12V 1/2W Zener Diode - Through Hole (NTE5021A)

Nominal 12V Zener Diode for Voltage Regulation

This through hole Zener diode provides a nominal regulating voltage of 12.0 volts with a power dissipation rating of 0.5W (500mW), making it ideal for precision voltage regulation and circuit protection applications. Designed for reliability and consistent performance, this 12V Zener diode is suited for use in power supplies, reference voltage circuits, and protection of sensitive electronic components.

Key Features & Technical Specifications

• Nominal Zener Voltage: 12.0V
• Power Dissipation: 1/2 Watt (0.5W, 500mW)
• Package: DO-35 (Axial Lead, through hole mounting)
• Part Number: NTE5021A
• Reverse Polarity Operation for Zener Regulation
• Reliable performance for voltage regulation and limiting applications
• Supplied in single-unit quantities

Applications

• Voltage reference and voltage regulation in electronic circuits
• Transient voltage suppression
• Power supply regulation and protection
• Precision circuits requiring 12V regulated output
• General-purpose circuit design where stable 12V Zener control is needed

Installation & Usage

To utilize this 12V Zener diode, install in the desired section of your through hole PCB or circuit. Connect the cathode to the higher voltage side and the anode to ground for standard Zener regulation. Ensure the maximum power dissipation does not exceed 0.5W to maintain long-term reliability.

This part is the equivalent replacement for the following:

