18V 1/2 Watt Zener Diode – Reliable Voltage Regulation

Technical Overview

This 18V Zener diode is designed for accurate voltage regulation, making it ideal for protecting sensitive electronic circuits and maintaining stable voltage references. With a 1/2 watt (500mW) power dissipation rating, it suits a variety of low- and medium-power applications.

Key Features

• Nominal Regulating Voltage: 18.0V
• Power Dissipation: 1/2 Watt (500mW)
• Package: Through-hole DO-35
• Quantity per package: 1
• Axial lead design for easy PCB or breadboard mounting

Typical Applications

• Voltage regulation and reference in power supplies
• Surge and overvoltage protection
• Clipping, clamping, and waveform shaping circuits
• General purpose use in laboratory and prototyping work

Usage Instructions

Install the diode in accordance with standard through-hole soldering practices. For voltage regulation, connect the cathode to the positive rail and the anode to the negative or ground side of your circuit. Ensure operation does not exceed the rated 1/2 watt dissipation and use appropriate series resistance to limit current as required for your design.

Part Number: NTE5027A

This part is the equivalent replacement for the following:

0403-000658, 0403000658, 05Z18L, 1029-KH, 1118, 1183-8216, 1223-2286, 1/2Z18T5, 13-0033187-036, 13-33187-36, 134882256324, 134883461518, 134883461533, 1384-5086, 1384-5686, 1/4A18, 1/4A18A, 1/4A18B, 1/4M18Z, 1/4M18Z10, 1/4Z18D, 1/4Z18D10, 1/4Z18D5, 157-180, 157-180(MAG-ZENER), 158077, 185228, 187-36(SYL-ZENER), 18A, 18A(ZENER), 18B1, 18B1(ZENER), 18EB3, 1902-0772, 1N1935, 1N1935A, 1N1962, 1N1962A, 1N1989, 1N1989A, 1N1989B, 1N3405, 1N3418, 1N3524, 1N5248, 1N5248A, 1N5538, 1N5538A, 1N5538B, 1N5742, 1N5742B, 1N5864, 1N5864A, 1N5864B, 1N6006A, 1N667, 1N720, 1N720A, 1N720B, 1N768-1, 1N967, 1N967A, 1N967B, 1S2180, 1S2180A, 1S339, 1S475, 202-5-3210-18010, 254-36, 254-36(MAG-ZENER), .25N18, .25T18B, 264P19307, 264P486020, 34-8057-43, 407-054-8301, 46-86931-3, 46-86999-3, 48-82256C24, 48-83461E18, 48-83461E33, 48-90234A98, 48D82256C24, .4M18Z, 5301571180, 5301571180(11), 530157-180, 5302541036, 530254-36, 5526, 561-2560-966, 561-2560-967, .5M18ZS10, 61E18, 61E33, 71411-014, 71411-14, 82-743-635-01, 8-719-100-76, 8-719-110-49, 8-719-118-07, 95KUBD0128AZ, A7110604, AZ18, AZ967, AZ967A, AZ967B, BAX79C18, BZX46C18, BZX55C18, BZX71C18, BZX79C18, BZX79C18V, BZX83C18, BZX95C18, BZX97-C18., BZX97C18, BZY83C18, BZY83D18, BZY85C18, BZY85D18, BZY88C18, BZY94C18, D0J020A90, D9200180B0, D93T01800Y, EAQ01-18, ECG5027, ECG5027A, EQA01-18, EQA01-18A, EQA01-18R, EQA02-18, EQA02-18A, EQA02-18R, EW16X253, EW16X466, EX0112CE, FD-1029-KH, GZA18, GZA18L, GZA18U, GZA18Y, GZA18Y-BT, HEP-Z0228, HM18, HM18A, HZ18-09, HZ18-2, HZ182, HZ18-3, HZS18, HZS18J, HZS18S, MA1180, MA4180 (May not be an exact mechanical or electrical equivalent. However, it will provide an acceptable substitute in the majority of typical applications.), MA4180-M, MA4180M, MTZ18, MTZ18A, MZ218, MZ218B, MZ318, MZ318A, MZ318B, MZ500-22, NTE5027A, PD6020, PD6020A, PD6061, PS8919, RD18E, RD18E-B, RD18EB, RD18E-B1, RD18EB1, RD18E-B3, RD18ES-B2, RH-EX0112CEZZ, RHEX0112CEZZ, RH-EX0113CEZZ, RH-EX0334CEZZ, RZ18, RZZ18, SK18A, SK18A/5027A, SK3793, SK3793/5027A, SV142, SV4018, SV4018A, SZ18, TM5027A, TVSUZ18BS, UTZJ18, UZ-18B, UZ-18BM, VZ-177, VZ-182, VZ-182A, VZ-182B, VZ-182C, VZ-182D, VZ-182E, WEP1429, WZ-182, WZ542, Z0B18, Z0C18, Z1018, Z18, Z1B18, Z1C18, Z1D18, Z5B18, Z5C18, Z5D18, ZB18, ZE-18, ZEN503, ZG18, ZOD18, ZP18, ZPD18, ZZ18