www.TriadMagnetics.com
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22520 B Temescal Canyon Road, Corona, CA 92883
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Phone 951-277-0757
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FAX 951-277-2757
Audio Transformers
Mil-T-27E
Power Max. Ma DC Overall
Type Mil Type Level Matching Impedance Unbalanced DC Resistance Turns Figure
Section No. No. in mW Primary Secondary in Primary Primary Secondary Ratio No.
A SP-4 TF5S21ZZ 10 200,000 CT 1,000 CT 0.0 5,300.0 100.0 14.1:1.0 3
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 TF5S21ZZ 50 10,000 CT 1,200 CT 1.0 1,050.0 200.0 2.88:1.0 3
SP-21 TF5S21ZZ 50 10,000 CT 2,000 CT 1.0 1,050.0 330.0 2.24:1.0 3
SP-22 TF5S21ZZ 50 10,000 2,000 CT/500§ 1.0 1,050.0 146.0/168.0§ 4.48:1.0:1.0 4
SP-29 TF5S21ZZ 50 10,000 CT 500 CT 1.0 1,050.0 80.0 4:47:1.0 3
SP-33 TF5S21ZZ 50 1,000 50 3.0 145.0 8.0 4.4:1.0 1
SP-42 TF5S21ZZ 50 150 CT 12 10.0 18.0 2.7 3.54:1.0 2
D
SP-48 TF5S21ZZ 50 7,500 CT 12 1.0 796.0 2.9 25.0:1.0 2
SP-49 TF5S21ZZ 50 300 CT 600 7.0 41.0 98.0 1.0:1.42 2
SP-50 TF5S21ZZ 50 500 CT 600 3.0 67.0 98.0 1.0:1.1 2
SP-51 TF5S21ZZ 50 900 CT 600 4.0 104.0 96.0 1.22:1.0 2
SP-52 TF5S21ZZ 50 1,500 CT 600 3.0 168.0 92.0 1.58:1.0 2
SP-66 TF5S21ZZ 50 10,000 CT 10,000 CT 1.0 1,000.0 1,300.0 1.0:1.0 3
SP-67 TF5S21ZZ 50 600 CT 600 CT 3.0 72.0 92.0 1.0:1.0 3
SP-68 TF5S21ZZ 50 10,000 10,000 CT/2,500§ 1.0 1,000.0 565.0/650.0§ 2.1:1.0 4
SP-69 TF5S21ZZ 50 600 600 CT/150§ 3.0 72.0 40.0/45.0§ 2.0:1.0:1.0 4
SP-70 TF5S21ZZ 50 600 600 3.0 72.0 92.0 1.0:1.0 1
E
SP-128 TF5S21ZZ
• 0.1H • 5.0 15.0 ••5
SP-310 Shield Only
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Red Spec Printed Circuit Audio Transformers
CT = Center Tap § Split secondary
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Outline Dimensions
Technical Notes
1. Plug-in terminals are precision spaced to provide
fixed mounting centers.
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Description
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.
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Specifications
Frequency Response Ranges: 300 Hz to 100 kHz
Red Spec
(MiL-T-27E)
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
4. Red Spec transformers feature small footprint
base dimensions of .310 by .410 inch.
5. Pin diameter = .020 inch.
2. Red Spec transformers are hi-pot tested at 1,000 VRMS.
3. 150 VDC working voltage.
CT Primary Tap Primary - Tap Secondary
Split Windings Inductor
7
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Audio Transformers
