Ultra Miniature Transformers
R Series PlugIn
Specifications:
MILPRF27: All units manufactured to MILPRF27, Grade 5, Class S.
FREQUENCY RESPONSE: ±3db, 75 Hz 30 KHz at 1.0 Milliwatt.
MAXIMUM DISTORTION: 5% With Rated Power Level at 1 KHz, 300 Hz and 75 Hz.
DIELECTRIC STRENGTH: All Units Tested at 200 V RMS.
INSULATION RESISTANCE: Greater Than 10,000 Megohms at 300 V DC.
WEIGHT: 12 Grams.
OPERATING TEMPERATURE: 55º C to +130º C
TERMINALS: Solid .016 Diameter Conductor. Solderability per MILSTD202 Method 208.
THERMAL SHOCK: 25 Cycles, Method 107, MILSTD202, Test Condition 55º C to +130º C
For Surface Mount Equivalent of this series click here
Larger size drawing of R Series
Ultra Miniature Transformers:
R Series
Sec.
Imped.
Ohms
Split
Pico Prim.
Part Imped. Windings
Number Ohms
Turns Ratio
Prim.
Prim/Sec. Prices
Prim.
Unbal.
DC
19
DC
Resist.
***
Curr.
300
1 KHz
75 Hz ma Ohms
Sec Sec (US $)
Hz
Ser Par
SER PAR and
and
Ser Par
and
Conn Conn
higher
higher
Conn Conn
higher
8ct
20ct
32ct
40ct
16ct
2
5
8
10
4
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.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
.76
1.9
3
3.8
1.52
4.75
3
3.8
9.5
1.22
.19
.48
.75
.95
.38
1.58:1 3.16:1 72.20
1:1
2:1 72.20
1:1
2:1 72.20
1:1
2:1 72.20
1.73:1 3.46:1 72.20
Power
Watts
Sec.
DC
Resist.
Ohms
R20003
R20005
R20010
R20015
R20018
20ct
20ct
32ct
40ct
48ct
R20020 50ct 50ct 12.5
R20025 80ct 32ct
8
R20028 100ct 40ct 10
R20030 100ct 100ct 25
R20035 120ct 12.8ct 3.2
1.19 1:1
2:1 72.20
.75 1.58:1 3.16:1 72.20
.95 1.58:1 3.16:1 72.20
2.38 1:1
2:1 72.20
.3 3.06:1 6.12:1 72.20
Ultra Miniature Transformers:
R Series
Sec.
Imped.
Ohms
Split
Pico Prim.
Part Imped. Windings
Number Ohms
Sec.
DC
Resist.
Ohms
Turns Ratio
Prim.
Prim/Sec. Prices
Prim.
Unbal.
DC
19
DC
Resist.
***
Curr.
300
1 KHz
75 Hz ma Ohms
Sec Sec (US $)
Hz
Ser Par
SER PAR and
and
Ser Par
and
Conn Conn
higher
higher
Conn Conn
higher
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
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.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
5.7 1.4 1.14:1 2.83:1 72.20
11.4 2.85 1:1
2:1
72.20
1.14 .29 3.54:1 7.08:1 72.20
4.75 1.19 1.73:1 3.46:1 72.20
9.5 2.38 1.22:1 2.44:1 72.20
14.3
57
19
1.14
4.75
3.56 1:1
2:1
14.3 1:2
1:1
4.75 1:1
2:1
.29
5:1
10:1
1.19 2.45:1 4.9:1
72.20
72.20
72.20
72.20
72.20
72.20
72.20
72.20
72.20
72.20
72.20
72.20
72.20
72.20
72.20
72.20
72.20
72.20
72.20
72.20
Power
Watts
R20040
R20045
R20050
R20055
R20060
R20065
R20070
R20075
R20080
R20085
R20090
R20095
R20100
R20105
R20110
R20115
R20120
R20125
R20130
R20135
R20140
R20142
R20144
R20145
R20147
R20150
R20155
R20160
R20165
R20167
R20170
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
300ct
600ct
12.8ct
40ct
120ct
200ct
400ct
1000ct
2000ct
37.5
75
150
3.2
10
30
50
100
250
500
14.25 3.56 1.41:1 2.83:1
28.5 7.13 1:1
2:1
57 14.25 1:1.41 1.41:1
1.22 .3
5:1
10:1
3.8 .95 3.16:1 6.32:1
11.4
19
38
95
190
2.85
4.75
9.5
23.8
47.5
1.83:1
1.41:1
1:1
1:1.58
1:2.24
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
380 95 1:3.16
1.22 .3 6.25:1
1.52 .38 5.6:1
4.75 1.19 3.16:1
14.25 3.56 1.83:1
47.5 11.88 1:1
2:1
72.20
47.5
1:1
76.79
57 14.25 1:1.1 1.83:1 72.20
1.22 .3 6.85:1 13.7:1 72.20
2.85 .71 4.47:1 8.94:1 72.20
R20175
R
20180**
R
20185**
R
20186**
R
20187**
R20190
R20195
R20200
R20205
R20210
R20215
R
20217**
R20220
R20225
R20230
R20235
R20240
R20245
R20250
600ct
600ct
600ct
*600ct
*600ct
48ct 12
200ct 50
600ct 150
600ct
900ct
1.5
1.5
1.5
1.5
1.5
