Document 606-1 Miniature SMT Transformers These miniature transformers were developed for use with Maxim RS-232/RS-485 interface ICs, and are suitable for gate drive and other power applications. They were designed to work with the MAX250, MAX251, MAX253 and MAX845 for providing power to the isolated side of the interface, and are also specified by Linear Technology, Sipex and others for use with their chipsets. They feature 1500 Vrms isolation between windings in a miniature surface mount package. Each transformer has a stainless steel cover that provides an excellent surface for automated placement. In addition to the standard parts shown, Coilcraft can produce custom transformers with voltage, inductance and DCR values to meet your specific requirements. For more information, contact Coilcraft. Volt-time DCR max (Ohms) Part Pri / sec Inductance product2 number1 voltage min (µH)typ (Vµsec) pri sec IsolationPri / secPri : sec pri-sec capacitanceTurns typ (pF)3 ratio4 (Vrms) Q4470-CL_ 5 V to 5 V 400 (1-3) 32 (1-3) S5394-CL_ 5 V to 10 V 400 (1-3) 32 (1-3) U6982-CL_ 3.3 V to 5 V 59 (1-3) 22 (1-3) 0.950 (1-3) 0.950 (1-3) 0.700 (1-3) 1500 (1-4) 1500 (1-4) 1500 (1-4) T6437-DL_ 5 V to 5V S5499-DL_ 5 V to 24 V T6650-DL_ 5 V to 24 V 1.010 (1-2, 3-4) 1.955 (8-5) 1500 (1,3-8) 0.540 (1-2, 3-4) 4.28 (8-7, 6-5) 1500 (1,3-8,6) 1.015 (2-3) 8.250 (7-6) 1500 (2-7) 1000 (1-4) 134 (1-4) 160 (1-4) 48 (1-4) 176 (2-3) 48 (2-3) 1. When ordering, please specify packaging code: Q4470-CLD Packaging:D =13″ machine-ready reel. EIA-481 embossed plastic tape (Size C: 1000 per full reel; Size D: 500 per full reel). B=Less than full reel. In tape, but not machine ready. To have a leader and trailer added ($25 charge), use code letter D instead. 2. Volt-time product is based on core area, number of primary turns and 4800 Gauss flux density. 3. Capacitance measured from full primary to full secondary at 200 kHz. 4. CT indicates center tap. 5. Calculated output power based on 150 kHz operating frequency. Power varies depending on application. 6. Ambient temperature range:–40°C to +85°C 7. Storage temperature range: Component: –40°C to +85°C Tape and reel packaging: –40°C to +80°C 8. Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between. 9. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. 1.25 (6-4) 0.950 (6-4) 1.800 (6-4) Power5 (W) Size 0.87 0.92 0.93 1 CT : 1.3 CT 0.25 C 1 CT : 1 0.25C 1 CT : 2.1 CT 0.75 C 1.88 1.59 1.25 1 CT : 11.5 D 1 CT : 5 CT 1.0 D 1 : 5 1.0D Chipset Linear Linear MaximMaximMaxim Sipex Sipex LT1952 LTC3900250/251 253/845 3535E SP3222 SP3232 Q4470-CL S5394-CL U6982-CL T6437-DL S5499-DL T6650-DL Q4470-CL 1 Pri 2 3 U6982-CL 6 1 5 Sec Pri 2 3 4 5 Sec S5499-DL 8 8 Pri 32 4 1 Sec 5 US +1-847-639-6400 [email protected] UK +44-1236-730595 [email protected] Taiwan +886-2-2264 3646 [email protected] China +86-21-6218 8074 [email protected] Singapore + 65-6484 8412 [email protected] Pri 2 3 4 1 7 Sec 6 5 6 Sec Pri 2 3 4 T6437-DL 1 S5394-CL 6 4 T6650-DL 2 7 Sec Pri 3 6 Document 606-1 Revised 05/06/09 © Coilcraft Inc. 2013 This product may not be used in medical or high risk applications without prior Coilcraft approval. Specification subject to change without notice. Please check web site for latest information. Document 606-2 Miniature SMT Transformers C Size Dot above pin 1 0.260 max 6,60 Q4470-CL, S5394-CL, U6982-CL 0.215 max 5,46 0.004 / 0,10 Recommended Land Pattern 0.050 sq 1,27 0.275 max 6,99 0.100 2,54 0.100 2,54 1 6 0.023 0,60 1 0.283 min 7,20 0.350 max 8,89 4 3 0.375 9,53 0.039 min 1,0 Bottom View Weight 510 – 550 mg Terminations Tin-silver over tin over nickel over phos bronze Packaging 1000 per 13″ reel Plastic tape: 16 mm wide, 0.34 mm thick, 12 mm pocket spacing, 5.33 mm pocket depth D Size Dot above pin 1 0.344 max 8,75 S5499-DL, T6437-DL, T6650-DL 0.215 max 5,46 0.004 / 0,10 0.415 min 10,55 0.500 max 12,70 0.500 12,70 0.075 1,905 0.023 0,60 Recommended Land Pattern 1 8 1 0.050 1,27 0.100 2,54 0.400 max 10,16 0.100 2,54 4 5 0.035 min 0,90 Bottom View Weight 0.98 – 1.1 g Terminations Tin-silver over tin over nickel over phos bronze Tape and reel 500 per 13″ reel Plastic tape: 24 mm wide, 0.36 mm thick, 16 mm pocket spacing, 6.13 mm pocket depth US +1-847-639-6400 [email protected] UK +44-1236-730595 [email protected] Taiwan +886-2-2264 3646 [email protected] China +86-21-6218 8074 [email protected] Singapore + 65-6484 8412 [email protected] Document 606-2 Revised 05/06/09 © Coilcraft Inc. 2013 This product may not be used in medical or high risk applications without prior Coilcraft approval. Specification subject to change without notice. Please check web site for latest information.