Ultra Miniature Transformers

W Series Plug-In

Specifications
  • MIL-PRF-27: All units manufactured to MIL-PRF-27, Grade 5, Class S.
  • FREQUENCY RESPONSE: ±3db, 400 Hz - 100 KHz at 1.0 Milliwatt.
  • MAXIMUM DISTORTION: 5% With Rated Power Level at 1 KHz and 400 Hz.
  • DIELECTRIC STRENGTH: All Units Tested at 200 V RMS.
  • INSULATION RESISTANCE: Greater Than 10,000 Megohms at 300 V DC.
  • WEIGHT: 2.5 Grams.
  • OPERATING TEMPERATURE: -55º C to +130º C
  • TERMINALS: Solid .016 Diameter Conductor. Solderability per MIL-STD-202 Method 208.
  • THERMAL SHOCK: 25 Cycles, Method 107, MIL-STD-202, Test Condition 55º C. to +130º C


Larger size drawing of W Series


Ultra Miniature Transformers:
W Series

Pico
Part
Number
W Series
Prim.
Imped.
Ohms
Sec.
Imped.
Ohms
Split
Windings
Power
Watts
Prim.
Unbal.
DC
Curr.
ma
Prim.
DC
Resist.
Ohms
Sec.
DC
Resist.
Ohms
Turns Ratio
Prim/Sec.
Prices
1-9 ***

(US $)
SER
PAR
1 KHz
and
higher
400 Hz
and
higher
Ser
Conn
Par
Conn
Sec
Ser
Conn
Sec
Par
Conn
W-26003
W-26005
W-26010
W-26015
W-26020
10ct
20ct
20ct
32ct
40ct
10ct
8ct
20ct
32ct
40ct
2.5
2
5
8
10
.4
.4
.4
.4
.4
.075
.075
.075
.075
.075
31.6
22.3
22.3
17.6
15.8
1.1
2.2
2.2
3.5
4
1.3
1
2.6
4.2
4.5
.33
.25
.65
1.05
1.2
1:1
1.58:1
1:1
1:1
1:1
2:1
3.16:1
2:1
2:1
2:1
49.36
49.36
49.36
49.36
49.36
W-26025
W-26030
W-26035
W-26040
W-26045
48ct
50ct
80ct
100ct
100ct
16ct
50ct
32ct
40ct
100ct
4
12.5
8
10
25
.4
.4
.4
.4
.4
.075
.075
.075
.075
.075
14.4
14.1
11.1
10
10
5.3
5.6
8
10
10
1.9
6.5
4
4.5
12
.48
1.6
1
1.2
3
1.73:1
1:1
1.58:1
1.58:1
1:1
3.46:1
2:1
3.16:1
3.16:1
2:1
52.32
52.32
62.19
52.32
52.32

Ultra Miniature Transformers:
W Series

Pico
Part
Number
W Series

Prim.
Imped.
Ohms
Sec.
Imped.
Ohms
Split
Windings
Power
Watts
Prim.
Unbal.
DC
Curr.
ma
Prim.
DC
Resist.
Ohms
Sec.
DC
Resist.
Ohms
Turns Ratio
Prim/Sec.
Prices
1-9 ***

