Nordtek

 

SW -For 150KHz Simple Switcher

Return to normal view
SW Series low cost toroidal inductors, designed for use with National Semiconductor's 150kHz Simple SwitcherTM Part Numbers LM259X-L1 through LM259X-L44 and LM258X-L   SW - For 150HKz Simple Switcher
   

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: -40°C to +125°C
 

Mechanical Layout
Cross Reference, Pulse Engineering - Talema Electronic

Electrical Specifications at 25°C

Part Number National Part
Number
Rated Current
(IDC)
LN (µH) ±20% ETOP (V-µSec) Max. DCR
(Ohm)
Energy Storage
(µJ)
Package
"S" "C" & "T"
 SW_-0.13-259
 SW_-0.16-178
 LM-259X-L1
 LM-259X-L2 
0.13
0.16
259
187
23.1
16.5
3.40
2.80
2
2
 S1 T1
 SW_-0.20-118
 SW_-0.25-79
 SW_-0.30-55
 LM-259X-L3
 LM-259X-L4
 LM-259X-L5
0.20
0.25
0.30
118
79
55
13.2
9.9
6.6
1.80
1.50
1.00
2
2
2
 SW_-0.34-39
 SW_-0.45-26
 LM-259X-L6
 LM-259X-L7
0.34
0.45
39
26
6.6
6.6
0.80
0.62
2
3
 SW_-0.20-374
 SW_-0.25-256
 SW_-0.30-176
 LM-259X-L8
 LM-259X-L9
 LM-259X-L 10
0.20
0.25
0.30
374
256
176
75.9
33.0
26.4
2.70
2.20
1.40
7
8
8
 S2 T2
 SW_-0.38-118
 SW_-0.46-78
 SW_-0.56-55
 LM-259X-L 11
 LM-259X-L 12
 LM-259X-L 13
0.38
0.46
0.56
118
78
55
19.8
16.5
13.2
1.20
0.80
0.50
9
8
9
 SW_-0.68-39
 SW_-0.84-26
 SW_-1.02-17
 LM-259X-L 14
 LM-259X-L 15
 LM-259X-L 16
0.68
0.84
1.02
39
26
17
9.9
6.6
6.6
0.30
0.20
0.10
9
9
9
 SW_-0.36-375
 SW_-0.44-252
 SW_-0.54-173
 LM-259X-L 17
 LM-259X-L 18
 LM-259X-L 19
0.36
0.44
0.54
375
252
173
75.9
49.5
36.3
1.30
0.90
0.60
24
24
25
 S3 T3
 SW_-0.67-115
 SW_-0.82-78
 SW_-1.0-54
 LM-259X-L20
 LM-259X-L21
 LM-259X-L22
0.67
0.82
1.00
115
78
54 
29.7
23.1
16.5
0.40
0.30
0.20
26
26
27
 SW_-1.2-38
 SW_-1.48-26
 SW_-1.81-18
 LM-259X-L23
 LM-259X-L24
 LM-259X-L25
1.20
1.48
1.81
38
26
18 
13.2
9.9
9.9
0.10
0.10
0.06
27
28
29
 SW_-0.68-377
 SW_-0.83-248
 SW_-1.02-168
 LM-259X-L26
 LM-259X-L27
 LM-259X-L28
0.68
0.83
1.02
377
248
168
75.9
72.6
56.1
1.00
0.60
0.40
87
85
87
 S4 T4
 SW_-1.26-112
 SW_-1.54-77
 SW_-1.87-53
 LM-259X-L29
 LM-259X-L30
 LM-259X-L31
1.26
1.54
1.87
112
77
53
42.9
33.0
26.4
0.30
0.20
0.13
89
91
93
 SW_-2.24-37  LM-259X-L32 2.24 37 19.8 0.10 93
 SW_-2.74-24  LM-259X-L33 2.74 24 16.5 0.07 90
 SW_-3.00-17  LM-259-L34 3.00 17 13.2 0.05 77  S4 C1 - T4
 SW_-1.5-250
 SW_-1.81-168
 LM-259X-L35
 LM-259X-L36
1.50
1.81
250
168
72.6
75.9
0.23
0.18
281
275
 S6 C3
 SW_-2.22-114
 SW_-2.70-77
 SW_-3.00-53
 LM-259X-L37
 LM-259X-L38
 LM-259X-L39
2.22
2.70
3.00
114
77
53
62.7
52.8
42.9
0.10
0.09
0.08
281
281
239
 SW_-3.00-38  LM-259X-L40 3.00 38 29.7 0.05 171
 SW_-3.00-25  LM-259X-L41 3.00 25 19.8 0.04 113  S5 T5 - C2
 SW_-2.50-167
 SW_-3.00-110
 LM-259X-L42
 LM-259X-L43
2.50
3.00
167
110
75.9
75.9
0.14
0.09
522
495
 S6 C4
 SW_-3.00-77
 SW_-4.50-19
 LM-259X-L44
 LM-258X-L
3.00
4.50
77
19
59.4
32.0*
0.08
0.02
347
192
C3

*Note: ETOP for PIN SW_-4.50-19 is based on a frequency of 100kHz. All other items are rated at 150kHz.
Simple SwitcherTM is a trademark of National Semiconductor Corporation.





