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* 1N821-1,1N823-1,1N825-1,1N827-1 AND 1N829-1 AVAILABLE IN JAN, JANTX,
JANTXV
AND JANS PER MIL-PRF-19500/159
* TEMPERATURE COMPENSATED ZENER REFERENCE DIODES * METALLURGICALLY BONDED * DOUBLE PLUG CONSTRUCTION
1N821 thru 1N829A and 1N821-1 thru 1N829-1
MAXIMUM RATINGS
Operating Temperature: -65C to +175C Storage Temperature: -65C to +175C DC Power Dissipation: 500mW @ +50C Power Derating: 4 mW / C above +50C
REVERSE LEAKAGE CURRENT
lR = 2A @ 25C & VR = 3 Vdc
ELECTRICAL CHARACTERISTICS @ 25C, unless otherwise speci1/2ed.
JEDEC TYPE NUMBER
ZENER VOLTAGE vz @ I ZT
ZENER TEST CURRENT I ZT
MAXIMUM ZENER IMPEDANCE (Note 1) Z ZT
VOLTAGE TEMPERATURE STABILITY V ZT -55 to +100 (Note 2)
EFFECTIVE TEMPERATURE COEFFICIENT
FIGURE 1
% / C 0.01 0.01 0.01 0.005 0.005 0.005 0.002 0.002 0.002 0.001 0.001 0.001 0.0005 0.0005
VOLTS 1N821 1N821A 1N822 1N823 1N823A 1N824 1N825 1N825A 1N826 1N827 1N827A 1N828 1N829 1N829A 5.9--6.5 5.9--6.5 5.9--6.5 5.9--6.5 5.9--6.5 5.9--6.5 5.9--6.5 5.9--6.5 6.2--6.9 5.9--6.5 5.9--6.5 6.2--6.9 5.9--6.5 5.9--6.5
mA 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5
OHMS 15 10 15 15 10 15 15 10 15 15 10 15 15 10
mV 96 96 96 48 48 48 19 19 20 9 9 10 5 5
DESIGN DATA
CASE: Hermetically sealed glass case. DO - 35 outline. LEAD MATERIAL: Copper clad steel. LEAD FINISH: Tin / Lead POLARITY: Diode to be operated with the banded (cathode) end positive. MOUNTING POSITION: Any.
Double Anode: Electrical Speci1/2cations Apply Under Both Bias Polarities.
NOTE 1
Zener impedance is derived by superimposing on lZT A 60Hz rms a.c. current equal to 10% of lZT. The maximum allowable change observed over the entire temperature range i.e., the diode voltage will not exceed the speci1/2ed mV at any discrete temperature between the established limits, per JEDEC standard No. 5.
NOTE 2
6 LAKE STREET, LAWRENCE, MASSACHUSETTS 01841 PHONE (978) 620-2600 FAX (978) 689-0803 WEBSITE: http://www.microsemi.com
15
1N821
thru INCLUDING -1 VERSIONS
1N829A
500
Pd, Rated Power Dissipation (mW)
600 500 400 300 200 100 0 25 50 100 150 175
ZENER IMPEDANCE ZZT (OHMS)
100 50
10 5
TL, Lead temperature (C) 3/8" from body FIGURE 2
POWER DERATING CURVE
1 5 6 7 8 9 10 OPERATING CURRENT lZT (mA)
FIGURE 3
ZENER IMPEDANCE VS. OPERATING CURRENT
CHANGE IN TEMPERATURE COEFFICIENT ( %/C)
+.0010 +.0005 0 -.0005 -.0010
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
OPERATING CURRENT lZT (mA)
FIGURE 4
TYPICAL CHANGE OF TEMPERATURE COEFFICIENT WITH CHANGE IN OPERATING CURRENT 16

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