Ultra Miniature Transformers
S Series PlugIn
The PICO "S Series" units can be manufactured and tested to MILPRF27/359. Contact
factory for price and delivery information and appropriate part numbers (MILPRF
27/35901 thru MILPRF27/359147).
Specifications:
MILPRF27: All units manufactured to MILPRF27, Grade 5, Class S.
FREQUENCY RESPONSE: ±3db, 50 Hz 30 KHz at 1.0 Milliwatt. (±0.5 db, 300 Hz 5 Khz).
MAXIMUM DISTORTION: 5% With Rated Power Level at 1 KHz, 300 Hz and 50 Hz.
DIELECTRIC STRENGTH: All Units Tested at 200 V RMS.
INSULATION RESISTANCE: Greater Than 10,000 Megohms at 300 V DC.
WEIGHT: 17 Grams.
OPERATING TEMPERATURE: 55º C to +130º C.
TERMINALS: Solid .020 Diameter Conductor. Solderability per MILSTD202 Method 208.
THERMAL SHOCK: 25 Cycles, Method 107, MILSTD202, Test Condition 55º C to +130º C.
Larger size drawing of S Series
Ultra Miniature Transformers:
S Series
Pico Prim.
Part Imped.
Number Ohms
Sec.
Imped.
Ohms
Split
Windings
1
SER PAR KHz
and
8ct
20ct
32ct
40ct
16ct
2
5
8
10
4
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
Power
Watts
higher higher
Turns Ratio
Prim.
Prim.
Prim/Sec. Prices
Unbal.
DC
19
DC
Resist.
***
Curr.
300
50 Hz ma Ohms Ser Par Sec Sec (US $)
Hz
Ser Par
and
Conn Conn
and
higher
Conn Conn
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
22
22
17.5
16
14.5
14
11
10
10
9
1.6
1.6
2.56
3.2
3.84
4
6.4
8
8
9.6
.88
2.2
3.52
4.4
1.76
5.5
3.52
4.4
11
1.41
.22
.55
.88
1.1
.44
1.58:1 3.16:1 60.16
1:1
2:1 60.16
1:1
2:1 60.16
1:1
2:1 60.16
1.73:1 3.46:1 60.16
Sec.
DC
Resist.
Ohms
S21003
S21005
S21010
S21015
S21018
20ct
20ct
32ct
40ct
48ct
S21020 50ct 50ct 12.5
S21025 80ct 32ct
8
S21028 100ct 40ct
10
S21030 100ct 100ct 25
S21035 120ct 12.8ct 3.2
1.38 1:1
2:1 60.16
.88 1.58:1 3.16:1 60.16
1.1 1.58:1 3.16:1 60.16
2.75 1:1
2:1 60.16
.35 3.06:1 6.12:1 60.16
Ultra Miniature Transformers:
S Series
Sec.
Imped.
Ohms
Pico Prim.
Split
Part Imped. Windings
Number Ohms
Sec.
DC
Resist.
Ohms
Power
Watts
1
SER PAR KHz
and
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
300
Hz
and
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
higher higher higher
Turns Ratio
Prim.
Prim.
Prim/Sec. Prices
Unbal.
DC
19
DC
Resist.
***
Curr.
