TRF

Document 152
Tip and Ring Common Mode Filters
These economical filters are designed to help telecommunications equipment engineers meet FCC and CCITT
requirements. Available in 1 or 2 line (2 or 4 wire) versions,
Coilcraft tip and ring filters provide >15 dB attenuation of common mode noise over the 3 Hz to 300 MHz frequency range.
Part number:
Minimum inductance:
Rated current:
DC resistance:
Dielectric strength1: TRF 2000L (1-line)
TRF 4000L (2-line)
20 µH
500 mA
0.065 Ohms max
1500 Vrms min
1. For TRF 2000, dielectric strength measured from pins 1,8 to 4,5. For
TRF 4000, dielectric strength measured from pins 1,2,7,8 to pins
3,4,5,6.
2. Ambient temperature range –40°C to +85°C.
3. Electrical specifications at 25°C.
TRF 2000L
TRF 4000L
C
Typical Response*
C
0
Attenuation (dB)
B
B
Differential Mode
10
D
20
0.030
dia
0,76
5
8
D
0.030
dia
0,76
7
8
6
5
Common mode
30
A
40
0.1
1
10
100
1000
1
Frequency (MHz)
2
1
4
Recommended
Board Layout
*Measured on HP 8753D network analyzer
TRF 4000L
8
5
8
7
6
5
0.040
1,02
(5×)
8
E
1
4
F
2
3
4
Recommended
Board Layout
5
8
TRF 2000L
A
5
0.040
1,02
(8×)
E
1
4
F
G
Terminations: Tin-silver over tin
1
4
1
2
3
4
A max B max C max
D
E
F
G
0.425 0.550 0.475 0.1150.3000.1000.300 inches
10,8013,9712,072,927,622,547,62mm
US +1-847-639-6400 [email protected]
UK +44-1236-730595 [email protected]
Taiwan +886-2-2264 3646 [email protected]
China +86-21-6218 8074 [email protected]
Singapore + 65-6484 8412 [email protected]
Document 152 Revised 05/27/05
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.