DN510
MAX. START UP CURRENT
VS.
SUPPLY VOLTAGE
400
300
200
100
0
0
20 30
SUPPLY VOLTAGE
(VOLTS D.C.)
0
4
8
SUPPLY VOLTAGE
(VOLTS D.C.)
40
50
0
20 30 40
50
12
16
0
-2
-4
- 6
- 8
TYPICAL BASE TEMPERATURE
CHANGE WITH
POWER DISSIPATION
ACTUAL SIZE
DN510
Operating temperature can be set at the
factory by soldering a chip resistor between
pins 3 and 4. Consult the the factory when
specific heater temperatures are required.
2.
1. The DN510 is normally supplied with leads.
However, the heater can be supplied without
them. The leaded device has #33 insulated
magnet wire attached to the solder pads as
shown in figure 4.
OPTIONS
3. The DN510 heater can
be attached to the device
to be heated by Ablefilm
561K thermally conductive
adhesive film. A 0.005" thick
0.480" x 0.275" piece
of this film is provided with
each DN510 heater.
INSTRUCTIONS FOR
APPLICATION OF THE FILM
1. Place precut adhesive film between
clean surfaces to be bonded.
2. Assemble components. Apply spring
loaded clamp or dead weight to
provide continuous pressure of at least
one psi during the cure cycle.
3. Place assembly in a preheated
oven and cure at one of the following
schedules:
1/2 hr @ 150˚C
2 hrs @ 125˚C
Clamp the device being
heated and the DN510
heater togeather with the
thermally conductive pre-
form in between.
APPLICATIONS
Applications for the DN510 are to regulate
the temperature of sensitive electronic components. One
such application is employing the DN510 as the
temperature controlling element in an oven controlled
crystal oscillator. This application is illustrated in figure 8.
When using the DN510, care should be taken to
thermally insulate the composite heater and the
electronics package being heated from the
surrounding environment. This will minimize the amount
of power required to heat the package which in turn will
reduce the temperature variation of the package over the
ambient temperature extremes .
FIG. 7
Device being heated
561K FILM
DN510 heater
OVEN CONTROLLED CRYSTAL OSCILLATOR
APPLICATION USING THE DN510 HEATER
10
10
FIG. 3
FIG. 1
FIG. 2
+Vcc
Rc
Rc
COM.
FIG. 4
3"
3"
A chip resistor is
used to set the
temperature of
the heater.
+Vcc
COM.
FIG. 5
INSULATING
SHELL
OSCILLATOR
DN510
HEATER
PRINTED CIRCUIT BOARD
Force
Force
FIG. 7
0
4
8
12
16
POWER OUTPUT (WATTS)
The base material of the DN510 is
Beryllia which provides efficient
energy transfer from the heating
element located inside the heater
and the heating surface of the
DN510. The temperature drop
across the Beryllia substrate, as a
function of power transfer, is shown
in figure 3.
The thermal interface between the
DN510 heater and the device
being heated causes a temperature
drop. Care should be taken to make
sure that a good thermal interface
exists between the two surfaces.
xxxx
DN510
Therm
Optics
xxxx
DN510
Therm
Optics
NOTES:
1. All DN510 heaters are tested for gross leaks in Fluorocabon at 125˚C.
2. Do not reverse the voltage polarity on the input power leads. This can cause
permanent damage to the device.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
360.1
340.6
322.3
305.0
288.7
273.4
259.0
245.4
232.5
220.4
209.0
198.3
188.1
178.5
169.4
160.8
152.7
145.1
137.8
131.0
124.5
118.3
112.5
107.0
101.8
96.9
92.2
87.8
83.6
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
79.6
75.8
72.2
68.8
65.5
62.5
59.5
56.8
54.1
51.6
49.2
46.9
44.8
42.7
40.7
38.9
37.1
35.4
33.8
32.3
30.8
29.4
28.1
26.8
25.5
24.4
23.2
22.2
21.2
20.2
19.3
18.4
17.5
16.7
15.9
15.2
14.5
13.8
13.2
12.5
11.9
11.4
10.8
10.3
9.8
9.3
8.9
8.4
8.0
7.6
7.2
6.8
6.5
6.1
5.8
5.5
5.2
4.9
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
4.6
4.4
4.1
3.9
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.68
1.52
1.37
1.23
1.09
0.95
0.82
0.70
0.58
0.46
0.35
0.25
0.14
0.04
RS
KΩ
T
°
C
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
RS
KΩ
T
°
C
RS
KΩ
T
°
C
RS
KΩ
T
°
C
Heater Temperature vs
Temperature Set Resistor
™
Page 2
Last Updated 6/25/01
1004 Mallory Way •Carson City, NV 89701 •Phone: 775-882-7721 • Fax: 775-882-7675 •E-mail: info@thermoptics.com • http://www.thermoptics.com
MAX. THERMAL POWER AVAILABLE
VS.
SUPPLY VOLTAGE
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