50
Ohms
Sec
Sec (US $)
ma
Ser Par
Hz
Ser
Par
Conn Conn
and
Conn Conn
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
9
9
8
8
8
8
8
7
5.5
5.5
5.5
5.5
5.5
5.5
5
5
5
5
5
5
5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4
4
9.6
9.6
12
12
12
12
12
16
24
24
24
24
24
25.6
32
32
32
32
32
32
32
40
40
40
40
40
40
40
48
48
6.6
13.2
1.32
5.5
11
16.5
66
22
1.32
5.5
16.5
33
66
1.41
4.4
13.2
22
44
110
220
440
1.41
1.76
5.5
16.5
1.65
3.3
.33
1.38
2.75
1.41:1
1:1
3.54:1
1.73:1
1.22:1
2.83:1
2:1
7.08:1
3.46:1
2.44:1
2:1
1:1
2:1
10:1
4.9:1
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
60.16
62.55
60.16
60.16
60.16
S21040
S21045
S21050
S21055
S21060
S21065
S21070
S21075
S21080
S21085
S21090
S21095
S21100
S21105
S21110
S21115
S21120
S21125
S21130
S21135
S21140
S21142
S21144
S21145
S21147
S21150
S21155
S21160
S21165
S21167
S21170
120ct 60ct
15
120ct 120ct 30
150ct 12ct
3
150ct 50ct 12.5
150ct 100ct 25
150ct 150ct 37.5
150ct 600ct 150
200ct 200ct 50
300ct 12ct
3
300ct 50ct 12.5
300ct
300ct
300ct
320ct
400ct
400ct
400ct
400ct
400ct
400ct
150ct 37.5
300ct 75
600ct 150
12.8ct 3.2
40ct
10
120ct 30
200ct 50
400ct 100
1000ct 250
2000ct 500
4.13 1:1
16.5 1:2
5.5
1:1
.33
5:1
1.38 2.45:1
4.13 1.41:1 2.83:1
8.25 1:1
2:1
16.5 1:1.41 1.41:1
.35
5:1
10:1
1.1 3.16:1 6.32:1
3.3
5.5
11
27.5
55
110
.35
.44
1.38
4.13
1.83:1
1.41:1
1:1
1:1.58
1:2.24
1:3.16
6.25:1
5.6:1
3.16:1
1.83:1
3.65:1
2.83:1
2:1
1.26:1
1:1.12
1:1.58
12.5:1
11.2:1
6.32:1
3.65:1
400ct 4000ct 1000
500ct 12.8ct 3.2
500ct 16ct
4
500ct 50ct 12.5
500ct 150ct 37.5
500ct
*500ct
500ct
600ct
600ct
500ct
500ct
600ct
12.8ct
30ct
125
150
3.2
7.5
55 13.75 1:1
2:1
55
1:1
66
16.5 1:1.1 1.83:1
1.41 .35 6.85:1 13.7:1
3.3
.83 4.47:1 8.94:1
S21175
S
21180**
S
21185**
S
21186**
S
21187**
S21190
S21195
S21200
S21205
S21210
S21215
S
21217**
S21220
S21225
S21230
S21235
S21240
S21245
S21250
600ct
600ct
600ct
*600ct
*600ct
48ct
200ct
600ct
600ct
900ct
12
50
150
2.0
2.0
2.0
2.0
2.0
1.5
1.5
1.5
1.5
1.5
.03
.03
.03
.03
.03
4
4
4
4
4
48
48
48
48
48
5.28
22
66
66
99
1.37 3.54:1 7.07:1
5.5 1.73:1 3.46:1
16.5 1:1
2:1
1:1
1:1.22
60.16
60.16
60.16
62.55
62.55
600ct
640ct
700ct
800ct
800ct
800ct
900ct
*900ct
1000ct
1000ct
1000ct
1060ct
1200ct
1200ct
1200ct
1200ct 300
12.8ct 3.2
100ct 25
12.8ct 3.2
48ct
12
800ct 200
600ct 150
900ct
12ct
3
50ct 12.5
1000ct
12.8ct
12.8ct
500ct
1200ct
250
3.2
3.2
125
300
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
4
4
3.5
3.5
3.5
3.5
3
3
3
3
3
3
3
3
3
48
51
56
64
64
64
72
72
80
80
80
85
96
96
96
132
1.41
11
1.41
5.28
88
66
99
1.32
5.5
33
.35
2.75
.35
1.32
1:1.41
7.07:1
2.65:1
7.91:1
4.08:1
1.41:1
14.14:1
5.29:1
15.8:1
8.16:1
60.16
60.16
60.16
60.16
60.16
22
1:1
2:1
60.16
16.5 1.23:1 2.45:1 60.16
1:1
62.55
.33 9.13:1 18.26:1 60.16
1.38 4.47:1 8.94:1 60.16
60.16
60.16
60.16
60.16
60.16
110 27.5 1:1
2:1
1.41 .35 9.1:1 18.2:1
1.41 .35 9.68:1 19.4:1
55 13.75 1.55:1 3.1:1
132
33
1:1
2:1
Ultra Miniature Transformers:
S Series
Sec.
