421-671 Low Loss RG 402 Equivalent Section 10 Low Loss RG 402 Equivalent In applications that require the bendability of solid dielectric, but with the low loss that only a low density Teflon dielectric offers even at high temperatures, Storm Products' new 421-671 can withstand the heat. This cable exhibits loss that is 30% lower than the MIL-C-17 / 130 limit at 18GHz and 25 C. This RG402 equivalent performs when bent around a mandrel diameter as small as.25 inches, even up to 200 C. Use 421-671 in almost any application where loss is critical, but where space is at a premium. In addition to superior attenuation response, 421-671 has many other advantages including: EXCELLENT THERMAL STABILITY Temperatures that at best would extrude solid PTFE dielectric, degenerating connector electrical performance, and at worst rupture RG402 tubing, have appreciably no effect on 421-671. Even when high temperature solder is required for a high reliability application, the dielectic will not shift, ensuring that there will be no failures due to extrusion, such as an air gap filled with dielectric, or a cracked solder joint. IMPROVED VSWR OVER TEMPERATURE RESPONSE The 421-671 cable dielectric will not shift when exposed to temperatures as high as 475 F. This results in very low VSWR variations over operating temperatures, usually under 2%. IMPROVED PHASE STABILITY Cable Relative Delay Phase Shift in PPM.065 25 C to -40 C 25 C to 100 C 421.671 1,950 365 RG402 RG402 3,550 1,240 421-671 BENDABILITY 475 F for 60 seconds 421-671 passes the bendability requirement for MIL-C-17/130C. This cable can be used in assemblies requiring centerline bend radii as small as.32 inches, with VSWR as low as 1.25:1, depending upon degree and number of bends. Bendability combined with excellent phase and thermal stability make 421-671 an ideal candidate for use in delay line applications. FITS ALL RG402 CONNECTORS Unlike some specialty cable products, 421-671 complies with MIL-C-17/130 specifications 1, therefore along with being made from the most reliable materials, it will also accept standard connector products designed for RG402, including crimp-on designs. 421-671.250 Diameter Mandrel RG402 FOR APPLICATIONS WHERE PHASE STABILITY IS CRITICAL, REFER TO THE "MICROPOROUS PTFE COAX" SECTION OF THIS CATALOG. NOT RECOMMENDED FOR CONNECTORS USING CABLE CENTER CONDUCTORS AS CENTER PIN. 1 421-671 low density PTFE dielectric complies with MIL-C-17 type F-5 dielectric specifications.
TECHNICAL DATA Electrical Attenuation Data 421-671: ATTENUATION DATA MEASURED AT 25 C AND AT SEA LEVEL db/ 100 foot 8 7 6 5 4 3 2 1 MIL-C-17/130 Limit 1 3 5 7 9 11 13 15 17 19 421-671 was designed to easily satisfy all environmental and mechanical specifications from MIL-C-17/130. So, any system which uses RG402 can benefit from the 421-671 electrical advantages, and be assured of a mechanical match. Impedance (ohms) 50 ± 2 Velocity (percent) 74% Frequency Range 26.5 GHz Capacitance 27.4 pf/ft Delay 1.37 ns/ft Max. Operating Voltage 1900 VRMS Temperature Range -50 C to +250 C Power Rating complies with MIL-C-17/130C limit Frequency (GHz) 421-671 All figures are nominal unless otherwise stated Mechanical Outer Diameter.141 ±.002 Center Conductor Diameter.036 ±.0005 Weight 2.8 lbs/100ft Min. Centerline Bend Radius 0.32 inches Section 10 Low Loss RG 402 Equivalent Section 10
Cable Assembly Insertion Loss 421-011:.125" (3.18MM) DIAMETER CABLE. EASY TO ROUTE, LIGHTER WEIGHT, VERY DURABLE. db 421-010:.210" (5.33MM) DIAMETER CABLE. INSERTION LOSS IS FAR SUPERIOR TO RG 402/U. db db 12.00 1 8.00 6.00 4.00 2.00 5.00 4.50 4.00 3.50 3.00 2.50 2.00 1.50 1.00 0.50 Typical Insertion Loss for 421-011 Cable Assemblies 1 4 7 10 13 16 19 22 25 28 31 34 37 40 Frequency (GHz) For performance up to 50Ghz consult factory. Typical Insertion Loss for 421-010 Cable Assemblies 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Frequency (GHz) 10ft 9ft 8ft 7ft 6ft 5ft 4ft 3ft 2ft 1ft 10ft 9ft 8ft 7ft 6ft 5ft 4ft 3ft 2ft 1ft Section 1 '90 Series' Flexible Cables
