Datasheet

2002 Feb 27 2
NXP Semiconductors Product data sheet
Voltage regulator diodes BZX79 series
FEATURES
• Total power dissipation: max. 500 mW
• Two tolerance series: ±2%, and approx. ±5%
• Working voltage range: nom. 2.4 to 75 V (E24 range)
• Non-repetitive peak reverse power dissipation:
max.
40 W.
APPLICATIONS
• Low voltage stabilizers or voltage references.
DESCRIPTION
Low-power voltage regulator diodes in hermetically sealed
leaded glass SOD27 (DO-35) packages. The diodes are
available in the normalized E24 ±2% (BZX79-B) and
approx.
±5% (BZX79-C) tolerance range. The series
consists of 37 types with nominal working voltages from
2.4
to 75 V.
Fig.1 Simplified outline (SOD27; DO-35) and
symbol.
The diodes are type branded.
handbook, halfpage
MAM239
ka
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
Notes
1. Device mounted on a printed circuit-board without metallization pad; lead length max.
2. Tie-point temperature ≤ 50 °C; max. lead length 8 mm.
ELECTRICAL CHARACTERISTICS
Total BZX79-B and BZX79-C series
T
j
= 25 °C unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
I
F
continuous forward current − 250 mA
I
ZSM
non-repetitive peak reverse current t
p
= 100 μs; square wave;
T
j
= 25 °C prior to surge
see Tables 1 and 2 A
P
tot
total power dissipation T
amb
= 50 °C; note 1 − 400 mW
T
amb
= 50 °C; note 2 − 500 mW
P
ZSM
non-repetitive peak reverse power
dissipation
t
p
= 100 μs; square wave;
T
j
= 25 °C prior to surge; see Fig.3
− 40 W
T
stg
storage temperature −65 +200 °C
T
j
junction temperature −65 +200 °C
SYMBOL PARAMETER CONDITIONS MAX. UNIT
V
F
forward voltage I
F
= 10 mA; see Fig.4 0.9 V