CYStech Electronics Corp.
Spec. No. : C326LC
Issued Date : 2003.05.20
Revised Date :
Page No. : 1/3
CBZX55CXXLC series CYStek Product Specification
500mW DO-35 Hermetically sealed Glass Zener Voltage Regulators
CBZX55CXXLC
Descriptions
This is a complete series of 500mW zener diodes with limits and excellent operating characteristics that reflect
the superior capabilities of silicon-oxide passivated junctions. All this in an axial-lead hermetically sealed glass
package that offers protection in all common environmental conditions.
Features
•Zener voltage range : 2.4 V to 47 V
•ESD rating of class 3 (>16kV) per Human Body Model
•Double slug type construction
•Metallurgical bonded construction
Mechanical Characteristics:
•Case: double slug type, hermetically sealed glass
•Finish: all external surfaces are corrosion resistant and leads are readily solderable
•Maximum lead temperature for soldering purposes: 230℃, 1/16″ from the case for 10 seconds
•Polarity: cathode indicated by the polarity band
•Mounting position: any
Maximum Ratings
Characteristics Symbol Max Unit
Total Device Dissipation Ptot 500* mW
Thermal Resistance Junction to Ambient RθJA 300*
°C/W
Storage Temperature Tstg -65 to +175 °C
Junction Temperature Tj 175 °C
*Valid provided that leads are kept at ambient temperature at a distance of 8mm from case.
CYStech Electronics Corp.
Spec. No. : C326LC
Issued Date : 2003.05.20
Revised Date :
Page No. : 2/3
CBZX55CXXLC series CYStek Product Specification
Electrical Characteristics (TL=30℃, unless otherwise noted, VF=1.0V Max @IF=100mA for all types.)
Test
Current
Maximum Zener
Impedance(Note 2)
Maximum Reverse
Leakage Current
Device
Nominal
Zener
Voltage
Vz at IzT
(V)(Note1)
IZT(mA)
ZZT at
IZT
(Ω)
ZZK at
IZK=1mA
(Ω)
Typical
Temperature
Coefficient
(%/℃)
IR
(μA)
Test
Voltage
(V)
Maximum
Regulation
Current
IZM(mA)
(Note 3)
CBZX55C2V4 2.28-2.56 5 85 600 -0.070 50 1.0 150
CBZX55C2V7 2.5-2.9 5 85 600 -0.070 10 1.0 135
CBZX55C3V0 2.8-3.2 5 85 600 -0.070 4 1.0 125
CBZX55C3V3 3.1-3.5 5 85 600 -0.065 2 1.0 115
CBZX55C3V6 3.4-3.8 5 85 600 -0.060 2 1.0 105
CBZX55C3V9 3.7-4.1 5 85 600 -0.050 2 1.0 95
CBZX55C4V3 4.0-4.6 5 75 600 -0.025 1 1.0 90
CBZX55C4V7 4.4-5.0 5 60 600 -0.010 0.5 1.0 85
CBZX55C5V1 4.8-5.4 5 35 550 +0.015 0.1 1.0 80
CBZX55C5V6 5.2-6.0 5 25 450 +0.025 0.1 1.0 70
CBZX55C6V2 5.8-6.6 5 10 200 +0.035 0.1 2.0 64
CBZX55C6V8 6.4-7.2 5 8 150 +0.045 0.1 3.0 58
CBZX55C7V5 7.0-7.9 5 7 50 +0.050 0.1 5.0 53
CBZX55C8V2 7.7-8.7 5 7 50 +0.050 0.1 6.0 47
CBZX55C9V1 8.5-9.6 5 10 50 +0.060 0.1 7.0 43
CBZX55C10 9.4-10.6 5 15 70 +0.070 0.1 7.5 40
CBZX55C11 10.4-11.6 5 20 70 +0.070 0.1 8.5 36
CBZX55C12 11.4-12.7 5 20 90 +0.070 0.1 9.0 32
CBZX55C13 12.4-14.1 5 26 110 +0.070 0.1 10 29
CBZX55C15 13.8-15.6 5 30 110 +0.070 0.1 11 27
CBZX55C16 15.3-17.1 5 40 170 +0.070 0.1 12 24
CBZX55C18 16.8-19.1 5 50 170 +0.070 0.1 14 21
CBZX55C20 18.8-21.2 5 55 220 +0.070 0.1 15 20
CBZX55C22 20.8-23.3 5 55 220 +0.070 0.1 17 18
CBZX55C24 22.8-25.6 5 80 220 +0.080 0.1 18 16
CBZX55C27 25.1-28.9 5 80 220 +0.080 0.1 20 14
CBZX55C30 28-32 5 80 220 +0.080 0.1 22 13
CBZX55C33 31-35 5 80 220 +0.080 0.1 24 12
CBZX55C36 34-38 5 80 220 +0.080 0.1 27 11
CBZX55C39 37-41 2.5 90 500 +0.080 0.1 30 10
CBZX55C43 40-46 2.5 90 600 +0.080 0.1 33 9.2
CBZX55C47 44-50 2.5 110 700 +0.080 0.1 36 8.5
Note: 1.The type numbers listed have zener voltage min/max as shown. Device tolerance of ±2% are indicated by a “B”
instead of a “C”. Zener voltage is measured with the device junction in thermal equilibrium at the lead temperature
of 30℃±1℃ and 3/8″ lead length.
2.ZZT and ZZK are measured by dividing the ac voltage drop across the device by the ac current applied. The specified
limits are for IZ(ac) =0.1IZ(dc) with the ac frequency = 1k Hz.
3.This data was calculated using nominal voltages. The maximum current handling capability on a worse case basis is
limited by the actual zener voltage at the operating point and the powered derating curve.
CYStech Electronics Corp.
Spec. No. : C326LC
Issued Date : 2003.05.20
Revised Date :
Page No. : 3/3
CBZX55CXXLC series CYStek Product Specification
DO-35(Glass) Dimension
*:Typical
Inches Millimeters Inches Millimeters
DIM Min. Max. Min. Max.
DIM Min. Max. Min. Max.
A φ0.0181 φ0.0220 φ0.46 φ0.56 D 0.9646 1.2811 24.50 32.54
B 0.9646 1.2811 24.50 32.54 E
φ0.0602 φ0.0787 φ1.53 φ2.00
C 0.1200 0.1700 3.05 4.20
Notes : 1.Controlling dimension : millimeters.
2.Maximum lead thickness includes lead finish thickness, and minimum lead thickness is the minimum thickness of base material.
3.If there is any question with packing specification or packing method, please contact your local CYStek sales office.
Important Notice:
• All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of CYStek.
• CYStek reserves the right to make changes to its products without notice.
• CYStek semiconductor products are not warranted to be suitable for use in Life-Support Applications, or systems.
• CYStek assumes no liability for any consequence of customer product design, infringement of patents, or application assistance.
A
B C D
DO-35 glass package, CYStek package code: LC
BCD
A
E
