Mil-T-27E :: D e s c r i p t i o n Triad high reliability audio transformers provide the durability and precision required in today’s demanding designs. These transformers are available for a wide variety of applications. The line of Red Spec audio transformers is designed and constructed to meet the rigid requirements of MIL-T-27E. These transformers feature an epoxy molded case, gold plated leads and exceptional operation from 300 Hz to 100 kHz. :: S p e c i f i c a t i o n s Red Spec (MiL-T-27E) Frequency Response Ranges: 300 Hz to 100 kHz :: R e d S p e c P r i n t e d C i r c u i t A u d i o T r a n s f o r m e r s Section Type No. Mil Type No. Power Level in mW Matching Impedance Primary Secondary Max. Ma DC Unbalanced in Primary DC Resistance Primary Secondary Overall Turns Ratio Figure No. A SP-4 TF5S21ZZ 10 200,000 CT 1,000 CT 0.0 5,300.0 100.0 14.1:1.0 B SP-5 TF5S21ZZ 25 50,000 CT 1,000 CT 0.0 3,800.0 75.0 7.1:1.0 3 C SP-13 TF5S21ZZ 40 25,000 CT/20,000 CT 1,000/800 CT 0.5 1,700.0 115.0 5.0:1.0 3 SP-20 SP-21 SP-22 SP-29 SP-33 SP-42 SP-48 SP-49 SP-50 SP-51 SP-52 SP-66 SP-67 SP-68 SP-69 SP-70 TF5S21ZZ TF5S21ZZ TF5S21ZZ TF5S21ZZ TF5S21ZZ TF5S21ZZ TF5S21ZZ TF5S21ZZ TF5S21ZZ TF5S21ZZ TF5S21ZZ TF5S21ZZ TF5S21ZZ TF5S21ZZ TF5S21ZZ TF5S21ZZ 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 10,000 CT 10,000 CT 10,000 10,000 CT 1,000 150 CT 7,500 CT 300 CT 500 CT 900 CT 1,500 CT 10,000 CT 600 CT 10,000 600 600 1,200 CT 2,000 CT 2,000 CT/500§ 500 CT 50 12 12 600 600 600 600 10,000 CT 600 CT 10,000 CT/2,500§ 600 CT/150§ 600 1.0 1.0 1.0 1.0 3.0 10.0 1.0 7.0 3.0 4.0 3.0 1.0 3.0 1.0 3.0 3.0 1,050.0 1,050.0 1,050.0 1,050.0 145.0 18.0 796.0 41.0 67.0 104.0 168.0 1,000.0 72.0 1,000.0 72.0 72.0 200.0 330.0 146.0/168.0§ 80.0 8.0 2.7 2.9 98.0 98.0 96.0 92.0 1,300.0 92.0 565.0/650.0§ 40.0/45.0§ 92.0 2.88:1.0 2.24:1.0 4.48:1.0:1.0 4:47:1.0 4.4:1.0 3.54:1.0 25.0:1.0 1.0:1.42 1.0:1.1 1.22:1.0 1.58:1.0 1.0:1.0 1.0:1.0 2.1:1.0 2.0:1.0:1.0 1.0:1.0 3 3 4 3 1 2 2 2 2 2 2 3 3 4 4 1 SP-128 SP-310 TF5S21ZZ Shield Only • 0.1H • 5.0 15.0 • • 5 D E CT = Center Tap 3 § Split secondary :: O u t l i n e D i m e n s i o n s Te c h n i c a l N o t e s 1. Plug-in terminals are precision spaced to provide fixed mounting centers. Figure 1 2. Red Spec transformers are hi-pot tested at 1,000 VRMS. 3. 150 VDC working voltage. CT Primary Tap Primary - Tap Secondary Figure 2 Figure 3 4. Red Spec transformers feature small footprint base dimensions of .310 by .410 inch. 5. Pin diameter = .020 inch. Split Windings Figure 4 Inductor Figure 5 www.TriadMagnetics.com | 22520 B Temescal Canyon Road, Corona, CA 92883 | Phone 951-277-0757 | FAX 951-277-2757 7 | Audio Transformers A u d i o Tr a n s f o r m e r s