BZT52C18

## **Zener Diode** 

## **Features** 

- Low Zener Impedance 

- Power Dissipation of 500mW 

- High Stability and High Reliability 

## **Mechanical Data** 

- SOD-123 Small Outline Plastic Package 

- Polarity: Color band denotes cathode end 

- Mounting Position: Any 

- Zener Voltage: 2.4V to 51V 

- Power Dissipation: 500mW 

**Maximum Ratings @ Ta = 25°C unless otherwise specified** 

|**Characteristic**|**Symbol**|**Value**|**Unit**|
|---|---|---|---|
|Max. Forward Voltage@If = 10mA(Note 2)|Vf|0.9|V|
|Junction Temperature(Note 1)|Pd|500|mW|
|Storage Temperature Range|Tstg|-65 to +150|°C|



**Notes** : 

1. Device mounted on ceramic PCB: 7.6mm × 9.4mm × 0.87mm with pad areas 25mm² 

2. Short duration test pulse used to minimize self-heating effect 

**Specification Table** 

|**Specification Table**|**Specification Table**|**Specification Table**|**Specification Table**|**Specification Table**|**Specification Table**|**Specification Table**|**Specification Table**|**Specification Table**|**Specification Table**|
|---|---|---|---|---|---|---|---|---|---|
|**Part Number**<br>**Marking**<br>**Zener Voltage Range**<br>**Maximum Zener Impedance**<br>**Maximum**<br>**Reverse Current**<br>**Vz@ Izt**<br>**Izt**<br>**Zzt@Izt**<br>**Zzk@Izk**<br>**Izk**<br>**IR**<br>**VR**<br>**Nom(V)**<br>**Min(V)**<br>**Max(V)**<br>**mA**<br>**Ω**<br>**mA**<br>**μA**<br>**V**<br>BZT52C10<br>WF<br>10<br>9.4<br>10.6<br>5<br>20<br>150<br>1<br>0.2<br>7<br>BZT52C18<br>WL<br>18<br>16.8<br>19.1<br>5<br>45<br>225<br>1<br>0.1<br>12.6<br>BZT52C33<br>WR<br>33<br>31<br>35<br>2<br>80<br>325<br>0.5<br>0.1<br>23.1<br>BZT52C3V9<br>W5<br>3.9<br>3.7<br>4.1<br>5<br>90<br>600<br>1<br>3<br>1<br>BZT52C4V7<br>W7<br>4.7<br>4.4<br>5<br>5<br>80<br>500<br>1<br>3<br>2<br>BZT52C5V1<br>W8<br>5.1<br>4.8<br>5.4<br>5<br>60<br>480<br>1<br>2<br>2<br>**Part Number**<br>**Typical Temperature**<br>**Coefficient@ IZTC = mV/°C**<br>**Test Current**<br>**IZTC**<br>~~a~~<br>~~a a~~<br>~~ee ee~~<br>~~Rs es se es~~<br>~~es~~<br>~~Se~~||||||||||
|||**Min.**<br>**Max.**<br>**mA**||||||||
||BZT52C10|4.5<br>8<br>5||||||||
||BZT52C18|12.4<br>16<br>5||||||||
||BZT52C33|27.4<br>33.4<br>2||||||||
||BZT52C3V9|-3.5<br>0<br>5||||||||
||BZT52C4V7|-3.5<br>0.2<br>5||||||||
||BZT52C5V1|-2.7<br>1.2<br>5||||||||



Newark.com/multicomp-pro Farnell.com/multicomp-pro sg.element14.com/b/multicomp-pro 

07/04/26 V1.0 

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## **Zener Diode** 

## **Rating and Characteristic Curves** 

**Forward Characteristics** 

**Dynamic Resistance Vs. Zener Current** 

**Dynamic Resistance Vs. Zener Voltage** 

**Admissible Power Dissipation Vs. Ambient Temperature** 

**Dynamic Resistance Vs. Zener Current** 

**Temperature Dependence of Zener Voltage Vs. Zener Voltage** 

**Dynamic Resistance Vs. Zener Current** 

**Thermal Differential Resistance Vs. Zener Voltage** 

**Change of Zener Voltage Vs. Junction Temperature** 

Newark.com/multicomp-pro Farnell.com/multicomp-pro sg.element14.com/b/multicomp-pro 

07/04/26 V1.0 

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## **Zener Diode** 

**Temperature Dependence of Zener Voltage Vs. Zener Voltage** 

**Total capacitance Vs Nominal Zener Voltage** 

**Change of Zener Voltage Vs. Junction Temperature** 

**Breakdown Characteristics** 

**Change of Zener Voltage from Turn-on up to the point of Thermal Equilibrium Vs. Zener Voltage** 

**Breakdown Characteristics** 

Newark.com/multicomp-pro Farnell.com/multicomp-pro sg.element14.com/b/multicomp-pro 

07/04/26 V1.0 

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## **Zener Diode** 

## **Dimensions:** 

## **SOD-123** 

||**Dimensions**|**Dimensions**|||**Dimensions**|**Dimensions**|**Dimensions**|
|---|---|---|---|---|---|---|---|
|**Symbol**|**Min.**|**Max.**||**Symbol**|**Min.**||**Max.**|
|A|1.02|1.25||E|2.6||2.8|
|A1|0|0.1||E1|3.55||3.85|
|A2|1.05|1.15||L|0.5 REF|0.5 REF||
|b|0.45|0.65||L1|0.25||0.45|
|c|0.08|0.15||θ|0°||8°|
|D|1.5|1.7||||||



Dimensions : Millimetres 

## **Part Number Table** 

|**Part Number Table**||
|---|---|
|**Description**|**Part Number**|
|Zener - Single 500mW 10V SOD-123|BZT52C10|
|Zener - Single 500mW 18V SOD-123|BZT52C18|
|Zener - Single 500mW 33V SOD-123|BZT52C33|
|Zener - Single 500mW 3.9V SOD-123|BZT52C3V9|
|Zener - Single 500mW 4.7V SOD-123|BZT52C4V7|
|Zener - Single 500mW 5.1V SOD-123|BZT52C5V1|



**Important Notice :** This data sheet and its contents (the “Information”) belong to the members of the AVNET group of companies (the “Group”) or are licensed to it. No licence is granted for the use of it other than for information purposes in connection with the products to which it relates. No licence of any intellectual property rights is granted. The Information is subject to change without notice and replaces all data sheets previously supplied. The Information supplied is believed to be accurate but the Group assumes no responsibility for its accuracy or completeness, any error in or omission from it or for any use made of it. Users of this data sheet should check for themselves the Information and the suitability of the products for their purpose and not make any assumptions based on information included or omitted. Liability for loss or damage resulting from any reliance on the Information or use of it (including liability resulting from negligence or where the Group was aware of the possibility of such loss or damage arising) is excluded. This will not operate to limit or restrict the Group’s liability for death or personal injury resulting from its negligence. Multicomp Pro is the registered trademark of Premier Farnell Limited 2019. 

Newark.com/multicomp-pro Farnell.com/multicomp-pro sg.element14.com/b/multicomp-pro 

07/04/26 V1.0 

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