PDF version

 

Ultra Miniature Transformers

R Series Thru Hole

 

 

Specifications:
  • MIL-PRF-27: All units manufactured to MIL-PRF-27, 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 MIL-STD-202 Method 208.
  • THERMAL SHOCK: 25 Cycles, Method 107, MIL-STD-202, 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
Pico
Part
Number
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
300 Hz
and
higher
75 Hz
and
higher
Ser
Conn
Par
Conn
Sec
Ser
Conn
Sec
Par
Conn
R-20003
R-20005
R-20010
R-20015
R-20018
20ct
20ct
32ct
40ct
48ct
8ct
20ct
32ct
40ct
16ct
2
5
8
10
4
1.5
1.5
1.5
1.5
1.5
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
22
22
17.5
16
14.5
1.6
1.6
2.56
3.2
3.84
.76
1.9
3
3.8
1.52
.19
.48
.75
.95
.38
1.58:1
1:1
1:1
1:1
1.73:1
3.16:1
2:1
2:1
2:1
3.46:1
102.06
102.06
102.06
102.06
102.06
R-20020
R-20025
R-20028
R-20030
R-20035
50ct
80ct
100ct
100ct
120ct
50ct
32ct
40ct
100ct
12.8ct
12.5
8
10
25
3.2
1.5
1.5
1.5
1.5
1.5
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
14
11
10
10
9
4
6.4
8
8
9.6
4.75
3
3.8
9.5
1.22
1.19
.75
.95
2.38
.3
1:1
1.58:1
1.58:1
1:1
3.06:1
2:1
3.16:1
3.16:1
2:1
6.12:1
102.06
102.06
102.06
102.06
102.06

 

 

 

Ultra Miniature Transformers:
R Series
Pico
Part
Number
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
300 Hz
and
higher
75 Hz
and
higher
Ser
Conn
Par
Conn
Sec
Ser
Conn
Sec
Par
Conn
R-20040
R-20045
R-20050
R-20055
R-20060
120ct
120ct
150ct
150ct
150ct
60ct
120ct
12ct
50ct
100ct
15
30
3
12.5
25
1.5
1.5
1.5
1.5
1.5
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
9
9
8
8
8
9.6
9.6
12
12
12
5.7
11.4
1.14
4.75
9.5
1.4
2.85
.29
1.19
2.38
1.14:1
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
102.06
102.06
102.06
102.06
102.06
R-20065
R-20070
R-20075
R-20080
R-20085
150ct
150ct
200ct
300ct
300ct
150ct
600ct
200ct
12ct
50ct
37.5
150
50
3
12.5
1.5
1.5
1.5
1.5
1.5
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
8
8
7
5.5
5.5
12
12
16
24
24
14.3
57
19
1.14
4.75
3.56
14.3
4.75
.29
1.19
1:1
1:2
1:1
5:1
2.45:1
2:1
1:1
2:1
10:1
4.9:1
102.06
102.06
102.06
102.06
102.06
R-20090
R-20095
R-20100
R-20105
R-20110
300ct
300ct
300ct
320ct
400ct
150ct
300ct
600ct
12.8ct
40ct
37.5
75
150
3.2
10
1.5
1.5
1.5
1.5
1.5
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
5.5
5.5
5.5
5.5
5
24
24
24
25.6
32
14.25
28.5
57
1.22
3.8
3.56
7.13
14.25
.3
.95
1.41:1
1:1
1:1.41
5:1
3.16:1
2.83:1
2:1
1.41:1
10:1
6.32:1
102.06
102.06
102.06
