SH-101 Datasheet, PDF (23/45 Pages) NEC – DC Line Fileters

DIP Type
Noise Filters for Telephone Sets
ST-101F2, 101F4
[RoHS Compliant]
Common Mode for Telephone Sets
Model
Frequency range
(MHz)
Impedance
(k⏲) min.
ST-101F2
ST-101F4
0.5 to 7
0.5 to 7
40 (at 600 kHz)
60 (at 600 kHz)
Rated voltage
DC (V)
50
50
Rated current
(mA)
200
200
DC resistance
(⏲/Line) max.
2.7
3.5
Operating
temperature range
(˚C)
–20 to +75
–20 to +75
• Withstanding voltage: 500VDC (one minute, between lines) • Insulation resistance: more than 10M⏲ (250VDC between lines)
Remarks
AM band
AM band
Shape and Dimensions/Circuit Diagram
14 max.
13 max.
Bottom view
ᕅ
ᕆ
Bottom view
ᕅ
ᕆ
Circuit diagram
ᕃ
ᕄ
*11.5 max. with ST-101F4
ø0.6
ᕃ ^5.0±0.5 _ᕄ
ᕃ 5.0±0.5 ᕄ
ᕆ
ᕅ
[mm]
Installation Examples
Telephone set
Rosette
Installation position
Terminal
(facsimile, card reader, etc.)
Telephone line
Installed filter
ST-201 ST-101
ST-201A ST-101A
ST-202 ST-101F2
ST-202A ST-101F4
ST-202S ST-110AH
SZ-03 ST-110AV
ST-110BH
ST-110BV
ST-104A4
ST-204A1
ST-204A3
ST-204A4
Line terminal unit
Installed filter LFT
HFT
Design Examples
ᕃInstallation at rosette or circuit input/output
ST, LFT, HFT
ᕄInsertion in Driver/ Receive
circuit in telephone
Telephone
L1
Circuit
Drv.
Telephone
L2
Rec.
Impedance vs. Frequency
1000
100
10
101F4
101F2
1
0.1
0.01
0.1
1
10
500
Frequency (MHz)
DC Line Filters VOL.10
23
˔"MM
TQFDJGJDBUJPOT
JO
UIJT
DBUBMPH
BOE
QSPEVDUJPO
TUBUVT
PG
QSPEVDUT
BSF
TVCKFDU
UP
DIBOHF
XJUIPVU
OPUJDF
1SJPS
UP
UIF
QVSDIBTF
QMFBTF
DPOUBDU
/&$
50,*/
GPS
VQEBUFE
QSPEVDU
EBUB
˔1MFBTF
SFRVFTU
GPS
B
TQFDJGJDBUJPO
TIFFU
GPS
EFUBJMFE
QSPEVDU
EBUB
QSJPS
UP
UIF
QVSDIBTF
˔#FGPSF
VTJOH
UIF
QSPEVDU
JO
UIJT
DBUBMPH
QMFBTF
SFBE
1SFDBVUJPOT
BOE
PUIFS
TBGFUZ
QSFDBVUJPOT
MJTUFE
JO
UIF
QSJOUFE
WFSTJPO
DBUBMPH
%$-70-&&