MMSZ5255B
onsemiExtended
-55℃~+150℃ 1 Independent 100nA@21V 26.6V~29.4V 28V 44Ω 500mW 600Ω SOD-123 Zener Diodes ROHS
- Part id
- onsemi/MMSZ5255B
- Category
- Zener Diodes
- Package
- SOD-123
- Pins
- 5
- In stock
- 1,503 at JLCPCB (C242284)
Overview
The MMSZ5255B is a zener Diode made by onsemi in a SOD-123 package with 2 pins. -55℃~+150℃ 1 Independent 100nA@21V 26.6V~29.4V 28V 44Ω 500mW 600Ω 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. 1,503 are in stock at JLCPCB (part C242284).
Symbol
Footprint
From the datasheet
3- Junction, hottest
- 150 °C · TJ, absolute maximum · p. 1
- Junction to air (SOD−123)
- 340 K/W · junction to ambient, max; infrared scan measurement · p. 1
- Forward voltage
- 900 mV · VF, 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
- Zener voltage tolerance
- ±5% · p. 3
- Lead-free
- Pb−Free · p. 1
Specifications
11| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Total Power Dissipation on FR−5 Board PD | TL = 75°C; FR−5 = 3.5 X 1.5 inches, using the minimum recommended footprint | max 500 mW | 1 |
| Derated above 75°C PD | FR−5 board; TL above 75°C | max 6.7 mW/°C | 1 |
| Thermal Resistance, Junction−to−Ambient RqJA | SOD−123; Thermal Resistance measurement obtained via infrared Scan Method | max 340 °C/W | 1 |
| Thermal Resistance, Junction−to−Lead RqJL | SOD−123; Thermal Resistance measurement obtained via infrared Scan Method | max 150 °C/W | 1 |
| Junction and Storage Temperature Range TJ, Tstg | min -55 · max 150 °C | 1 | |
| Forward Voltage @ IF VF | TA = 25°C; IF = 10 mA | max 0.95 V | 2 |
| Forward Voltage @ IF VF | MMSZ5255BT1G; TA = 25°C; IF = 10 mA | max 0.9 V | 3 |
| Zener Voltage (Notes 3 and 4) VZ | MMSZ5255BT1G; IZT = 4.5 mA; junction in thermal equilibrium at TL = 30°C ±1°C; typ field represents nominal | min 26.6 · typ 28 · max 29.4 Volts | 3 |
| Maximum Zener Impedance @ IZT ZZT | MMSZ5255BT1G; TA = 25°C; IZT = 4.5 mA; IZ(AC) = 0.1 IZ(dc); AC frequency = 1 kHz | max 44 W | 3 |
| Maximum Zener Impedance @ IZK ZZK | MMSZ5255BT1G; TA = 25°C; IZK = 0.25 mA; IZ(AC) = 0.1 IZ(dc); AC frequency = 1 kHz | max 600 W | 3 |
| Reverse Leakage Current @ VR IR | MMSZ5255BT1G; TA = 25°C; VR = 21 Volts | max 0.1 mA | 3 |
Pins, by the datasheet
2- 1 CATHODE
- Cathode; indicated by polarity band. · p. 7
- 2 ANODE
- Anode. · p. 7
Ordering codes, by the datasheet
1- MMSZ5255BT1G
- SOD−123 · 28 V nominal Zener voltage, ±5% tolerance; 3,000 / Tape & Reel · p. 3
Parts like it
8
LMSZ5255BT1G
SOD-123Zener DiodesLeshan Radio (LRC)SZMMSZ5255B
SOD-123-55℃~+150℃ 1 Independent 100nA@21V 26.6V~29.4V 28V 44Ω 500mW 600Ω SOD-123 Zener Diodes ROHSonsemiZener DiodesCMHZ5255B TR PBFREE
SOD-1231 Independent 100nA@21V 26.6V~29.4V 28V 44Ω 500mW 600Ω SOD-123 Zener Diodes ROHSCentral SemiconZener DiodesMMSZ4712-TP
SOD-123-55℃~+150℃ 1 Independent 10nA@21.2V 26.6V~29.4V 28V 500mW ±5% SOD-123 Zener Diodes ROHSMicro Commercial ComponentsZener DiodesMMSZ5255BHE3-TP
SOD-123Zener DiodesMicro Commercial ComponentsMMSZ5255C-TP
SOD-123SOD-123 Zener Diodes ROHSMicro Commercial ComponentsZener DiodesMMSZ5255E
SOD-123-55℃~+150℃ 1 Independent 100nA@21V 26.6V~29.4V 28V 44Ω 500mW 600Ω ±5% SOD-123 Zener Diodes ROHSonsemiZener DiodesMMSZ4712-G3-08
SOD-123Zener DiodesVishay Intertechnology
Questions
Is there a KiCad symbol and footprint for the MMSZ5255B?
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 MMSZ5255B?
SOD-123, with 2 pins. Its footprint is drawn on this page.
Where is the MMSZ5255B datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the MMSZ5255B?
JLCPCB lists it as part C242284, with 1,503 in stock; the sellers' links on this page open their listings.
What can replace the MMSZ5255B?
Parts like it in the library: the LMSZ5255BT1G by Leshan Radio (LRC), the SZMMSZ5255B by onsemi, the CMHZ5255B TR PBFREE by Central Semicon and the MMSZ4712-TP by Micro Commercial Components. Check their datasheets: a part that fits the footprint may still differ in its ratings.