102.06
102.06
R-20115
R-20120
R-20125
R-20130
R-20135
400ct
400ct
400ct
400ct
400ct
120ct
200ct
400ct
1000ct
2000ct
30
50
100
250
500
1.5
1.5
1.5
1.5
1.5
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
5
5
5
5
5
32
32
32
32
32
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
102.06
102.06
102.06
102.06
102.06
R-20140
R-20142
R-20144
R-20145
R-20147
400ct
500ct
500ct
500ct
500ct
4000ct
12.8ct
16ct
50ct
150ct
1000
3.2
4
12.5
37.5
1.5
1.5
1.5
1.5
1.5
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
5
4.5
4.5
4.5
4.5
32
40
40
40
40
380
1.22
1.52
4.75
14.25
95
.3
.38
1.19
3.56
1:3.16
6.25:1
5.6:1
3.16:1
1.83:1
1:1.58
12.5:1
11.2:1
6.32:1
3.65:1
102.06
102.06
102.06
102.06
102.06
R-20150
R-20155
R-20160
R-20165
R-20167
500ct
*500ct
500ct
600ct
600ct
500ct
500ct
600ct
12.8ct
30ct
125
-
150
3.2
7.5
1.5
1.5
1.5
1.5
1.5
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
4.5
4.5
4.5
4
4
40
40
40
48
48
47.5
47.5
57
1.22
2.85
11.88
-
14.25
.3
.71
1:1
1:1
1:1.1
6.85:1
4.47:1
2:1
-
1.83:1
13.7:1
8.94:1
102.06
108.56
102.06
102.06
102.06
R-20170
R-20175
R-20180**
R-20185**
R-20186**
600ct
600ct
600ct
*600ct
*600ct
48ct
200ct
600ct
600ct
900ct
12
50
150
-
-
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
19
57
57
85.5
1.14
4.75
14.25
-
-
3.54:1
1.73:1
1:1
1:1
1:1.22
7.07:1
3.46:1
2:1
-
-
102.06
102.06
102.06
108.56
108.56
R-20187**
R-20190
R-20195
R-20200
R-20205
600ct
640ct
700ct
800ct
800ct
1200ct
12.8ct
100ct
12.8ct
48ct
300
3.2
25
3.2
12
1.5
1.5
1.5
1.5
1.5
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
4
4
3.5
3.5
3.5
48
51.2
56
64
64
114
1.22
9.5
1.22
4.56
28.5
.3
2.38
.3
1.14
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
102.06
102.06
102.06
102.06
102.06
R-20210
R-20215
R-20217**
R-20220
R-20225
800ct
900ct
*900ct
1000ct
1000ct
800ct
600ct
900ct
12ct
50ct
200
150
-
3
12.5
1.5
1.5
1.5
1.5
1.5
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
3.5
3
3
3
3
64
72
72
80
80
76
57
85.5
1.14
4.75
19
14.3
-
.29
1.19
1:1
1.23:1
1:1
9.13:1
4.47:1
2:1
2.45:1
-
18.26:1
8.94:1
102.06
102.06
108.56
102.06
102.06
R-20230
R-20235
R-20240
R-20245
R-20250
1000ct
1060ct
1200ct
1200ct
1200ct
1000ct
12.8ct
12.8ct
500ct
1200ct
250
3.2
3.2
125
300
1.5
1.5
1.5
1.5
1.5
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
3
3
3
3
3
80
85
96
96
96
95
1.22
1.22
47.5
114
23.8
.3
.3
11.88
28.5
1:1
9.1:1
9.68:1
1.55:1
1:1
2:1
18.2:1
19.4:1
3.1:1
2:1
102.06
102.06
102.06
102.06
102.06

