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 (.8°C-in./W). The iZIF™ is a highly reliable patentpending 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 CTS’s thermal links provide superior retention because of the 6 to 8-segment fingers versus the 2 or 3-segment fingers available from other manufacturers. These thermal links are offered for TO-5s, TO-8s and TO-18s with or without BeO washer and other appropriate hardware. They provide an effective retainer and efficient thermal path between semiconductor and heat sinks or chassis. There is excellent transistor retention under high vibration and shock loads. The thermal links can be inserted and removed multiple times without loss of retention or damage to the finish over the entire JEDEC case diameter range. They can be installed with a rivet or eyelet, soldered to a PC pad or heat sink, mounted with a single screw or with a threaded stud and hex nut. FAN TOP SERIES A B Fan Tops “A” Dim. “B” Semiconductor Dim. Case Type *Ø °C/W Unplated Black Chem. .25 .25 .25 .25 .36 .50 .50 .75 .75 1.25 TO-18 TO-18 TO-5 TO-5 TO-5 150.0 150.0 81.1 81.1 57.7 TXBF-019-025U TXBF-019-025B N.A. TXCF-019-025U N.A. TXCF-019-025CB TXBF-032-025U TXBF-032-025B N.A. TXCF-032-025U N.A. TXCF-032-025CB TXBF2-032-036U TXBF2-032-036B N.A. .33 1.25 TO-8 41.0 TXBF2-050-033U TXBF2-050-033B .12 .12 1.25 1.25 TO-5 TO-8 56.6 56.6 TXCF-125-1U TXCF-125-2U *Natural convection, case-ambient mounted on G10 board 18 Part Number Black Cadmium TXCF-125-1CB TXCF-125-2B N.A. N.A. N.A. Material BeCu Brass BeCu Brass Brass Fan BeCu Retainer Brass Fan BeCu Retainer Brass Brass CTS ® THERMAL LINKS FOR TO-5, TO-8 AND TO-18 TRANSISTORS Thermal Link Retainers Without BeO Insulators Fig. # 1 2 3 3 4 5 6 7 7 8 Part Number Semiconductor Case Type Black Cadmium Finish Dull Nickel Finish TO-18 TO-18 TO-18 TO-18 TO-18 TO-5 TO-5 TO-5 TO-5 TO-5 TXBE-019-021B TXB2P-019-028B TX1807B TX1807-1B TX1847B TXBE-032-031B TXB2P-032-037B TX0507-1B TX0507-2B TX0547B TXBE-019-021ND TXB2P-019-028ND TX1807ND TX1807-1ND TX1847ND TXBE-032-031ND TXB2P-032-037ND TX0507-1ND TX0507-2ND TX0547ND Mounting Method Rivet/Solder 2-56 Screw 4-40 Stud 6-32 Stud 2-56 Hex Nut Rivet/Solder 4-40 Screw 6-32 Stud 10-32 Stud 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 Fig. # 1 1 2 2 3 4 5 5 6 6 7 8 Part Number Semiconductor Case Type Black Cadmium Finish Dull Nickel Finish TO-18 TO-18** TO-18 TO-18 TO-18 TO-18 TO-5 TO-5** TO-5 TO-5 TO-5 TO-5 TXP1803B TXP1808B TX1806B TX1806-1B TX1822B — TXP0503B TXP0508B TX0506-1B TX0506-2B TX0522B — TXP1803ND TXP1808ND TX1806ND TX1806-1ND TX1822ND TX1805-ND TXP0503ND TXP0508ND TX0506-1ND TX0506-2ND TX0522ND TX0505-ND Mounting Method 2-56 Screw 2-56 Screw 4-40 Stud 6-32 Stud 2-56 Hex Nut Solder 4-40 Screw 4-40 Screw 6-32 Stud 10-32 Stud 4-40 Hex Nut 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 Black Cadmium Finish Dull Nickel Finish TXBE-050-028 TXB2P-050-037 TXBE-045-028B TXB2P-045-037B TXBE-050-028B TXB2P-050-037B TXBE-055-028B TXB2P-055-037B Mounting Method TXBE-045-028ND Solder, Epoxy, Rivet TXB2P-045-037ND 4-40 Screw TXBE-050-028ND Solder, Epoxy, Rivet TXB2P-050-037ND 4-40 Screw TXBE-055-028ND Solder, Epoxy, Rivet TXB2P-055-037ND 4-40 Screw Max. Weight (Grams) Case Diameter 1.5 4.5 1.5 4.5 1.5 4.5 0.455 0.455 0.500 0.500 0.550 0.550 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