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MMBZ5221B - MMBZ5257B — Zener Diodes
November 2015
MMBZ5221B - MMBZ5257B
Zener Diodes
Tolerance = 5%
3
CONNECTION
DIAGRAM
3
2
1
SOT-23
1
2 NC
Absolute Maximum Ratings
(1, 2)
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-
ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-
tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The
absolute maximum ratings are stress ratings only. Values are at T
A
= 25°C unless otherwise noted.
Symbol
P
D
R
θJA
Power Dissipation
Parameter
Referencing R
θJA
, T
A
= 25°C
Referencing
ψ
JL
, T
L
= 25°C
Value
250
550
465
220
-55 to +150
+150
Unit
mW
°C/W
°C/W
°C
°C
Junction-to-Ambient Thermal Resistance
(3)
Junction-to-Lead Thermal Characteristics
(with reference to Cathode)
Storage Temperature Range
Operating Junction Temperature
ψ
JL
T
STG
T
J
Note:
1.These ratings are based on a maximum junction temperature of 150°C.
2.These are steady state limits. The factory should be consulted on applications involving pulsed or low duty cycle
operations.
3. Device mounted on FR-4 PCB, board size = 76.2 mm x 114.3 mm