 

 

Ultra Miniature Transformers:
R Series
Pico
Part
Number
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
300 Hz
and
higher
75 Hz
and
higher
Ser
Conn
Par
Conn
Sec
Ser
Conn
Sec
Par
Conn
R-20255
R-20260
R-20265
R-20270
R-20275
*1200ct
1500ct
1500ct
*1500ct
*1500ct
1200ct
12ct
500ct
600ct
1500ct
-
3
125
-
-
1.5
1.5
1.5
1.5
1.5
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
3
2.5
2.5
2.5
2.5
96
120
120
120
120
114
1.14
47.5
57
142
-
.29
11.88
-
-
1:1
11.18:1
1.73:1
1.58:1
1:1
-
22.36:1
3.46:1
-
-
108.56
102.06
102.06
108.56
108.56
R-20280
R-20283
R-20285
R-20290
R-20295
1600ct
2000ct
2000ct
*2000ct
2000ct
12.8ct
8ct
2000ct
2000ct
8000ct
3.2
2
500
-
2000
1.5
1.5
1.5
1.5
1.5
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
2.5
2.2
2.2
2.2
2.2
128
160
160
160
160
1.22
.76
190
190
760
3
.19
47.5
-
190
11.18:1
15.8:1
1:1
1:1
1:2
22.36:1
31.6:1
2:1
-
1:1
102.06
102.06
102.06
108.56
102.06
R-20297
R-20300
R-20305
2500ct
3000ct
*3000ct
2500ct
3000ct
3000ct
625
750
-
1.5
1.5
1.5
.9
.9
.9
.03
.03
.03
2
1.8
1.8
200
240
240
238
285
285
59.5
71.3
-
1:1
1:1
1:1
2:1
2:1
-
102.06
102.06
108.56
R-20310
R-20312
R-20314**
R-20315
R-20320
3600ct
4000ct
4000ct
4000ct
*4000ct
3600ct
16ct
600ct
1000ct
8000ct
900
4
150
250
-
1.5
1.5
1.5
1.5
1.5
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
1.7
1.6
1.6
1.6
1.6
288
320
320
320
320
342
1.52
57
95
760
86
.38
14.3
23.8
-
1:1
15.8:1
2.58:1
2:1
1:1.41
2:1
31.6:1
5.16:1
4:1
-
102.06
102.06
102.06
102.06
108.56
R-20325
R-20330
R-20335
R-20340
R-20345
5000ct
5000ct
7500ct
7500ct
7500ct
500ct
5000ct
50ct
100ct
600ct
125
1250
12.5
25
150
1.5
1.5
1.3
1.3
1.3
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
1.4
1.4
1.2
1.2
1.2
400
400
600
600
600
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
102.06
102.06
116.11
116.11
116.11
R-20350
R-20355
R-20360
R-20365
R-20370
7500ct
*7500ct
8000ct
8000ct
*8000ct
2500ct
7500ct
12.8ct
1000ct
1200ct
625
-
3.2
250
-
1.3
1.3
1.2
1.2
1.2
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
1.2
1.2
1.1
1.1
1.1
600
600
640
640
640
238
713
1.22
95
114
59.5
-
.3
23.8
-
1.73:1
1:1
25:1
2.83:1
2.58:1
3.46:1
-
50:1
5.66:1
-
116.11
123.61
116.11
116.11
123.61
R-20375
R-20380
R-20385
R-20390
R-20395
*9000ct
10,000ct
10,000ct
10,000ct
10,000ct
9000ct
12.8ct
16ct
100ct
200ct
-
3.2
4
25
50
1.1
1.0
1.0
1.0
1.0
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
1.1
1
1
1
1
720
800
800
800
800
855
1.22
1.52
9.5
19
-
.3
.38
2.38
4.75
1:1
28:1
25:1
10:1
7.07:1
-
56:1
50:1
20:1
14.14:1
123.61
116.11
116.11
116.11
116.11
R-20400
R-20405
R-20410
R-20415
R-20420
10,000ct
10,000ct
10,000ct
10,000ct
10,000ct
500ct
600ct
1000ct
1200ct
1500ct
125
150
250
300
375
1.0
1.0
1.0
1.0
1.0
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
1
1
1
1
1
800
800
800
800
800
47.5
57
95
114
143
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
116.11
116.11
116.11
116.11
116.11
R-20425
R-20430
R-20435
R-20440
R-20445
10,000ct
10,000ct
10,000ct
10,000ct
*10,000ct
2000ct
5000ct
7500ct
10,000ct
10,000ct
500
1250
1875
2500
-
1.0
1.0
1.0
1.0
1.0
.9
.9
.9
.9
.9
.03
.03
.03
.03
.03
1
1
1
1
1
800
800
800
800
800
190
475
713
950
950
47.5
119
178
238
-
2.24:1
1.41:1
1.16:1
1:1
1:1
4.47:1
2.83:1
2.31:1
2:1
-
116.11
116.11
116.11
116.11
123.87
R-20450
R-20452
R-20455
R-20460
R-20465
15,000ct
15,000ct
15,000ct
15,000ct
*15,000ct
400ct
500ct
600ct
10,000ct
15,000ct
100
125
150
2500
-
.66
.66
.66
.66
.66
.66
.66
.66
.66
.66
.03
.03
.03
.03
.03
.8
.8
.8
.8
.8
1200
1200
1200
1200
1200
38
48
57
950
1430
9.5
12
14.3
238
-
6.12:1
5.48:1
5:1
1.22:1
1:1
12.25:1
10.95:1
10:1
2.45:1
-
116.11
116.11
116.11
116.11
123.87

 

 

