HIGH FREQUENCY MAGNETICS T1/E1 Single THT Shielded Hardened Transformer TM00122 • Designed for T1 carrier applications at 1.544 Mbps • Compatible with water-soluble flux, total-immersion cleaning, and machine insertion • Typical application is to isolate telecom equipment such as CSUs and office repeaters from the T1line • Shielded transformer reduces EMI • Designed for 100Ω terminating impedances • Minimum interwinding breakdown voltage of 1000 Vrms • Meets IEC-695, 2-2 flammability requirements • Qualified per Bellcore TR-TSY-000357-1 • Maximum ac current rating is 140mA for winding (6 - 7) and 280mA for winding (4 - 1) • Winding (4 - 1) is hardened to handle 6 amp current for one second with no damage ELECTRICAL SPECIFICATIONS at 25° C Turns Ratio ± 2% Part Number Primary Inductance* mH min DCR Ω max Leakage Inductance µH max Pri : Sec 2664AM 1 : 1 CT 1.5 3.5 Interwinding Capacitance pFmax Pri Sec 1.0 0.5 5 with terminal 5 grounded * Measured at 10 kHz, 0.1 Vac SCHEMATIC 2664AM 6 S 4 2 CT 3 7 Primary 5 1 Secondary Note: Noise suppression is improved by connecting the shield, terminal 5, to equipment frame ground. ©2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00 Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com T1-49 HIGH FREQUENCY MAGNETICS T1/E1 Single THT Shielded Hardened Transformer TM00122 MECHANICAL 2664AM 0.31 [7.87] max 0.110 [2.79] 0.023 [0.58] Sq, typ, Phosphor bronze solder-coated 0.100 [2.54] centers 0.500 [12.7] max Terminal 1 ID 1 2 3 4 0.400 [10.16] max 0.250 [6.35] 8 7 6 5 Note: Unless otherwise specified, dimensions are nominal and in inches [millimeters]. ©2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00 CORPORATE FAR EAST EUROPE Bel Fuse Inc. 198 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com Bel Fuse Ltd. 8F / 8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel 852-2328-5515 Fax 852-2352-3706 www.belfuse.com Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Suite G7, Preston Lancashire, PR1 8UD, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com T1-50