ELECTRICAL PROPERTIES All figures are nominal unless otherwise stated. MECHANICAL PROPERTIES All figures are nominal unless otherwise stated. Cable Properties Part Number (421-XXX) * - 193-069 - 298-673 - 336-227 - 202 Impedance (Ohms) 50 ± 2 50 ± 2 50 ± 2 50 ± 2 50 ± 2 50 ± 2 50 ± 2 Capacitance (pf/ft) 26.5 25.7 25.4 27.64 25.33 23.75 23.3 Velocity 78% 78% 81% 73% 80% 84% 84% Cut-off freq. (GHz) 75 46 36 26 20 13 10 Delay 1.30 1.30 1.26 1.40 1.27 1.21 1.21 Consult factory before using this data for delay lines Dielectric withstand -VRMS 2000 3500 5000 6000 6000 8000 9000 Attenuation Power handling ** To calculate assembly insertion loss, see page 10. See charts next page** See charts next page RG 402 EQUIVALENT - CABLE PART NUMBER 421-671, INFORMATION CAN BE FOUND ON PAGE 62. Part Number (421-XXX) - 193-069 - 298-673 - 336-227 - 202 Cable diameter (in).086.116.141.180.250.375.502 Center conductor dia. (in).020.0315 0.043.0508.074.117.153 Min. center line bend (in).250.375.437.540.750 1.50 2.25 Weight ( lbs/100ft) 1.53 2.22 2.75 4.44 9.15 10.7 19.0 Max. temperature rating ( C) 200 200 200 200 200 200 200 Outer conductor material Cu Cu Cu Cu Cu Al Al NOTE - The minimum bend radius specified is a limit for mechanical consideration, i.e. the cable may physically break at this limit. Electrical changes as a result of bending may occur at somewhat larger radii and are a function of the number of bends in a cable and their location. Please consult your Storm Sales Engineer for further information. Section 9 High Performance Semi-Rigid Cable Section 9
Section 9 High Performance Semi-Rigid Cable Attenuation Data ATTENUATION FOR CABLES 421-193, RG 405, AND 421-069 db/100 foot 18 16 14 421-193 12 10 8 6 4 2 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 Frequency GHz ATTENUATION FOR CABLES 421-298, AND RG402 db/100 foot 90 80 70 RG 402 60 50 421-298 40 30 20 10 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Frequency GHz
Straight Cable Plug SMA Connectors Cable P/N A Dia. B Dia. Connector Cable Number Connector 421-193.090.125 50-030P 421-069.120.155 50-375P 421-336 50-155P 421-298.145.180 50-024P RG 401 RG 402.145.180 50-039P Straight Cable Jack Cable Number Connector 421-336 50-382J Straight Cable Plug Straight Cable Jack Cable P/N A Dia. B Dia. Connector 421-298.145.180 50-381J PLEASE CONSULT FACTORY FOR DIMENSIONS AND WEIGHTS Section 9 High Performance Semi-Rigid Cable Section 9
Section 12 Custom Applications and Solutions Delay Line Cable Alternatives Precision Delay Lines feature minimal delay changes over temperature, low insertion loss, and a wide operating temperature range. These low density dielectric semi-rigid cables can be packaged in a wide variety of configurations (consult the factory for special designs). Additionally, microporous dielectric cables may be bent around a tighter minimum bend radius than both TFE Spline or Boron doped TFE dielectric cables, and are much less expensive than SiO2 cable. Microporous dielectric cable is an excellent choice for delay standards. 50 Nanoseconds @ 10 GHz Outer Attenuation Phase Min. Bend Length Weight Dielectric Cable Diameter (db) db/ns Stability Radius (lbs) 421-193.086 24.90.498 Best.60 38.14.60 421-193-LW.077 24.90.498 Best.60 38.14.31 421-069.116 15.50.310 Best.70 38.49.90 421-069-LW.109 15.50.310 Best.70 38.50.65 421-298.141 12.00.240 Best 1.00 39.90 1.10 421-671.141 12.00.240 *.32 36.42 1.00 421-298-LW.135 12.00.240 Best 1.00 39.90.90 421-336.250 5.60.112 Best 2.00 39.37 3.60 Solid Microporous RG-405.086 26.10.522 Note"A".20 34.80.50 RG-402.141 14.60.292 Note"A".35 34.80 1.10 RG-401.250 9.00.180 Note"A".50 34.80 3.50 * See page 62 The minimum centerline bend radius is recommended for maintaining a VSWR of approximately 1.25:1. Smaller radii are possible, but not without the risk of degrading VSWR. "A" At higher temperatures, 21 to 120 degrees C, microporous PTFE dielectric cable has slightly better phase response than solid PTFE dielectric cable. However, from 21 C to -50 C microporous cable displays far superior phase response. Coaxial Connector Frequency Usage Chart Frequency 1 in GHz V U 2 3 4 8 12.4 15 18 26.5 30 40 50 H H L S C X KU K KA F F Connector Style =Operational Range Applicable MIL Specification Listed for reference only UHF * L SC MIL-C-39012/35/43 C MIL-C-39012/6/15 HN MIL-C-3643 N MIL-C-39012/1/5 Precision N MIL-C-39012/129/132 BNC MIL-C-39012/16/24 TNC MIL-C-39012/26/34 Precision TNC MIL-C-39012/112/116 SMB MIL-C-39012/67/72 SMC MIL-C-39012/73/78 SMA MIL-C-39012/79/83 SSMA * 3.5 mm * 7 mm IEEE 287 GMS * GPO * K-Style * 2.4 mm * * No MIL Designation