Imped.
Ohms
Split
Windings
SER
S21255 *1200ct
S21260 1500ct
S21265 1500ct
S21270 *1500ct
S21275 *1500ct
S21280 1600ct
S21283 2000ct
S21285 2000ct
S21290 *2000ct
S21295 2000ct
S21297 2500ct
S21300 3000ct
S21305 *3000ct
S21310
S21312
S
21314**
S21315
S21320
S21325
S21330
S21335
S21340
S21345
3600ct
4000ct
4000ct
4000ct
*4000ct
5000ct
5000ct
7500ct
7500ct
7500ct
Sec.
DC
Resist.
Ohms
Pico
Part
Number
Prim.
Imped.
Ohms
Power
Watts
1 300
PAR KHz Hz
and and
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
1.3
1.3
1.3
1.3
1.3
1.2
1.2
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.3
1.3
1.3
1.3
1.3
1.2
1.2
higher higher higher
Turns Ratio
Prim.
Prim.
Prim/Sec. Prices
Unbal.
DC
19
DC
Resist.
***
Curr.
50
Ohms
Sec
Sec (US $)
ma
Ser Par
Hz
Ser
Par
Conn Conn
and
Conn Conn
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
3
2.5
2.5
2.5
2.5
2.5
2.2
2.2
2.2
2.2
2
1.8
1.8
1.7
1.6
1.6
1.6
1.6
1.4
1.4
1.2
1.2
1.2
1.2
1.2
1.1
1.1
96
120
120
120
120
128
160
160
160
160
200
240
240
288
320
320
320
320
400
400
600
600
600
600
600
640
640
132
1:1
62.55
1.32 .33 11.18:1 22.36:1 60.16
55 13.75 1.73:1 3.46:1 60.16
66
1.58:1
62.55
165
1:1
62.55
1.41
.88
220
220
880
275
330
330
.35 11.18:1 22.36:1 60.16
.22 15.8:1 31.6:1 60.16
55
1:1
2:1
60.16
1:1
62.55
220
1:2
1:1
62.55
69
83
1:1
1:1
1:1
2:1
2:1
62.55
62.55
62.55
1200ct
12ct
3
500ct 125
600ct
1500ct
12.8ct 3.2
8ct
2
2000ct 500
2000ct
8000ct 2000
2500ct 625
3000ct 750
3000ct
3600ct 900
16ct
4
600ct 150
1000ct 250
8000ct
500ct
5000ct
50ct
100ct
600ct
125
1250
12.5
25
150
396 99
1:1
2:1
62.55
1.76 .44 15.8:1 31.6:1 62.55
66 16.5 2.58:1 5.16:1 62.55
110 27.5
2:1
4:1
62.55
880
1:1.41
62.55
55
550
5.5
11
66
275
825
1.4
110
13.8
138
1.38
2.75
16.5
3.16:1
1:1
12.25:1
8.66:1
3.54:1
6.32:1
2:1
24.5:1
17.32:1
7.07:1
60.16
60.16
66.62
66.62
61.57
66.62
72.01
66.62
66.62
S21350 7500ct
S21355 *7500ct
S21360 8000ct
S21365 8000ct
2500ct 625
7500ct
12.8ct 3.2
1000ct 250
69 1.73:1 3.46:1
1:1
.35
25:1
50:1
27.5 2.83:1 5.66:1
S21370 *8000ct
S21375
S21380
S21385
S21390
S21395
S21400
S21405
