Molding Power Inductors – HEI Series
HEI Series
Power inductor takes an important part in the efficiency performance
of DC/DC converter, and HEI products is designed to take care of
both PFM and PWM application performance. Therefore, for HEI
product, the Q(Rac) value at light load and the RDC value at heavy
load are both superior to other competitors. Furthermore, the
saturated current performance is also great, so it helps to get the
ripple current lower and enhance the efficiency result.
Features
High Efficiency
Small Sizes in 2.0*1.2*0.8mm
High Saturated Current
High Q / Low Rac
Low Rdc
Applications
Smart phones
Bluetooth Headsets
Tablet PCs
PND
PC peripheral devices
DSC, Camcorders
Product Identification
Shape and Dimensions
Recommended Pattern
Dimensions in mm
TYPE
201208A
201210A
201610A
252010A
252012A
322510A
322512A
A
2.0±0.2
2.0±0.2
2.0±0.2
2.5±0.3
2.5±0.3
3.2±0.3
3.2±0.3
B
1.25±0.2
1.25±0.2
1.60±0.2
2.00±0.3
2.00±0.3
2.50±0.3
2.50±0.3
C
0.8Max
1.0Max
1.0Max
1.0Max
1.2Max
1.0Max
1.2Max
D
0.5±0.3
0.5±0.3
0.5±0.3
0.6±0.3
0.6±0.3
0.5±0.3
0.5±0.3
Dimensions in mm
TYPE
201208A
201210A
201610A
252010A
252012A
322510A
322512A
A
0.8~1.2
0.8~1.2
0.9
1.2
1.2
1.7
1.7
B
2.3~2.9
2.3~2.9
2.0
2.8
2.8
3.2
3.2
C
1.0~1.4
1.0~1.4
1.6
2.0
2.0
2.5
2.5
Molding Power Inductors – HEI Series
Electrical Characteristics
Part Number
HEI201208A-R24M-Q8
HEI201208A-R47M-Q8
Inductance
(uH)
0.24
0.47
Tolerance
(±%)
20
20
Test
Frequency
(MHz)
2
2
Irms(A)
Max(Typ)
4.2(4.8)
3.0(3.4)
Isat(A)
Max(Typ)
4.8(5.4)
3.2(3.6)
RDC(mΩ)
Max(Typ)
25(19)
48(40)
Irms
DC current (A) that will cause an approximate
ΔT
of 40℃.
Isat
DC current (A) that will cause L to drop approximately 30%
Tolerance：M = ±20%
L : Agilent E4991/HP4287A+16197A, 2MHz 0.2V
Rdc : CHEN HWA502
Isat : Agilent E4980A+HP42841A
Irms : Agilent 6641 SYSTEM DC POWER SUPPLY
Operating temperature range from -40℃ to 125℃. (Including self - temperature rise)
Test Instruments：E4991A
Impedance / Material Analyzer
Inductance vs. DC Current
0.8
0.7
0.6
50
70
60
R47
R24
Tem perature Change vs. DC Current
0.5
L(uH)
0.4
R47
0.3
0.2
0.1
0.0
0
1
2
3
4
5
6
R24
L(uH)
40
30
20
10
0
0
1
2
3
4
5
6
DC Current(A)
DC Current(A)
Molding Power Inductors – HEI Series
Electrical Characteristics
Part Number
HEI201210A-R24M-Q8
HEI201210A-R47M-Q8
HEI201210A-1R0M-Q8
HEI201210A-2R2M-Q8
Inductance
(uH)
0.24
0.47
1.0
2.2
Tolerance
(±%)
20
20
20
20
Test
Frequency
(MHz)
2
2
2
2
Irms(A)
Max(Typ)
3.7(4.6)
3.0(3.7)
2.2(2.7)
1.5(1.8)
Isat(A)
Max(Typ)
4.5(5.7)
3.3(4.2)
2.3(2.8)
1.6(2.0)
RDC(mΩ)
Max(Typ)
28(22)
42(33)
78(69)
168(153)
Irms
DC current (A) that will cause an approximate
ΔT
of 40℃.
