© Won-Top Electronics Co., Ltd.

www.wontop.com

Revision: September, 2012

1

Pb

Features



Planar Die Construction



500mW Power Dissipation

A



2.4V – 68V Nominal Zener Voltage



5% Standard Vz Tolerance

B



Ideally Suited for Automated Assembly



For Use in Voltage Stabilizer or Reference

C

Mechanical Data



Case: MiniMELF, Molded Glass



Terminals: Plated Leads Solderable per

MIL-STD-202, Method 208



Polarity: Cathode Band



Weight: 0.03 grams



Marking: Cathode Band Only



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

Peak Pulse Power Dissipation at TA = 25°C (Note 1)

PD

500

mW

Forward Voltage @ IF = 200mA

VF

1.1

V

Thermal Resistance Junction to Ambient (Note 1)

RθJA

0.3

°C/mW

Operating and Storage Temperature Range

TJ, TSTG

-55 to +175

°C

Note: 1. Mounted on ceramic substrate with minimum recommended pad layout.

ZMM5221B – ZMM5266B

500mW SURFACE MOUNT ZENER DIODE

WON-TOP ELECTRONICS

®

MiniMELF

Dim

Min

Max

A

3.30

3.70

B

1.30

1.60

C

0.28

0.50

All Dimensions in mm