CURRENT SENSE TRANSFORMER Turns Ratio ( + 1% ) Designed for Switching Power Supply Applications 1 : 100 Electrical Specifications at 25OC Primary Winding furnished PARAMETER MIN. Secondary Inductance MAX. UNITS 20 mH Secondary DC Resistance 1.40 ohms Primary Unipolar Amp-Microsecond 300 AµS Primary Bipolar Amp-Microsecond 600 AµS Isolation (HI-POT) 3750 Flammability: Materials used in the production of these units meet requirements of UL94-VO and IEC 695-2-2 needle flame test. VRMS Terminating Resistance = 100Ω Physical Dimensions inches (mm) Maximum ratings specified with rated secondary terminating resistance and 1 turn. .900 (22.86) MAX. .700 (17.78) MAX. Amp-µsec rating of primary equals volt-µsec rating of secondary when secondary is terminated into rated resistance. Maximum operating temperature 1050 C. .700 (17.78) MAX. SCALE FACTOR: VOUT (Volts per Amp) 1 Volt @ rated terminating resistance 0.5 Volts @ 1/2 rated terminating resistance 2.0 Volts @ 2 times rated terminating resistance 20 Amps maximum suggested peak sense current @ 40% duty cycle 400C temperature rise Frequency range 20 kHz and greater .170 (4.31) MIN. .010 (0.25) MIN. .700 (17.78) MAX. .500 (12.76) TYP. 2 Bottom View PRIMARY Leads: 16AWG (.0508") SECONDARY Leads: 20AWG (.0320") 5 1 3 SCHEMATIC 1 3 PRI 2 SEC 5 RHOMBUS P/N: T-20101 CUST P/N: DATE: 5/10/00 Rhombus Industries Inc. Transformers & Magnetic Products NAME: SHEET: 1 OF 1 15801 Chemical Lane, Huntington Beach, CA 92649 Phone: (714) 898-0960 FAX: (714) 896-0971 www.rhombus-ind.com