1N829 Philips Semiconductors, 1N829 Datasheet - Page 3

• Manufacturer Part Number: 1N829
• Description: Voltage reference diodes
• Manufacturer: Philips Semiconductors

Philips Semiconductors
ELECTRICAL CHARACTERISTICS
T
Notes
1. The quoted values of V
2. All reference diodes are characterized by the ‘box method’. This guarantees a maximum voltage excursion ( V
THERMAL CHARACTERISTICS
1996 Mar 20
V
r
R
R
SYMBOL
SYMBOL
j
dif
S
ref
= 25 C unless otherwise specified.
th j-tp
th j-a
Voltage reference diodes
V
Z
differential resistance r
a) As the max. r
b) The temperature coefficient of the reference voltage S
over the specified temperature range, at the specified test current (I
points within the range. V
and lowest values must not exceed the maximum V
a reference. It may be derived from:
ref
result in a V
it is however very significant on a 1N829 ( V
specified test current and the S
of I
particularly to the 1N829. The effect of the stability of I
Z
is important, however, the stability of I
reference voltage
reference voltage excursion
temperature coefficient
differential resistance
thermal resistance from junction to tie-point
thermal resistance from junction to ambient
1N821; 1N821A
1N823; 1N823A
1N825; 1N825A
1N827; 1N827A
1N829; 1N829A
1N821; 1N821A
1N823; 1N823A
1N825; 1N825A
1N827; 1N827A
1N829; 1N829A
1N821 to 1N829
1N821A to 1N829A
dif
ref
PARAMETER
of the device can be 15 , a change of 0.01 mA in the current through the reference diode will
of 0.01 mA
dif
PARAMETER
ref
and the temperature coefficient S
Z
is measured and recorded at each temperature specified. The V
are based on a constant current I
15
Z
of the reference diode will be different at different levels of I
S
= 0.15 mV. This level of V
Z
=
I
I
T
see Fig.2; notes 1 and 2
I
notes 1 and 2
I
------------------------------------- -
T
Z
Z
Z
Z
amb
V
amb2
=7.5 mA
=7.5 mA; test points for
= 7.5 mA: see Fig.3;
= 7.5 mA; see Fig.4
ref1
Z
, once the level has been set, is far more significant. This applies
: 55; +25; +75; +100 C;
ref
–
–
< 5 mV).
CONDITIONS
V
T
ref
amb1
ref2
8 mm from the body
lead length 10 mm
3
given. Therefore the temperature coefficient is only given as
Z
Z
Z
is a function of I
on S
.
------------------- - %/K
V
Z
. Two factors can cause V
ref nom
100
CONDITIONS
Z
ref
is shown in Fig.3.
Z
is not significant on a 1N821 ( V
), verified by tests at indicated temperature
Z
. Reference diodes are classified at the
MIN.
5.89
1N821A to 1N829A
TYP.
1N821 to 1N829
6.20
VALUE
ref
300
375
to change, namely the
ref
Z
Product specification
between the highest
. The absolute value
96
48
19
15
10
6.51
9
5
0.01
0.005
0.002
0.001
0.0005 %/K
MAX.
ref
< 96 mV),
UNIT
K/W
K/W
V
mV
mV
mV
mV
mV
%/K
%/K
%/K
%/K
UNIT
ref
)