0053-033-71120, 0054-0240, 0064-133XX-XXJX, 02B3, 02Z12A, 02Z12GR, 0300313013, 03SZ-RD12EB, 03SZ-RD12EB(AU), 0403-000654, 0403-00654, 05Z12, 05Z12-X, 05Z12-Y, 05Z12-Z, 05Z12Z, 06200180, 06200187, 1029-GC, 103-279-21A, 10327921A, 103-306A, 103-308, 103-308A, 103-409A, 103409A, 1082-6915, 108-308, 11115071, 1112, 1145-2695, 1177-1276, 1180-4457, 1181-5263, 1183-3266, 1184-9064, 1217-9339, 1229-8709, 1255-2626, 12A(ZENER), 12B, 12B1(ZENER), 12B2(.5W), 12B2.5W, 12B3, 12B3(ZENER), 12BM, 12B(ZENER), 12C2, 12C2(ZENER), 12X, 12Y, 12Y(ZENER), 12Z, 12Z(ZENER), 13-0033187-011, 1309-0915, 13-14094-79, 13-33187-11, 134882256317, 134882256325, 1371-5404, 13715404, 1417898-010, 141873, 146841, 146846, 147406, 149930, 1/4M12Z, 1/4M12Z10, 1/4M12Z5, 1/4Z12D, 1/4Z12D10, 1/4Z12D5, 151335, 153826, 157-1120, 157-1120(MAG-ZENER), 157-120, 157-120(MAG-ZENER), 162909, 178635, 187-11(SYL), 189615, 1902-1246, 19SZ-WZ-120, 1N1736, 1N1736A, 1N1933, 1N1933A, 1N1960, 1N1987, 1N1987A, 1N1987B, 1N3403, 1N3416, 1N3520, 1N5242, 1N5242A, 1N5242B, 1N5532, 1N5532A, 1N5532B, 1N5738, 1N5738B, 1N5858, 1N6002A, 1N6002B, 1N716, 1N716A, 1N759, 1N759A, 1N759A-F, 1N766-1, 1N963, 1N963A, 1N963B, 1N963B-F, 1S197, 1S2120, 1S2120A, 1S337, 1S7120, 1S7120A, 1S7120B, 2008220174, 2008220490, 2008222052, 201221228, 2012220174, 2012221228, 2012221229, 2012222096, 2012222129, 2169-403-1105, 2169-403-7303, 2169-403-7503, 21A037-001, 21A119-034, 2231154, 223910, 223963, 230808, 2321154, 2331154, 23311545, 2331155, 23311555, 2331843, 2337103, 244057, 254-11, 254-11(MAG-ZENER), .25N12, 264P19306, 264P22103, 264P29004, 264P34204, 264P465010, 264P46502, 300313013, 30600650, 3198-010-21290, 3198-01021290, 319801021290, 32167-406-250, 32167406250, 34SZ-UZ-12B, 34SZ-UZ12B, 407-054-3108, 4070543108, 407-054-3306, 4070543306, 4091883, 4120500125, 4120501200, 46-861067-3, 46-862612-3, 46-862642-3, 46-86587-3, 46-86664-3, 46-86677-3, 48-00155192, 48-137644, 48-155192, 48-155210, 4822-130-31096, 482213031096, 4835-130-37123, 483513037123, 4835-130-47001, 483513047001, 48-82256C17, 48-82256C25, 48-90235A57, 48-90237A65, 48-90420A18, 48D82256C17, 48P83193A60, 48X90237A65, 48X90456A71, 4D12EB1, .4M12AZ10, .4M12AZ5, .4M12Z, .4M12Z5, .4T12, 502058S, 50SZ-HZ12A2, 512058S, 5301271120, 5301571120, 530157-120, 530225-120, 530254-11, 5303021003, 5303371120, 5330532, 5390760121, 5522, 55SZ-RD12EB, 56SZ-120, 56SZ-120(AU), 56SZ-WZ120, 56SZ-WZ120(AU), 57-120, 57-120(MAG-ZENER), .5M12ZS10, .5M12ZS5, 6615002601, 6625002601, 6631000100, 67-31212-04, 7117215, 71SZ-RD12B(AU), 71SZ-UZ-12B, 71SZ-UZ-12B(AU), 72473-001, 7898-10(RCA), 82-743-634-01, 8409-12483, 84SZ-RD12EB3, 86-61-1, 8-719-100-64, 8-719-100-65, 8-719-101-82, 8-719-102-98, 8-719-110-31, 8-719-110-33, 8-719-112-24, 8-719-112-25, 8-719-930-12, 8-719-936-12, 903-10055, 90310055, 903-101126, 92LMTZJ12BT, 92LRD12EB, 99201-21, 99201-318, A-120077, A7110412, AZ12, AZ759, AZ759A, AZ963, AZ963A, AZ963B, BZX46C12, BZX55C12, BZX71C12, BZX79-C12, BZX79/C12, BZX79-C12., BZX79C12, BZX83C12, BZX97-C12, BZX97C12, BZY69, BZY83C12, BZY83D12, BZY85C12, BZY85D12, BZY88, BZY88C12, BZY94C12, D9200120B1, D93001200X, D93001200Y, D93TO1200Y, DJJ-WZ-120, DUZ12BM, DX-0403, DX0403, DX-2306, DZPD12, E1208ZG, EAD00-08200, ECG5021, ECG5021A, EP15X36, EQA01-12, EQA01-1251, EQA01-12S, EQA01-12S1, EQA01-12SI, EQA02-11B, EQA02-11C, EQA02-11CD, EQA02-11CDB, EQA02-12, EQA0212AB, EQA02-12M1, EQA02-12S, EQB01-12Z, EQG01-12A, EW16X185, EW16X316, EW16X330, EW16X370, EW16X429, EW16X535, EW16X567, EX0094CEZZ, EX0200CE, EX0322CE, FD-1029-GC, GZA12, GZA12BT, GZA-12L, GZA12X, GZA12YBT, HEP-Z0222, H-EX0047CE, HM12, HM12A, HZ11C25, HZ-12(A), HZ-12A, HZ12(A), HZ12A, HZ-12A3, HZ12(B), HZ-12(C), HZ-12C, HZ12-C, HZ12(C), HZ12C, HZ-12(C1), HZ12(C1), HZ312A, HZS12J, MA1120A, MA1120-L, MA1120L, MA1120M, MA4120-H, MA4120H, MA4120(M), MA4120(M)-T2, MA4120(M)-Y, MA4120M-Y, MA4120Y, MK30884(ZENITH), MTZ12, MTZJ12B (Minor mechanical difference exists, but device will fit most applications.), MZ212B, MZ312, MZ312A, MZ-312B, MZ312B, MZ312C, N5303020003, NTE5021A, O2Z12A, O5Z12X, O5Z12Z, ODZ120009AA, QA112R, QA112RN-2, QB112, QEA02-12A, RD11EC, RD1212EB-T4, RD12B, RD12-B1, RD12E, RD12E(3), RD12EA, R-D12EB, RD-12EB, RD12EB0(2), RD12E-B1, RD12E(B1), RD12EB-1, RD12EB(1), RD12EB1, RD12E-B1Z, RD12EB1Z, RD12E-B2, RD12EB-2, RD12EB2M, RD12E-B2Z, RD12E-B3, RD12EB(3), RD12EB3, RD12EB(3)-T4, RD12EBD, RD12EBH, RD12EBM, RD12EBN, RD12EBO(2), RD12EB-T4, RD12E-L1, RD12E-N3, RD12ES-B2, RD12ES-B3, RD12ESB3, RD12ES-T2B2, RD12E-T2, RD12JB2, RD13AL, RH-EX0036TAZZ, RH-EX0094CEZZ, RH-EX0200CEZZ, RHEX0200CEZZ, RH-EX0322CEZZ, RHEX0322CEZZ, RH-EX0323CEZZ, RHEX0323CEZZ, RZ12, RZZ12, SK12A, SK12A/5021A, SK3787, SK3787/5021A, SVDMZ312C2, SZ-120, SZ-120(AU), SZ-RD12B(AU), SZ-RD12EB, SZ-RD12EB3, SZ-UZ-12B, SZ-UZ12B, SZ-WZ-063, SZ-WZ-120, SZ-WZ120, TM5021A, TR12SA, TVSQA112, TVSQA112R, TVSQA112RN-2, TVSRD12EB, TVSRD12EB1, TVSRD12EB1Z, TVSRD12EB2M, TVSRD12EBH, TVSRD12EBM, U2-12B, US7120B, UZ-12, UZ-12B, UZ-12BCB, UZ-12BM, VHEHZ12A2L, VZ-120, VZ-120A, VZ-120B, VZ-120C, VZ-120D, VZ-120E, WEP1423, WZ-120, WZ120, X0200CE(ZENER), Z1014, Z12.0, Z12B, Z12BM, Z12BMTA, Z12B(ZENER), Z12(ZENER), ZD12(C), ZD12C, ZEN502, ZPD12