(US $)
SER
PAR
1 KHz
and
higher
400 Hz
and
higher
Ser
Conn
Par
Conn
Sec
Ser
Conn
Sec
Par
Conn
W-26050
W-26055
W-26060
W-26065
W-26070
120ct
120ct
120ct
150ct
150ct
12.8ct
60ct
120ct
12ct
50ct
3.2
15
30
3
12.5
.4
.4
.4
.4
.4
.075
.075
.075
.075
.075
9.1
9.1
9.1
8.2
8.2
12
12
12
15
15
1.5
7.2
14.5
1.5
6
.38
1.8
3.6
.38
1.5
3.06:1
1.41:1
1:1
3.54:1
1.73:1
6.12:1
2.83:1
2:1
7.08:1
3.46:1
47.07
62.19
62.19
47.07
52.32
W-26075
W-26080
W-26085
W-26090
W-26095
150ct
150ct
150ct
200ct
300ct
100ct
150ct
600ct
200ct
12ct
25
37.5
150
50
3
.4
.4
.4
.4
.4
.075
.075
.075
.075
.075
8.2
8.2
8.2
7
5.8
15
15
15
20
30
12
16.8
70
24
1.5
3
4.2
17.5
6
.38
1.22:1
1:1
1:2
1:1
5:1
2.45:1
2:1
1:1
2:1
10:1
52.32
62.19
52.32
52.32
47.07
W-26100
W-26105
W-26110
W-26115
W-26120
300ct
300ct
300ct
300ct
320ct
50ct
150ct
300ct
600ct
12.8ct
12.5
37.5
75
150
3.2
.4
.4
.4
.4
.4
.075
.075
.075
.075
.075
5.8
5.8
5.8
5.8
5.6
30
30
30
30
32
6
18
36
72
1.5
1.5
4.5
9
18
.38
2.45:1
1.41:1
1:1
1:1.41
5:1
4.9:1
2.83:1
2:1
1.41:1
10:1
52.32
52.32
62.19
47.07
47.07
W-26125
W-26130
W-26135
W-26140
W-26145
400ct
400ct
400ct
400ct
400ct
40ct
120ct
200ct
400ct
1000ct
10
30
50
100
250
.4
.4
.4
.4
.4
.075
.075
.075
.075
.075
5
5
5
5
5
40
40
40
40
40
4.5
14
24
48
120
1.1
3.5
6
12
30
3.16:1
1.83:1
1.41:1
1:1
1:1.58
6.32:1
3.65:1
2.83:1
2:1
1.26:1
62.19
62.19
52.32
62.19
71.30
W-26150
W-26155
W-26160
W-26165
W-26170
400ct
400ct
500ct
500ct
500ct
2000ct
4000ct
12.8ct
16ct
50ct
500
1000
3.2
4
12.5
.4
.4
.4
.4
.4
.075
.075
.075
.075
.075
5
5
4.5
4.5
4.5
40
40
50
50
50
240
480
1.5
2
6
60
120
.38
.5
1.5
1:2.24
1:3.16
6.25:1
5.6:1
3.16:1
1:1.12
1:1.58
12.5:1
11.2:1
6.32:1
71.30
64.44
54.59
54.59
54.59
W-26175
W-26180
W-26185
W-26190
W-26195
500ct
500ct
*500ct
500ct
600ct
150ct
500ct
500ct
600ct
12.8ct
37.5
125
-
150
3.2
.4
.4
.4
.4
.4
.075
.075
.075
.075
.075
4.5
4.5
4.5
4.5
4.1
50
50
50
50
60
18
60
60
72
1.5
4.5
15
-
18
.38
1.83:1
1:1
1:1
1:1.1
6.85:1
3.65:1
2:1
-
1.83:1
13.7:1
54.59
54.59
54.59
54.59
47.07
W-26200
W-26205
W-26210
W-26215
W-26220
600ct
600ct
600ct
600ct
*600ct
30ct
48ct
200ct
600ct
600ct
7.5
12
50
150
-
.4
.4
.4
.4
.4
.075
.075
.075
.075
.075
4.1
4.1
4.1
4.1
4.1
60
60
60
60
60
3.6
5.8
24
72
72
.9
1.45
6
18
-
4.47:1
3.54:1
1.73:1
1:1
1:1
8.94:1
7.07:1
3.46:1
2:1
-
49.36
49.36
49.36
49.36
54.59
W-26225
W-26230
W-26235
W-26240
W-26245
600ct
640ct
700ct
800ct
800ct
1200ct
12.8ct
100ct
12.8ct
48ct
300
3.2
25
3.2
12
.4
.4
.4
.4
.4
.075
.075
.075
.075
.075
4.1
3.9
3.8
3.5
3.5
60
64
70
80
80
144
1.5
12
1.5
5.8
36
.38
3
.38
1.45
1:1.41
7.07:1
2.65:1
7.9:1
4.08:1
1.41:1
14.14:1
5.29:1
15.8:1
8.16:1
49.36
49.36
49.36
49.36
54.59
W-26250
W-26255
W-26260
W-26265
W-26270
800ct
900ct
1000ct
1000ct
1000ct
800ct
600ct
12ct
50ct
1000ct
200
150
3
12.5
250
.4
.4
.4
.4
.4
.075
.075
.075
.075
.075
3.5
3.3
3.2
3.2
3.2
80
90
100
100
100
96
72
1.5
6
120
24
18
.38
1.5
30
1:1
1.22:1
9.13:1
4.47:1
1:1
2:1
2.45:1
18.3:1
8.94:1
2:1
49.36
49.36
49.36
54.59
54.59