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
4
4
4
4
4
48
48
48
48
48
4.56 1.14 3.54:1 7.07:1 72.20
19 4.75 1.73:1 3.46:1 72.20
57 14.25 1:1
2:1
72.20
57
1:1
76.79
85.5
1:1.22
76.79
600ct
640ct
700ct
800ct
800ct
800ct
900ct
*900ct
1000ct
1000ct
1000ct
1060ct
1200ct
1200ct
1200ct
1200ct
12.8ct
100ct
12.8ct
48ct
300
3.2
25
3.2
12
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
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.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
51.2
56
64
64
64
72
72
80
80
80
85
96
96
96
114 28.5 1:1.41 1.41:1 72.20
1.22 .3 7.07:1 14.14:1 72.20
9.5 2.38 2.65:1 5.29:1 72.20
1.22 .3 7.91:1 15.8:1 72.20
4.56 1.14 4.08:1 8.16:1 72.20
76
19
1:1
2:1
57 14.3 1.23:1 2.45:1
85.5
1:1
1.14 .29 9.13:1 18.26:1
4.75 1.19 4.47:1 8.94:1
72.20
72.20
76.79
72.20
72.20
800ct 200
600ct 150
900ct
12ct
3
50ct 12.5
1000ct
12.8ct
12.8ct
500ct
1200ct
250
3.2
3.2
125
300
95 23.8 1:1
2:1
72.20
1.22 .3 9.1:1 18.2:1 72.20
1.22 .3 9.68:1 19.4:1 72.20
47.5 11.88 1.55:1 3.1:1 72.20
114 28.5 1:1
2:1
72.20
Ultra Miniature Transformers:
R Series
Sec.
Imped.
Ohms
Split
Windings
SER
R20255 *1200ct
R20260 1500ct
R20265 1500ct
R20270 *1500ct
R20275 *1500ct
R20280 1600ct
R20283 2000ct
R20285 2000ct
R20290 *2000ct
R20295 2000ct
R20297 2500ct
R20300 3000ct
R20305 *3000ct
R20310
R20312
R
20314**
R20315
R20320
R20325
R20330
R20335
R20340
R20345
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
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
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
higher higher higher
Turns Ratio
Prim.
Prim.
Prim/Sec. Prices
Unbal.
DC
19
DC
Resist.
***
Curr.
75
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
114
1:1
76.79
1.14 .29 11.18:1 22.36:1 72.20
47.5 11.88 1.73:1 3.46:1 72.20
57
1.58:1
76.79
142
1:1
76.79
1.22
3 11.18:1 22.36:1 72.20
.76 .19 15.8:1 31.6:1 72.20
190 47.5
1:1
2:1
72.20
190
1:1
76.79
760 190
1:2
1:1
72.20
238
285
285
59.5
71.3
1:1
1:1
1:1
2:1
2:1
72.20
72.20
76.79
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
342 86
1:1
2:1
72.20
1.52 .38 15.8:1 31.6:1 72.20
57 14.3 2.58:1 5.16:1 72.20
95 23.8
2:1
4:1
72.20
760
1:1.41
76.79
47.5
475
4.75
9.5
57
11.88
119
1.19
2.38
14.3
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
72.20
72.20
82.13
82.13
82.13
R20350 7500ct
R20355 *7500ct
R20360 8000ct
R20365 8000ct
2500ct 625
7500ct
12.8ct 3.2
1000ct 250
238 59.5 1.73:1 3.46:1 82.13
713
1:1
87.43
1.22 .3
25:1
50:1 82.13
95 23.8 2.83:1 5.66:1 82.13
R20370 *8000ct
R20375
R20380
R20385
R20390
R20395
R20400
R20405
R20410
R20415
R20420
R20425
R20430
R20435
R20440
R20445
R20450
R20452
R20455
R20460
R20465
*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
.66
.66
.66
.66
.66
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.9
.66
.66
.66
.66
.66
.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
114
2.58:1
87.43
87.43
82.13
82.13
82.13
82.13
82.13
82.13
82.13
82.13
82.13
855
1:1
1.22 .3
28:1
56:1
1.52 .38
25:1
50:1
9.5 2.38 10:1
20:1
19 4.75 7.07:1 14.14:1
47.5
57
95
114
143
190
475
713
950
950
11.88
14.25
23.8
28.5
35.8
4.47:1
4.08:1
3.16:1
2.89:1
2.58:1
8.94:1
8.16:1
6.32:1
5.77:1
5.16:1
47.5 2.24:1 4.47:1 82.13
119 1.41:1 2.83:1 82.13
178 1.16:1 2.31:1 82.13
238
1:1
2:1
82.13
1:1
87.62
15,000ct 400ct
15,000ct 500ct
15,000ct 600ct
15,000ct 10,000ct
*15,000ct 15,000ct
38
9.5 6.12:1 12.25:1 82.13
48
12 5.48:1 10.95:1 82.13
57 14.3
5:1
10:1 82.13
950 238 1.22:1 2.45:1 82.13
1430
1:1
87.62
Ultra Miniature Transformers:
R Series
Sec.
