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Quality Bel Fuse 142-1000-001 factory
Quality Bel Fuse 142-1000-001 factory

Bel Fuse 142-1000-001

Manufacturer: Bel Fuse
Model Number: 142-1000-001
Minimum Order Quantity: 25
Packaging Details: -
Delivery Time: 6-13 working days
Stock: 2000
Description: Coaxial Connector (RF) Accessories RoHS
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Product Description

Product Overview

This product line offers field-replaceable SMA 50 Ohm connectors and hermetic seal feedthroughs designed for transitioning microstrip circuitry to coaxial transmission lines. These connectors are engineered for ease of installation and replacement without compromising the hermeticity of the circuit housing, unlike integrated hermetic seal connectors. They are suitable for applications requiring a reliable transition from microstrip to coaxial lines, with various models tailored for different cable types and performance requirements. The hermetic seal feedthroughs are designed to be mounted flush with the housing for optimal electrical performance, achieving 50 Ohms impedance with air or Teflon insulation.

Product Attributes

  • Brand: Johnson ComponentsTM (part of Cinch Connectivity Solutions)
  • Origin: USA
  • Certifications/Standards: MIL-STD-202, MIL-C-39012
  • Material Specifications:
    • Bodies: Brass per QQ-B-626, 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.)
    • Contacts (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 Tefzel per ASTM D 3159, or PFA 340 per ASTM
    • 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 or brass per QQ-B-613, gold plated per MIL-G-45204 (.00001" min.) or nickel plated per QQ-N-290
    • Mounting Hardware: Brass per QQ-B-626 or QQ-B-613, gold plated per MIL-G-45204 (.00001" min.) or nickel plated per QQ-N-290
    • Seal Rings: Silicone rubber per ZZ-R-765
    • EMI Gaskets: Conductive silicone rubber per MIL-G-83528, Type M
    • Nut Retention Spring: Beryllium copper per QQ-C-533 (Unplated)
  • Plating: All gold plated parts include a .00005" min. nickel underplate barrier layer.

