Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers

    ZMM5242B Search Results

    SF Impression Pixel

    ZMM5242B Price and Stock

    Vishay Semiconductors ZMM5242B-7

    DIODE ZENER 12V 500MW MINI MELF
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey ZMM5242B-7 Reel
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now

    Diodes Incorporated ZMM5242B-7

    DIODE ZENER 12V 500MW MINI MELF
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey ZMM5242B-7 Cut Tape 1
    • 1 $0.23
    • 10 $0.23
    • 100 $0.23
    • 1000 $0.23
    • 10000 $0.23
    		Buy Now
    ZMM5242B-7 Digi-Reel 1
    • 1 $0.23
    • 10 $0.23
    • 100 $0.23
    • 1000 $0.23
    • 10000 $0.23
    		Buy Now
    ZMM5242B-7 Reel 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.06202
    		Buy Now
    Onlinecomponents.com ZMM5242B-7 20
    • 1 $0.463
    • 10 $0.463
    • 100 $0.463
    • 1000 $0.1596
    • 10000 $0.0535
    		Buy Now
    Bristol Electronics ZMM5242B-7 7,505
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    ZMM5242B-7 2,564
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    ZMM5242B-7 459
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    Quest Components ZMM5242B-7 6,004
    • 1 $0.2
    • 10 $0.2
    • 100 $0.09
    • 1000 $0.06
    • 10000 $0.06
    		Buy Now
    ZMM5242B-7 51
    • 1 $0.5
    • 10 $0.5
    • 100 $0.225
    • 1000 $0.225
    • 10000 $0.225
    		Buy Now
    ZMM5242B-7 31
    • 1 $0.08
    • 10 $0.08
    • 100 $0.08
    • 1000 $0.08
    • 10000 $0.08
    		Buy Now
    Component Electronics, Inc ZMM5242B-7 9,835
    • 1 $0.38
    • 10 $0.38
    • 100 $0.29
    • 1000 $0.25
    • 10000 $0.25
    		Buy Now

    Vishay Semiconductors ZMM5242B-13

    DIODE ZENER 12V 500MW MINI MELF
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey ZMM5242B-13 Reel
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now

    MOSLEADER ZMM5242B_R0_00001-ML

    MiniMELF(SOD80) Commercial Grade
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey ZMM5242B_R0_00001-ML Reel 250
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.01535
    • 10000 $0.0124
    		Buy Now

    MOSLEADER ZMM5242B_R0_10001-ML

    MiniMELF(SOD80) Commercial Grade
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey ZMM5242B_R0_10001-ML Reel 250
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.01535
    • 10000 $0.0124
    		Buy Now
    Find more ZMM5242B price and stock on Findchips.com

    ZMM5242B Datasheets (14)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    ZMM5242B Diodes Short Form Selection Guide Original PDF
    ZMM5242B Diodes 500 mW Surface Mount Zener Diode Original PDF
    ZMM5242B Diodes 500mW SURFACE MOUNT ZENER DIODE Original PDF
    ZMM5242B EIC Semiconductor Zener Diodes Original PDF
    ZMM5242B Kexin Zener Diodes Original PDF
    ZMM5242B Rectron Semiconductor 500mW 5% mini-M.E.L.F. ZENER DIODE Original PDF
    ZMM5242B Rectron Semiconductor 500mW 5% mini-M.E.L.F ZENER DIODE Original PDF
    ZMM5242B TY Semiconductor Zener Diodes - LL-34 Original PDF
    ZMM5242B Jinan Gude Electronic Device SURFACE MOUNT ZENER DIODES/MINI MELF Scan PDF
    ZMM5242B Micronas Semiconductor Silicon Planar Zener Diode Scan PDF
    ZMM5242B-13 Vishay Semiconductor Diodes Division Discrete Semiconductor Products - Diodes - Zener - Single - DIODE ZENER 12V 500MW MINI MELF Original PDF
    ZMM5242B-7 Diodes DIODE ZENER 12V 500MW MINIMELF Original PDF
    ZMM5242B-7 Diodes Diodes - Zener - Single, Discrete Semiconductor Products, DIODE ZENER 12V 500MW MINIMELF Original PDF
    ZMM5242B-7 Vishay Semiconductor Diodes Division Discrete Semiconductor Products - Diodes - Zener - Single - DIODE ZENER 12V 500MW MINI MELF Original PDF

    ZMM5242B Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    transformer ee10

    Abstract: TFS759 smd optocoupler marking 530 5612a eSIP-16 TFS760 PC817XI1 TFS763 PC817X1J00F TFS758HG
    Text: TFS757-764HG HiperTFS Family Combined Two-Switch Forward and Flyback Power Supply Controllers with Integrated High Voltage MOSFETs Key Benefits • Single chip solution for two-switch forward main and flyback standby • High integration allows smaller form factor and higher power


