Semiconductor Components Industries, LLC, 2005
February, 2005 − Rev. 6 1Publication Order Number:
MMSZ4678T1/D
MMSZ4678T1 Series
Zener Voltage Regulators
500 mW SOD−123 Surface Mount
Three complete series of Zener diodes are offered in the convenient,
surface mount plastic SOD−123 package. These devices provide a
convenient alternative to the leadless 34−package style.
Features
•Pb−Free Packages are Available
For Additional Pb−Free Options, Please Consult Factory
•500 mW Rating on FR−4 or FR−5 Board
•Wide Zener Reverse Voltage Range − 1.8 V to 43 V
•Package Designed for Optimal Automated Board Assembly
•Small Package Size for High Density Applications
•ESD Rating of Class 3 (>16 kV) per Human Body Model
Mechanical Characteristics
CASE: Void-free, transfer-molded, thermosetting plastic case
FINISH: Corrosion resistant finish, easily solderable
MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES:
260°C for 10 Seconds
POLARITY: Cathode indicated by polarity band
FLAMMABILITY RATING: UL 94 V−0
MAXIMUM RATINGS
Rating Symbol Max Unit
Total Power Dissipation on FR−5 Board,
(Note 1) @ TL = 75°C
Derated above 75°C
PD500
6.7 mW
mW/°C
Thermal Resistance, (Note 2)
Junction−to−Ambient RJA 340 °C/W
Thermal Resistance, (Note 2)
Junction−to−Lead RJL 150 °C/W
Junction and Storage Temperature Range TJ, Tstg −55 to
+150 °C
Maximum ratings are those values beyond which device damage can occur.
Maximum ratings applied to the device are individual stress limit values (not
normal operating conditions) and are not valid simultaneously. If these limits
are exceeded, device functional operation is not implied, damage may occur
and reliability may be affected.
1. FR−5 = 3.5 X 1.5 inches, using the minimum recommended footprint.
2. Thermal Resistance measurement obtained via infrared Scan Method.
Device** Package Shipping†
ORDERING INFORMATION
1
Cathode 2
Anode
MMSZ4xxxT1 SOD−123 3000/Tape & Reel
See specific marking information in the device marking
column o f the Electrical Characteristics table on page 3 of this
data sheet.
DEVICE MARKING INFORMATION
xxx = Specific Device Code
M = Date Code
**The “T1” suffix refers to an 8 mm, 7 inch reel.
The “T3” suffix refers to an 8 mm, 13 inch reel.
MMSZ4xxxT3 SOD−123 10,000/Tape & Reel
Devices listed in
bold, italic
are ON Semiconductor
Preferred devices. Preferred devices are recommended
choices for future use and best overall value.
MMSZ4xxxT1G SOD−123
(Pb−Free) 3000/Tape & Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
MMSZ4xxxT3G SOD−123
(Pb−Free) 10,000/Tape & Reel
