SW Series Inductors for National's 150kHz Simple Switcher
TM
SW Series low cost toroidal inductors, designed for use with
National Semiconductor's 150kHz Simple Switcher
TM
Part
Numbers LM259X-L1 through LM259X-L44 and LM258X-L
Features
High energy storage with minimum saturation
High stability from no load to full load
Available in both SMD and TH versions
Manufactured in ISO-9001 approved facility
Operating temperature range: -40C to +125C
Test frequency: Inductance measured at @ 20KHz, 10mV
Electrical Specifications at 25C ambient
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Talema IN
Date Code
SWT-xxx-xx
Talema IN
Date Code
SWS-xxx-xx
Talema Electronic 101 West 10th Street Rolla, MO 65401 (573) 364-2422 Fax: (573) 364-5390
www.talema.com Email: sales@talema.com
Dimensions
SW Series Toroidal Inductors for National's 150kHz Simple Switcher
TM
Electrical Specifications at 25C
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Type SWS - Surface Mount
D
A
B
Talema IN
Date Code
SWS-xxx-xx
Suggested Pad
Layout
Pad Width
S1 - S5
0.059
(1.50)
E
D
S6
0.079
(2.00)
D
C
Surface Coplanarity will be <0.005(0.13)
Talema Electronic 101 West 10th Street Rolla, MO 65401 (573) 364-2422 Fax: (573) 364-5390
www.talema.com Email: sales@talema.com
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Schematic
1
2
Type SWC - Clip Mount
Type SWT -Through Hole Mount
Sizes T1 -T4
Size T5
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Suggested Pad
Layout
(Top side View)
Suggested Pad
Layout
E
B
D
1
2
A
Talema IN
Date Code
SWT-xxx-xx
1/2
c
C
X
0.138
(3.50)
E
D
0.071
(1.80)
0.047
(1.20)
E
0.138
3.50
D
C
Schematic
1
2
Schematic
1
2
E
D
0.059
(1.50)
0.035
(0.90)
1
2
A
B
D
E
Talema IN
Date Code
SWT-xxx-xx
Pulse Part Number
National
Specified
Idc
Talema Part Number
THT
SMD
Part Number
L(H)
(Amps)
SMD
TH - Flat
TH - Vertical
PE-53801
PE-53801S
LM259X-L1
259
0.13
SWS-0.13-259
SWT-0.13-259
PE-53802
PE-53802S
LM259X-L2
178
0.16
SWS-0.16-178
SWT-0.16-178
PE-53803
PE-53803S
LM259X-L3
118
0.20
SWS-0.20-118
SWT-0.20-118
PE-53804
PE-53804S
LM259X-L4
79
0.25
SWS-0.25-79
SWT-0.25-79
PE-53805
PE-53805S
LM259X-L5
55
0.30
SWS-0.30-55
SWT-0.30-55
PE-53806
PE-53806S
LM259X-L6
39
0.34
SWS-0.34-39
SWT-0.34-39
PE-53807
PE-53807S
LM259X-L7
26
0.45
SWS-0.45-26
SWT-0.45-26
PE-53808
PE-53808S
LM259X-L8
374
0.20
SWS-0.20-374
SWT-0.20-374
PE-53809
PE-53809S
LM259X-L9
256
0.25
SWS-0.25-256
SWT-0.25-256
PE-53810
PE-53810S
LM259X-L10
176
0.30
SWS-0.30-176
SWT-0.30-176
PE-53811
