23 MILS
15 MILS
15 MILS23 MILS
DESIGN DATA
METALLIZATION:
Top: (Anode)......................Al
Back: (Cathode)............ ...Au
AL THICKNESS............25,000 ÅMin
GOLD THICKNESS........4,000 ÅMin
CHIP THICKNESS..................10 Mils
CIRCUIT LAYOUT DATA:
For Zener operation, cathode
must be operated positive with
respect to anode.
TOLERANCES: ALL Dimensions
+2 mils, Except Anode Pad Where
Tolerance is + 0.1 mils.
• 1N5518B THRU 1N5546B AVAILABLE IN JANHC AND JANKC
PER MIL-PRF-19500/437
• ZENER DIODE CHIPS
• ALL JUNCTIONS COMPLETELY PROTECTED WITH SILICON DIOXIDE
• ELECTRICALLY EQUIVALENT TO 1N5518B THRU 1N5546B
• 0.5 WATT CAPABILITY WITH PROPER HEAT SINKING
• COMPATIBLE WITH ALL WIRE BONDING AND DIE ATTACH TECHNIQUES,
WITH THE EXCEPTION OF SOLDER REFLOW
CD5518B
thru
CD5546B
MAXIMUM RATINGS
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
Forward Voltage @ 200 mA: 1.5 Volts Maximum
ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified
NOMINAL MAX. REVERSE
JEDEC ZENER MAX. ZENER LEAKAGE CURRENT REGULATION LOW
TYPE VOLTAGE TEST IMPEDANCE FACTOR VZ
NUMBER VZ@ lZT CURRENT ZZT @ lZT l RVR∆VZCURRENT
VOLTS lZT OHMS
µ
Adc VOLTS lZL
(Note 1) mAdc (Note 2) VOLTS (Note 3) mAdc
CD5518B 3.3 20 26 5.0 1.0 0.90 2.0
CD5519B 3.6 20 24 3.0 1.0 0.90 2.0
CD5520B 3.9 20 22 1.0 1.0 0.90 2.0
CD5521B 4.3 20 18 3.0 1.5 0.75 2.0
CD5522B 4.7 10 22 2.0 2.0 0.60 1.0
CD5523B 5.1 5.0 26 2.0 2.5 0.65 0.25
CD5524B 5.6 3.0 30 2.0 3.5 0.30 0.25
CD5525B 6.2 1.0 30 1.0 5.0 0.20 0.01
CD5526B 6.8 1.0 30 1.0 6.2 0.10 0.01
CD5527B 7.5 1.0 35 0.5 6.8 0.05 0.01
CD5528B 8.2 1.0 40 0.5 7.5 0.05 0.01
CD5529B 9.1 1.0 45 0.1 8.2 0.05 0.01
CD5530B 10.0 1.0 60 0.05 9.1 0.10 0.01
CD5531B 11.0 1.0 80 0.05 9.9 0.20 0.01
CD5532B 12.0 1.0 90 0.05 10.8 0.20 0.01
CD5533B 13.0 1.0 90 0.01 11.7 0.20 0.01
CD5534B 14.0 1.0 100 0.01 12.6 0.20 0.01
CD5535B 15.0 1.0 100 0.01 13.5 0.20 0.01
CD5536B 16.0 1.0 100 0.01 14.4 0.20 0.01
CD5537B 17.0 1.0 100 0.01 15.3 0.20 0.10
CD5538B 18.0 1.0 100 0.01 16.2 0.20 0.01
CD5539B 19.0 1.0 100 0.01 17.1 0.20 0.01
CD5540B 20.0 1.0 100 0.01 18.0 0.20 0.01
CD5541B 22.0 1.0 100 0.01 19.8 0.25 0.01
CD5542B 24.0 1.0 100 0.01 21.6 0.30 0.01
CD5543B 25.0 1.0 100 0.01 22.4 0.35 0.01
CD5544B 28.0 1.0 100 0.01 25.2 0.40 0.01
CD5545B 30.0 1.0 100 0.01 27.0 0.45 0.01
CD5546B 33.0 1.0 100 0.01 29.7 0.50 0.01
NOTE 1 Suffix “B” voltage range equals nominal Zener voltage + 5%. Suffix “A” equals
+10%. No Suffix equals + 20%. Zener voltage is read using a pulse
measurement, 10 milliseconds maximum. "C" suffix = + 2% and "D" suffix = +1%.
NOTE 2 Zener impedance is derived by superimposing on lZT A 60Hz rms a.c.
current equal to 10% of lZT.
NOTE 3 ∆VZ is the maximum difference between VZ@ 1ZT and VZ at 1ZL measured
with the device junction in thermal equilibrium at an ambient temperature of
+25° + 3°C.
BACKSIDE IS CATHODE
22 COREY STREET, MELROSE, MASSACHUSETTS 02176
PHONE (781) 665-1071 F AX (781) 665-7379
WEBSITE: http://www .cdi-diodes.com E-mail: mail@cdi-diodes.com
CD5518B thru CD5546B
.1 .2 .3 .4 .5 1 2 5 10 20 30 40 50 100
OPERATING CURRENT lZT (mA)
FIGURE 3
ZENER IMPEDANCE VS. OPERATING CURRENT
1000
500
400
300
200
100
50
40
30
20
10
5
4
3
2
1
ZENER IMPEDANCE ZZT (OHMS)
3.3 VOLT
5.1 VOLT
27 VOLT
11 VOLT
6.2 VOLT
