500 mW AXIAL-LEADED ZENER DIODES
SCOTTSDALE DIVISION
1N4678 thru 1N4717-1 DO-7
WWW.Microsemi .COM 1N4678 – 1N4717-1 4678 – 1N4717-1
DESCRIPTION APPEARANCE
The 1N4678 thru 1N4717 series of 0.5 watt Zener Voltage Regulators
provides a selection from 1.8 to 43 volts in standard 5% tolerances as well
as tighter tolerances identified by different suffix letters on the part number.
These glass axial-leaded DO-7 Zeners also have an internal-metallurgical-
bond similar to other military requirements for these packages. Microsemi
also offers numerous other Zener products to meet higher and lower power
applications.
DO-7
(DO-204AA)
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES APPLICATIONS / BENEFITS
• JEDEC registered 1N4678 thru 1N4717
• Internally solder bonded
• Options for screening in accordance with MIL-PRF-
19500 for JAN, JANTX, JANTXV, and JANS are
available by adding MQ, MX, MV, or MSP prefixes
respectively to part numbers as well as “-1” suffix
• Surface Mount available in DO-213AA package
outline by adding a UR or UR-1 (see separate data
sheet for 1N4678UR thru 1N4717UR-1)
• DO-35 glass body axial-leaded Zener equivalents
are also available (see separate data sheet)
• Regulates voltage over a broad operating
current and temperature range
• Guaranteed maximum voltage regulation 10 µA to
100 µA
• Voltage selection from 1.8 to 43 V
• Standard voltage tolerances are plus/minus 5%
with no suffix
• Tight tolerances available in plus or minus 2%
or 1% with C or D suffix respectively
• Flexible axial-lead mounting terminals
• Nonsensitive to ESD per MIL-STD-750 Method 1020
• Capacitance also specified (see Figure 3)
• Inherently radiation hard as described in Microsemi
MicroNote 050
MAXIMUM RATINGS MECHANICAL AND PACKAGING
• Operating and Storage temperature: -65ºC to
+175ºC
• Thermal Resistance: 300 ºC/W junction to lead at
3/8 (10 mm) lead length from body, or 360ºC/W
junction to ambient when mounted on FR4 PC board
(1 oz Cu) with 4 mm2 copper pads and track width 1
mm, length 25 mm
• Steady-State Power: 0.5 watts at TL < 25oC 3/8 inch
(10 mm) from body or 0.417 W at TA < 25ºC when
mounted on FR4 PC board as described for thermal
resistance (see Figure 2 for derating)
• Forward voltage @200 mA: 1.1 volts (maximum)
• Solder Temperatures: 260 ºC for 10 s (max)
• CASE: Hermetically sealed axial-lead glass DO-7
(DO-204AA) package
• TERMINALS: Leads, tin-lead plated solderable per
MIL-STD-750, method 2026
• POLARITY: Cathode indicated by band where
diode is to be operated with the banded end positive
with respect to the opposite end for Zener regulation
• MARKING: Part number
• TAPE & REEL option: Standard per EIA-296 (add
“TR” suffix to part number)
• WEIGHT: 0.2 grams
• See package dimensions on last page
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1
Copyright 2003
11-05-2003 REV A
500 mW AXIAL-LEADED ZENER DIODES