PE-53811S
LM259X-L11
118
0.38
SWS-0.38-118
SWT-0.38-118
PE-53812
PE-53812S
LM259X-L12
78
0.46
SWS-0.46-78
SWT-0.46-78
PE-53813
PE-53813S
LM259X-L13
55
0.56
SWS-0.56-55
SWT-0.56-55
PE-53814
PE-53814S
LM259X-L14
39
0.68
SWS-0.68-39
SWT-0.68-39
PE-53815
PE-53815S
LM259X-L15
26
0.84
SWS-0.84-26
SWT-0.84-26
PE-53816
PE-53816S
LM259X-L16
17
1.02
SWS-1.02-17
SWT-1.02-17
PE-53817
PE-53817S
LM259X-L17
375
0.36
SWS-0.36-375
SWT-0.36-375
PE-53818
PE-53818S
LM259X-L18
252
0.44
SWS-0.44-252
SWT-0.44-252
PE-53819
PE-53819S
LM259X-L19
173
0.54
SWS-0.54-173
SWT-0.54-173
PE-53820
PE-53820S
LM259X-L20
115
0.67
SWS-0.67-115
SWT-0.67-115
PE-53821
PE-53821S
LM259X-L21
78
0.82
SWS-0.82-78
SWT-0.82-78
PE-53822
PE-53822S
LM259X-L22
54
1.00
SWS-1.00-54
SWT-1.00-54
PE-53823
PE-53823S
LM259X-L23
38
1.20
SWS-1.20-38
SWT-1.20-38
PE-53824
PE-53824S
LM259X-L24
26
1.48
SWS-1.48-26
SWT-1.48-26
PE-53825
PE-53825S
LM259X-L25
18
1.81
SWS-1.81-18
SWT-1.81-18
PE-53826
PE-53826S
LM259X-L26
377
0.68
SWS-0.68-277
SWT-0.68-277
PE-53827
PE-53827S
LM259X-L27
248
0.83
SWS-0.83-248
SWT-0.83-248
PE-53828
PE-53828S
LM259X-L28
168
1.02
SWS-1.02-168
SWT-1.02-168
PE-53829
PE-53829S
LM259X-L29
112
1.26
SWS-1.26-112
SWT-1.26-112
PE-53830
PE-53830S
LM259X-L30
77
1.54
SWS-1.54-77
SWT-1.54-77
PE-53831
PE-53831S
LM259X-L31
53
1.87
SWS-1.87-53
SWT-1.87-53
PE-53932
PE-53932S
LM259X-L32
37
2.24
SWS-2.24-37
SWT-2.24-37
PE-53933
PE-53933S
LM259X-L33
24
2.74
SWS-2.74-24
SWT-2.74-24
PE-53934
PE-53934S
LM259X-L34
17
3.00
SWS-3.00-17
SWT-3.00-17
SWC-3.00-17
PE-53935
PE-53935S
LM259X-L35
250
1.50
SWS-1.50-250
SWC-1.50-250
PE-54036
PE-54036S
LM259X-L36
168
1.81
SWS-1.81-168
SWC-1.81-168
PE-54037
PE-54037S
LM259X-L37
114
2.22
SWS-2.22-114
SWC-2.22-114
PE-54038
PE-54038S
LM259X-L38
77
2.70
SWS-2.70-77
SWC-2.70-77
PE-54039
PE-54039S
LM259X-L39
53
3.00
SWS-3.00-53
SWC-3.00-53
PE-54040
PE-54040S
LM259X-L40
38
3.00
SWS-3.00-38
SWC-3.00-38
PE-54041
PE-54041S
LM259X-L41
25
3.00
SWS-3.00-25
SWT-3.00-25
SWC-3.00-25
PE-54042
--
LM259X-L42
167
2.50
SWS-2.50-167
SWC-2.50-167
PE-54043
--
LM259X-L43
110
3.00
SWS-3.00-110
SWC-3.00-110
PE-54044
PE-54044S
LM259X-L44
77
3.00
SWS-3.00-77
SWC-3.00-77
PE-53900
--
LM258X-L
19
4.50
SWS-4.50-19
SWC-4.50-19
SW Series Cross Reference for National's 150kHz Simple Switcher
TM
Pulse Engineering - Talema Electronic
Talema Electronic 101 West 10th Street Rolla, MO 65401 (573) 364-2422 Fax: (573) 364-5390
www.talema.com Email: sales@talema.com
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