Imped.
Ohms
Split
Windings
SER
R20470
R20475
R20480
R20485
R20490
R20495
R20500
R20505
R20510
R20515
R20520
R20525
R20530
R20532
R20534
R20535
R20540
R20545
R20550
R20555
R20560
R20565
R20570
R20575
R20577
R20578
R20579
R20580
R20585
R20587
Sec.
DC
Resist.
Ohms
Pico
Part
Number
Prim.
Imped.
Ohms
Power
Watts
1 300
PAR KHz Hz
and and
.66
.62
.5
.5
.5
.5
.5
.5
.5
.4
.4
.33
.33
.33
.33
.33
.33
.33
.25
.25
.25
.25
.25
.2
.2
.66
.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.
***
75 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
1430 357 1:1
2:1
82.13
95 23.8 4:1
8:1
82.13
47.5 11.88 6.32:1 12.65:1 87.57
57 14.25 5.77:1 11.55:1 87.57
76
19
5:1
10:1 87.57
95 23.8 4.47:1 8.94:1
475 119 2:1
4:1
950 238 1.41:1 2.83:1
1900
1:1
47.5 11.88 7.07:1 14.14:1
95
4.75
114
47.5
19
87.57
87.57
87.57
91.04
87.57
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
23.8 5:1
10:1 87.57
1.19 24.5:1 49:1 91.04
28.5 5:1
10:1 91.04
11.88 7.7:1 15.5:1 91.04
4.75 12.2:1 24.5:1 91.04
5000ct 1250
10,000ct 2500
30,000ct
400ct
100
2000ct 500
475 119 2.45:1 4.9:1 91.04
950 238 1.73:1 3.46:1 91.04
2850
1:1
98.07
38
9.5 10:1 20:1 98.07
190 47.5 4.47:1 8.94:1 98.07
380 95
1900 475
3800
19 4.75
47.5 11.88
3.16:1 6.32:1 98.07
1.41:1 2.83:1 98.07
1:1
108.88
15.8:1 31.6:1 108.88
10:1 20:1 108.88
108.88
108.88
117.60
117.60
117.60
40,000ct 4000ct 1000
40,000ct 20,000ct 5000
*40,000ct 40,000ct
50,000ct 200ct
50
50,000ct 500ct
125
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
57 14.3 9.13:1 18.26:1
4750 1190 1:1
2:1
1430 358 2:1
4:1
4.75 1.19 35.4:1 70.7:1
1430 358 2.3:1 4.6:1
R20590
R20595
R20600
R20605
R20610
R20613
R20614
R20615
R20620
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
8000
8000
8000
10,800
950 238 3:1
6:1
1430 358 2.5:1 5:1
5.7 1.43 40.8:1 81.6:1
9.5 2.38 31.6:1 63.2:1
47.5 11.88 14.1:1 28.3:1
95
190
950
7.8
117.60
123.45
123.45
123.45
123.45
23.8 10:1 20:1 123.45
47.5 7.07:1 14.14:1 123.45
238 3.16:1 6.32:1 123.45
1.9 40.6:1 81.2:1 128.97
*Includes electrostatic shield
**Miniaturized telephone coupling
application
***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
Ordering Instructions:
No minimum.
Net 30 days F.O.B. Pelham, NY
Delivery stock to one week for
sample orders.
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.
143 Sparks Ave. Pelham, NY 108031810
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