Ultra Miniature Transformers:
R Series
Pico
Part
Number
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
300 Hz
and
higher
75 Hz
and
higher
Ser
Conn
Par
Conn
Sec
Ser
Conn
Sec
Par
Conn
R-20470
R-20475
R-20480
R-20485
R-20490
15,000ct
16,000ct
20,000ct
20,000ct
20,000ct
15,000ct
1000ct
500ct
600ct
800ct
3750
250
125
150
200
.66
.62
.5
.5
.5
.66
.62
.5
.5
.5
.03
.03
.03
.03
.03
.8
.8
.7
.7
.7
1200
1280
1600
1600
1600
1430
95
47.5
57
76
357
23.8
11.88
14.25
19
1:1
4:1
6.32:1
5.77:1
5:1
2:1
8:1
12.65:1
11.55:1
10:1
116.11
116.11
123.80
123.80
123.80
R-20495
R-20500
R-20505
R-20510
R-20515
20,000ct
20,000ct
20,000ct
*20,000ct
25,000ct
1000ct
5000ct
10,000ct
20,000ct
500ct
250
1250
2500
-
125
.5
.5
.5
.5
.4
.5
.5
.5
.5
.4
.03
.03
.03
.03
.03
.7
.7
.7
.7
.6
1600
1600
1600
1600
2000
95
475
950
1900
47.5
23.8
119
238
-
11.88
4.47:1
2:1
1.41:1
1:1
7.07:1
8.94:1
4:1
2.83:1
-
14.14:1
123.80
123.80
123.80
128.70
123.80
R-20520
R-20525
R-20530
R-20532
R-20534
25,000ct
30,000ct
30,000ct
30,000ct
30,000ct
1000ct
50ct
1200ct
500ct
200ct
250
12.5
300
125
50
.4
.33
.33
.33
.33
.4
.33
.33
.33
.33
.03
.03
.03
.03
.03
.6
.6
.6
.6
.6
2000
2400
2400
2400
2400
95
4.75
114
47.5
19
23.8
1.19
28.5
11.88
4.75
5:1
24.5:1
5:1
7.7:1
12.2:1
10:1
49:1
10:1
15.5:1
24.5:1
123.80
128.70
128.70
128.70
128.70
R-20535
R-20540
R-20545
R-20550
R-20555
30,000ct
30,000ct
*30,000ct
40,000ct
40,000ct
5000ct
10,000ct
30,000ct
400ct
2000ct
1250
2500
-
100
500
.33
.33
.33
.25
.25
.33
.33
.33
.25
.25
.03
.03
.03
.03
.03
.6
.6
.6
.5
.5
2400
2400
2400
3200
3200
475
950
2850
38
190
119
238
-
9.5
47.5
2.45:1
1.73:1
1:1
10:1
4.47:1
4.9:1
3.46:1
-
20:1
8.94:1
128.70
128.70
138.65
138.65
138.65
R-20560
R-20565
R-20570
R-20575
R-20577
40,000ct
40,000ct
*40,000ct
50,000ct
50,000ct
4000ct
20,000ct
40,000ct
200ct
500ct
1000
5000
-
50
125
.25
.25
.25
.2
.2
.25
.25
.25
.2
.2
.03
.03
.03
.03
.03
.5
.5
.5
.4
.4
3200
3200
3200
4000
4000
380
1900
3800
19
47.5
95
475
-
4.75
11.88
3.16:1
1.41:1
1:1
15.8:1
10:1
6.32:1
2.83:1
-
31.6:1
20:1
138.65
138.65
153.93
153.93
153.93
R-20578
R-20579
R-20580
R-20585
R-20587
50,000ct
50,000ct
60,000ct
62,500ct
80,000ct
600ct
50,000ct
15,000ct
50ct
15,000ct
150
12,500
3750
12.5
3750
.2
.2
.16
.16
.12
.2
.2
.16
.16
.12
.03
.03
.03
.03
.03
.4
.4
.4
.4
.3
4000
4000
4800
5000
6400
57
4750
1430
4.75
1430
14.3
1190
358
1.19
358
9.13:1
1:1
2:1
35.4:1
2.3:1
18.26:1
2:1
4:1
70.7:1
4.6:1
153.93
153.93
166.26
166.26
166.26
R-20590
R-20595
R-20600
R-20605
R-20610
90,000ct
95,000ct
100,000ct
100,000ct
100,000ct
10,000ct
15,000ct
60ct
100ct
500ct
2500
3750
15
25
125
.11
.1
.1
.1
.1
.11
.1
.1
.1
.1
.03
.03
.03
.03
.03
.3
.3
.3
.3
.3
7200
7600
8000
8000
8000
950
1430
5.7
9.5
47.5
238
358
1.43
2.38
11.88
3:1
2.5:1
40.8:1
31.6:1
14.1:1
6:1
5:1
81.6:1
63.2:1
28.3:1
166.26
174.52
174.52
174.52
174.52
R-20613
R-20614
R-20615
R-20620
100,000ct
100,000ct
100,000ct
135,000ct
1000ct
2000ct
10,000ct
82ct
250
500
2500
20.5
.1
.1
.1
.07
.1
.1
.1
.07
.03
.03
.03
.03
.3
.3
.3
.2
8000
8000
8000
10,800
95
190
950
7.8
23.8
47.5
238
1.9
10:1
7.07:1
3.16:1
40.6:1
20:1
14.14:1
6.32:1
81.2:1
174.52
174.52
174.52
182.33
*Includes electrostatic shield
**Miniaturized telephone coupling application
   
***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.

 

 

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
  • 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: 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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