    Original     		PDF TFS757-764HG transformer ee10 TFS759 smd optocoupler marking 530 5612a eSIP-16 TFS760 PC817XI1 TFS763 PC817X1J00F TFS758HG

    SMD Transistors w04 sot-23

    Abstract: transistor SOT-23 w04 SB050 transistor IN4728A mosfet SMD w04 SN30SC4 smd diode code gs1m W01 SMD mosfet W04 sot 23 1s355
    Text: RETURN TO PRODUCT CATALOG TABLE OF CONTENTS RETURN TO PRODUCT CATALOG INDEX RETURN TO DIODES INC. NEW PRODUCTS PAGE Product Catalog Diodes Incorporated 3050 E. Hillcrest Drive Westlake Village, CA 91362-3154 2000/2001 Specifications are subject to change without notice.


    Original     		PDF represent9-14 SMD Transistors w04 sot-23 transistor SOT-23 w04 SB050 transistor IN4728A mosfet SMD w04 SN30SC4 smd diode code gs1m W01 SMD mosfet W04 sot 23 1s355

    IRFU840

    Abstract: ELECTRONIC BALLAST DIAGRAM 28w capacitor 100nf 630v CAPACITOR 10U 16V 28W ELECTRONIC BALLAST 2 LAMP SCHEMATIC IR2158 electronic ballast for T5 28w ELECTRONIC BALLAST T5 54w PFC BALLAST CONTROL IC l6562 L6562 dimming
    Text: Application Note AN-1149 Designing a Wide Range Input Linear Dimming T5/54W Fluorescent Ballast using the IRS2158D By Peter Green, Veronika Stelmakh, Andre Tjokrorahardjo Table of Contents Page Introduction . 2


    Original     		PDF AN-1149 T5/54W IRS2158D com/whats-new/nr051026 IRFU840 ELECTRONIC BALLAST DIAGRAM 28w capacitor 100nf 630v CAPACITOR 10U 16V 28W ELECTRONIC BALLAST 2 LAMP SCHEMATIC IR2158 electronic ballast for T5 28w ELECTRONIC BALLAST T5 54w PFC BALLAST CONTROL IC l6562 L6562 dimming

    DL5237B

    Abstract: ZMM52
    Text: DL52/ZMM52-SERIES ZENER DIODES Zener Voltage:2.4-56V Peak Pulse Power:500mW FEATURE MINI MELF 0.063 1.6 0.055(1.4) 0.020(0.5) 0.012(0.3) Low zener impedance Low regulation factor Glass passivated junction High temperature soldering guaranteed: 260 C/10S at terminals


    Original     		PDF DL52/ZMM52-SERIES 500mW C/10S DL/ZMM52 DL/ZMM5252 DL/ZMM5250 DL/ZMM5245 DL/ZMM5242 DL/ZMM5241 DL/ZMM5239 DL5237B ZMM52

    TFS760

    Abstract: transformer ee10 schematic diagram of ctr flyback tv
    Text: TFS757-764HG HiperTFS Family Combined Two-Switch Forward and Flyback Power Supply Controllers with Integrated High Voltage MOSFETs Key Benefits • Single chip solution for two-switch forward main and flyback standby • High integration allows smaller form factor and higher power


    Original     		PDF TFS757-764HG TFS760 transformer ee10 schematic diagram of ctr flyback tv

    TFS760

    Abstract: transformer ee10 5612a schematic diagram of ctr flyback tv eSIP-16
    Text: TFS757-764HG HiperTFS Family Combined Two-Switch Forward and Flyback Power Supply Controllers with Integrated High Voltage MOSFETs Key Benefits • Single chip solution for two-switch forward main and flyback standby • High integration allows smaller form factor and higher power


    Original     		PDF TFS757-764HG TFS760 transformer ee10 5612a schematic diagram of ctr flyback tv eSIP-16

    MINI-MELF DIODE marking 3

    Abstract: minimelf diodes color yellow LL-34 diodes color yellow minimelf zener diodes color blue MELF ZENER DIODE color bands blue MELF DIODE color bands blue MINI-MELF zener DIODE 3 band marking Zener Diode minimelf Zener diode melf marking 22 minimelf blue color
    Text: ZMM52XXB Series Elektronische Bauelemente 500 mW, MINI-MELF LL-34 Surface Mount Zener Diodes RoHS Compliant Product A suffix of “-C” specifies halogen & lead-free MINI-MELF(LL-34) FEATURES Zener Voltage Range 2.4 to 56 Volts Mini-MELF (LL-34) Package


