Microsemi 1N821, 1N829A-1 User Manual

The popular 1N821 thru 1N829 series of Zero-TC Reference Diodes provides a selection of both 6.2 V and 6.55 V nominal voltages and temperature coefficients to as low as 0.0005%/oC for minimal voltage change with temperature when operated at 7.5 mA. These glass axialleaded DO-7 reference diodes are also available in JAN, JANTX, JANTXV, and JANS military qualifications. Microsemi also offers numerous other Zener Reference Diode products for a variety of other voltages up to 200 V.

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DESCRIPTION

1N821 thru 1N829A-1 DO-7

6.2 & 6.55 Volt Temperature Compensated Zener Reference Diodes

APPEARANCE

DO-7 (DO-204AA)

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IMPORTANT: For the most current data, consult

• JEDEC registered 1N821 thru 1N829 series

• Internal metallurgical bonds

• Double anode option with 1N822 and 1N824 selection

• Reference voltage selection of 6.2 V & 6.55 V +/-5%

with further tight tolerance options at nominal of 6.35 V

• 1N821, 823, 825, 827 and 829 also have military qualification to MIL-PRF-19500/159 up to the JANS level by adding JAN, JANTX, JANTXV, or JANS prefixes to part numbers as well as the “-1” suffix, e.g. JANTX1N829-1, etc.

• Radiation Hardened devices available by changing “1N” prefix to “RH”, e.g. RH827, RH 829, RH829A, etc. Also consult factory for “RH” data sheet brochure

• Military surface mount equivalents also available in DO-213AA with UR-1 suffix and JAN, JANTX, or JANTXV prefix, e.g. JANTX1N829UR-1 (see separate data sheet)

• Also available in smaller axial-leaded DO-35 package (see separate data sheet)

• Operating & StorageTemperature: -65

• DC Power Dissipation: 500 mW @ T

maximum current I voltage-temperature stability, I mW in dissipated power)

• Solder temperatures: 260

FEATURES

MAXIMUM RATINGS

of 70 mA. NOTE: For optimum

= 7.5 mA (less than 50

C for 10 s (maximum)

MICROSEMI’s

C to +175oC

= 25oC and

website: http://www.microsemi.com

• Provides minimal voltage changes over a broad

• For instrumentation and other circuit designs

• Maximum temperature coefficient selections

• Tight voltage tolerances with nominal reference

• Flexible axial-lead mounting terminals

• Nonsensitive to ESD per MIL-STD-750 Method

APPLICATIONS / BENEFITS

temperature range

requiring a stable voltage reference

available from 0.01%/ºC to 0.0005%/ºC

voltages of 6.35 V available by adding tolerance 1%, 2%, 3%, etc. after the part number for identification e.g. 1N827-2%, 1N829A -1%, 1N8291-1%, etc.

1020

MECHANICAL AND PACKAGING

• CASE: Hermetically sealed glass case with DO-7 (DO-204AA) package

• TERMINALS: Tin-lead plated and solderable per MIL-STD-750, Method 2026

• MARKING: Part number and cathode band (except double anode 1N822 and 1N824)

• POLARITY: Reference diode to be operated with the banded end positive with respect to the opposite end

• TAPE & REEL option: Standard per EIA-296 (add “TR” suffix to part number)

• WEIGHT: 0.2 grams.

• See package dimensions on last page

1N821—1N829A-1

Microsemi

Scottsdale Division

8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503

Page 1

SCOTTSDALE DIVISION

1N821 thru 1N829A-1 DO-7

6.2 & 6.55 Volt Temperature Compensated Zener Reference Diodes

*ELECTRICAL CHARACTERISTICS @ 25oC, unless otherwise specified

JEDEC

TYPE NUMBER

(Note 1, 5 & 6)

ZENER

VOLTAGE

(Note 1 and 4)

@ IZT

ZENER

TEST

CURRENT

MAXIMUM

ZENER

IMPEDANCE

(Note 2)

@ IZT

MAXIMUM REVERSE CURRENT

@ 3 V

VOLTAGE

TEMPERATURE

STABILITY

MAX)

(∆V

C to +100oC

-55 (Note 3 and 4)

TEMPERATURE

COEFFICIENT

VOLTS mA OHMS µA mV %/oC

1N821 1N821A 1N822† 1N823 1N823A 1N824† 1N825 1N825A 1N826 1N827 1N827A 1N828 1N829 1N829A

5.9 – 6.5

6.2 – 6.9

5.9 – 6.5

6.2 – 6.9

5.9 – 6.5

7.5

15 10 15 15 10 15 15 10 15 15 10 15 15 10

2.0

96 96 96 48 48 48 19 19 20

9 9

5 5

*JEDEC Registered Data. †Double Anode; electrical specifications apply under both bias polarities.

NOTES:

1. Add a “-1” suffix for internal metallurgical bond. When ordering devices with tighter tolerances than specified for the V

6.35 V, add a hyphened suffix to the part number for desired tolerance, e.g. 1N827-1-2%, 1N829-1-1%, 1N829A-1%, 1N829A-1-1%, etc.

2. Zener impedance measured by superimposing 0.75 mA ac rms on 7.5 mA dc @ 25

3. The maximum allowable change observed over the entire temperature range i.e., the diode voltage will not exceed the specified mV change at discrete temperature between the established limits.

4. Voltage measurements to be performed 15 seconds after application of dc current.

5. 1N821, 1N823, 1N825, 1N827, and 1N829 also have qualification to MIL-PRF-19500/159 by adding the JAN,

JANS prefix to part numbers as well as the “-1” suffix; e.g. JANTX1N827-1, JANTXV1N829-1, etc.

6. Designate Radiation Hardened devices with “RH” prefix instead of “1N”, e.g. RH829A instead of 1N829A.

GRAPHS

JANTX, JANTXV, or

EFFECTIVE

0.01

0.005

0.002

0.001

0.0005

voltage nominal of

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The curve shown in Figure 1 is typical of the diode series and greatly simplifies the estimation of the Temperature Coefficient (TC) when the diode is operated at currents other than 7.5mA.

EXAMPLE: A diode in this series is operated at a current of

7.5mA and has specified Temperature Coefficient (TC) limits of +/-0.005%/ limits for this same diode operated at a current of 6.0mA, the new TC limits (%/ FIGURE 1.

At a test current of 6.0mA the change in Temperature Coefficient (TC) is approximately –0.0006%.

0.005% +0.0044%/

C. To obtain the typical Temperature Coefficient

C) can be estimated using the graph in

C and –0.0006%/oC gives the estimated limits of

C and -0.0056%/oC.

C. The algebraic sum of +/-

Change in temperature coefficient (%/

TYPICAL CHANGE OF TEMPERATURE COEFFICIENT WITH CHANGE IN OPERATING CURRENT.

FIGURE 1

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Change in temperature coefficient (mV/

1N821—1N829A-1

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