S21410
S21415
S21420
S21425
S21430
S21435
S21440
S21445
S21450
S21452
S21455
S21460
S21465
*9000ct
10,000ct
10,000ct
10,000ct
10,000ct
10,000ct
10,000ct
10,000ct
10,000ct
10,000ct
10,000ct
10,000ct
10,000ct
10,000ct
*10,000ct
1200ct
9000ct
12.8ct
16ct
100ct
200ct
500ct
600ct
1000ct
1200ct
1500ct
2000ct
5000ct
7500ct
10,000ct
10,000ct
3.2
4
25
50
125
150
250
300
375
500
1250
1875
2500
100
125
150
2500
1.2
1.1
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
.65
.65
.65
.65
.65
1.2
1.1
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
.65
.65
.65
.65
.65
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
1.1
1.1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
.8
.8
.8
.8
.8
640
720
800
800
800
800
800
800
800
800
800
800
800
800
800
800
1200
1200
1200
1200
1200
132
2.58:1
72.01
72.01
66.62
66.62
66.62
66.62
990
1:1
1.4 .35
28:1
56:1
1.76 .44
25:1
50:1
11 2.75 10:1
20:1
22
5.5 7.07:1 14.14:1
55 13.75 4.47:1 8.94:1 66.62
66 16.5 4.08:1 8.16:1 66.62
110 27.5 3.16:1 6.32:1 66.62
132 33 2.89:1 5.77:1 66.62
165 41.3 2.58:1 5.16:1 66.62
220
550
825
1100
1100
55
138
206
275
2.24:1 4.47:1 66.62
1.41:1 1.83:1 66.62
1.16:1 2.31:1 66.62
1:1
2:1
66.62
1:1
72.01
15,000ct 400ct
15,000ct 500ct
15,000ct 600ct
15,000ct 10,000ct
*15,000ct 15,000ct
44
11 6.12:1 12.25:1 66.62
55 13.8 5.48:1 10.95:1 66.62
66 16.5
5:1
10:1 66.62
1100 275 1.22:1 2.45:1 66.62
1650
1:1
72.01
Ultra Miniature Transformers:
S Series
Sec.
Imped.
Ohms
Split
Windings
SER
S21470
S21475
S21480
S21485
S21490
S21495
S21500
S21505
S21510
S21515
S21520
S21525
S21530
S21532
S21534
S21535
S21540
S21545
S21550
S21555
S21560
S21565
S21570
S21575
S21577
S21578
S21579
S21580
S21585
S21587
Sec.
DC
Resist.
Ohms
Pico
Part
Number
Prim.
Imped.
Ohms
Power
Watts
1 300
PAR KHz Hz
and and
.65
.62
.5
.5
.5
.5
.5
.5
.5
.4
.4
.33
.33
.33
.33
.33
.33
.33
.25
.25
.25
.25
.25
.2
.2
.65
.62
.5
.5
.5
.5
.5
.5
.5
.4
.4
.33
.33
.33
.33
.33
.33
.33
.25
.25
.25
.25
.25
.2
.2
.2
.2
.16
.16
.12
higher higher higher
Turns Ratio
Prim.
Prim.
Prim/Sec. Prices
Unbal.
DC
19
DC
Resist.
