CDIDI CDLL256, CDLL255, CDLL254, CDLL253, CDLL252 Datasheet

22 COREY STREET, MELROSE, MASSACHUSETTS 02176

PHONE [phone] FAX [phone]

WEBSITE: http://www.cdi-diodes.com E-mail: [e-mail]

ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified

MINIMUM MINIMUM

DYNAMIC KNEE MAXIMUM

TYPE REGULATOR CURRENT IMPEDANCE IMPEDANCE LIMITING PEAK

NUMBER l p (mA) @ V

S

= 25V @V

S

= 25V @V

K

= 6.0 V VOLTAGE OPERATING

(Note 1) Z

S

(KΩ)Z

K

(KΩ)@ l

L

= 0.8 l p (min) VOLTAGE

NOM MIN MAX (Note 2) (Note 3) V

L

(VOLTS) VOLTS

CDLL250 5.10 4.59 5.61 100 4.0 3.67 80

CDLL251 5.60 5.04 6.16 90 4.0 4.03 80

CDLL252 6.20 5.58 6.82 80 3.0 4.46 70

CDLL253 6.80 6.12 7.48 70 2.0 4.90 70

CDLL254 7.50 6.75 8.25 50 1.5 5.40 60

CDLL255 8.20 7.38 9.02 30 1.5 5.90 60

CDLL256 9.10 8.19 10.01 20 1.0 6.55 50

CDLL257 10.00 9.00 11.10 10 1.0 7.20 50

NOTE 1 Pulse measurement @ 1% duty cycle, 10 milliseconds maximum.

NOTE 2 Z

S

is derived by superimposing A 90Hz RMS signal equal to 10% of V

S

on V

S

NOTE 3 Z

K

is derived by superimposing A 90Hz RMS signal equal to 10% of V

K

on V

K

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: (R

O

JEC

):

100 ˚C/W maximum at L = 0 inch

THERMAL IMPEDANCE: (Z

OJX

): 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

DIM MIN MAX MIN MAX

D 2.39 2.66 .094 .105

F 0.41 0.55 .016 .022

G 4.80 5.20 .189 .205

G1 4.11 REF. .159 REF.

S 0.03 MIN. .001 MIN.