Mechanical Layout


Mechanical Layout - Type SWS - Surface Mount   Mechanical Layout - Type SWS - Through Hole Mount

Mounting Style Size Code Dimensions - Inches ±0.010 (mm ±0.25))
A B C D E
"S"
SMD
S1 0.339
(8.60)
0.339
(8.60)
0.185
(4.70)
0.268
(6.80)
0.378
(9.60)
S2 0.394
(10.0)
0.394
(10.0)
0.256
(6.50)
0.339
(8.60)
0.402
(10.2)
S3 0.503
(12.8)
0.503
(12.8)
0.276
(7.00)
0.449
(11.4)
0.512
(13.0)
S4 0.591
(15.0)
0.591
(15.0)
0.315
(8.00)
0.508
(12.9)
0.551
(14.0)
S5 0.669
(17.0)
0.701
(17.8)
0.390
(9.91)
0.591
(15.0)
0.591
(15.0)
S6 0.925
(23.5)
0.925
(23.5)
0.496
(12.6)
0.827
(21.0)
0.689
(17.5)
"T"
TH
T1 0.339
(8.60)
0.339
(8.60)
0.216
(5.50)
0.250
(6.35)
0.250
(6.35)
T2 0.394
(10.0)
0.394
(10.0)
0.287
(7.30)
0.300
(7.62)
0.300
(7.62)
T3 0.503
(12.8)
0.503
(12.8)
0.307
(7.80)
0.375
(9.52)
0.375
(9.52)
T4 0.591
(15.0)
0.591
(15.0)
0.346
(8.80)
0.500
(12.70)
0.299
(7.62)
T5 0.669
(17.0)
0.701
(17.8)
0.422
(10.71)
0.600
(15.24)
0.400
(10.16)

Type SWC - Clip Mount


Mounting Style Size Code Dimensions - Inches ±0.01 (mm ±0.25)
C D E X = Coil O.D. +
"C"
Vertical
Clip
Mount
C1 0.580
(14.73)
0.340
(8.64)
0.220
(5.58)
0.110
(2.80)
C2 0.650
(16.5)
0.449
(11.4)
0.299
(7.60)
0.110
(2.80)
C3 0.827
(21.0)
0.449
(11.4)
0.299
(7.60)
0.110
(2.80)
C4 0.949
(24.1)
0.598
(15.2)
0.449
(11.4)
0.110
(2.80)
C5 1.252
(31.8)
0.701
(17.8)
0.500
(12.7)
0.130
(3.30)



SW Series Cross Reference for National's 150kHz Simple SwitcherTM


Pulse Engineering - Talema Electronic
Pulse Part Number National Part Number Specified L(µH) Idc (Amps) Talema Part Number
THT SMD SMD TH-Flat TH-Vertical
 PE-53801
 PE-53802
 PE-53801S
 PE-53802S
 LM259X-L1
 LM259X-L2
259
178
0,13
0,16
 SWS-0.13-259
 SWS-0.16-178
 SWT-0.13-259
 SWT-0.16-178
 
 PE-53803
 PE-53804
 PE-53805
 PE-53803S
 PE-53804S
 PE-53805S
 LM259X-L3
 LM259X-L4
 LM259X-L5
118
79
55
0,20
0,25
0,30
 SWS-0.20-118
 SWS-0.25-79
 SWS-0.30-55
 SWT-0.20-118
 SWT-0.25-79
 SWT-0.30-55
 
 PE-53806
 PE-53807
 PE-53806S
 PE-53807S
 LM259X-L6
 LM259X-L7
39
26
0,34
0,45
 SWS-0.34-39
 SWS-0.45-26
 SWT-0.34-39
 SWT-0.45-26
 
 PE-53808
 PE-53809
 PE-53810
 PE-53808S
 PE-53809S
 PE-53810S
 LM259X-L8
 LM259X-L9
 LM259X-L10
374
256
0,20  SWS-0.20-374
 SWS-0.25-256
 SWS-0.30-176
 SWT-0.20-374
 SWT-0.25-256
 SWT-0.30-176
 