Ultra Miniature Transformers:
W Series

Pico
Part
Number
W Series

Prim.
Imped.
Ohms
Sec.
Imped.
Ohms
Split
Windings
Power
Watts
Prim.
Unbal.
DC
Curr.
ma
Prim.
DC
Resist.
Ohms
Sec.
DC
Resist.
Ohms
Turns Ratio
Prim/Sec.
Prices
1-9 ***

(US $)
SER
PAR
1 KHz
and
higher
400 Hz
and
higher
Ser
Conn
Par
Conn
Sec
Ser
Conn
Sec
Par
Conn
W-26275
W-26280
W-26285
W-26290
W-26295
1060ct
1200ct
1200ct
1200ct
*1200ct
12.8ct
12.8ct
500ct
1200ct
1200ct
3.2
3.2
125
300
-
.4
.4
.4
.4
.4
.075
.075
.075
.075
.075
3.1
2.9
2.9
2.9
2.9
106
120
120
120
120
1.5
1.5
60
140
140
.38
.38
15
35
-
9.1:1
9.68:1
1.55:1
1:1
1:1
18.2:1
19.4:1
3.1:1
2:1
-
49.36
44.44
44.44
44.44
60.82
W-26300
W-26305
W-26310
W-26315
W-26320
1500ct
1500ct
*1500ct
*1500ct
1600ct
12ct
500ct
600ct
1500ct
12.8ct
3
125
-
-
3.2
.4
.4
.4
.4
.4
.075
.075
.075
.075
.075
2.6
2.6
2.6
2.6
2.5
150
150
150
150
160
1.5
60
72
180
1.5
.38
15
-
-
.38
11.2:1
1.73:1
1.58:1
1:1
11.2:1
22.4:1
3.46:1
-
-
22.4:1
49.36
54.60
54.60
54.60
49.36
W-26325
W-26330
W-26335
W-26340
W-26345
2000ct
2000ct
*2000ct
2000ct
2500ct
8ct
2000ct
2000ct
8000ct
2500ct
2
500
-
2000
625
.4
.4
.4
.4
.4
.075
.075
.075
.075
.075
2.2
2.2
2.2
2.2
2
200
200
200
200
250
1
240
240
960
300
.25
60
-
240
75
15.8:1
1:1
1:1
1:2
1:1
31.6:1
2:1
-
1:1
2:1
64.44
64.44
71.30
64.44
64.44
W-26350
W-26355
W-26360
W-26365
W-26370
3000ct
*3000ct
3600ct
4000ct
4000ct
3000ct
3000ct
3600ct
16ct
600ct
725
-
900
4
150
.4
.4
.4
.4
.4
.075
.075
.075
.075
.075
1.8
1.8
1.7
1.6
1.6
300
300
360
400
400
360
360
432
1.9
72
90
-
108
.47
18
1:1
1:1
1:1
15.8:1
2.58:1
2:1
-
2:1
31.6:1
5.16:1
52.44
71.30
52.44
64.44
64.44
W-26375
W-26380
W-26385
W-26390
W-26395
4000ct
*4000ct
5000ct
5000ct
7500ct
1000ct
8000ct
500ct
5000ct
50ct
250
-
125
1250
12.5
.4
.4
.4
.4
.33
.075
.075
.075
.075
.075
1.6
1.6
1.4
1.4
1.2
400
400
500
500
750
120
960
60
