012, Series SMB
Engagement / Disengagement Force 2lbs min to 14lbs max axial force
Contact Retention 4lbs min axial force (captivated contacts)
1 inch-ounce min torque (uncabled receptacles)
Cable Retention Axial Force* (pounds) Torque (in-oz)
Connectors for RG-178 10 N/A
Connectors for RG-316 20 N/A
Connectors for RG-58 40 16
Connectors for .086 Semi-Rigid 30 16
Durability 500 Cycles minimum
* Or cable breaking strength, whichever is less
Environmental Ratings
(Meets or exceeds the applicable paragraph of MIL-C-39012)
Temperature Range Connectors -65ºC to +165ºC
Dummy Loads -65ºC to +125ºC
Thermal Shock MIL-STD-202, Method 107, Condition B (N/A Dummy Loads)
Corrosion MIL-STD-202, Method 101, Condition B (N/A Dummy Loads)
Shock MIL-STD-202, Method 213, Condition B (N/A Dummy Loads)
Vibration MIL-STD-202, Method 204, Condition B (N/A Dummy Loads)
Material Specifications
Bodies Brass per QQ-B-626 or Zinc per ASTM B86-71, Gold Plated** per MIL-G-45204 .00001 min or
Nickel Plated per QQ-N-290
Contacts Male - Brass per QQ-B-626, Gold Plated per MIL-G-45204 .00003” min.
Female - Beryllium Copper per QQ-C-530, Gold Plated per MIL-G-45204 .00003” min
Insulators PTFE Fluorocarbon per ASTM D 1710 and ASTM D 1457 or Teflon PFA 340
Expansion Caps Brass per QQ-B-613, Gold Plated per MIL-G-45204 .00001” min. or Nickel Plated per
QQ-N-290
Crimp Sleeves Copper per WW-T-799, Gold Plated per MIL-G-45204 .00001” min. or Nickel Plated per
QQ-N-290
Mounting Hardware Brass (nuts) per QQ-B-626 or Phosphor Bronze (lockwashers) QQ-B-750, Gold Plated per
MIL-G-45204 .00001” min. or Nickel Plated per QQ-N-290
Cover Rings Phosphor Bronze per QQ-B-750, Gold Plated per MIL-G-45204 .00001 min. or Nickel
Plated per QQ-N-290.
** All gold plated parts include a .00005” min. nickel underplate barrier layer

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