BZX55C Series
MECHANICAL DATA
Dimensions in mm(inches)
2.54 ± 0.13
(0.10 ± 0.005)
0.51 ± 0.10
(0.02 ± 0.004)
VOLTAGE REGULATOR
DIODE IN A
CERAMIC SURFACE MOUNT
PACKAGE
FOR HI–REL APPLICATIONS
0.31 rad.
(0.012)
2
0.76 ± 0.15
(0.03 ± 0.006)
3
1
1.91 ± 0.10
(0.075 ± 0.004)
A
0.31 rad.
(0.012)
3.05 ± 0.13
(0.12 ± 0.005)
FEATURES
1.40
(0.055)
max.
A = 1.02 ± 0.10
(0.04 ± 0.004)
• HERMETIC CERAMIC SURFACE MOUNT
PACKAGE (SOT23 COMPATIBLE)
LCC1 PACKAGE
• VOLTAGE RANGE 2.4 TO 75V
Underside View
Pad 1 – Anode
Pad 2 – N/C
Pad 3 – Cathode
ABSOLUTE MAXIMUM RATINGS
PTOT
Power Dissipation
500mW
TMB = 25°C
4mW/°C
Derate above 25°C
TOP
Maximum Operating Ambient Temperature
–55 to +150°C
TSTG
Storage Temperature Range
–65 to +175°C
TSOL
Soldering Temperature
RθJA
Thermal Resistance Junction to Ambient
336°C/W
RθJ–MB
Thermal Resistance Junction to Mounting Base
140°C/W
(5 seconds max.)
260°C
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise stated)
Parameter
Test Conditions
For VZ nom. ≤ 36V,
IZ = 5mA
For VZ nom. ≥ 39V,
IZ = 2.5mA
VZ
Zener Voltage
IR
Reverse Current
ZZ
Small Signal Breakdown Impedance
IZ = IZ test
ZK
Small Signal Breakdown Impedance
For VZ nom. ≤ 36V,
IZK = 1.0mA
near breakdown knee
For VZ nom. ≥ 39V,
IZK = 0.5mA
VR = VR test
VR = VR test
Min.
VZ min.
Typ.
Max.
VZ nom. VZ max.
IR max.
TAMB = 150°C
IR max(2)
Units
V
µA
ZZ max.
Ω
ZK max.
Ω
See table 1 for type variants and test parameters.
Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed
to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use.
Semelab encourages customers to verify that datasheets are current before placing orders.
Semelab plc.
Telephone +44(0)1455) 556565. Fax +44(0)1455) 552612.
E-mail: sales@semelab.co.uk
Website http://www.semelab.co.uk
Document Number 5743
Issue 4