Technical Specifications

Specification Details
Impedance 50 Ohms
Frequency Range DC to 26.5 GHz (Straight semi-rigid cable connectors and field replaceable connectors)
Hermetic Seal Feedthrough Notes Mount flush as possible with housing. Slight chamfer may be used if completely filled with solder. Dimensions achieve 50 Ohms with air or Teflon insulator.
Hermetic Seal Feedthrough Electrical
  • Impedance: 50 Ohms
  • Frequency Range: DC to 26.5 GHz
  • Working Voltage: 250 Vrms max at sea level
  • Dielectric Withstanding Voltage: 500 Vrms min at sea level
  • Insulation Resistance: 5000 Megohm min
  • Insertion Loss: .015F dB max (F in GHz)
Hermetic Seal Feedthrough Environmental
  • Hermeticity: 1x10-8 cc/sec at one atmosphere
  • Solderability: MIL-STD-202, Method 209
  • Operating Temperature: -55C to 165C
Hermetic Seal Feedthrough Part Numbers & Dimensions (Nominal)
Part Number Item 1 (Kovar) Item 2 (Glass) Item 3 (Kovar) A B C D E
142-1000-001 Gold pl .00005 min over Nickel pl .000005 min Corning 7052 Gold pl .00005 min over Nickel pl .000005 min .070 (1.78) .0625 (1.59) .180 (4.57) .0985 (2.50) .012 (.30)
142-1000-002 Gold pl .00005 min over Nickel pl .000005 min Corning 7070 Gold pl .00005 min over Nickel pl .000005 min .072 (1.83) .0625 (1.59) .180 (4.57) .0985 (2.50) .015 (.38)
142-1000-003 Gold pl .00005 min over Nickel pl .000005 min Corning 7070 Gold pl .00005 min over Nickel pl .000005 min .072 (1.83) .0600 (1.52) .180 (4.57) .1100 (2.79) .018 (.46)
142-1000-004 Gold pl .00005 min over Nickel pl .000005 min Corning 7052 Gold pl .00005 min over Nickel pl .000005 min .070 (1.78) .0600 (1.52) .203 (5.16) .1580 (4.01) .020 (.51)
Hermetic Seal Mounting Hole Detail (Dimensions)
Part Number F G H H
142-1000-001 .012 (0.30) .063 (1.60) .102 (2.59) .028 (0.71) .039 (0.99)
142-1000-002 .015 (0.38) .063 (1.60) .102 (2.59) .035 (0.89) .049 (1.24)
142-1000-003 .018 (0.46) .060 (1.52) .114 (2.90) .042 (1.07) .059 (1.50)
142-1000-004 .020 (0.51) .060 (1.52) .162 (4.11) .046 (1.17) .065 (1.65)
SMA - 50 Ohm Connectors Frequency Range
  • Dummy loads: 0-2 GHz
  • Flexible cable connectors: 0-12.4 GHz
  • Uncabled receptacles, RA semi-rigid and adapters: 0-18.0 GHz
  • Straight semi-rigid cable connectors and field replaceable connectors: 0-26.5 GHz
SMA - 50 Ohm Connectors VSWR (f = GHz)
Connector Type Straight Cabled Right Angle Cabled
RG-178 cable 1.20 + .025f 1.20 + .03f
RG-316, LMR-100 cable 1.15 + .02f 1.15 + .03f
RG-58, LMR-195 cable 1.15 + .01f 1.15 + .02f
RG-142 cable 1.15 + .01f 1.15 + .02f
LMR-200, LMR-240 cable 1.10 + .03f 1.10 + .06f
.086 semi-rigid 1.07 + .008f 1.18 + .015f
.141 semi-rigid (w/contact) 1.05 + .008f 1.15 + .015f
.141 semi-rigid (w/o contact) 1.035 + .005f N/A
Jack-bulkhead jack adapter and plug-plug adapter 1.05 + .01f N/A
Jack-jack adapter and plug-jack adapter 1.05 + .005f N/A
Uncabled receptacles, dummy loads N/A N/A
Field replaceable (see page 59) N/A N/A
SMA - 50 Ohm Connectors Working Voltage (Vrms maximum)
Connector Type Sea Level 70K Feet
RG-178 170 45
RG-316; LMR-100, 195, 200 250 65
RG-58, RG-142, LMR-240, .086 semi-rigid, uncabled receptacles, .141 semi-rigid w/o contact 335 85
.141 semi-rigid with contact and adapters 500 125
Dummy loads N/A N/A
SMA - 50 Ohm Connectors Dielectric Withstanding Voltage (VRMS minimum at sea level)
Connector Type Voltage (VRMS min)
RG-178 500
RG-316; LMR-100, 195, 200 750
RG-58, RG-142, LMR-240, .086 semi-rigid, field replaceable, uncabled receptacles 1000
.141 semi-rigid with contact and adapters 1500
.141 semi-rigid w/o contact, dummy loads N/A
SMA - 50 Ohm Connectors Corona Level (Volts minimum at 70,000 feet)
Connector Type Voltage (Volts min)
