RD2.0ES~RD39ES
Zener diode
Features
1. DO-34 Glass sealed package
This diode can be inserted into a PC board
with a shorter pitch（5mm）
2. Planar process
3. Vz applied E24 standard
Applications
Circuits for constant voltage, constant current,
waveform clipper, surge absorber, etc.
Absolute Maximum Ratings
Tj=25℃
Parameter Symbol Value Unit
Forward Current If 150 mA
Power Dissipation PV 400 mW
Surge Reverse Power PRSM 100 W
Junction Temperature Tj 175 ℃
Storage Temperature Tstg -65~+175 ℃
RD2.0ES~RD39ES
Electrical Characteristics
Tj=25℃
Zener voltage Dynamic
Impedance
Knee Dynamic
Impedance
Reverse current
Vz (V) Zzt (Ω) Zzk (Ω) IR (μA)
Type
Number
Suffix
Min. Max. Iz (mA) Max. Min. Max. Iz (mA)
- 1.88 2.24
A 1.88 2.12
RD 2.0ES
B 2.01 2.24
5 100 5 1000 0.5 120 0.5
- 2.11 2.44
A 2.11 2.34
RD 2.2 ES
B 2.22 2.44
5 100 5 1000 0.5 120 0.7
- 2.32 2.65
A 2.32 2.54
RD 2.4 ES
B 2.41 2.65
5 100 5 1000 0.5 120 1.0
- 2.52 2.93
A 2.52 2.77
RD 2.7 ES
B 2.68 2.93
5 110 5 1000 0.5 100 1.0
- 2.84 3.24
A 2.84 3.08
RD 3.0 ES
B 2.99 3.24
5 120 5 1000 0.5 50 1.0
- 3.15 3.54
A 3.15 3.39
RD 3.3 ES
B 3.31 3.54
5 120 5 1000 0.5 20 1.0
- 3.46 3.84
A 3.46 3.69
RD 3.6 ES
B 3.60 3.84
5 120 5 1100 0.5 10 1.0
- 3.74 4.16
A 3.74 4.01
RD 3.9 ES
B 3.89 4.16
5 120 5 1200 0.5 5 1.0
- 4.04 4.57
A 4.04 4.29
B 4.17 4.43
RD 4.3 ES
C 4.30 4.57
5 120 5 1200 0.5 5 1.0
- 4.44 4.93
A 4.44 4.68
B 4.55 4.80
RD 4.7 ES
C 4.68 4.93
5 100 5 1200 0.5 5 1.0
- 4.81 5.37
A 4.81 5.07
B 4.94 5.20
RD 5.1 ES
C 5.09 5.37
5 70 5 1200 0.5 5 1.5
- 5.28 5.91
A 5.28 5.55
B 5.45 5.73
RD 5.6 ES
C 5.61 5.91
5 40 5 900 0.5 5 2.5
- 5.78 6.44
A 5.78 6.09
B 5.96 6.27
RD 6.2 ES
C 6.12 6.44
5 30 5 500 0.5 5 3.0
RD2.0ES~RD39ES
Zener voltage Dynamic
Impedance
Knee Dynamic
Impedance
Reverse current
Vz (V) Zzt (Ω) Zzk (Ω) IR (μA)
Type
Number
Suffix
Min. Max. Iz (mA) Max. Min. Max. Iz (mA)
- 6.29 7.01
A 6.29 6.63
B 6.49 6.83
RD 6.8 ES
C 6.66 7.01
5 25 5 150 0.5 2 3.5
- 6.85 7.67
A 6.85 7.22
B 7.07 7.45
RD 7.5 ES
C 7.29 7.67
5 25 5 120 0.5 0.5 4.0
- 7.53 8.45
A 7.53 7.92
B 7.78 8.19
RD 8.2 ES
C 8.03 8.45
5 20 5 120 0.5 0.5 5.0
- 8.29 9.30
A 8.29 8.73
B 8.57 9.01
RD 9.1 ES
C 8.83 9.30
5 20 5 120 0.5 0.5 6.0
- 9.12 10.39
A 9.12 9.65
B 9.46 10.02
RD 10 ES
C 9.82 10.39
5 20 5 120 0.5 0.2 7.0
- 10.18 11.38
A 10.18 10.71
B 10.50 11.05
RD 11 ES
C 10.82 11.38
5 20 5 120 0.5 0.2 8.0
- 11.13 12.35
A 11.13 11.71
B 11.44 12.03
RD 12 ES
C 11.74 12.35
5 25 5 110 0.5 0.2 9.0
- 12.11 13.66
A 12.11 12.75
B 12.55 13.21
RD 13 ES