***
50 Curr. Ohms
Sec Sec (US $)
ma
Ser Par
Hz
Ser Par
Conn Conn
and
Conn Conn
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.03
.8
.8
.7
.7
.7
.7
.7
.7
.7
.6
.6
.6
.6
.6
.6
.6
.6
.6
.5
.5
.5
.5
.5
.4
.4
.4
.4
.4
.4
.3
1200
1280
1600
1600
1600
1600
1600
1600
1600
2000
2000
2400
2400
2400
2400
2400
2400
2400
3200
3200
3200
3200
3200
4000
4000
4000
4000
4800
5000
6400
1650 413 1:1
2:1
66.62
110 27.5 4:1
8:1
66.62
55 13.8 6.32:1 12.65:1 72.01
66 16.5 5.77:1 11.55:1 72.01
88
22
5:1
10:1 72.01
110 27.5 4.47:1 8.94:1
550 138 2:1
4:1
1100 275 1.41:1 2.83:1
2200
1:1
55 13.8 7.07:1 14.14:1
110
5.5
132
55
22
72.01
72.01
72.01
74.17
72.01
15,000ct 15,000ct 3750
16,000ct 1000ct 250
20,000ct 500ct
125
20,000ct 600ct
150
20,000ct 800ct
200
20,000ct
20,000ct
20,000ct
*20,000ct
25,000ct
25,000ct
30,000ct
30,000ct
30,000ct
30,000ct
30,000ct
30,000ct
*30,000ct
40,000ct
40,000ct
1000ct 250
5000ct 1250
10,000ct 2500
20,000ct
500ct
125
1000ct
50ct
1200ct
500ct
200ct
250
12.5
300
125
50
27.5 5:1
10:1 72.01
1.38 24.5:1 49:1 74.17
33
5:1
10:1 74.17
13.8 7.7:1 15.5:1 74.17
5.5 12.2:1 24.5:1 74.17
74.17
74.17
79.74
79.74
79.74
5000ct 1250
10,000ct 2500
30,000ct
400ct
100
2000ct 500
550 137.5 2.45:1 4.9:1
1100 275 1.73:1 3.46:1
3300
1:1
44
11 10:1 20:1
220 55 4.47:1 8.94:1
40,000ct 4000ct 1000
40,000ct 20,000ct 5000
*40,000ct 40,000ct
50,000ct 200ct
50
50,000ct 500ct
125
440 110 3.16:1 6.32:1 79.74
2200 550 1.41:1 2.83:1 79.74
4400
1:1
88.81
22
5.5 15.8:1 31.6:1 88.81
55 13.8 10:1 20:1 88.81
66 16.5 9.13:1 18.26:1
5500 1380 1:1
2:1
1650 413 2:1
4:1
5.5 1.38 35.4:1 70.7:1
1650 413 2.3:1 4.6:1
88.81
88.81
89.60
89.60
89.60
50,000ct 600ct
150
.2
50,000ct 50,000ct 12,500 .2
60,000ct 15,000ct 3750 .16
62,500ct 50ct
12.5 .16
80,000ct 15,000ct 3750 .12
S21590
S21595
S21600
S21605
S21610
S21613
S21614
S21615
S21620
90,000ct 10,000ct 2500
95,000ct 15,000ct 3750
100,000ct 60ct
15
100,000ct 100ct
25
100,000ct 500ct
125
100,000ct 1000ct 250
100,000ct 2000ct 500
100,000ct 10,000ct 2500
135,000ct 82ct
20.5
.11
.1
.1
.1
.1
.1
.1
.1
.07
.11
.1
.1
.1
.1
.1
.1
.1
.07
.03
.03
.03
.03
.03
.03
.03
.03
.03
.3
.3
.3
.3
.3
.3
.3
.3
.2
7200
7600
8000
8000
8000
1100 275 3:1
6:1
1650 413 2.5:1 5:1
6.6 1.65 40.8:1 81.6:1
11 2.75 31.6:1 63.2:1
55 13.8 14.1:1 28.3:1
100.67
100.67
100.67
100.67
100.67
8000 110 27.5 10:1 20:1 100.67
8000 220 55 7.07:1 14.14:1 100.67
8000 1100 275 3.16:1 6.32:1 100.67
10,800 9 2.25 40.6:1 81.2:1 105.18
*Includes electrostatic shield
**Miniaturized telephone coupling
application
For Surface Mount Versions of this series click here
Ordering Instructions:
No minimum.
Net 30 days F.O.B. Pelham, NY
Delivery stock to one week for
sample orders.
***Discount Prices:
19 Net;
1024 less 10%;
2549 less 16%;
5099 less 23%;
100499 less 30%
FEATURES
Extreme resistance to thermal shock
Ultra miniature size
PICO is approved QPL Source (MilPRF27)
Magnetic Shields available
Electrostatic shielding can be added
Variation of standard designs available
Primary and secondary windings can be used either as input or output.
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.
For immediate engineering assistance or to place an order:
Call Toll Free: 8004311064
PICO Electronics, Inc.
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