二極體	SMD 齊納二極體 SMD Zener Diodes
製造商	ON Semiconductor
系列	MMBZ52
原廠料號	MMBZ5222BLT1G
說明	ZENER 225mW 2.5V SOT-23
功率	225mW
Vz - Zener 電壓	2.5V
Zener Voltage Min	2.37V
Zener Voltage Max	2.63V
電壓公差	±5%
阻抗(最大值)	30 Ohm
電流 - 逆向漏電	100µA @ 1V
電壓 - 順向 (Vf)(最大值)	900mV @ 10mA
工作溫度	-65°C ~ 150°C
封裝／外殼	SOT-23
安裝類型	表面黏著式 SMD
無鉛狀態	RoHS / Halogen Free
應用產品	車規
備註	AEC-Q101
標準包裝數量	3000/REEL 捲軸

ON Semiconductor

MMBZ52xxBLT1G Series,
SZMMBZ52xxBLT1G Series
Zener Voltage Regulators
225 mW SOT-23 Surface Mount
This series of Zener diodes is offered in the convenient, surface
mount plastic SOT-23 package. These devices are designed to provide
voltage regulation with minimum space requirement. They are well
suited for applications such as cellular phones, hand held portables,
and high density PC boards.

Features
225 mW Rating on FR?4 or FR?5 Board
Zener Voltage Range - 2.4 V to 91 V
Package Designed for Optimal Automated Board Assembly
Small Package Size for High Density Applications
ESD Rating of Class 3 (> 16 KV) per Human Body Model
SZ Prefix for Automotive and Other Applications Requiring Unique
Site and Control Change Requirements; AEC?Q101 Qualified and
PPAP Capable
These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS
Compliant

Mechanical Characteristics
CASE:Void-free, transfer-molded, thermosetting plastic case
FINISH:Corrosion resistant finish, easily solderable
MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES:
260°C for 10 Seconds
POLARITY:Cathode indicated by polarity band
FLAMMABILITY RATING:UL 94 V-0

MAXIMUM RATINGS

Rating	Symbol	Max	Units
Total Power Dissipation on FR−5 Board, (Note@ TA = 25°C Derated above 25°C	PD	225 1.8	mW mW/°C
Thermal Resistance, Junction−to−Ambient	RSJA	556	°C/W
Total Power Dissipation on Alumina Substrate, (Note@ TA = 25°C Derated above 25°C	PD	300 2.4	mW mW/°C
Thermal Resistance, Junction−to−Ambient	RSJA	417	°C/W
Junction and Storage Temperature Range	TJ, Tstg	−65 to +150	°C

ORDERING INFORMATION

Device	Package	Shipping
MMBZ52xxBLT1G	SOT−23 (Pb−Free)	3,000 / Tape & Reel
SZMMBZ52xxBLT1G	SOT−23 (Pb−Free)	3,000 / Tape & Reel
MMBZ52xxBLT3G	SOT−23 (Pb−Free)	10,000 / Tape & Reel
SZMMBZ52xxBLT3G	SOT−23 (Pb−Free)	10,000 / Tape & Reel

ELECTRICAL CHARACTERISTICS (Pinout: 1-Anode, 2-NC, 3-Cathode) (VF = 0.9 V Max @ IF = 10 mA for all types.)
 

