Surface Mount Zener Diode SMC MMSZ5248B with 5 Percent Nominal Voltage and 500mW Power Dissipation

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Product Description

SMC MMSZ5221B-MMSZ5259B Zener Diodes

The MMSZ5221B-MMSZ5259B series are Zener diodes designed for surface mount applications. They feature a planar die construction, 500mW power dissipation, and a standoff voltage range from 2.4V to 39V with a 5% nominal Zener voltage. These diodes are constructed with plastic material that has a UL Recognition Flammability Classification 94V-O and are Halogen Free. The "-A" suffix denotes AEC-Q101 qualification. They are suitable for various applications requiring precise voltage regulation.

Product Attributes

Brand: SMC Diode Solutions
Product Series: MMSZ5221B-MMSZ5259B
Package Type: SOD-123
Material: Molded Plastic
Certifications: AEC-Q101 Qualified ("-A" suffix), UL Recognition Flammability Classification 94V-O, Halogen Free
Origin: China, Germany, Korea, Singapore, United States

Technical Specifications

Characteristic	Symbol	Value	Units	Notes
Power Dissipation	PD	500	mW	Device mounted on ceramic PCB; 7.6 mm x 9.4 mm x 0.87 mm with pad areas 25 mm².
Forward Voltage	VF	0.9	V	@ IF = 10mA, Tested with pulses, Tp1.0ms.
Thermal Resistance junction to Ambient Air	RJA	357	C/W
Operating Junction and Storage Temperature Range	TJ,TSTG	-55 to 150	C
Standoff Voltage		2.4 - 39	V
Nominal Zener Voltage Tolerance		5%

Mechanical Dimensions (SOD-123)

SYMBOL	Millimeters MIN.	Millimeters MAX.	Inches MIN.	Inches MAX.
A	1.050	1.250	0.041	0.049
A1	0.000	0.100	0.000	0.004
A2	1.050	1.150	0.041	0.045
b	0.450	0.650	0.018	0.026
c	0.080	0.150	0.003	0.006
D	1.500	1.700	0.059	0.067
E	2.600	2.800	0.102	0.110
E1	3.550	3.850	0.140	0.152
L	0.500 REF.		0.020 REF.
L1	0.250	0.450	0.010	0.018
	0	8	0	8