22 COREY STREET, MELROSE, MASSACHUSETTS 02176
PHONE (781) 665-1071
WEBSITE: http://www.cdi-diodes.com
FAX (781) 665-7379
E-mail: mail@cdi-diodes.com
ELECTRICAL CHARACTERISTICS
@ 25°C, unless otherwise specified
MINIMUM
DYNAMIC
IMPEDANCE
@VS= 25V
ZS(K
)
(Note 2)
100
90
80
70
50
30
20
10
MINIMUM
KNEE
IMPEDANCE
@VK= 6.0 V
ZK(K
)
(Note 3)
4.0
4.0
3.0
2.0
1.5
1.5
1.0
1.0
MAXIMUM
LIMITING
VOLTAGE
@ lL= 0.8 l p (min)
VL(VOLTS)
3.67
4.03
4.46
4.90
5.40
5.90
6.55
7.20
TYPE
NUMBER l p (mA) @ VS= 25V
REGULATOR CURRENT
PEAK
OPERATING
VOLTAGE
VOLTS
80
80
70
70
60
60
50
50
(Note 1)
MIN
4.59
5.04
5.58
6.12
6.75
7.38
8.19
9.00
NOM
5.10
5.60
6.20
6.80
7.50
8.20
9.10
10.00
MAX
5.61
6.16
6.82
7.48
8.25
9.02
10.01
11.10
CDLL250
CDLL251
CDLL252
CDLL253
CDLL254
CDLL255
CDLL256
CDLL257
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 VSon VS
NOTE 3
ZKis derived by superimposing A 90Hz RMS signal equal to 10% of VKon VK
MAXIMUM RATINGS
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
DC Power Dissipation: 500 mW @ +50°C
Power Derating: 4 mW / °C above +50°C
CURRENT REGULATOR DIODES
LEADLESS PACKAGE FOR SURFACE MOUNT
CONSTANT CURRENT OVER WIDE VOLTAGE RANGE
HIGH SOURCE IMPEDANCE
METALLURGICALLY BONDED
FIGURE 1
DESIGN DATA
CASE:
DO-213AB
,
Hermetically sealed
glass case. (MELF, LL41)
LEAD FINISH:
Tin / Lead
THERMAL RESISTANCE: (
ROJEC):
100 C/W maximum at L = 0 inch
THERMAL IMPEDANCE: (
ZOJX): 25
C/W maximum
POLARITY:
Diode to be operated with
the band (cathode) end negative.
MOUNTING SURFACE SELECTION:
The Axial Coefficient of Expansion
(COE) Of this Device is Approximately
+6PPM/°C. The COE of the Mounting
Surface System Should Be Selected To
Provide A Suitable Match With This
Device.
CDLL250
thru
CDLL257
MILLIMETERS INCHES
MIN
MAX
2.39
2.66
0.41
0.55
4.80
5.20
4.11 REF.
0.03 MIN.
DIM
D
F
G
G1
S
MIN
.094
.016
.189
.159 REF.
.001 MIN.
MAX
.105
.022
.205