CDI-DIODE DCR252

• CURRENT REGULATOR DIODES
DCR250
• CONSTANT CURRENT OVER WIDE VOLTAGE RANGE
thru
• HIGH SOURCE IMPEDANCE
DCR257
• METALLURGICALLY BONDED
• DOUBLE PLUG CONSTRUCTION
MAXIMUM RATINGS
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
DC Power Dissipation: 500 mW @ +50°C @ TL = 3/8”
Power Derating: 4 mW / °C above +50°C
ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified
NOM
MIN
MAX
MINIMUM
DYNAMIC
IMPEDANCE
@VS = 25V
ZS (KΩ)
(Note 2)
DCR250
DCR251
DCR252
DCR253
5.10
5.60
6.20
6.80
4.59
5.04
5.58
6.12
5.61
6.16
6.82
7.48
100
90
80
70
4.0
4.0
3.0
2.0
3.67
4.03
4.46
4.90
80
80
70
70
DCR254
DCR255
DCR256
DCR257
7.50
8.20
9.10
10.00
6.75
7.38
8.19
9.00
8.25
9.02
10.01
11.10
50
30
20
10
1.5
1.5
1.0
1.0
5.40
5.90
6.55
7.20
60
60
50
50
TYPE
NUMBER
REGULATOR CURRENT
l p (mA) @ VS = 25V
(Note 1)
MINIMUM
KNEE
IMPEDANCE
@VK = 6.0 V
ZK(KΩ)
(Note 3)
MAXIMUM
LIMITING
VOLTAGE
@ lL = 0.8 l p (min)
VL (VOLTS)
PEAK
OPERATING
VOLTAGE
VOLTS
FIGURE 1
DESIGN DATA
CASE: Hermetically sealed glass case.
DO-7 outline.
LEAD MATERIAL: Copper clad steel.
LEAD FINISH: Tin / Lead
NOTE 1
Pulse measurement @ 1% duty cycle, 10 milliseconds maximum.
NOTE 2
ZS is derived by superimposing A 90Hz RMS signal equal to 10% of VS on VS
THERMAL RESISTANCE: (ROJEC):
250 ˚C/W maximum at L = .375 inch
NOTE 3
ZK is derived by superimposing A 90Hz RMS signal equal to 10% of VK on VK
THERMAL IMPEDANCE: (ZOJX): 25
˚C/W maximum
POLARITY: Diode to be operated with
the banded (cathode) end negative.
MOUNTING POSITION: Any
22 COREY STREET, MELROSE, MASSACHUSETTS 02176
PHONE (781) 665-1071
FAX (781) 665-7379
WEBSITE: http://www.cdi-diodes.com
E-mail: mail@cdi-diodes.com