Amphenol 481 Series Rack and Panel Environmental Connectors Description The 481 Series is a Filter connector plug with either pintail or solder bucket type fixed pin contacts. These are designed to meet the mechanical and environmental requirements of MILC-24308. These connectors are available with filter, power grounding contacts and EMI sealing plugs or any combination thereof. Mating Connector Information 481 Series mate with all connectors conforming to MS 18269 and MS 18270 of MIL-C-24308 and Amphenol MIN-RAC 17(R) Series miniature connectors. Amphenol Introduction AMPHENOL's Filter connectors are a system of reliability engineered receptacles, plugs, contacts and accessories, designed to provide a wide range of performance and servicing features not previously available with ordinary EMI filtering connectors. These connectors are rugged enough to operate reliably under high physical stress, and in the demanding environmental conditions required of power connections. The patented stress isolated EMI filter is composed of a ceramic element attached to a sturdy contact in a way that dampens all connector stresses and virtually eliminates the chance of ceramic fracture due to vibration, thermal and physical shock. Once inserted in the connector, the filter contact is engaged by a Microstrip grounding plate designed to achieve maximum insertion loss and to inhibit resonances due to series inductance. FILTER HERE `D' BACKSHELL NOT HERE `D' The use of filter connectors has the following advantages: * * * * * Space saving Weight saving Reduction in solder connections Eliminates requirement for RFI screened box Provides low impedance ground plane for filter network BACKSHELL Design Features 1. One piece aluminium alloy shell with clear chromate finish over cadmium plate. Shell with increased flange width for improved shielding. 2. One panel cut-out for front and rear mounting. 3. Thermoset Inserts. 4. High temperature silicone rubber moisture seal. 5. Microstrip EMI grounding plate - plated copper alloy. 6. High temperature contact heat dissipator plate. 7. Stress isolated filter contact. 1 2 3 4 5 6 7 Insert Arrangements 1 2 3 4 5 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 11 12 13 6 7 8 9 9 10 11 12 13 14 15 14 15 16 17 18 19 20 21 22 23 24 25 SHELL SIZE 1 (9 CONTACTS) SHELL SIZE 2 (15 CONTACTS) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 SHELL SIZE 3 (25 CONTACTS) 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 27 28 29 30 31 32 33 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 SHELL SIZE 4 (37 CONTACTS) SHELL SIZE 5 (50 CONTACTS) 2 Dimensions A MAX B MAX X X X X X J MAX F MAX D MAX E MAX H MAX M MIN CONNECTOR AND CONTACT TYPE IDENTIFICATION SEE DETAIL A C NOM 2 MOUNTING HOLES O d CONTACT COLOUR CODE APPLICABLE TO SOLDER BUCKET TERMINATIONS ONLY NO COLOUR EMI FILTER BAND CONTACTS GREEN POWER COLOUR BAND CONTACTS RED COLOUR GROUND BAND CONTACTS DETAIL A K MAX G MAX APPLICABLE TO SOLDER CONTACTS ONLY L MAX SHELL SIZE 1 2 3 4 5 A 1.226 31.14 1.552 39.42 2.097 53.26 2.742 69.65 2.650 67.31 B .750 19.05 1.072 27.23 1.612 40.94 2.254 57.25 2.162 54.91 C D .984 24.99 1.312 33.32 1.852 47.04 2.500 63.50 2.406 61.11 E .400 10.16 .602 15.29 .514 13.05 .717 18.21 F G .236 5.99 H .960 24.38 .057 1.45 J .840 21.34 K L .728 18.49 1.048 26.62 1.589 40.36 2.236 56.79 2.135 54.23 M d .415 .063/.035 .125/.115 10.54 1.60/0.89 3.18/2.92 .534 13.56 DIMENSIONS SHOWN OVER BLUE BACKGROUND ARE IN MILLIMETRES Availability of Terminations .120 MAX 3.05 OB CONTACT PART NUMBER 481-57 DIM A DIA B 481-59 481-65 A MAX Assembly may comprise of connector fitted with all pintail or all solder bucket terminations, or a combination of both. Pintails may be obtained in different diameters, shapes and lengths to meet users' special requirements. Consult factory for further information 481-66 .140 .030 0.76 481-68 3.56 .028 0.71 481-92 481-67 481-61 .352 8.94 481-63 .245 6.22 Installation RECOMMENDED PANEL CUT OUTS (Front and Back Mounting) SHELL SIZE .120 DIA 3.05 .140 R. MAX TYP 3.56 1 2 C 3 10o A 4 B 5 0.790 B +.000 -.006 -0.15 0.987 C +.032 -.000 +0.81 0.440 20.07 25.07 11.18 1.110 1.315 0.440 28.19 33.40 11.18 1.650 1.855 0.440 41.91 47.12 11.18 2.300 2.502 0.440 58.42 63.55 11.18 2.215 2.410 0.554 56.26 61.21 14.07 A DIM MIN 3 Contact Specifications (Typical Contacts) CONTACT