C 12.99 13.66
5 25 5 110 0.5 0.2 10
- 13.44 15.09
A 13.44 14.13
B 13.89 14.62
RD 15 ES
C 14.35 15.09
5 25 5 110 0.5 0.2 11
- 14.80 16.51
A 14.80 15.57
B 15.25 16.04
RD 16 ES
C 15.69 16.51
5 25 5 150 0.5 0.2 12
- 16.22 18.33
A 16.22 17.06
B 16.82 17.70
RD 18 ES
C 17.42 18.33
5 30 5 150 0.5 0.2 13
RD2.0ES~RD39ES
Zener voltage Dynamic
Impedance
Knee Dynamic
Impedance
Reverse current
Vz (V) Zzt (Ω) Zzk (Ω) IR (μA)
Type
Number
Suffix
Min. Max. Iz (mA) Max. Min. Max. Iz (mA)
- 18.14 20.45
A 18.14 19.07
B 18.80 19.76
RD 20 ES
C 19.45 20.45
5 30 5 200 0.5 0.2 15
- 20.15 22.63
A 20.15 21.20
B 20.64 21.71
C 21.08 22.17
RD 22 ES
D 21.52 22.63
5 30 5 200 0.5 0.2 17
- 22.05 24.85
A 22.05 23.18
B 22.61 23.77
C 23.12 24.13
RD 24 ES
D 23.63 24.85
5 35 5 200 0.5 0.2 19
- 24.26 27.64
A 24.26 25.52
B 24.97 26.26
C 25.63 26.95
RD 27 ES
D 26.29 27.64
5 45 5 250 0.5 0.2 21
- 26.99 30.51
A 26.99 28.39
B 27.70 29.13
C 28.36 29.82
RD 30 ES
D 29.02 30.51
5 55 5 250 0.5 0.2 23
- 29.68 33.11
A 29.68 31.22
B 30.32 31.88
C 30.90 32.50
RD 33 ES
D 31.49 33.11
5 65 5 250 0.5 0.2 25
- 32.14 35.77
A 32.14 33.79
B 32.79 34.49
C 33.40 35.13
RD 36 ES
D 34.01 35.77
5 75 5 250 0.5 0.2 27
- 34.68 38.52
A 34.68 36.47
B 35.36 37.19
C 36.00 37.85
RD 39 ES
D 36.63 38.52
5 85 5 250 0.5 0.2 30
RD2.0ES~RD39ES
Characteristics
Iz-Zener Current-A
Iz-Zener Current-A
Iz-Zener Current-A
Vz-Zener Voltage-V Vz-Zener Voltage-V Vz-Zener Voltage-V
Figure 3. Zener current vs.
zener voltage
Figure 1. Zener current vs.
zener voltage
Figure 2. Zener current vs.
zener voltage
Iz-Zener Current-A
Iz-Zener Current-A
Vz-Zener Voltage-V Vz-Zener Voltage-V
Figure 4. Zener current vs.
zener voltage
Figure 5. Zener current vs.
zener voltage
RD2.0ES~RD39ES
Rth –Thermal Resistance - /w℃
P-Power Dissipation - mW
S – Size of P.C. Board –mm2 Ta-Ambient Temperature - ℃
Figure 6. Power dissipation vs.
ambient temperture
Figure 7. Thermal resistance vs.
size of P.C BOARD
Rz –Vz Temperature Coefficience - %/ ℃
Zz – Dynamic Impedance - Ω
Iz – Zener Current - mA Vz-Zener Voltage-V
Figure 8. Dynamic impedance vs.
zener current
Figure 9. Zener voltage temperature coefficient vs.
zener voltage
PRSM –Surge Reverse Power - W
tr – Pulse Width -s
Figure 10. Surge reverse power ratings
RD2.0ES~RD39ES
Zth – Transient Thermal
Impedance - /W℃
t – Time - s
Figure 11. Transient thermal impedance characteristic
Dimensions in mm
Cathode Anode
Cathode identification
1.8±0.2
0.4±0.1
29±1 29±1 2.7±0.3
Standard Glass Case
JEDEC DO 34
