HIGH FREQUENCY MAGNETICS
Specialty Through Hole Shielded Transformer
TM00104
•
Operates as high frequency pulse transformer or as high frequency analog transformer in various telecom circuits requiring high voltage-step-up ratio Interwinding Electrostatic Shield provides low capacitance and high EMI suppression Minimum Interwinding Breakdown Voltage of 500 Vrms
• • •
Operating Temperature Range: -40° C to +85° C Meets IEC 695, 2-2 flammability requirements PWB Process Capability: Standard Printed Wiring Board assembly techniques, total-immersion cleaning Reliability testing: Shock, vibration, temperature cycling, temperature - humidity - bias
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•
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ELECTRICAL SPECIFICATIONS AT 25° C
Turns Ratio ±2% Part Number (4-8) : (5-7) (4-8) : (3-1) (3-1) (4-8) (3-1) Secondary Inductance1 µH Min DCR Ω max Secondary Leakage Inductance1 µH max Interwinding & Intershield Capacitance Inductance Unbalance % max
(3-1)
pF max2
pF max3
pF max4
(3-2)(2-1)
2741N2
1 : 3.0
1 : 3.17
660
0.78
2.4
3.0
4
15
20
0.2
1. measured at 100 kHz, 0.03 Vac 2. between (3-1) and (4-8) with 6 grounded 3. between (3-1) and 6 with (4-8) grounded 4. between (4-8) and 6 with (3-1) grounded
SCHEMATIC
2741N2
4
S
3 5 2 7
8
6 1 : 3.0 1 : 3.17
1
©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 T1-9
HIGH FREQUENCY MAGNETICS
TM00104
Specialty Through Hole Shielded Transformer
MECHANICAL
2741N2
0.56 (14.22) MAX 0.46 (11.68) MAX
TERMINAL 1 IDENTIFIER
0.35 (8.89) MAX
0.110 (2.79) ±0.010 (0.25)
0.100 (2.54)
0.023 (0.584) SQ TYP (PHOSPHOR BRONZE, SOLDER COATED)
1234 0.250 (6.35) 876 5
Unless otherwise specified, dimensions are nominal and in inches (millimeters).
©2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00
CORPORATE
Bel Fuse Inc. 198 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
FAR EAST
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
EUROPE
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
T1-10
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