Document
Pb RoHS COMPLIANCE
BZT55B SERIES
0.5 Watts Hermetically Sealed Glass Zener Voltage Regulators
QUADRO MINI MELF
Features
Zener voltage range 2.0 to 75 volts Mini-MELF package Surface device type mounting Hermetically sealed glass Compression Bonded Construction All external surfaces are corrosion
resistant and terminals are readily solderable RoHS compliant Matte Tin(Sn) lead finish Blue color band indicates negative polarity
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characteristics
Rating at 25 oC ambient temperature unless otherwise specified.
Type Number
Symbol
Value
Power Dissipation
Ptot 500
Operating and Storage Temperature Range
TJ, TSTG
-65 to + 200
Notes: These ratings are limiting values above which the serviceability of the diode may be impaired
Units
mW oC
Version: B07
RATINGS AND CHARACTERISTIC CURVES(BZT55B SERIES)
TKVZ - Temperature Coefficient of VZ (10-4/K)
Ptot - Total Power Dissipation (mW)
600 500 400 300 200 100
0 0 40 80 120 160 200
Tamb - Ambient Temperature (°C) Figure 1. Total Power Dissipation vs. Ambient Temperature
1000
Tj = 25 °C 100
IZ = 5 mA 10
VZ - Voltage Change (mV)
1 0 5 10 15 20 25 V - Z-Voltage (V)
Z
Figure 2. Typical Change of Working Voltage under Operating Conditions at Tamb=25°C
VZtn - Relative Voltage Change
1.3 VZtn = VZt/VZ (25 °C)
1.2
TKVZ = 10 x 10-4/K 8 x 10-4/K 6 x 10-4/K
1.1
4 x 10-4/K 2 x 10-4/K
1.0 0
- 2 x 10-4/K
0.9 - 4 x 10-4/K
0.8 - 60 0
60 120 180 240
Tj - Junction Temperature (°C)
Figure 3. Typical Change of Working Voltage vs. Junction Temperature
15
10
5 IZ = 5 mA
0
-5 0 10 20 30 40 50 VZ - Z-Voltage (V)
Figure 4. Temperature Coefficient of Vz vs. Z-Voltage
CD - Diode Capacitance (pF)
200
150 VR = 2 V
100 Tj = 25 °C
50
0 0 5 10 15 20 25 VZ - Z-Voltage (V)
Figure 5. Diode Capacitance vs. Z-Voltage
IF - Forward Current (mA)
100
10
Tj = 25 °C 1
0.1
0.01
0.001 0
0.2 0.4 0.6 0.8 1.0
VF - Forward Voltage (V) Figure 6. Forward Current vs. Forward Voltage
Version: B07
RATINGS AND CHARACTERISTIC CURVES(BZT55B SERIES)
100 1000
rZ - Differential Z-Resistance (Ω)
IZ - Z-Current (mA)
80 Ptot = 500 mW
Tamb = 25 °C 60
40
20
0 0 4 6 8 12 VZ - Z-Voltage (V)
Figure 7. Z-Current vs. Z-Voltage
20
IZ = 1 mA 100
5 mA 10 10 mA
1 Tj = 25 °C 0 5 10 15 20 25 VZ - Z-Voltage (V)
Figure 9. Differential Z-Resistance vs. Z-Voltage
IZ - Z-Current (mA)
50
40
Ptot = 500 mW T = 25 °C
amb
30
20
10
0 15 20 25 30
VZ - Z-Voltage (V)
Figure 8. Z-Current vs. Z-Voltage
35
Zthp - Thermal Resistance for Pulse Cond. (KW)
1000
tP/T = 0.5 100
tP/T = 0.2
10 tP/T = 0.1
tP/T = 0.01 tP/T = 0.02
tP/T = 0.05
1 10-1
100
Single Pulse
RthJA = 300 K/W T=T -T
jmax amb
iZM = (- VZ + (VZ2 + 4rzj x T/Zthp) 1/2)/(2rzj) 101 102
tP - Pulse Length (ms) Figure 10. Thermal Response
Version: B07
ELECTRICAL CHARACTERISTICS (TA=25OC unless otherwise noted)
VZ @ IZT
Type
(Volts)
ZZT @ IZT
Number
VZ
VZ IZT Ohms IZK ZZK @ IZK
Min (V) Max .