Device	Device Marking	VZ (Volts)			IZT
		Min	Nom	Max	mA
MMBZ5221BLT1G	18A	2.28	2.4	2.52	20
MMBZ5222BLT1G	18B	2.37	2.5	2.63	20
MMBZ5223BLT1G	18C	2.56	2.7	2.84	20
MMBZ5224BLT1G	18D	2.66	2.8	2.94	20
MMBZ5225BLT1G	18E	2.85	3	3.15	20
MMBZ5226BLT1G	8A	3.13	3.3	3.47	20
MMBZ5227BLT1G	8B	3.42	3.6	3.78	20
MMBZ5228BLT1G	8C	3.7	3.9	4.1	20
MMBZ5229BLT1G	8D	4.08	4.3	4.52	20
MMBZ5230BLT1G	8E	4.46	4.7	4.94	20
MMBZ5231BLT1G/T3G	8F	4.84	5.1	5.36	20
MMBZ5232BLT1G/T3G	8G	5.32	5.6	5.88	20
MMBZ5233BLT1G	8H	5.7	6	6.3	20
MMBZ5234BLT1G/T3G	8J	5.89	6.2	6.51	20
MMBZ5235BLT1G	8K	6.46	6.8	7.14	20
MMBZ5236BLT1G	8L	7.12	7.5	7.88	20
MMBZ5237BLT1G	8M	7.79	8.2	8.61	20
MMBZ5238BLT1G	8N	8.26	8.7	9.14	20
MMBZ5239BLT1G	8P	8.64	9.1	9.56	20
MMBZ5240BLT1G	8Q	9.5	10	10.5	20
MMBZ5241BLT1G/T3G	8R	10.4	11	11.55	20
MMBZ5242BLT1G/T3G	8S	11.4	12	12.6	20
MMBZ5243BLT1G	8T	12.35	13	13.65	9.5
MMBZ5244BLT1G	8U	13.3	14	14.7	9
MMBZ5245BLT1G	8V	14.25	15	15.75	8.5
MMBZ5246BLT1G	8W	15.2	16	16.8	7.8
MMBZ5247BLT1G/T3G	8X	16.15	17	17.85	7.4
MMBZ5248BLT1G/T3G	8Y	17.1	18	18.9	7
MMBZ5249BLT1G	8Z	18.05	19	19.95	6.6
MMBZ5250BLT1G/T3G	81A	19	20	21	6.2
MMBZ5251BLT1G	81B	20.9	22	23.1	5.6
MMBZ5252BLT1G	81C	22.8	24	25.2	5.2
MMBZ5253BLT1G	81D	23.75	25	26.25	5
MMBZ5254BLT1G	81E	25.65	27	28.35	4.6
MMBZ5255BLT1G	81F	26.6	28	29.4	4.5
MMBZ5256BLT1G	81G	28.5	30	31.5	4.2
MMBZ5257BLT1G/T3G	81H	31.35	33	34.65	3.8
MMBZ5258BLT1G	81J	34.2	36	37.8	3.4
MMBZ5259BLT1G	81K	37.05	39	40.95	3.2
MMBZ5260BLT1G	81L	40.85	43	45.15	3
MMBZ5261BLT1G/T3G	81M	44.65	47	49.35	2.7
MMBZ5262BLT1G	81N	48.45	51	53.55	2.5
MMBZ5263BLT1G	81P	53.2	56	58.8	2.2
MMBZ5264BLT1G	81Q	57	60	63	2.1
MMBZ5265BLT1G	81R	58.9	62	65.1	2
MMBZ5266BLT1G	81S	64.6	68	71.4	1.8
MMBZ5267BLT1G	81T	71.25	75	78.75	1.7
MMBZ5268BLT1G	81U	77.9	82	86.1	1.5
MMBZ5270BLT1G	81W	86.45	91	95.55	1.4

 

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ZD 齊納二極體，是利用二極體在逆向電壓作用下的稽納擊穿（崩潰）效應，

製造而成的一種具有穩定電壓功能的電子技術元件，因此又稱為「穩壓管」。

一般二極體順向導通時電壓可維持在0.7V，可提供穩定的電壓，但如果我們需要更大的電壓時，

則需串聯很多的二極體，使用上不是很方便。

如果二極體逆向偏壓很大時，會發生崩潰現象，此現象和順向導通時情況類似，

都有穩壓穩流的特性，所以利用這個特性發明了這種特殊的二極體——稽納二極體。

優點:稽納二極體可以簡化電路，如上所說，如果需要多顆二極體串聯的電路，則可以用稽納二極體來簡化電路。

稽納二極體的這些特性，在電壓比較器、直流穩壓電源等方面有廣泛的應用。

ZENER的產品可應用在以下產品上:各式手機、相機或筆電充電器各式電腦、監視器或警報器電源供應器。