30
CURRENT REGULATIVE DIODE
CRD
CRD is a diode which supplies constant
current to an electric circuit, even when
power supply voltage fluctuations or load
impedance fluctuations occur.
CRD is used for current stabilization and
current limiting.
1.8 0.2
0.5 0.1
1.35 0.1
0.3
Solder-plated
electrode
Solder-plated
electrode
(Cathode mark)
Band 1 Black
Band 3
Band 2
Glass sleeve
3.5
0.2
3.9
0.3
26
min.
Cathode
band
Anode
Cathode
Mark
Unit(mm)
F type
E type
100V
Voltage (V)
VB
10V
VK
VR
IR
IP
0.8 IP
Current
(mA)
Explanation of terms
IP :Pinch-off current at 10V
VK:Voltage which produces
0.8Ip or greater current
VB:Breakdown voltage
IR :Permitted reverse current
Basic characteristics
Taping
Specifications
There are three Types for taping.
Minimum taping quantity for
Type 1 Roll..........5000pcs
Box..........2500pcs
Type 2 4000pcs
Type 3 2500pcs
Maximum ratings
Maximum rating voltage
Rating power
Thermal resistance
Reverse current
Operating temp
E101L E-562
E-822
E-103
E-123
E-153
Voltage
100V
30
25
E type
300mW
300 C/ W
F type
400mW
150 C/ W
30 C 150 C
50mA
F101L F-562
F-822
F-103
F-123
F-153
Voltage
100V
50
42
34
28
Type 1
Type 3
20 0.5
0 2
3 0.5
6.35 0.5
26.3 0.5
13 2
5 0.8
12.7 0.3
4.0 0.3
0.2 0.05
1.7 0.1
4.0 0.1
2.0 0.05
18
Insulation
2.75 max.
1.0
0.5
1.5
0.1
0
Type 2
3
Pulling
direction
Part retaining
square hole
Feeding
round hole
8.0 0.3
1.75 0.1
3.5
0.05
3.7
0.1
Unit(mm)
*In principal elements are set with cathode side on the round
hole side.
5 0.5
6 0.1
1.2 max.
1 max.
L1
L1 L2
1.5
L2
26 or 52
*1,*2 Pinch-off current limiting current are measured by impulse wave at 25 C
*3 ZT is minimum AC impedance when small AC signal voltage of 10KHz is added tc 25 VDC bias. ZT is used as the reference value.
*4 Temperature coefficient is measured between 25 C and 50 C.
F-101L
F-101
F-301
F-501
F-701
F-102
F-152
F-202
F-272
F-352
F-452
F-562
F-822
F-103
F-123
F-153
E-101L
E-101
E-301
E-501
E-701
E-102
E-152
E-202
E-272
E-352
E-452
E-562
E-822
E-103
E-123
E-153
Light blue
Yellow green
Orange
White
Pink
Orange
Yellow green
Blue
Pink
Orange
Yellow green
Light blue
Blue
Purple
White
Yellow
Pink
White
Light blue
10V
1L
01
03
05
07
10
15
20
27
35
45
56
82
10
12
15
0.01 0.06
0.05 0.21
0.20 0.42
0.40 0.63
0.60 0.92
0.88 1.32
1.28 1.72
1.68 2.32
2.28 3.10
3.00 4.10
3.90 5.10
5.00 6.50
6.56 9.84
8.00 12.0
9.60 14.4
12.0 18.0
0.4
0.5
0.8
1.1
1.4
1.7
2.0
2.3
2.7
3.2
3.7
4.5
3.1
3.5
3.8
4.3
0.8lpmin.
8.00
6.00
4.00
2.00
1.00
0.65
0.40
0.25
0.15
0.10
0.07
0.04
0.32
0.17
0.08
0.03
1.1 max.
1.1max.
*1.0max.
2.10
0.10
2.10
0.10
0.40
0.20
0.15
0.25
0.00
0.32
0.10
0.37
0.13
0.40
0.15
0.42
0.18
0.45
0.20
0.47
0.22
0.50
0.25
0.53
0.25
0.45
0.25
0.45
0.25
0.45
0.25
0.45
Part No.
Indication
F type
Band 2
Band 3
E
Type
Pinch-off current*
1
Limiting current*
2
Dynamic*
3
impedance
ZT(M )
Temperature*
4
coefficient
(%/ C)
Limiting
current ratio
I100V/Ip*I30V/Ip
Test
Voltage
with
lead
less
Ip(mA)
VK(V)
IK(mA)