™
DATA SHEET
SUBMINIATURE
PROPORTIONALLY CONTROLLED HEATER
GENERAL DESCRIPTION
DN515
HEATER BLOCK
DIAGRAM
1
CONTROL CIRCUIT
TEMP.
SENSOR
HEATER
+
FEATURES
•
•
•
•
BERYLLIA BASE FOR GOOD THERMAL CONDUCTION
REGULATION TEMPERATURE FROM 40˚C TO 100˚C
28 VOLT OPERATION
ELECTRICALLY ISOLATED FROM THE CASE
COM.
2
3
MAXIMUM RATINGS
Rating
Supply Voltage
Reverse Voltage
Power Dissipation
Operating Temperature
Storage Temperature
OPERATING CHARACTERISTICS
Characteristic
Supply Voltage (Pin 1 to Pin 2)
Steady State Supply Current
@ VDD = +28 V
DC
_
V
Temperature Variation over
Operating Voltage
Symbol
VDD
I
S
T
V
Min
+20
0.015
Max
+35
1.0
2
10
50
0
120
25
28
100
Unit
V
DC
I
DC
˚C
˚C
˚C
Ω
˚C
Watts
0.070
0.180
0.600
0.500
0.750
Symbol
VDD
VR
PD
Tmax
Tmin
Value
35
-50
35
120
-65 to +150
Unit
V
DC
V
DC
Watts
˚C
˚C
OUTLINE DIMENSIONS
PIN 1
4
Therm
Optics
DN515
XXXX
2
3
Temperature Variation with Load
Control Temperature Range
Control Resistor Value
Pin 3 to Pin 4 (See Figure 1)
Maximum Control Temperature
when R C = 0
Turn on power at start-up
@ VDD = + 28 Volts
TL
C
C
T
R
T max
PD
0.500
BERYLLIA BASE
TWO TIMES ACTUAL SIZE
™
Page1
Temp. set resistor
The DN515 is a subminiature proportionally controlled heater,
whose temperature can be programmed with a single external
resistor. This device is ideally suited for regulating the temperature
of sensitive electronic components such as fiber optic components and
crystal oscillators. The DN515 is in a ceramic package and can
supply up to 28 watts of power from an unregulated power supply.
V
DD
4
_
V
DN515
Heater Temperature vs
Temperature Set Resistor
T
°C
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
RS
KΩ
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
T
°C
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
RS
KΩ
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
T
°C
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
RS
KΩ
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
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
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
MAX. START UP CURRENT
VS.
SUPPLY VOLTAGE
SUPPLY CURRENT (AMPS)
1.6
1.2
0.8
0.4
0
0
MAX. THERMAL POWER AVAILABLE
VS.
SUPPLY VOLTAGE
OUTPUT POWER (WATTS)
40
30
20
10
0
FIG. 1
FIG. 2
10
20
30
SUPPLY VOLTAGE
(VOLTS D.C.)
40
0
10
20
30
SUPPLY VOLTAGE
(VOLTS D.C.)
40
TYPICAL BASE TEMPERATURE
CHANGE WITH
POWER DISSIPATION
0
-4
-8
-12
-16
MECHANICAL DIMENSIONS
PIN 1
0.094
o
C
TEMP. CHANGE
2
3
0.250
0.500
FIG. 3
Therm
Optics
DN515
XXXX
0.750
0.600
4
0.018 DIA. PIN
OFHC GRADE
COPPER
1/2 HARD .00003"
GOLD FLASH
0.400
0.200
0.310
0.070
0.180
0
10
20
30
40
POWER OUTPUT (WATTS)
0.500
#2-56 mounting
screws
MOUNTING THE DN-515 HEATER
Thermal compound
between surfaces
Do not over tighten the mountng screws.
This may result in breaking the ceramic
Device being heated
substrate.
NOTES:
1. Optimum heat transfer between the DN515 and the device being heated occurs when a thermal compound, such
as Dow Corning 340, is applied to the mounting surface of the heater.
2. The DN515 heaters are tested for gross leaks in Fluorocarbon at 125˚C.
3. Operation is possible from 100˚C to 120˚C, however electrical performance is not guaranteed. The input
decreases to less than 20 mA when the ambient temperature is 120˚C.
4. Special enviromental testing is available on request.
™
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
Page 2
ADI Reference Circuit
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