Inductance
tested at 1 KHz, <10 gauss and 0 Adc
DC Resistance
at 25°C
Rated Idc
based on 40°C maximum rise from 25°C
ambient with 0 Arms
Windings
single layered to maximize operating
frequency and minimize board space
Self leads
solder coated to within .050" of seating plane
Other values
available on request
Packaging
Bulk only
Mounting
Standard mounting is self-lead radial per
Figure “1”. Optional mounting methods are self-leaded
horizontal per Figure “2” or vertical base mounted per
Figures “3” and “4”.
FIGURE
FIGURE
PA
RT
Power Toroids –
Horizontal or Vertical Mount
1
2
STANDARD
VERTICAL
FIGURE
FIGURE
HORIZONTAL
3
4
VERTICAL
2-LEAD
VERTICAL
4-LEAD
PT5-530
5
PT5-700
5
5
PT5-800
5
PT5-1000
10
PT10-530
10
PT10-680
10
PT10-820
10
PT10-990
25
PT25-680
25
PT25-800
25
PT25-900
25
PT25-1000
50
PT50-780
50
PT50-900
50
PT50-1020
50
PT50-1320
75
PT75-900
75
PT75-980
75
PT75-1260
75
PT75-1550
100
PT100-1000
100
PT100-1100
100
PT100-1260
100
PT100-1550
150
PT150-1040
150
PT150-1250
150
PT150-1500
150
PT150-2050
250
PT250-1200
250
PT250-1500
250
PT250-1800
300
PT300-1200
300
PT300-1500
300
PT300-1750
400
PT400-1200
400
PT400-1500
400
PT400-1750
500
PT500-1450
500
PT500-1750
500
PT500-2000
750
PT750-1400
750
PT750-1700
750
PT750-2050
PT1000-1400 1000
PT1000-1750 1000
PT1000-2050 1000
NU
MB
ER
PT Series
PT SERIES POWER TOROIDS
0.015
0.012
0.010
0.008
0.020
0.015
0.010
0.008
0.035
0.025
0.020
0.014
0.050
0.030
0.025
0.020
0.060
0.040
0.035
0.025
0.080
0.050
0.035
0.028
0.100
0.060
0.050
0.040
0.130
0.080
0.055
0.150
0.100
0.075
0.250
0.180
0.110
0.220
0.160
0.090
0.350
0.280
0.150
0.620
0.420
0.200
6.1
7.4
10.6
12.8
4.9
6.8
9.3
13.2
4.4
6.6
7.0
10.4
3.8
5.6
7.0
11.0
3.9
5.2
7.4
10.6
3.5
5.1
7.8
10.3
3.4
5.7
7.7
12.3
3.8
6.1
9.1
3.3
5.5
7.3
2.4
4.7
6.0
3.4
5.0
8.0
2.6
3.7
6.4
1.8
3.1
5.9
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
IN
D.
(µ
H)
±
15
DC
%
R
@
MA
1K
X.
Hz
RA
(O
TE
HM
D
S)
Id
c(
FI
G
Am
VE . “1
ps
RT ” S
)
IC TA
FI
G. AL ND
AR
HO “2
D
RI ”
ZO
FI
G. NTA
VE “3 L
RT ” 2
I
FI CAL -LEA
G.
D
VE “4
”
RT 4
IC -L
AL EA
D
2/ 2002
MOUNTING AVAILABLE
POWER INDUCTORS
Notes to Figure 5 (Page 95)
The PT Toroid Series inductance is specified at AC and DC signal levels which have no significant effect
on the permeability of the powdered iron toroidal core. Superimposed AC and DC voltages will change the permeability and therefore
the inductance, under operating conditions. Typically, DC currents will reduce the inductance, while AC signals will increase the
inductance up to a point, before beginning to decrease. Supporting information is provided, detailing the AC or DC effects upon each
part. Saturation resulting from DC currents is specified with waveform having less than a 1% ripple content. When considering the AC
waveform, both the frequency and voltage level must be taken into account. As an aid in defining what effect the alternating sine wave
signal will have, the voltage/frequency factor curve can be used. To determine what change of inductance can be expected at a given
voltage level and frequency, simply divide the sinusoidal RMS voltage by the frequency. The voltage is in volts and the frequency is in
hertz. As an example, if using part number PT25-680 at a 1VRMS signal level, and a frequency of 25KHz, the voltage/frequency factor
is calculated to be: 1VRMS/25,000Hz = 40 x 10–6. Referring to the graph, a 39% increase in inductance would be expected.