 PE-53811
 PE-53812
 PE-53813
 PE-53811S
 PE-53812S
 PE-53813S
 LM259X-L11
 LM259X-L12
 LM259X-L13
118
78
55
0,38
0,46
0,56
 SWS-0.38-118
 SWS-0.46-78
 SWS-0.56-55
 SWT-0.38-118
 SWT-0.46-78
 SWT-0.56-55
 
 PE-53814
 PE-53815
 PE-53816
 PE-53814S
 PE-53815S
 PE-53816S
 LM259X-L14
 LM259X-L15
 LM259X-L16
39
26
17
0,68
0,84
1,02
 SWS-0.68-39
 SWS-0.84-26
 SWS-1.02-17
 SWT-0.68-39
 SWT-0.84-26
 SWT-1.02-17
 
 PE-53817
 PE-53818
 PE-53819
 PE-53817S
 PE-53818S
 PE-53819S
 LM259X-L17
 LM259X-L18
 LM259X-L19
375
252
173
0,36
0,44
0,54
 SWS-0.36-375
 SWS-0.44-252
 SWS-0.54-173
 SWT-0.36-375
 SWT-0.44-252
 SWT-0.54-173
 
 PE-53820
 PE-53821
 PE-53822
 PE-53820S
 PE-53821S
 PE-5322S
 LM259X-L20
 LM259X-L21
 LM259X-L22
115
78
54
0,67
0,82
1,00
 SWS-0.67-115
 SWS-0.82-78
 SWS-1.00-54
 SWT-0.67-115
 SWT-0.82-78
 SWT-1.00-54
 
 PE-53823
 PE-53824
 PE-53825
 PE-53823S
 PE-53824S
 PE-53825S
 LM259X-L23
 LM259X-L24
 LM259X-L25
38
26
18
1,20
1,48
1,81
 SWS-1.20-38
 SWS-1.48-26
 SWS-1.81-18
 SWT-1.20-38
 SWT-1.48-26
 SWT-1.81-18
 
 PE-53826
 PE-53827
 PE-53828
 PE-53826S
 PE-53827S
 PE-53828S
 LM259X-L26
 LM259X-L27
 LM259X-L28
377
248
168
0,68
0,83
1,02
 SWS-0.68-377
 SWS-0.83-248
 SWS-1.02-168
 SWT-0.68-377
 SWT-0.83-248
 SWT-1.02-168
 
 PE-53829
 PE-53830
 PE-53831
 PE-53829S
 PE-53830S
 PE-53831S
 LM259X-L29
 LM259X-L30
 LM259X-L31
112
77
53
1,26
1,54
1,87
 SWS-1.26-112
 SWS-1.54-77
 SWS-1.87-53
 SWT-1.26-112
 SWT-1.54-77
 SWT-1.87-53
 
 PE-53932
 PE-53933
 PE-53934
 PE-53932S
 PE-53933S
 PE-53934S
 LM259X-L32
 LM259X-L33
 LM259X-L34
37
24
17
2,24
2,74
3,00
 SWS-2.24-37
 SWS-2.74-24
 SWS-3.00-17
 SWT-2.24-37
 SWT-2.74-24
 SWT-3.00-17


 SWC-3.00-17
 PE-53935
 PE-54036
 PE-53935S
 PE-54036S
 LM259X-L35
 LM259X-L36
250
168
1,50
1,81
 SWS-1.50-250
 SWS-1.81-168
   SWC-1.50-250
 SWC-1.81-168
 PE-54037
 PE-54038
 PE-54039
 PE-54037S
 PE-54038S
 PE-54039S
 LM259X-L37
 LM259X-L38
 LM259X-L39
114
77
53
2,22
2,70
3,00
 SWS-2.22-114
 SWS-2.70-77
 SWS-3.00-53
   SWC-2.22-114
 SWC-2.70-77
 SWC-3.00-53
 PE-54040
 PE-54041
 PE-54040S
 PE-54041S
 LM259X-L40
 LM259X-L41
38
25
3,00
3,00
 SWS-3.00-38
 SWS-3.00-25

 SWT-3.00-25
 SWC-3.00-38
 SWC-3.00-25
 PE-54042
 PE-54043
-
-
 LM259X-L42
 LM259X-L43
167
110
2,50
3,00
 SWS-2.50-167
 SWS-3.00-110
   SWC-2.50-167
 SWC-3.00-110
 PE-54044
 PE-53900
 PE-54044S
    -
 LM259X-L44
 LM258X-L
77
19
3,00
4,50
 SWS-3.00-77
 SWS-4.50-19
   SWC-3.00-77
 SWC-4.50-19