600
6
30
-
15
150
1.5
2:1
1:1.41
3.16:1
1:1
12.2:1
4:1
-
6.32:1
2:1
24.5:1
71.30
71.30
54.60
54.60
54.60
W-26400
W-26405
W-26410
W-26415
W-26420
7500ct
7500ct
7500ct
*7500ct
8000ct
100ct
600ct
2500ct
7500ct
12.8ct
25
150
625
-
3.2
.33
.33
.33
.33
.3
.075
.075
.075
.075
.075
1.2
1.2
1.2
1.2
1.1
750
750
750
750
800
12
72
300
900
1.5
3
18
75
-
.38
8.66:1
3.54:1
1.73:1
1:1
25:1
17.3:1
7.07:1
3.46:1
-
50:1
54.60
60.80
60.80
71.30
54.60
W-26425
W-26430
W-26435
W-26440
W-26445
8000ct
*8000ct
*9000ct
10,000ct
10,000ct
1000ct
1200ct
9000ct
12.8ct
16ct
250
-
-
3.2
4
.3
.3
.27
.25
.25
.075
.075
.075
.075
.075
1.1
1.1
1.1
1.0
1.0
800
800
900
1000
1000
120
144
1080
1.5
1.92
30
-
-
.38
.48
2.83:1
2.58:1
1:1
28:1
25:1
5.66:1
-
-
56:1
50:1
60.80
71.30
71.30
49.36
49.36
W-26450
W-26455
W-26460
W-26465
W-26470
10,000ct
10,000ct
10,000ct
10,000ct
10,000ct
100ct
200ct
500ct
600ct
1000ct
25
50
125
150
250
.25
.25
.25
.25
.25
.075
.075
.075
.075
.075
1.0
1.0
1.0
1.0
1.0
1000
1000
1000
1000
1000
12
24
60
72
120
3
6
15
18
30
10:1
7.07:1
4.47:1
4.08:1
3.16:1
20:1
14.14:1
8.94:1
8.16:1
6.32:1
54.60
54.60
54.60
54.60
54.60
W-26475
W-26480
W-26485
W-26490
W-26495
10,000ct
10,000ct
10,000ct
10,000ct
10,000ct
1200ct
1500ct
2000ct
5000ct
7500ct
300
375
500
1250
1875
.25
.25
.25
.25
.25
.075
.075
.075
.075
.075
1.0
1.0
1.0
1.0
1.0
1000
1000
1000
1000
1000
144
180
240
600
900
36
45
60
150
225
2.89:1
2.58:1
2.24:1
1.41:1
1.15:1
5.77:1
5.16:1
4.47:1
2.83:1
2.3:1
64.44
64.44
63.09
63.09
64.44
W-26500
W-26505
W-26510
W-26515
W-26520
10,000ct
*10,000ct
15,000ct
15,000ct
15,000ct
10,000ct
10,000ct
400ct
500ct
600ct
2500
-
100
125
150
.25
.25
.16
.16
.16
.075
.075
.075
.075
.075
1.0
1.0
.82
.82
.82
1000
1000
1500
1500
1500
1200
1200
48
60
72
300
-
12
15
18
1:1
1:1
6.12:1
5.48:1
5:1
2:1
-
12.24:1
10.95:1
10:1
63.09
71.30
62.19
62.19
62.19

