™
DATA SHEET
SUBMINIATURE PROPORTIONALLY CONTROLLED HEATER
The DN511 is a subminiature proportionally controlled heater,
whose temperature can be programmed with a single external resistor.
A unique design allows this device to operate over a large voltage range
from 15volts to +60 Volts D.C. without drawing excessive current at
turn-on.Temperature of the DN511 can be set at the factory upon request.
The DN511 is in a ceramic package and can supply up to 3.5 watts of
power from an unregulated power supply.
FEATURES
• BERYLLIA BASE FOR GOOD THERMAL CONDUCTION
• REGULATION TEMPERATURE FROM 5°C ABOVE AMBIENT TO 100°C
• 15 TO 70 VOLT OPERATION
• ELECTRICALLY ISOLATED FROM THE CASE
MAXIMUM RATINGS
Rating
Supply Voltage
Power Dissipation
Operating Temperature
Storage Temperature
OPERATING CHARACTERISTICS
Characteristic
Supply Voltage (Pin 1 to Pin 2)
Supply Current at Turn on vs.
Power Supply Voltage
Supply Current at Turn-on
V
DD
= +30 Volts
Temperature Variation over
Operating Voltage
Temperature Variation with Load
Control Resistor Value
Pin 3 to Pin 4 (See Table 1)
Control Temperature Range
See Table 1
Turn on power at start-up
Symbol
V
DD
I
ON
I
ON
T
V
T
L
R
C
T
C
P
ON
0
Ambient
120
Min
+15
Max
+60
Unit
V
DC
mA
DC
mA
DC
°C
Symbol
V
DD
P
D
T
MAX
T
MIN
Value
70
4
120
-65 to +150
Unit
V
DC
Watts
°C
°C
PIN
1
2
GENERAL DESCRIPTION
V
DD
1
DN511
HEATER BLOCK
DIAGRAM
4
CONTROL CIRCUIT
TEMP.
SENSOR
R
C
TEMP. SET
+
COM.
HEATER
2
3
OUTLINE DIMENSIONS
Heater
surface
0.025"
0.110"
0.340"
0.480"
Therm
Optics
DN511
4
0.275"
xxxx
3
See Figure 2
90
110
2
3
The DN511 electrical
output pads are Pd-Pt-Ag
and can be soldered. The
solder used, such as SN-62,
should contain silver to
prevent leaching of the pads
from the substrate.
0.010"
0.060"
°C
Ω
°C
Watts
0.010"
Pad size
is 0.060" x
0.107"
(four places)
0.107"
0.041"
0.107"
See Figure 3
™
Page 1
DN511
TYPICAL CASE TEMPERATURE
VS
CONTROL RESISTOR
RS
KΩ
T
°C
TOL.
±°C
RS
KΩ
T
°C
TOL.
±°C
RS
KΩ
T
°C
TOL.
±°C
RS
KΩ
T
°C
TOL.
±°C
TYPICAL HEATER POWER AT TURN ON
vs.
POWER SUPPLY VOLTAGE
4.00
3.50
POWER (WATTS) AT TURN ON
3.00
2.50
2.00
1.50
1.00
0.50
0.00
0.0
20.0
40.0
60.0
80.0
SUPPLY VOLTAGE (VOLTS)
MAXIMUM HEATER TURN ON CURRENT
vs.
POWER SUPPLY VOLTAGE
140
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
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
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
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
33.8
30.8
29.4
28.1
26.8
25.5
24.4
23.2
22.2
21.2
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
47
49
50
51
52
53
54
55
56
57
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
3.0
3.0
3.0
3.0
3.5
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
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
3.0
3.0
3.0
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5.
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
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
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
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
The temperature of the DN511 is supplied with
four 3 inch #32 gage magnet wire as shown
below. Temperature of the DN511 can be set at
the factory on request
PIN 1
TYPICAL HEATER
3.0"
±
0.25"
120
Therm
Optics
DN511
MAXIMUM HEATER
CURRENT (mA)
xxxx
100
80
#32 GAGE MAGNET
WIRE (4 PLACES)
0805 1% TEMPERATURE
SET RESISTOR ON
REQUEST
60
It is recommended that the DN511 heater be
attached to the device being heated with a
thermally conductive adhesive such as Loctite®
384. This will insure that there is minimum
thermal resistance between the two surfaces.
40
This graph shows the range of D.C.
current that flows through the heater
before temperature control occurs.
0
10
20
30
40
50
60
70
20
POWER SUPPLY
VOLTAGE (VOLTS D.C.)
™
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
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