CTS iZIF HEAT FRAME GENERAL DESCRIPTION The iZIF is a custom aluminum heat frame that integrates the PCB retainer for improved structural integrity and thermal efficiency (.8C-in./W). The iZIF is a highly reliable patent- pending design for rugged military and aerospace circuit card applications. It features a quarter-turn lock, uniform clamping pressure, and can be sized to fit small daughter cards up to 9U VME. A bottom plate may also be added for additional cooling and structural integrity. The iZIF features a 1/8 stainless steel socket head cap rod with beryllium copper spring. A variety of finishes are available such as chemical film, black anodize, and electroless nickel. THERMAL LINKS GENERAL DESCRIPTION CTSs thermal links provide superior retention because There is excellent transistor retention under high of the 6 to 8-segment fingers versus the 2 or 3-segment vibration and shock loads. The thermal links can be fingers available from other manufacturers. These thermal inserted and removed multiple times without loss of links are offered for TO-5s, TO-8s and TO-18s with or retention or damage to the finish over the entire JEDEC without BeO washer and other appropriate hardware. case diameter range. They can be installed with a rivet or They provide an effective retainer and efficient thermal eyelet, soldered to a PC pad or heat sink, mounted with a path between semiconductor and heat sinks or chassis. single screw or with a threaded stud and hex nut. FAN TOP SERIES A B Fan Tops Part Number A B Semiconductor Dim. Dim. Case Type * C/W Unplated Black Cadmium Black Chem. Material .25 .50 TO-18 150.0 TXBF-019-025U TXBF-019-025B N.A. BeCu .25 .50 TO-18 150.0 TXCF-019-025U N.A. TXCF-019-025CB Brass .25 .75 TO-5 81.1 TXBF-032-025U TXBF-032-025B N.A. BeCu .25 .75 TO-5 81.1 TXCF-032-025U N.A. TXCF-032-025CB Brass .36 1.25 TO-5 57.7 TXBF2-032-036U TXBF2-032-036B N.A. Brass Fan BeCu Retainer .33 1.25 TO-8 41.0 TXBF2-050-033U TXBF2-050-033B N.A. Brass Fan BeCu Retainer .12 1.25 TO-5 56.6 TXCF-125-1U TXCF-125-1CB N.A. Brass .12 1.25 TO-8 56.6 TXCF-125-2U TXCF-125-2B N.A. Brass *Natural convection, case-ambient mounted on G10 board 18CTS THERMAL LINKS FOR TO-5, TO-8 AND TO-18 TRANSISTORS Thermal Link Retainers Without BeO Insulators Part Number Mounting Fig. Semiconductor Case Type Black Cadmium Finish Dull Nickel Finish Method 1 TO-18 TXBE-019-021B TXBE-019-021ND Rivet/Solder 2 TO-18 TXB2P-019-028B TXB2P-019-028ND 2-56 Screw 3 TO-18 TX1807B TX1807ND 4-40 Stud 3 TO-18 TX1807-1B TX1807-1ND 6-32 Stud 4 TO-18 TX1847B TX1847ND 2-56 Hex Nut 5 TO-5 TXBE-032-031B TXBE-032-031ND Rivet/Solder 6 TO-5 TXB2P-032-037B TXB2P-032-037ND 4-40 Screw 7 TO-5 TX0507-1B TX0507-1ND 6-32 Stud 7 TO-5 TX0507-2B TX0507-2ND 10-32 Stud 8 TO-5 TX0547B TX0547ND 14-40 Hex Nut Dimensions are for reference use only. Contact CTS for dimensions with tolerances or standard part drawings. Thermal Link Retainers With BeO Insulators Part Number Mounting Fig. Semiconductor Case Type Black Cadmium Finish Dull Nickel Finish Method 1 TO-18 TXP1803B TXP1803ND 2-56 Screw 1 TO-18** TXP1808B TXP1808ND 2-56 Screw 2 TO-18 TX1806B TX1806ND 4-40 Stud 2 TO-18 TX1806-1B TX1806-1ND 6-32 Stud 3 TO-18 TX1822B TX1822ND 2-56 Hex Nut 4 TO-18 TX1805-ND Solder 5 TO-5 TXP0503B TXP0503ND 4-40 Screw 5 TO-5** TXP0508B TXP0508ND 4-40 Screw 6 TO-5 TX0506-1B TX0506-1ND 6-32 Stud 6 TO-5 TX0506-2B TX0506-2ND 10-32 Stud 7 TO-5 TX0522B TX0522ND 4-40 Hex Nut 8 TO-5 TX0505-ND Solder **BeO and thermal link are brazed together. Dimensions are for reference use only. Contact CTS for dimensions with tolerances or standard part drawings. THERMAL LINKS FOR TO-8s Thermal Link Retainers Without BeO Insulators Part Number Mounting Max. Weight Case Method (Grams) Diameter Black Cadmium Finish Dull Nickel Finish TXBE-045-028B TXBE-045-028ND Solder, Epoxy, Rivet 1.5 0.455 TXB2P-045-037B TXB2P-045-037ND 4-40 Screw 4.5 0.455 TXBE-050-028B TXBE-050-028ND Solder, Epoxy, Rivet 1.5 0.500 TXB2P-050-037B TXB2P-050-037ND 4-40 Screw 4.5 0.500 TXBE-055-028B TXBE-055-028ND Solder, Epoxy, Rivet 1.5 0.550 TXB2P-055-037B TXB2P-055-037ND 4-40 Screw 4.5 0.550 TXBE-050-028 TXB2P-050-037 Screw and shouldered nylon washer for .060 chassis included If mounting hardware not desired, deleted P from part number. Dimensions are for reference use only. Contact CTS for dimensions with tolerances or standard part drawings. 19