http://onsemi.com
SOD−123
CASE 425
STYLE 1
MARKING DIAGRAM
1
2
ÂÂ
ÂÂ
ÂÂ
*MMSZ4703 and MMSZ4711 Not Available in
10,000/Tape & Reel
xx M
MMSZ4678T1 Series
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2
ELECTRICAL CHARACTERISTICS (TA = 25°C unless
otherwise noted, VF = 0.95 V Max. @ IF = 10 mA)
Symbol Parameter
VZReverse Zener Voltage @ IZT
IZT Reverse Current
IRReverse Leakage Current @ VR
VRReverse Voltage
IFForward Current
VFForward Voltage @ IF
Zener Voltage Regulator
IF
V
I
IR
IZT
VR
VZVF
MMSZ4678T1 Series
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3
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted, VF = 0.9 V Max. @ IF = 10 mA)
Zener Voltage (Note 3) Leakage Current
Device
VZ (Volts) @ IZT IR @ VR
Device
Device
Marking Min Nom Max AA Volts
MMSZ4678T1, G CC 1.71 1.8 1.89 50 7.5 1
MMSZ4679T1, G CD 1.90 2.0 2.10 50 5 1
MMSZ4680T1, G CE 2.09 2.2 2.31 50 4 1
MMSZ4681T1, G CF 2.28 2.4 2.52 50 2 1
MMSZ4682T1, G CH 2.565 2.7 2.835 50 1 1
MMSZ4683T1 CJ 2.85 3.0 3.15 50 0.8 1
MMSZ4684T1, G CK 3.13 3.3 3.47 50 7.5 1.5
MMSZ4685T1, G CM 3.42 3.6 3.78 50 7.5 2
MMSZ4686T1 CN 3.70 3.9 4.10 50 5 2
MMSZ4687T1, G CP 4.09 4.3 4.52 50 4 2
MMSZ4688T1 CT 4.47 4.7 4.94 50 10 3
MMSZ4689T1, G CU 4.85 5.1 5.36 50 10 3
MMSZ4690T1, G CV 5.32 5.6 5.88 50 10 4
MMSZ4691T1 CA 5.89 6.2 6.51 50 10 5
MMSZ4692T1, G CX 6.46 6.8 7.14 50 10 5.1
MMSZ4693T1 CY 7.13 7.5 7.88 50 10 5.7
MMSZ4694T1 CZ 7.79 8.2 8.61 50 1 6.2
MMSZ4695T1, G DC 8.27 8.7 9.14 50 1 6.6
MMSZ4696T1, G DD 8.65 9.1 9.56 50 1 6.9
MMSZ4697T1, G DE 9.50 10 10.50 50 1 7.6
MMSZ4698T1 DF 10.45 11 11.55 50 0.05 8.4
MMSZ4699T1, G DH 11.40 12 12.60 50 0.05 9.1
MMSZ4700T1 DJ 12.35 13 13.65 50 0.05 9.8
MMSZ4701T1 DK 13.30 14 14.70 50 0.05 10.6
MMSZ4702T1, G DM 14.25 15 15.75 50 0.05 11.4
MMSZ4703T1, G* DN 15.20 16 16.80 50 0.05 12.1
MMSZ4704T1 DP 16.15 17 17.85 50 0.05 12.9
MMSZ4705T1 DT 17.10 18 18.90 50 0.05 13.6
MMSZ4706T1 DU 18.05 19 19.95 50 0.05 14.4
MMSZ4707T1 DV 19.00 20 21.00 50 0.01 15.2
MMSZ4708T1 DA 20.90 22 23.10 50 0.01 16.7
MMSZ4709T1, G DX 22.80 24 25.20 50 0.01 18.2
MMSZ4710T1, G DY 23.75 25 26.25 50 0.01 19.0
MMSZ4711T1* EA 25.65 27 28.35 50 0.01 20.4
MMSZ4712T1 EC 26.60 28 29.40 50 0.01 21.2
MMSZ4713T1, G ED 28.50 30 31.50 50 0.01 22.8
MMSZ4714T1 EE 31.35 33 34.65 50 0.01 25.0
MMSZ4715T1 EF 34.20 36 37.80 50 0.01 27.3
MMSZ4716T1 EH 37.05 39 40.95 50 0.01 29.6
MMSZ4717T1, G EJ 40.85 43 45.15 50 0.01 32.6
3. Nominal Zener voltage is measured with the device junction in thermal equilibrium at TL = 30°C ±1°C.
*Not Available in the 10,000/Tape & Reel.
