70021 ACME ELECTRIC, 70021 Datasheet - Page 16

• Manufacturer Part Number: 70021
• Description: Toroidal Transformer
• Manufacturer: ACME ELECTRIC

Specifications of 70021

• Power Rating: 5VA
• Secondary Voltages: 2 X 9V
• Secondary Current Nom: 2mA
• Transformer Mounting: PC Board
• Weight: 144g
• Transformer Type: Toroidal
• Secondary Current Aac: 278mA
• Output Current, Secondary Series: 278mA
• Frequency: 60Hz
• Output Current: 278mA
• Rohs Compliant: Yes
• Primary Voltages: 2 X 115V
• Mounting Type: PC Board
• Features: Low Profile
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The attractive 70000-series PC Mount toroidal step-down transformers offer
the design engineer the same features as our non-encapsulated toroidal power
transformers, namely, very low EMR (magnetic strayfields), quiet operation, low
temperature rise, low profile, low no-load current and very low no-load losses.
• Primary voltage of 115V or 230V at 50 / 60Hz
• Safety standard certifications UL 506, UL 1950 (UL File #E145880),
Power
10.0
15.0
25.0
35.0
50.0
VA
1.6
3.2
5.0
7.0
EN 60950, EN61558
Dimensions in mm. Electrical measurements at 20°C ambient temperature.
Number
70000
70001
70002
70003
70004
70005
70010
70011
70012
70013
70014
70015
70020
70021
70022
70023
70024
70025
70030
70031
70032
70033
70034
70035
70040
70041
70042
70043
70044
70045
70050
70051
70052
70053
70054
70055
70060
70061
70062
70063
70064
70065
70070
70071
70072
70073
70074
70075
70080
70081
70082
70083
70084
70085
Part
Sec-Full
Load V
2x12
2x15
2x18
2x22
2x12
2x15
2x18
2x22
2x12
2x15
2x18
2x22
2x12
2x15
2x18
2x22
2x12
2x15
2x18
2x22
2x12
2x15
2x18
2x22
2x12
2x15
2x18
2x22
2x12
2x15
2x18
2x22
2x12
2x15
2x18
2x22
2x7
2x9
2x7
2x9
2x7
2x9
2x7
2x9
2x7
2x9
2x7
2x9
2x7
2x9
2x7
2x9
2x7
2x9
All data subject to change without prior notice.
Current
1071
1785
1377
1041
2500
1944
1458
1167
3571
2777
2083
1666
1388
1136
mA
114
229
178
133
107
357
278
208
167
139
114
500
389
292
233
194
159
714
556
417
333
278
227
833
625
500
417
341
832
694
568
972
795
89
67
53
44
36
89
73
STANDARD FEATURES
LOW PROFILE PC MOUNT TRANSFORMERS
No Load
Voltage
12x10.8
2x11.6
2x15.4
2x19.3
2x23.4
2x28.2
2x10.2
2x13.0
2x17.3
2x21.4
2x25.7
2x31.3
2x12.4
2x17.0
2x21.3
2x25.5
2x30.5
2x12.2
2x16.2
2x20.3
2x24.3
2x29.7
2x14.4
2x18.0
2x21.7
2x26.3
2x11.1
2x14.8
2x18.5
2x22.2
2x27.2
2x10.7
2x14.3
2x17.8
2x21.4
2x26.2
2x10.6
2x14.0
2x17.6
2x20.9
2x25.7
2x10.4
2x13.9
2x17.3
2x20.8
2x25.4
2x8.9
2x9.7
2x9.5
2x8.3
2x8.9
2x8.3
2x8.0
2x8.1
Load
(mA)
(mA)
(mA)
(mA)
(mA)
(mA)
(mA)
(mA)
(mA)
No-
1.0
1.5
2.0
3.0
3.0
4.0
5.0
7.0
8.0
I
Reg.
17.7
15.5
%
29
43
40
34
20
23
19
`
Δt
°C
10
20
29
25
24
27
28
31
30
Eff
77
70
68
74
82
80
83
81
86
%
[phone]
110 grams
144 grams
174 grams
252 grams
304 grams
435 grams
525 grams
685 grams
82 grams
LxWxH
Dim.
39.6
39.6
18.5
44.7
44.7
19.5
49.7
49.7
19.5
49.7
49.7
23.1
55.0
55.0
26.0
60.0
60.0
26.3
60.0
60.0
37.5
72.0
72.0
37.5
82.4
82.4
37.5
mm
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
35.56
40.64
45.72
45.72
50.80
55.88
55.88
66.04
76.20
mm
XY
Pin Layout
www.amveco.com
Pin Size
1.0x0.5
1.0x0.5
1.0x0.5
1.0x0.5
1.0x0.5
1.0x0.5
1.0x0.5
1.0x1.0
1.0x1.0
mm
• UL File #122978 recognized for insulation Class A (105˚C)
• UL and VDE certifications to +40°C (1.6VA-25VA)
• Hipot testing at 4000V between primary and secondary (VDE0550)
• Maximum ambient temperature of +60°C for 1.6VA- 25VA,
With minimum order of 1000 pieces custom specified primary and
secondary voltages are available.
Please contact the Houston factory or your local Amveco sales
representative for details.
NOTES
• For 230 volt operation, connect primaries in series by connecting pins 5 &
• For 115 volt operation, connect primaries in parallel by connecting pins 6 &
• To parallel the secondaries, connect pins 14 to 12 and 13 to 11; take the
• To place the secondaries in series, connect pins 13 to 12 and take the
Power
Meets all requirements of Class E (125˚C)
+40°C for 35VA and 50VA models
4 together and apply 230 volts across pins 6 & 3.
4 together and pins 5 & 3 together; apply 115 volts across pins 6 & 5.
output across pins 14 and 13.
output across pins 14 and 11.
10.0
15.0
25.0
35.0
50.0
1.6
3.2
5.0
7.0
WIRE DIAGRAM AND TERMINAL PIN LAYOUT
39.6
44.7
49.7
49.7
55.0
60.0
60.0
72.0
82.4
L
39.6
44.7
49.7
49.7
55.0
60.0
60.0
72.0
82.4
CUSTOM DESIGN OPTIONS
W
Dimensions in mm.
18.5
19.5
19.5
23.1
26.0
26.3
37.5
37.5
37.5
H
35.56
40.64
45.72
45.72
50.80
55.88
55.88
66.04
76.20
X
35.56
40.64
45.72
45.72
50.80
55.88
55.88
66.04
76.20
Y
Weight
110 gr.
144 gr.
174 gr.
252 gr.
304 gr.
435 gr.
525 gr.
685 gr.
82 gr.
1.0x0.5
1.0x0.5
1.0x0.5
1.0x0.5
1.0x0.5
1.0x0.5
1.0x0.5
1.0x1.0
1.0x1.0
Pin
14