Page 1
Formosa MS
1
2
2
2
2
3
4~5
6
6
7
8
8
9
List
List.................................................................................................
Package outline...............................................................................
Features..........................................................................................
Mechanical data...............................................................................
Maximum ratings .............................................................................
Electrical characteristics...................................................................
Rating and characteristic curves........................................................
Pinning information...........................................................................
Suggested solder pad layout.............................................................
Packing information..........................................................................
Reel packing....................................................................................
Suggested thermal profiles for soldering processes.............................
High reliability test capabilities...........................................................
MMSZ5221B THRU MMSZ5267B
SMD Zener Diode
Document ID Issued Date Revised Date Revision Page.
DS-221715 2008/02/10 2019/02/26 E 9
http://www.formosams.com
TEL:886-2-22696661
FAX:886-2-22696141
Features
Up to 500mW power dissipation
Silicon epitaxial planar chip structure
Wide zener voltage range selection, 2.4V to 75V
Small package size for high density applications
Ideally suited for automated assembly processes
Lead-free parts meet RoHS requirements
Suffix "-H" indicates Halogen free parts, ex. MMSZ5221B-H
Package outline
Page 2
500mW Surface Mount
Zener Diodes 2.4V-75V
Formosa MS
Parameter
Conditions Symbol
V
F
PD
MIN. TYP. MAX.
0.9
500
Unit
V
mW
Storage temperature range
Operating junction temperature range
T
STG
TJ
-55
-55
+150
+150
o
C
o
C
Maximum ratings (at T =25 C unless otherwise noted)
A
o
Forward voltage
Power dissipation (Note 1)
I =10mAF
SMD Zener Diode
Dimensions in inches and (millimeters)
SOD-123F
0.053(1.35)
0.037(0.95)
0.110(2.80)
0.098(2.50)
0.071(1.80)
0.055(1.40)
0.028(0.70)
0.019(0.50)
0.154(3.90)
0.141(3.60)
0.008(0.20)MAX
Mechanical data
Epoxy:UL94-V0 rated flame retardant
Case : Molded plastic, SOD-123F
Terminals : Solder plated, solderable per
MIL-STD-750, Method 2026
Polarity : Indicated by cathode band
Mounting Position : Any
Weight : Approximated 0.010 gram
Document ID Issued Date Revised Date Revision Page.
Thermal resistance (Note 2)
Junction to ambient R
θJA
340
150Junction to lead R
θJL
200Junction to case R
θJC
o
C/W
C/W
o
C/W
o
On FR-5 Board @T =75 CL
o
1. FR−5 = 3.5 x 1.5 inches, using the minimum recommended footprint.
2. Thermal resistance measurement obtained via infrared scan method.
MMSZ5221B THRU MMSZ5267B
DS-221715 2008/02/10 2019/02/26 E 9
http://www.formosams.com
TEL:886-2-22696661
FAX:886-2-22696141