© Won-Top Electronics Co., Ltd.

www.wontop.com

Revision: October, 2018

1

Pb

Features



Planar Die Construction



500mW Power Dissipation

A



2.4V – 51V Nominal Zener Voltage



5% Standard Vz Tolerance



Designed for Surface Mount Application

C



Plastic Material – UL Recognition Flammability

D

Classification 94V-0

B

E

Mechanical Data

H



Case: SOD-123, Molded Plastic

G



Terminals: Plated Leads Solderable per

J

MIL-STD-202, Method 208



Polarity: Cathode Band



Weight: 0.01 grams (approx.)



Marking: Device Code



Lead Free: For RoHS / Lead Free Version,

Add “-LF” Suffix to Part Number, See Page 5

Maximum Ratings @T

A=25°C unless otherwise specified

Characteristic

Symbol

Value

Unit

Power Dissipation at TL = 75°C (Note 1)

PD

500

mW

Forward Voltage @ IF = 10mA

VF

0.9

V

Thermal Resistance, Junction to Ambient (Note 2, 3)

Thermal Resistance, Junction to Lead (Note 2, 3)

RθJA

RθJL

340

150

°C/W

Operating and Storage Temperature Range

TJ, TSTG

-65 to +150

°C

Note: 1. Mounted on FR-4 PCB with minimum recommended pad layout.

2. Thermal resistance measurement obtained via infrared scan method.

MMSZ5221B – MMSZ5262B

500mW SURFACE MOUNT ZENER DIODE

WON-TOP ELECTRONICS

®

SOD-123

Dim

Min

Max

A

3.60

3.90

B

2.50

2.80

C

1.40

1.80

D

0.30

0.78

E

—

0.25

G

0.15

—

H

0.95

1.35

J

—

0.15

All Dimensions in mm