RG-178 125
RG-316; LMR-100, 195, 200 190
RG-58, RG-142, LMR-240, 086 semi-rigid, uncabled receptacles, .141 semi-rigid w/o contact 250
.141 semi-rigid with contact and adapters 375
Dummy loads N/A
SMA - 50 Ohm Connectors Insertion Loss (dB maximum)
  • Straight flexible cable connectors and adapters: 0.06 f (GHz), tested at 6 GHz
  • Right angle flexible cable connectors: 0.15 f (GHz), tested at 6 GHz
  • Straight semi-rigid cable connectors with contact: 0.03 f (GHz), tested at 10 GHz
  • Right angle semi-rigid cable connectors: 0.05 f (GHz), tested at 10 GHz
  • Straight semi-rigid cable connectors w/o contact: 0.03 f (GHz), tested at 16 GHz
  • Straight low loss flexible cable connectors: 0.06 f (GHz), tested at 1 GHz
  • Right Angle low loss flexible cable connectors: 0.15 f (GHz), tested at 1 GHz
  • Uncabled receptacles, field replaceable, dummy loads: N/A
SMA - 50 Ohm Connectors Insulation Resistance 5000 megohms minimum
SMA - 50 Ohm Connectors Contact Resistance (milliohms maximum)
Contact Type Initial After Environmental
Center contact (straight cabled connectors and uncabled receptacles) 3.0* 4.0*
Center contact (right angle cabled connectors and adapters) 4.0 6.0
Field replaceable connectors 6.0 8.0
Outer contact (all connectors) 2.0 N/A
Braid to body (gold plated connectors) 0.5 N/A
Braid to body (nickel plated connectors) 5.0 N/A
*N/A where the cable center conductor is used as a contact
SMA - 50 Ohm Connectors RF Leakage (dB minimum, tested at 2.5 GHz)
  • Flexible cable connectors, adapters and .141 semi-rigid connectors w/o contact: -60 dB
  • Field replaceable w/o EMI gasket: -70 dB
  • .086 semi-rigid connectors and .141 semi-rigid connectors with contact, and field replaceable with EMI Gasket: -90 dB
  • Two-way adapters: -90 dB
  • Uncabled receptacles, dummy loads: N/A
SMA - 50 Ohm Connectors RF High Potential Withstanding Voltage (Vrms minimum, tested at 4 and 7 MHz)
Connector Type Voltage (Vrms min)
RG-178 335
RG-316; LMR-100, 195, 200 500
RG-58, RG-142, LMR-240, .086 semi-rigid, .141 semi-rigid cable w/o contact, uncabled receptacles 670
.141 semi-rigid with contact and adapters 1000
SMA - 50 Ohm Connectors Power Rating (Dummy Load) 0.5 watt @ +25C, derated to 0.25 watt @ +125C
SMA - 50 Ohm Connectors Temperature Range -65C to +165C
SMA - 50 Ohm Connectors Thermal Shock MIL-STD-202, Method 107, Condition B
SMA - 50 Ohm Connectors Corrosion MIL-STD-202, Method 101, Condition B
SMA - 50 Ohm Connectors Cable Retention
Connector Type Axial Force* (lbs) Torque (in-oz)
RG-178 10 N/A
RG-316, LMR-100 20 N/A
LMR-195, 200 30 N/A
RG-58, LMR-240 40 N/A
RG-142 45 N/A
.086 semi-rigid 30 16
.141 semi-rigid 60 55
*Or cable breaking strength whichever is less.
SMA - 50 Ohm Connectors Durability 500 cycles minimum; 100 cycles minimum for .141 semi-rigid connectors w/o contact
SMA - 50 Ohm Connectors Engagement Design MIL-C-39012, Series SMA
SMA - 50 Ohm Connectors Engagement/Disengagement Force 2 inch-pounds maximum
SMA - 50 Ohm Connectors Mating Torque 7 to 10 inch-pounds
SMA - 50 Ohm Connectors Bulkhead Mounting Nut Torque 15 inch-pounds
SMA - 50 Ohm Connectors Coupling Proof Torque 15 inch-pounds minimum
SMA - 50 Ohm Connectors Coupling Nut Retention 60 pounds minimum
SMA - 50 Ohm Connectors Contact Retention 6 lbs. minimum axial force (captivated contacts); 4 inch-ounce minimum torque (uncabled receptacles)
SMA - 50 Ohm Connectors Shock MIL-STD-202, Method 213, Condition I
SMA - 50 Ohm Connectors Vibration MIL-STD-202, Method 204, Condition D
SMA - 50 Ohm Connectors Moisture Resistance MIL-STD-202, Method 106
Customer Drawings Available upon request
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