الصفحة الرئيسية > أجهزة أشباه الموصلات المنفصلة > ترانزستورات ثنائية القطب معزولة البوابة (IGBT) > MMSZ5228B-7-F

MMSZ5228B-7-F

3.3V Zener diode, 5%, 500mW, SOD-123, voltage regulation/reference

11785

المخزون الفعال

انتقل إلى الاستفسار

Image for reference only

جزء الشركة المصنعة ： جزء الشركة المصنعة

MMSZ5228B-7-F

الحزمة ： الحزمة

SOD-123 (2.65 x 1.60 x 0.90 mm)

الوصف

نظرة عامة على المنتج

The MMSZ5228B-7-F from Diodes Incorporated is a 3.3 V Zener diode in a SOD-123 package. Part of the MMSZ52xxB series, it provides 3.3 V nominal regulation with 5% tolerance and 500 mW power dissipation, suitable for voltage regulation and reference applications in space-constrained circuits.

المواصفات الرئيسية

Zener Voltage (VZ)	3.3 V (nominal), 3.14-3.47 V (range)
Tolerance	5% (B suffix)
تبديد الطاقة	500 mW
ZZT (impedance)	28 Ω @ IZT = 20 mA
Leakage Current	5 µA @ VR = 1 V
الحزمة	SOD-123

الميزات

3.3 V nominal Zener voltage with 5% tolerance
500 mW power dissipation in compact SOD-123
Low Zener impedance of 28 Ω at 20 mA
Pb-Free and RoHS compliant
Wide operating temperature range

التطبيقات

Voltage regulation and clamping
Voltage reference for comparators
ESD protection for 3.3 V logic
Overvoltage protection
Signal level shifting and clamping

مقدمة المنتج:MMSZ5228B-7-F مقدمة المنتج

The MMSZ5228B-7-F from Diodes Incorporated is a 3.3 V nominal Zener diode in a compact SOD-123 surface-mount package. The B suffix indicates 5% voltage tolerance with a Zener voltage range of 3.14 V to 3.47 V at IZT = 20 mA. The device provides 500 mW maximum power dissipation with a low dynamic impedance of 28 Ω at the test current, making it suitable for basic voltage regulation and reference applications in 3.3 V logic systems. The SOD-123 package offers a smaller footprint than the traditional SOD-80/MiniMELF while maintaining adequate thermal performance for the 500 mW rating. Pb-Free and RoHS compliant. The -7-F suffix indicates 7-inch tape and reel packaging for automated assembly.

مبدأ العمل:MMSZ5228B-7-F مبدأ العمل

The MMSZ5228B operates in the reverse breakdown region where the Zener diode maintains a relatively constant voltage across its terminals despite variations in current. When reverse-biased above the Zener voltage (3.3 V nominal), the diode enters avalanche breakdown, conducting current in the reverse direction while maintaining the Zener voltage at its terminals. The dynamic impedance (ZZT = 28 Ω) represents the small-signal slope of the V-I characteristic at the test current (20 mA), determining how much the Zener voltage changes with load current variations. In a typical shunt regulator application, a series resistor limits the total current, and the Zener diode shunts excess current to maintain the output voltage at approximately 3.3 V.

وصف الدبوس:MMSZ5228B-7-F تعريف الدبوس ووظائفه

دبوس	الاسم	الوظيفة
1	القطب السالب	Positive terminal during Zener operation; marked with band
2	الأنود	Negative terminal during Zener operation; connects to ground

Application Scenarios:In which products and applications isMMSZ5228B-7-F مستعمل

3.3 V Rail Clamping: Shunt regulation and overvoltage clamping for 3.3 V logic power rails
Voltage Reference: Low-precision voltage reference for comparator and op-amp bias circuits
ESD Protection: Input protection for 3.3 V MCU and FPGA I/O pins against transient overvoltage
Signal Clamping: Limiting signal voltage swings to the 3.3 V domain in mixed-voltage systems
Power Supply Sequencing: Voltage threshold detection using the Zener as a reference with a transistor amplifier

Alternative Models:What chips are recommended as replacements for MMSZ5228B-7-F

الطراز	الشركة المصنعة	VZ	Tol	Pd	الحزمة	الملاحظات
MMSZ5228BT1G	أونسمي	3.3 V	5%	500 mW	SOD-123	Direct equivalent
BZX55C3V3	نيكسبيريا	3.3 V	5%	500 mW	DO-35	Through-hole equivalent
MM3Z3V3ST1G	أونسمي	3.3 V	5%	200 mW	SOD-523	Smaller package, lower Pd
BZT52C3V3-7-F	شركة ديودز	3.3 V	5%	500 mW	SOD-123	Same manufacturer, different series
1N5228B-TR	مايكروسيمي	3.3 V	5%	500 mW	DO-35	Through-hole, military grade