Notes to Figure 6 (Page 95)
Typical saturation effects as a function of DC flowing through the part. Data is representative of a DC
waveform with less than 1% ripple, and an AC waveform less than 10 gauss.
Note
This information is intended to be used in assisting the designer in part selection. Each operating application may contain other
variables which must be considered in part selection; such as temperature effects, waveform distortion, etc.... Delevan Sales/Engin-
eering staff is available to provide information as needed to fit each application.
www
.
delevan
.
com
E-mail: apisales@delevan.com
270 Quaker Rd., East Aurora NY 14052 • Phone 716-652-3600 • Fax 716-652-4814
PAGE
92
Power Toroids –
Horizontal or Vertical Mount
100
90
80
70
60
50
40
30
20
PT Series
PT SERIES, FIGURE 5
See Notes, Page 84
1
5
10
15
20
25
30
40
45
INDUCTANCE INCREASE %
POWER INDUCTORS
10
0.1
1
10
100
1000
10000
VOLTAGE/FREQUENCY FACTOR (X 10–6)
KEY TO FIGURE 5 CURVE NUMBERS
Graphs apply to all mounting styles. For more detailed graphs, contact factory.
1) PT5-530
2) PT10-530
3) PT5-700
4) PT5-800
5) PT10-680
6) PT5-1000
7) PT10-820
8) PT10-990
9) PT25-680
10) PT25-800
11) PT25-900
12) PT25-1000
13) PT50-780
14) PT50-900
15) PT75-900
16) PT75-980
17) PT50-1020
18) PT100-1000
19) PT100-1100
20) PT50-1320
21) PT150-1040
22) PT75-1260
23) PT100-1260
24) PT75-1550
25) PT100-1550
26) PT150-1250
27) PT150-1500
28) PT250-1200
29) PT300-1200
30) PT250-1500
31) PT400-1200
32) PT300-1500
33) PT400-1500
34) PT250-1800
35) PT150-2050
36) PT300-1750
37) PT500-1450
38) PT400-1750
39) PT750-1400
40) PT500-1750
41) PT1000-1400
42) PT750-1750
43) PT500-2000
44) PT1000-1750
45) PT750-2050
46) PT1000-2050
50
PT SERIES, FIGURE 6
See Notes, Page 84
40
30
20
INDUCTANCE DECREASE %
PT300-1200
PT100-1000
PT1000-1750
PT750-1400
PT400-1200
PT1000-1400
PT50-780
PT500-1450
PT150-1040
PT75-900
PT10-530
PT750-1750
10
PT50-900
PT100-1100
PT400-1500
PT25-680
PT250-1200
PT75-980
PT250-1500
PT150-1250
PT400-1750
PT300-1500
PT1000-2050
PT500-1750
0
PT500-2000
PT250-1800
PT25-900
PT100-1260
PT50-1320
PT10-820
PT100-1550
PT5-700
PT75-1260
PT5-1000
PT5-800
PT150-2050
PT10-990
PT75-1550
40
30
20
10
PT50-1020
PT300-1750
PT10-680
PT25-800
PT5-530
PT750-2050
PT25-1000
PT150-1500
0
0
2
4
6
8
10 12
0
2
4
6
8
10 12
0
2
4
6
8
10 12
0
2
4
6
8
10 12
For more detailed graphs, contact factory
DC CURRENT IN AMPS
www
.
delevan
.
com
E-mail: apisales@delevan.com
270 Quaker Rd., East Aurora NY 14052 • Phone 716-652-3600 • Fax 716-652-4814
2/ 2002
PAGE
95
Embedded System
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