SCOTTSDALE DIVISION
1N4678 thru 1N4717-1 DO-7
WWW.Microsemi .COM 1N4678 – 1N4717-1
*ELECTRICAL CHARACTERISTICS @ 25ºC
NOMINAL
ZENER
VOLTAGE
(Note 3)
ZENER
TEST
CURRENT
MAXIMUM
VOLTAGE
REGULATION
(Note 2 & 3)
MAXIMUM REVERSE
LEAKAGE CURRENT
MAXIMUM
DC ZENER
CURRENT*
VZ I
ZT ∆VZ IR @ VR IZM
JEDEC
TYPE
NUMBER
(Note 1)
VOLTS µA VOLTS µA VOLTS mA
1N4678
1N4679
1N4680
1N4681
1N4682
1.8
2.0
2.2
2.4
2.7
50
50
50
50
50
0.70
0.70
0.75
0.80
0.85
7.5
5.0
4.0
2.0
1.0
1.0
1.0
1.0
1.0
1.0
240
220
200
190
180
1N4683
1N4684
1N4685
1N4686
1N4687
3.0
3.3
3.6
3.9
4.3
50
50
50
50
50
0.90
0.95
0.95
0.97
0.99
0.8
7.5
7.5
5.0
4.0
1.0
1.5
2.0
2.0
2.0
170
160
150
140
130
1N4688
1N4689
1N4690
1N4691
1N4692
4.7
5.1
5.6
6.2
6.8
50
50
50
50
50
0.99
0.97
0.96
0.95
0.90
10.0
10.0
10.0
10.0
10.0
3.0
3.0
4.0
5.0
5.1
120
110
100
90
70
1N4693
1N4694
1N4695
1N4696
1N4697
7.5
8.2
8.7
9.1
10.0
50
50
50
50
50
0.75
0.50
0.10
0.08
0.10
10.0
1.0
1.0
1.0
1.0
5.7
6.2
6.6
6.9
7.6
63.6
58.0
54.8
52.4
49.6
1N4698
1N4699
1N4700
1N4701
1N4702
11.0
12.0
13.0
14.0
15.0
50
50
50
50
50
0.11
0.12
0.13
0.14
0.15
0.05
0.05
0.05
0.05
0.05
8.4
9.1
9.8
10.6
11.4
43.2
40.8
38.0
35.0
32.6
1N4703
1N4704
1N4705
1N4706
1N4707
16.0
17.0
18.0
19.0
20.0
50
50
50
50
50
0.16
0.17
0.18
0.19
0.20
0.05
0.05
0.05
0.05
0.01
12.1
12.9
13.6
14.4
15.2
30.8
29.0
26.4
25.0
23.8
1N4708
1N4709
1N4710
1N4711
1N4712
22.0
24.0
25.0
27.0
28.0
50
50
50
50
50
0.22
0.24
0.25
0.27
0.28
0.01
0.01
0.01
0.01
0.01
16.7
18.2
19.0
20.4
21.2
21.6
19.8
19.0
17.6
17.0
1N4713
1N4714
1N4715
1N4716
1N4717
30.0
33.0
36.0
39.0
43.0
50
50
50
50
50
0.30
0.33
0.36
0.39
0.43
0.01
0.01
0.01
0.01
0.01
22.8
25.0
27.3
29.6
32.6
15.8
14.4
13.2
12.2
11.0
*JEDEC registered data except IZM has been increased (doubled) for 500 mW power dissipation capabilities
NOTES: 1. All types as shown are +/-5% tolerance. Also available in 2% and 1% tolerance by adding suffix C and D respectively.
2. ∆VZ @ 100µA minus VZ @ 10µA.
3. The electrical characteristics are measured after allowing the device to stabilize for 20 seconds when mounted with 3/8”
minimum lead length from the base.
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 2
Copyright 2003
11-05-2003 REV A
500 mW AXIAL-LEADED ZENER DIODES
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 3
Copyright 2003
11-05-2003 REV A
WWW.Microsemi .COM
SCOTTSDALE DIVISION
1N4678 thru 1N4717-1 DO-7
1N4678 – 1N4717-1 4678 – 1N4717-1
GRAPHS
TEMPERATURE COEFFICIENT mV/oC
TEMPERATURE COEFFICIENT %/oC
RATED POWER DISSIPATION - mW
Voltage Temperature
Coefficient %/oC
mV Change /ºC
T
L – LEAD TEMPERATURE (oC) 3/8” FROM BODY or NOMINAL ZENER VOLTAGE (VOLTS)
TA on FR4 PC BOARD
FIGURE 1 FIGURE 2
POWER DERATING CURVE ZENER VOLTAGE TEMPERATURE
COEFFICIENT vs. ZENER VOLTAGE
DO-7 PACKAGE DIMENSIONS
All dimensions in: INCH
mm
Typical Capacitance in PicoFarads
ZENER VOLTAGE VZ
FIGURE 3
CAPACITANCE vs. VZ CURVE
