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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 specified.
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 Specifications Apply Under Both Bias Polarities.
NOTE 1
Zener impedance is derived by superimposing on l A 60Hz rms a.c. current equal ZT to 10% of lZT. The maximum allowable change observed over the entire temperature range i.e., the diode voltage will not exceed the specified mV at any discrete temperature between the established limits, per JEDEC standard No. 5.
NOTE 2
22 COREY STREET, MELROSE, MASSACHUSETTS 02176 PHONE (781) 665-1071 FAX (781) 665-7379 WEBSITE: http://www.cdi-diodes.com E-mail: mail@cdi-diodes.com
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

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