TYPE Contact Part Number FILTER Pintail Termination (See Page 3) 481-92 Solder Bucket Termination POWER 481-63 481-57 481-65 481-55 481-8 P1 P1 15MHz 4.5MHz 200KHz NA (-0) (+100%) 500 1750 50000 NA dc ac (rms) 200 125 200 125 100 50 500 300 dc ac (rms) 150 125 150 125 100 50 500 300 500 500 300 1000 Insulation Resistance (gigahoms) -25 C - Minimum 5 5 Current Rating (amperes) - maximum ** dc and low frequencies 3 Circuit Type Pass Band dc to 3dB cut off Frequency Fca = o Capacitance (Picofarads) @25 C - minimum at 1 KHz Working Voltage Sea Level (50mA max. charging current) o at 85 C o at 125 C 481-67 481-61 481-66 481-68 481-26 481-15 481-16 481-20 C LRC CLR NA o Dielectric Withstanding Voltage (dc) @ 25 C (50mA max. charging current) o 10 3 Filter rf Current (amperes) - minimum ** at any frequency 7.5 0.25 o Operating Temperature ** ( C) NA -55 to +150 o Insertion Loss (decibels) @ 25 C - minimum per MIL STD-220 (No Load) at (Performance in Mated Connectors) For Typical Insertion Loss See below (results will vary with temp. source and load impedance) Crosstalk Attenuation (decibels) (coupling between contacts) - minimum at 100MHz 0.1 MHz - - - 1 MHz - - 15 10 MHz - 5 33 100 MHz 20 40 45 1000MHz 35 55 50 Power to Filter Filter to Filter Same performance as for `C' version under Mil-Std-220 but improved filterfiltering offered for other Zs & Z1 values NA 30 60 * Consult AMPHENOL FACTORY if your filter needs are not reflected in this catalogue. ** Upper limit is the maximum allowable internal hot spot temperature resulting from any combination of electrical and load ambient. Typical Insertion Loss Tests performed in strict accordance with MIL-STD-220* (No-Load) on Contacts in a 481 Series connector mated with a Standard Non-Filter connector. CAUTION - Comparison with other filter connector manufacturers data may be misleading unless the following factors are taken into account: (1) is official (unmodified) MIL-STD-220 test method ultilised as basis for performance depicted? Modification will result in an apparent (ficticious) higher response! (2) is performance shown for filter contacts installed in connectors? If performance is based on discrete (single) contacts tested to MIL-STD-220, higher levels of I.L. will be indicated due to grounding limitations inherent in any connector design. CAPACITANCE VALUES 1750pF 500pF 50000pF 80 60 40 481.15, - 16, - 26 481-8 481-55 20 0 0.1 FREQUENCY (MHz) 1 10 100 1000 4 481 Series Ordering Information by Amphenol Part Number 481 - 1 3 25 0 - 100 Series Number 481 Contact Combination Code See Note 1 Connector Type 1 - Plug with Pin Contacts No. of Coaxial Contacts 0 Shell Size 1, 2, 3, 4, 5 No. of Size 20 Contacts 09, 15, 25, 37, 50 Contact Combination Codes Note 1 - Customer may select any combination of filter, power, grounding contacts or EMI sealing plugs. Contact Combination Code will be reflected by the last three digits in the above part number and will be assigned by the factory. Part Number Solder Bucket Filter Contact Power Contact Grounding Contact EMI Sealing Plug See Page 4 481-20 481-25 481-24 Pintail 481-68 481-59 Standard Contact Combination Codes - XXX - 100 - 200 - 300 - 400 - 500 Contains only 481-8 Filter Contacts Contains only 481-15 Filter Contacts Contains only 481-16 Filter Contacts Contains only 481-26 Filter Contacts Contains only 481-55 Filter Contacts Notice: Products are sold subject to Amphenol's Conditions of Sale ("the standard conditions"). All specifications and statements contained herein are believed to be correct at the time of printing but no representation or warranty, express or implied, is given as to any specification or statement contained herein. Product specifications including performance characteristics are typical only and subject to deviation. Specifications are also subject to change without notice. Users should not assume that all safety measures are indicated or that other measures may not be required. No representation or warranty, express or implied, is given that any use of products (including any stated or suggested use) does not infringe any patent, registered design or other third party rights and no stated or suggested use of products can be taken to recommend any such infringement. Amphenol Thanet Way, Whitstable, Kent. CT5 3JF Tel: 01227 773200 Fax: 01227 276571 5