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MMSZ4685, in 3D

MMSZ4685

onsemi

-55℃~+150℃ 3.42V~3.78V 3.6V 500mW 7.5uA@2V Independent SOD-123 Zener Diodes ROHS

Extended
DatasheetJLCPCBLCSConsemi/MMSZ4685
Category
Zener Diodes
Package
SOD-123
Pins
2

Overview

The MMSZ4685 is a zener Diode made by onsemi in a SOD-123 package with 2 pins. -55℃~+150℃ 3.42V~3.78V 3.6V 500mW 7.5uA@2V Independent SOD-123 Zener Diodes ROHS.

PCBKit's library has its KiCad symbol (Device:D_Zener, from KiCad's library) and its footprint (Diode_SMD:D_SOD-123, from KiCad's library), ready for a KiCad board. 7,441 are in stock at JLCPCB (part C66886). 2 open-source boards in 1 repository on GitHub use it.

Symbol

Device:D_ZenerFrom KiCad's library

Footprint

12
Diode_SMD:D_SOD-123From KiCad's library

From the datasheet

3
Junction, hottest
150 °C · maximum junction temperature · p. 1
Junction to air (SOD−123)
340 K/W · junction-to-ambient thermal resistance · p. 1
Forward voltage
900 mV · max at IF = 10 mA, TA = 25°C · p. 3

What it is and has

4
Power rating
500 mW on FR−4 or FR−5 board · p. 1
ESD rating
Class 3 (> 16 kV), Human Body Model · p. 1
Compliance
Pb−Free and RoHS compliant · p. 1
Flammability rating
UL 94 V−0 · p. 1

Specifications

10
ParameterConditionsAs printedPage
Total Power Dissipation on FR−5 Board PDNote 1, TL = 75°Cmax 500 mW1
Derated above 75°C PDFR−5 boardmax 6.7 mW/°C1
Thermal Resistance, Junction−to−Ambient RqJASOD−123; Note 2max 340 °C/W1
Thermal Resistance, Junction−to−Lead RqJLSOD−123; Note 2max 150 °C/W1
Junction and Storage Temperature Range TJ, TstgLower endpointmin -55 °C1
Junction and Storage Temperature Range TJ, TstgUpper endpointmax 150 °C1
Forward Voltage @ IF VFTA = 25°C; IF = 10 mAmax 0.9 V3
Zener Voltage (Note 3) VZMMSZ4685T1G; IZT = 50 mA as printed; nominal voltage measured at TL = 30°C ±1°C in thermal equilibriummin 3.42 · typ 3.6 · max 3.78 Volts3
Reverse Current IZTMMSZ4685T1G; Zener voltage test currenttyp 50 mA3
Leakage Current IRMMSZ4685T1G; VR = 2 Volts; TA = 25°Cmax 7.5 mA3

Pins, by the datasheet

2
1 CATHODE
Cathode, indicated by polarity band. · p. 6
2 ANODE
Anode. · p. 6

Ordering codes, by the datasheet

1
MMSZ4685T1G
SOD−123 · 3.6 V nominal Zener voltage; marking CM; Pb−Free; 3,000/Tape & Reel · p. 3

Parameters

9
Diode Configuration
1 Independent
Junction Temperature(Max)
150℃
Operating Junction Temperature Range
-55℃~+150℃
Pd - Power Dissipation
500mW
Reverse Leakage Current (Ir)
7.5uA@2V
Thermal Resistance(Junction to Ambient)
340℃/W
Voltage - Forward(Vf)
900mV
Zener Voltage(Nom)
3.6V
Zener Voltage(Range)
3.42V~3.78V

Order codes

1

Pinout

2
The pins of the MMSZ4685
PinNameType
1KPassive
2APassive

Open-source boards using it

All 2

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Questions

Is there a KiCad symbol and footprint for the MMSZ4685?

Yes. The symbol is Device:D_Zener and the footprint Diode_SMD:D_SOD-123, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the MMSZ4685?

SOD-123, with 2 pins. Its footprint is drawn on this page.

Where is the MMSZ4685 datasheet?

onsemi publishes it: the Datasheet link on this page opens it.

Where can I order the MMSZ4685?

JLCPCB lists it as part C66886, with 7,441 in stock; the sellers' links on this page open their listings.

What can replace the MMSZ4685?

Parts like it in the library: the MM1W3V6 by hongjiacheng, the BZT52C3V6 by MDD, the BZT52C3V6 by TWGMC and the MM1Z3V6 by hongjiacheng. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the MMSZ4685?

2 boards in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8