Self-Shielded Audio Transformers Using EP Geometry cores, these transformers provide excellent shielding. Electrical Specifications at 25OC Thru-hole EP7 Style Part Number T-30400 Impedance (Ohms) UNBAL. Insertion Frequency Response DC Loss (dB) (mA) (dB) (1) 600 / 600 0.0 0.7 Return Loss (dB) (2) 0.50 Pri. Sec. DCR max. DCR max. (Ω ) (Ω ) 18 31 39 Electrical Specifications at 25OC Thru-hole EP10 Style Part Number Isolation is 1500 Vrms minimum Longitudinal Balance is 60dB min. T-30401 Impedance (Ohms) UNBAL. Insertion Frequency Response DC Loss (dB) (mA) (dB) (1) 600 / 600 0.0 0.9 Return Loss (dB) (2) 0.50 Pri. Sec. DCR max. DCR max. (Ω ) (Ω ) 21 34 43 Frequency range: 300Hz to 3400Hz Electrical Specifications at 25OC Thru-hole EP13 Style Part Number .375 (9.53) MAX. .465 (11.81) MAX. EP7 Style Thru-hole UNBAL. Insertion Frequency Response DC Loss (dB) (mA) (dB) (1) 600 / 600 0.0 1.0 0.25 26 36 47 T-30403 900 / 900 0.0 1.0 0.25 26 44 58 T-30400 Schematic T-30401 Schematic 1 4 PRI 5 1 SEC. T-30402 & 30403 Schematic 5 PRI 2 SEC. 7 PRI SEC. .039 (0.99) 6 3 6 Pri. Sec. DCR max. DCR max. (Ω ) (Ω ) T-30402 .110 (2.79) MIN. .080 (2.03) Return Loss (dB) (2) 1. Insertion Loss measured at 1 kHz. 2. Return Loss measured at 300 Hz. .394 (10.00) MAX. .098 .024 (2.49) (0.61) Impedance (Ohms) 8 4 4 9 4 Bottom View 1 2 3 Dimensions in Inches (mm) .480 (12.19) MAX. .450 (11.43) MAX. EP10 Style Thru-hole .550 (13.97) MAX. .536 (13.61) MAX. EP13 Style Thru-hole .460 (11.68) MAX. .525 (13.34) MAX. .210 (5.33) TYP. .100 (2.54) TYP. .210 (5.33) TYP. .300 (7.62) TYP. .100 (2.54) TYP. Pin Diameter is 0.025 (0.64) 10 8 7 6 9 2 3 7 Pin Diameter is 0.025 (0.64) 6 5 Bottom View Bottom View 1 8 .400 (10.16) TYP. 4 Specifications subject to change without notice. Rhombus Industries Inc. 1 2 3 4 5 For other values & Custom Designs, contact factory. 15 EP - 10/98 15801 Chemical Lane, Huntington Beach, CA 92649-1595 Tel: (714) 898-0960 • Fax: (714) 896-0971 Self-Shielded Audio Transformers Using EP Geometry cores, these transformers provide excellent shielding. Electrical Specifications at 25OC Surface Mount Impedance EP7 Style (Ohms) Part Number T-30400G UNBAL. Insertion Frequency Response DC Loss (dB) (mA) (dB) (1) 600 / 600 0.0 0.7 Return Loss (dB) (2) 0.50 Pri. Sec. DCR max. DCR max. (Ω ) (Ω ) 18 31 39 Electrical Specifications at 25OC Surface Mount Impedance EP10 Style (Ohms) Part Number Isolation is 1500 Vrms minimum Longitudinal Balance is 60dB min. T-30401G UNBAL. Insertion Frequency Response DC Loss (dB) (mA) (dB) (1) 600 / 600 0.0 0.9 Return Loss (dB) (2) 0.50 Pri. Sec. DCR max. DCR max. (Ω ) (Ω ) 21 34 43 Frequency range: 300Hz to 3400Hz Electrical Specifications at 25OC Surface Mount Impedance EP13 Style (Ohms) Part Number Dimensions in Inches (mm) .370 (9.40) MAX. 600 / 600 0.0 1.0 0.25 26 36 47 900 / 900 0.0 1.0 0.25 26 44 58 1. Insertion Loss measured at 1 kHz. 2. Return Loss measured at 300 Hz. T-30400G Schematic .375 (9.53) MAX. .413 (10.5) .025 (0.64) 6 2 SEC. 7 PRI 8 4 .522 (13.26) MAX. EP10 Style Surface Mount EP13 Style Surface Mount .525 (13.34) 4 PRI .492 (12.5) .465 MAX. (11.8) MAX. .098 (2.50) .575 (14.6) .567 (14.4) Suggested Pad Layout 5 SEC. 4 9 .505 (12.83) .490 (12.45) .469 (11.9) MAX. 5 T-30402 & 30403G Schematic 1 SEC. 3 .432 (10.97) MAX. EP7 SM 4 PRI .34 (8.6) 6 T-30401G Schematic 1 .028 (0.70) Pri. Sec. DCR max. DCR max. (Ω ) (Ω ) T-30403G .025 (0.64) .098 (2.50) Return Loss (dB) (2) T-30402G .375 (9.53) MAX. EP7 Style Surface Mount UNBAL. Insertion Frequency Response DC Loss (dB) (mA) (dB) (1) .028 (0.70) .100 (2.54) .532 (13.51) MAX. .028 (0.70) .516 (13.1) MAX. .025 (0.64) .675 (17.15) .663 (16.85) .594 (15.10) 1 .100 (2.54) TYP. 2 3 .050 (1.27) TYP. .075 (1.905) TYP. Specifications subject to change without notice. Rhombus Industries Inc. .516 (13.1) .715 (18.15) 8 EP10 SM 1 7 Suggested Pad Layout 2 6 .100 (2.54) TYP. 4 9 8 3 5 10 .050 (1.27) TYP. For other values & Custom Designs, contact factory. 16 Suggested Pad Layout 1 2 .100 (2.54) TYP. 3 4 7 6 .100 (2.54) TYP. EP13 SM .050 (1.27) TYP. 5 .100 (2.54) TYP. EP - 10/98 15801 Chemical Lane, Huntington Beach, CA 92649-1595 Tel: (714) 898-0960 • Fax: (714) 896-0971 Self-Shielded Audio Transformers Built with Ferrite EP Geometry cores, these transformers provide excellent shielding. T-30404 & 30405 Schematic 1 T-30406 & 30408 Schematic 5 2 T-30407 & 30409 Schematic 7 1 Isolation is 1500 Vrms minimum PRI Longitudinal Balance is 60dB minimum SEC. PRI SEC. 2 Frequency range: 300Hz to 3400Hz 8 4 4 7 4 PRI 9 9 Custom Designs Available SEC. 5 Electrical Specifications at 25OC Thru-hole EP17 Style Part Number Impedance (Ohms) UNBAL. Insertion Frequency Response DC Loss (dB) (mA) (dB) (1) Return Loss (dB) (2) Pri. Sec. DCR max. DCR max. (Ω ) (Ω ) T-30404 600 / 600 2.5 1.0 0.25 26 45 58 T-30405 900 / 900 2.5 1.0 0.25 26 55 71 Electrical Specifications at 25OC Thru-hole EP20 Style Part Number Impedance (Ohms) UNBAL. Insertion Frequency Response DC Loss (dB) (mA) (dB) (1) Return Loss (dB) (2) Pri. Sec. DCR max. DCR max. (Ω ) (Ω ) T-30406 600 / 600 5.0 0.8 0.25 26 27 36 T-30407 600CT / 600 5.0 0.8 0.25 26 27 36 T-30408 600 / 900 5.0 0.8 0.25 26 27 44 T-30409 900CT / 600 5.0 0.8 0.25 26 33 36 1. Insertion Loss measured at 1 kHz. 2. Return Loss measured at 300 Hz. Dimensions in Inches (mm) .740 (18.80) MAX. .630 (16.00) MAX. EP17 Style Thru-hole .200 (5.08) TYP. .200 (5.08) TYP. 8 7 6 5 2 3 .200 (5.08) TYP. .600 (15.24) TYP. .200 (5.08) TYP. Pin Diameter is 0.025 (0.64) 10 9 Pin Diameter is 0.025 (0.64) 8 7 6 4 5 .700 (17.78) TYP. Bottom View 4 1 Specifications subject to change without notice. Rhombus Industries Inc. .700 (17.78) MAX. EP20 Style Thru-hole Bottom View 1 .860 (21.84) MAX. .975 (24.77) MAX. .680 (17.27) MAX. 2 3 For other values & Custom Designs, contact factory. 17 EP - 10/98 15801 Chemical Lane, Huntington Beach, CA 92649-1595 Tel: (714) 898-0960 • Fax: (714) 896-0971