Isat
DC current (A) that will cause L to drop approximately 30%
Tolerance：M = ±20%
L : Agilent E4991/HP4287A+16197A, 2MHz 0.2V
Rdc : CHEN HWA502
Isat : Agilent E4980A+HP42841A
Irms : Agilent 6641 SYSTEM DC POWER SUPPLY
Operating temperature range from -40℃ to 125℃. (Including self - temperature rise)
Test Instruments：E4991A
Impedance / Material Analyzer
Inductance vs. DC Current
2.4
Tem perature Change vs. DC Current
70
2R2
60
1R0
50
R47
R24
2.0
1.6
2R2
L(uH)
ΔT(
℃
)
1R0
R47
R24
40
30
20
10
0
1.2
0.8
0.4
0.0
0
1
2
3
4
5
6
7
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
DC Current(A)
DC Current(A)
Molding Power Inductors – HEI Series
Electrical Characteristics
Part Number
HEI201610A-R24M-Q8
HEI201610A-R47M-Q8
HEI201610A-1R0M-Q8
HEI201610A-2R2M-Q8
Inductance
(uH)
0.24
0.47
1.0
2.2
Tolerance
(±%)
20
20
20
20
Test
Frequency
(MHz)
2
2
2
2
Irms(A)
Max(Typ)
3.9(4.8)
3.5(4.2)
2.5(3.1)
1.8(2.2)
Isat(A)
Max(Typ)
5.6(7.0)
3.9(4.8)
2.9(3.6)
2.4(2.7)
RDC(mΩ)
Max(Typ)
27(21)
42(33)
65(53)
135(112)
Irms
DC current (A) that will cause an approximate
ΔT
of 40℃.
Isat
DC current (A) that will cause L to drop approximately 30%
Tolerance：M = ±20%
L : Agilent E4991/HP4287A+16197A, 2MHz 0.2V
Rdc : CHEN HWA502
Isat : Agilent E4980A+HP42841A
Irms : Agilent 6641 SYSTEM DC POWER SUPPLY
Operating temperature range from -40℃ to 125℃. (Including self - temperature rise)
Test Instruments：E4991A
Impedance / Material Analyzer
Inductance vs. DC Current
2.4
2.0
70
60
50
1.6
2R2
1R0
R47
R24
Tem perature Change vs. DC Current
L(uH)
ΔT(
℃
)
1R0
R47
R24
2R2
40
30
20
10
0
1.2
0.8
0.4
0.0
0
1
2
3
4
5
6
7
8
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
DC Current(A)
DC Current(A)
Molding Power Inductors – HEI Series
Electrical Characteristics
Part Number
HEI252010A-R24M-Q8
HEI252010A-R33M-Q8
HEI252010A-R47M-Q8
HEI252010A-R68M-Q8
HEI252010A-1R0M-Q8
HEI252010A-1R5M-Q8
HEI252010A-2R2M-Q8
Inductance
(uH)
0.24
0.33
0.47
0.68
1.0
1.5
2.2
Tolerance
(±%)
20
20
20
20
20
20
20
Test
Frequency
(MHz)
2
2
2
2
2
2
2
Irms(A)
Max(Typ)
5.5(6.5)
4.8(5.5)
3.9(4.5)
3.7(4.2)
3.0(3.5)
2.4(2.8)
2.2(2.5)
Isat(A)
Max(Typ)
8.0(9.5)
6.5(8.0)
5.0(6.2)
4.5(5.6)
3.7(4.6)
3.1(3.8)
2.5(3.0)
RDC(mΩ)
Max(Typ)
18(13)
24(18)
35(27)
40(32)
53(45)
75(68)
97(87)
Irms
DC current (A) that will cause an approximate
ΔT
of 40℃.
Isat
DC current (A) that will cause L to drop approximately 30%
Tolerance：M = ±20%
L : Agilent E4991/HP4287A+16197A, 2MHz 0.2V
Rdc : CHEN HWA502
Isat : Agilent E4980A+HP42841A
Irms : Agilent 6641 SYSTEM DC POWER SUPPLY
Operating temperature range from -40℃ to 125℃. (Including self - temperature rise)
Test Instruments：E4991A
Impedance / Material Analyzer
Inductance vs. DC Current
2.4
2.2
2.0
1.8
1.6
60
50
40
30
1R0
R68
R47
R33
R24
10
10
0
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
20
2R2
1R5
1R0
80
70
R68
R47
R33
R24
Tem perature Change vs. DC Current
L(uH)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
2R2
1R5
DC Current(A)
ΔT(
℃
)
DC Current(A)
stm32/stm8
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