MRD2.0S~MRD75S
Excel Semiconductor
www.excel-semi.com Rev. 3e, 1-Nov-2006
FaxBack +86-512-66607370 1/4
Zener diode
Features
1. Saving space
2. Fits onto SOD 323/SOT 23 footprints
3. Micro Melf package
Applications
Circuits for constant voltage, constant current,
waveform clipper, surge absorber, etc.
Absolute Maximum Ratings
Tj=25℃ Parameter Symbol Value Unit
Forward Current IF 100 mA
Power Dissipation PV 200 mW
Surge Reverse Power PRSM 85 W
Junction Temperature Tj 150 ℃
Storage Temperature Tstg -55~+150 ℃
Stresses exceeding maximum ratings may damage the device. Maximum ratings are stress ratings only. Functional operation above the
recommended operating conditions is not implied. Extended exposure to stresses above the recommended operating conditions may
affect device reliability.
MRD2.0S~MRD75S
Excel Semiconductor
www.excel-semi.com Rev. 3e, 1-Nov-2006
FaxBack +86-512-66607370 2/4
Electrical Characteristics
Tj=25℃ Zener voltage Dynamic
Impedance Zener voltage
Temp. coefficient Reverse current
Vz (V) Zzt (Ω) γZ (mV/℃) IR (μA)
Type
Number
Suffix
Min. Max. Iz (mA) Max. Iz (mA) TYP. Iz (mA) Max. VR (V)
MRD 2.0S B 1.90 2.20 5 100 5 -1.0 5 120 0.5
MRD 2.2 S B 2.10 2.40 5 100 5 -1.5 5 120 0.7
MRD 2.4 S B 2.30 2.60 5 100 5 -1.5 5 120 1.0
B 2.50 2.90
B1 2.50 2.75
MRD 2.7 S B2 2.65 2.90 5 110 5 -1.5 5 100 1.0
B 2.80 3.20
B1 2.80 3.05
MRD 3.0 S B2 2.95 3.20 5 120 5 -2.0 5 50 1.0
B 3.10 3.50
B1 3.10 3.35
MRD 3.3 S B2 3.25 3.50 5 130 5 -2.0 5 20 1.0
B 3.40 3.80
B1 3.40 3.65
MRD 3.6 S B2 3.55 3.80 5 130 5 -2.0 5 10 1.0
B 3.70 4.10
B1 3.70 3.97
MRD 3.9 S B2 3.87 4.10 5 130 5 -2.0 5 10 1.0
B 4.00 4.49
B1 4.00 4.22
B2 4.14 4.35
MRD 4.3 S
B3 4.27 4.49
5 130 5 -1.5 5 10 1.0
B 4.40 4.92
B1 4.40 4.63
B2 4.53 4.77
MRD 4.7 S
B3 4.67 4.92
5 130 5 -1.0 5 10 1.0
B 4.82 5.39
B1 4.82 5.06
B2 4.96 5.22
MRD 5.1 S
B3 5.12 5.39
5 130 5 0 5 5 1.5
B 5.29 5.94
B1 5.29 5.57
B2 5.47 5.75
MRD 5.6 S
B3 5.65 5.94
5 80 5 1.0 5 5 2.5
B 5.84 6.55
B1 5.84 6.14
B2 6.04 6.35
MRD 6.2 S
B3 6.24 6.55
5 50 5 2.5 5 2 3.0
MRD2.0S~MRD75S
Excel Semiconductor
www.excel-semi.com Rev. 3e, 1-Nov-2006
FaxBack +86-512-66607370 3/4
Zener voltage Dynamic
Impedance Zener voltage
Temp. coefficient Reverse current
Vz (V) Zzt (Ω) γZ (mV/℃) IR (μA)
Type
Number
Suffix
Min. Max. Iz (mA) Max. Iz (mA) TYP. Iz (mA) Max. VR (V)
B 6.44 7.17
B1 6.44 6.76
B2 6.62 6.96
MRD 6.8 S
B3 6.83 7.17
5 30 5 3.0 5 2 3.5
B 7.03 7.87
B1 7.03 7.39
B2 7.25 7.63
MRD 7.5 S
B3 7.49 7.87
5 30 5 3.5 5 2 4.0
B 7.73 8.67
B1 7.73 8.13
B2 7.98 8.39
MRD 8.2 S
B3 8.25 8.67
5 30 5 4.0 5 2 5.0
B 8.53 9.58
B1 8.53 8.96
B2 8.81 9.26
MRD 9.1 S
B3 9.12 9.58
5 30 5 5.0 5 2 6.0
B 9.42 10.58
B1 9.42 9.90
B2 9.74 10.24
MRD 10 S
B3 10.08 10.58
5 30 5 6.0 5 2 7.0
B 10.40 11.60
B1 10.40 10.92
B2 10.72 11.26
MRD 11 S
B3 11.06 11.60
5 30 5 7.0 5 2 8.0
B 11.38 12.64
B1 11.38 11.94
B2 11.69 12.28
MRD 12 S
B3 12.04 12.64
5 35 5 8.0 5 2 9.0
MRD 13 S B 12.43 14.00 5 35 5 9 5 2 10
MRD 15 S B 13.80 15.56 5 40 5 10 5 2 11
MRD 16 S B 15.31 17.14 5 40 5 12 5 2 12
MRD 18 S B 16.89 19.08 5 45 5 13 5 2 13
MRD 20 S B 18.80 21.14 5 50 5 15 5 2 15
MRD 22 S B 20.81 23.25 5 55 5 17 5 2 17
MRD 24 S B 22.86 25.66 5 60 5 20 5 2 19
MRD 27 S B 25.10 28.90 2 70 2 22 2 2 21
MRD 30 S B 28.00 32.00 2 80 2 26 2 2 23
MRD 33 S B 31.00 35.00 2 80 2 29 2 2 25
MRD 36 S B 34.00 38.00 2 90 2 32 2 2 27
MRD 39 S B 37.00 41.00 2 100 2 36 2 2 30
MRD 43S B 40.00 45.00 2 130 2 - - 2 33
MRD 47S B 44.00 49.00 2 150 2 - - 2 36
MRD 51S B 48.00 54.00 2 180 2 - - 1 39
MRD 56S B 53.00 60.00 2 180 2 - - 1 43
MRD 62S B 58.00 66.00 2 200 2 - - 0.2 47
MRD 68S B 64.00 72.00 2 250 2 - - 0.2 52
MRD 75S B 70.00 79.00 2 300 2 - - 0.2 57
MRD2.0S~MRD75S
Excel Semiconductor
www.excel-semi.com Rev. 3e, 1-Nov-2006
FaxBack +86-512-66607370 4/4
Dimensions in mm
Glass Case
Micro Melf
1.9±0.1
Φ1.25±0.05
R≥2.5
1.35
Glass
Glass
Cathode identification
