• 50
µ
A, LOW OPERATING CURRENT, ZENER DIODES
• DOUBLE PLUG CONSTRUCTION
• METALLURGICALLY BONDED
1N4678
thru
1N4717
MAXIMUM RATINGS
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
Power Dissipation: 500mW @ +50°C
DC Power Derating: 4 mW / °C above +50°C
Forward Voltage: 1.1 Volts maximum @ 200 mA
ELECTRICAL CHARACTERISTICS
@ 25°C, unless otherwise speci½ed.
CDI
TYPE
NUMBER
(Note 1)
VOLTS
1N4678
1N4679
1N4680
1N4681
1N4682
1N4683
1N4684
1N4685
1N4686
1N4687
1N4688
1N4689
1N4690
1N4691
1N4692
1N4693
1N4694
1N4695
1N4696
1N4697
1N4698
1N4699
1N4700
1N4701
1N4702
1N4703
1N4704
1N4705
1N4706
1N4707
1N4708
1N4709
1N4710
1N4711
1N4712
1N4713
1N4714
1N4715
1N4716
1N4717
1.8
2.0
2.2
2.4
2.7
3.0
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.2
6.8
7.5
8.2
8.7
9.1
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
22.0
24.0
25.0
27.0
28.0
30.0
33.0
36.0
39.0
43.0
NOMINAL
ZENER
VOLTAGE
VZ
ZENER
TEST
CURRENT
lZT
MAXIMUM
VOLTAGE
REGULATION
³VZ
(Note 2)
VOLTS
0.70
0.70
0.75
0.80
0.85
0.90
0.95
0.95
0.97
0.99
0.99
0.97
0.96
0.95
0.90
0.75
0.50
0.10
0.08
0.10
0.11
0.12
0.13
0.14
0.15
0.16
0.17
0.18
0.19
0.20
0.22
0.24
0.25
0.27
0.28
0.30
0.33
0.36
0.39
0.43
MAXIMUM REVERSE
LEAKAGE
CURRENT
lR @ VR
MAXIMUM
DC ZENER
CURRENT
lZM
mA
120.0
110.0
100.0
95.0
90.0
85.0
80.0
75.0
70.0
65.0
60.0
55.0
50.0
45.0
35.0
31.8
29.0
27.4
26.2
24.8
21.6
20.4
19.0
17.5
16.3
15.4
14.5
13.2
12.5
11.9
10.8
9.9
9.5
8.8
8.5
7.9
7.2
6.6
6.1
5.5
µ
A
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
µ
A
7.5
5.0
4.0
2.0
1.0
0.8
7.5
7.5
5.0
4.0
10.0
10.0
10.0
10.0
10.0
10.0
1.0
1.0
1.0
1.0
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
VOLTS
1.0
1.0
1.0
1.0
1.0
1.0
1.5
2.0
2.0
2.0
3.0
3.0
4.0
5.0
5.1
5.7
6.2
6.6
6.9
7.6
8.4
9.1
9.8
10.6
11.4
12.1
12.9
13.6
14.4
15.2
16.7
18.2
19.0
20.4
21.2
22.8
25.0
27.3
29.6
32.6
FIGURE 1
DESIGN DATA
CASE:
Hermetically sealed glass
case. DO – 35 outline.
LEAD MATERIAL:
Copper clad steel.
LEAD FINISH:
Tin / Lead
THERMAL RESISTANCE: (R
OJEC):
250
°
C/W maximum at L = .375 inch
THERMAL IMPEDANCE: (Z
OJX): 35
°
C/W maximum
POLARITY:
Diode to be operated with
the banded (cathode) end positive.
MOUNTING POSITION:
ANY.
NOTE 1
The JEDEC type numbers shown above have a standard tolerence of +5% of the
nominal Zener volume. VZ is measured with the diode in thermal equilibrium at
25°C + 3°C.
Vz @ 100
µ
A minus Vz @ 10
µ
A.
NOTE 2
6 LAKE STREET, LAWRENCE, MASSACHUSETTS 01841
PHONE (978) 620-2600
FAX (978) 689-0803
WEBSITE: http://www.microsemi.com
47
1N4678
Pd, Rated Power
Dissipation (mW)
500
400
300
200
100
0
0
25
50
thru
FIGURE 2
1N4717
75
100
125
150
175
TL, Lead temperature (C°) 3/8” from body
POWER DERATING CURVE
1000
500
400
300
200
ZENER IMPEDANCE ZZT (OHMS)
3.
3
VO
LT
27
100
VO
LT
5.
1
VO
LT
50
40
30
20
11
VO
LT
10
6.2
5
4
3
2
VO
LT
1
.1
.2 .3 .4 .5
1
2
5
10
20
30 40
50
100
OPERATING CURRENT lZT (mA)
FIGURE 3
ZENER IMPEDANCE VS. OPERATING CURRENT
48
51单片机
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