Approval Sheet
Electrical Characteristics
WLFM_C Series
RDC
DC Resistance (Ω)
Max.
Test
Freq
(MHz)
Rated
Current
(mA)
SRF
L(uH)
Inductance
Walsin Part Number
Tolerance
(MHz)
WLFM201209M1R0PC
WLFM201209M2R2PC
WLFM201209M3R3PC
WLFM201209M4R7PC
1.00
2.20
3.30
4.70
±20%
±20%
±20%
±20%
1
1
1
1
0.10
0.17
0.20
0.23
1100
900
800
800
90
70
50
40
RDC
DC Resistance (Ω)
Max.
Test
Freq
(MHz)
Rated
Current
(mA)
SRF
L(uH)
Inductance
Walsin Part Number
Tolerance
(MHz)
WLFM201609M2R2PC
WLFM201609M4R7PC
2.20
4.70
±20%
±20%
1
0.12
1100
40
20
1
0.16
900
RDC
DC Resistance (Ω)
Max.
Test
Freq
(MHz)
Rated
Current
(mA)
SRF
L(uH)
Inductance
Walsin Part Number
Tolerance
(MHz)
WLFM252009MR47PC
WLFM252009M1R0PC
WLFM252009M1R5PC
WLFM252009M2R2PC
WLFM252009M3R3PC
WLFM252009M4R7PC
WLFM252009M6R8PC
0.47
1.00
1.50
2.20
3.30
4.70
6.80
±20%
±20%
±20%
±20%
±20%
±20%
±20%
1
1
1
1
1
1
1
0.04
0.055
0.07
0.08
0.10
0.11
0.20
1800
1600
1500
1300
1200
1100
1100
100
60
50
40
30
25
25
*1:For special part number which is not shown in the above table, please refer to appendix.
*2:Apply DC 0.4 ~ 0.6A to chip for 1 ~ 3 sec. before to measure inductance.
Test Instrument:
•HP4291B-RF Impedance / Material Analyzer
•HP4338A/B Milliohm meter
•Test Frequency : 1MHz / OSC Level : 100mV
Page 3 of 7
ASC_WLFM_C Series
Jul.2020