Ultra Miniature Transformers:
W Series

Pico
Part
Number
W Series
Prim.
Imped.
Ohms
Sec.
Imped.
Ohms
Split
Windings
Power
Watts
Prim.
Unbal.
DC
Curr.
ma
Prim.
DC
Resist.
Ohms
Sec.
DC
Resist.
Ohms
Turns Ratio
Prim/Sec.
Prices
1-9 ***

(US $)
SER
PAR
1 KHz
and
higher
400 Hz
and
higher
Ser
Conn
Par
Conn
Sec
Ser
Conn
Sec
Par
Conn
W-26525
W-26530
W-26535
W-26540
W-26545
15,000ct
*15,000ct
15,000ct
16,000ct
20,000ct
10,000ct
15,000ct
15,000ct
1000ct
500ct
2500
-
3750
250
125
.16
.16
.16
.15
.125
.075
.075
.075
.075
.075
.82
.82
.82
.8
.7
1500
1500
1500
1600
2000
1200
1800
1800
120
60
300
-
450
30
15
1.22:1
1:1
1:1
4:1
6.33:1
2.45:1
-
2:1
8:1
12.65:1
62.19
71.30
64.21
64.21
62.19
W-26550
W-26555
W-26560
W-26565
W-26570
20,000ct
20,000ct
20,000ct
20,000ct
20,000ct
600ct
800ct
1000ct
5000ct
10,000ct
150
200
250
1250
2500
.125
.125
.125
.125
.125
.075
.075
.075
.075
.075
.7
.7
.7
.7
.7
2000
2000
2000
2000
2000
72
96
120
600
1200
18
24
30
150
300
5.77:1
5:1
4.47:1
2:1
1.41:1
11.55:1
10:1
8.94:1
4:1
2.83:1
62.19
56.86
71.30
62.19
62.19
W-26575
W-26580
W-26585
W-26590
W-26595
*20,000ct
25,000ct
25,000ct
30,000ct
30,000ct
20,000ct
500ct
1000ct
50ct
1200ct
-
125
250
12.5
300
.125
.1
.1
.083
.083
.075
.075
.075
.075
.075
.7
.63
.63
.58
.58
2000
2500
2500
3000
3000
2400
60
120
6
144
-
15
30
1.5
36
1:1
7.07:1
5:1
24.5:1
5:1
-
14.14:1
10:1
49:1
10:1
71.30
64.44
64.44
64.44
64.44
W-26600
W-26605
W-26610
W-26615
W-26620
W-26625
30,000ct
30,000ct
30,000ct
30,000ct
*30,000ct
40,000ct
500ct
200ct
5000ct
10,000ct
30,000ct
400ct
125
50
1250
2500
-
100
.083
.083
.083
.083
.083
.062
.075
.075
.075
.075
.075
.062
.58
.58
.58
.58
.58
.5
3000
3000
3000
3000
3000
4000
60
24
600
1200
3600
48
15
6
150
300
-
12
7.75:1
12.25:1
2.45:1
1.73:1
1:1
10:1
15.5:1
24.5:1
4.9:1
3.46:1
-
20:1
64.44
64.44
64.44
64.44
71.30
71.30
W-SHIELD: MU-METAL SHIELD .37" d x .32" h (9.4 mm d x 8.1 mm h) SINGLE SHIELD
WXX-SHIELD: MU-METAL SHIELD .395" d x .33" h (10 mm d x 8.4 mm h) USE WITH W-SHIELD FOR DOUBLE SHIELDING
8.52
8.52
* Includes Electrostatic Shield
**Discount Prices:
    1-9 Net;
    10-24 less 10%;
    25-49 less 16%;
    50-99 less 23%;
    100-499 less 30%
Ordering Instructions:
    No minimum.
    Net 30 days F.O.B. Pelham, NY
    Delivery--stock to one week for sample orders.

Click Here For Surface Mount Version of W Series

 
FEATURES
  • Extreme resistance to thermal shock
  • Ultra miniature size
  • PICO is approved QPL Source (Mil-PRF-27)
  • Magnetic Shields available
  • Electrostatic shielding can be added
  • Variation of standard designs available
  • Special production techniques ensure uniform size and leads which are free of encapsulant. No meniscus in lead area.
  • Every unit can be made with a 300 thermal cycle guarantee using PICO's special SR construction. Contact factory for details.

INDUCTORS

PART NUMBERS
INDUCTANCE
SERIES
DC
CURRENT
ma
DC
RESISTANCE
OHMS
PRICE 1-9*** (US $)
W-26705
SERIES 0.1
.08

PARALLEL .025
.02
4
10

8
20
25

6.5
49.36
W-26710
SERIES 0.9
0.5

PARALLEL .23
.13
2
6

4
12
105

26
49.36
W-26715
SERIES 2.5
0.9

PARALLEL 0.6
0.23
2
4

4
8
630

160
49.36
W-26720
SERIES 4.5
1.2

PARALLEL 1.1
0.3
2
4

4
8
2300

575
49.36

Inductors: All inductors have split windings and measurements are listed for both series and parallel connections. Two values of inductance, each at a particular value of DC Current, are listed for each inductor.
Delivery - stock to one week for sample orders.


For immediate engineering assistance or to place an order:
Call Toll Free: 800-431-1064

PICO Electronics, Inc.

143 Sparks Ave. Pelham, NY 10803-1810
Tel: 914-738-1400 or Fax: 914-738-8225

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