**The “G” suffix indicates Pb−Free package available.
MMSZ4678T1 Series
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4
TYPICAL CHARACTERISTICS
VZ, TEMPERATURE COEFFICIENT (mV/ C)°θ
VZ, NOMINAL ZENER VOLTAGE (V)
−3
−2
−1
0
1
2
3
4
5
6
7
8
1211
10
98765432
Figure 1. Temperature Coefficients
(Temperature Range −55°C to +150°C)
TYPICAL TC VALUES
VZ @ IZT
VZ, TEMPERATURE COEFFICIENT (mV/ C)°θ
100
10
110 100
VZ, NOMINAL ZENER VOLTAGE (V)
Figure 2. Temperature Coefficients
(Temperature Range −55°C to +150°C)
VZ @ IZT
1.2
1.0
0.8
0.6
0.4
0.2
01501251007550250
T, TEMPERATURE (5C)
Figure 3. Steady State Power Derating
PD versus TA
PD versus TL
Ppk, PEAK SURGE POWER (WATTS)
0.1
PW, PULSE WIDTH (ms)
Figure 4. Maximum Nonrepetitive Surge Power
1 10 100 1000
1000
100
10
1
RECTANGULAR
WAVEFORM, TA = 25°C
100
VZ, NOMINAL ZENER VOLTAGE
Figure 5. Effect of Zener Voltage on
Zener Impedance
101
ZZT, DYNAMIC IMPEDANCE ( )Ω
1000
100
10
1
TJ = 25°C
IZ(AC) = 0.1 IZ(DC)
f = 1 kHz
IZ = 1 mA
5 mA
20 mA
VF, FORWARD VOLTAGE (V)
Figure 6. Typical Forward Voltage
1.21.11.00.90.80.70.60.5
0.4
IF, FORWARD CURRENT (mA)
1000
100
10
1
75 V (MMSZ5267BT1)
91 V (MMSZ5270BT1)
150°C75°C 25°C 0°C
TYPICAL TC VALUES
PD, POWER DISSIPATION (WATTS)
MMSZ4678T1 Series
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5
TYPICAL CHARACTERISTICS
C, CAPACITANCE (pF)
100
VZ, NOMINAL ZENER VOLTAGE (V)
Figure 7. Typical Capacitance
1000
100
10
1101
BIAS AT
50% OF VZ NOM
TA = 25°C
0 V BIAS
1 V BIAS
12
VZ, ZENER VOLTAGE (V)
100
10
1
0.1
0.01 1086420
TA = 25°C
IZ, ZENER CURRENT (mA)
VZ, ZENER VOLTAGE (V)
100
10
1
0.1
0.0110 30 50 70 90
TA = 25°C
IR, LEAKAGE CURRENT ( A)µ
90
VZ, NOMINAL ZENER VOLTAGE (V)
Figure 8. Typical Leakage Current
1000
100
10
1
0.1
0.01
0.001
0.0001
0.00001 80706050403020100
+150°C
+25 °C
−55 °C
IZ, ZENER CURRENT (mA)
Figure 9. Zener Voltage versus Zener Current
(VZ Up to 12 V) Figure 10. Zener Voltage versus Zener Current
(12 V to 91 V)
MMSZ4678T1 Series
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6
PACKAGE DIMENSIONS
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
STYLE 1:
PIN 1. CATHODE
2. ANODE
ÂÂÂ
ÂÂÂ
B
D
K
AC
E
J
1
2
H
DIM MIN MAX MIN MAX
MILLIMETERSINCHES
A0.055 0.071 1.40 1.80
B0.100 0.112 2.55 2.85
C0.037 0.053 0.95 1.35
D0.020 0.028 0.50 0.70
E0.01 −−− 0.25 −−−
H0.000 0.004 0.00 0.10
J−−− 0.006 −−− 0.15
K0.140 0.152 3.55 3.85
SOD−123
CASE 425−04
ISSUE C
1.22
0.048
ÉÉÉ
ÉÉÉ
ÉÉÉ
ÉÉÉ
0.91
0.036
2.36
0.093
4.19
0.165
mm
inches
SCALE 10:1
ÉÉÉ
ÉÉÉ
ÉÉÉ
ÉÉÉ
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
SOLDERING FOOTPRINT*
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to any products herein. SCILLC makes no warranty , representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
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“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
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MMSZ4678T1/D
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