    Original     		PDF ZMM52XXB LL-34) 60-cycle 04-Dec-2009 MINI-MELF DIODE marking 3 minimelf diodes color yellow LL-34 diodes color yellow minimelf zener diodes color blue MELF ZENER DIODE color bands blue MELF DIODE color bands blue MINI-MELF zener DIODE 3 band marking Zener Diode minimelf Zener diode melf marking 22 minimelf blue color

    MINIMELF 5240

    Abstract: No abstract text available
    Text: ZMM5221B~ZMM5267B SURFACE MOUNT ZENER DIODES 2.4 to 75 Volts VOLTAGE POWER MINI-MELF/LL-34 500 mWatts Unit : inch mm FEATURES • Planar Die construction • 500mW Power Dissipation • Ideally Suited for Automated Assembly Processes .063(1.6) .055(1.4)DIA.


    Original     		PDF ZMM5221B ZMM5267B MINI-MELF/LL-34 500mW 2002/95/EC MIL-STD-750, MINIMELF 5240

    secos gmbh

    Abstract: c945 p 331 transistor npn SM2150AM SM1150AM c945 p 331 transistor SMBJ11CA 2sd2142 SM4005A SSG8 pzt649
    Text: Table of Contents Diodes Rectifier Schottky Rectifier 》Low VF Schottky Rectifier C1 - C5 Fast Rectifier D1 - D3 Low Loss Super Fast Bridge E1 - E3 F1 High Efficiency G1 - G4 Schottky H1 - H3 Switching I1- I3 PiN Diode J1 Bridge Rectifier 》 Fast Bridge Rectifiers


    Original     		PDF SGSR809-A SC-59 SGSR809-B SGSR809-C SGSR809-D SGSR809-E secos gmbh c945 p 331 transistor npn SM2150AM SM1150AM c945 p 331 transistor SMBJ11CA 2sd2142 SM4005A SSG8 pzt649

    Untitled

    Abstract: No abstract text available
    Text: ZMM52 SERIES 稳压（齐纳）二极管 Zener Diodes •特征 Features ■外形尺寸和印记 ●Ptot 500mW ●Vz 2.4V-75V Outline Dimensions and Mark MinMELF SOD-80 LL-35 Mounting Pad Layout .0049(1.25) .063(1.60) .055(1.40) 0.097(2.00) .098(2.50) ■用途 Applications


    Original     		PDF ZMM52 500mW V-75V OD-80 LL-35) 22-Sep-11 21yangjie

    ccfl inverter schematic

    Abstract: ZVS Royer CFL inverter circuit schematic diagram CFL 12v inverter circuit schematic diagram free 6 ccfl inverter Royer oscillator circuit diagram Royer oscillator pwm schematic inverter philips ccfl inverter delta inverter ccfl
    Text: ANP005 Application Note AP2001 CCFL Inverter Contents 1. AP2001 Specifications 1.1 Features 1.2 General Description 1.3 Pin Assignments 1.4 Pin Descriptions 1.5 Block Diagram 1.6 Absolute Maximum Ratings 2. Hardware 2.1 2.2 2.3 2.4 2.5 2.6 3. Introduction


    Original     		PDF ANP005 AP2001 R9/R19 100KO R11/R36 ccfl inverter schematic ZVS Royer CFL inverter circuit schematic diagram CFL 12v inverter circuit schematic diagram free 6 ccfl inverter Royer oscillator circuit diagram Royer oscillator pwm schematic inverter philips ccfl inverter delta inverter ccfl

    1N5224

    Abstract: BZV55C4V3 BZV55C6V2 BZV55C12 BZV55C15
    Text: Zener Diodes Part Number Package Outline Power Dissipation Pd (mW) Max. Voltage (VZ) (V) Test Current (IZT) (mA) Max Reverse Leakage Current (IR) ( A) Test Voltage (VR) (V) MAX. Zener Impedance (ZZT) (Ω) MAX. Zener Impedance (ZZk) (Ω) Test Current (IZk)


    Original     		PDF MMBZ5221B OT-23 MMBZ5222B MMBZ5223B MMBZ5225B MMBZ5226B 1N5224 BZV55C4V3 BZV55C6V2 BZV55C12 BZV55C15

    smd marking 911 zener

    Abstract: d3g smd NPN Transistor smd code LY 83 marking codes transistors a8 sot-23 TRANSISTOR SMD MARKING CODE s2a 1045ct mosfet SOD-123 a18 W06* MARKING smd code KBJ 3580 6045pt
    Text: RETURN TO SHORT FORM TABLE OF CONTENTS ################################### RETURN TO SHORT FORM INDEX RETURN TO DIODES INC. NEW PRODUCTS PAGE Short Form Diodes Incorporated 3050 E. Hillcrest Drive Westlake Village, CA 91362-3154 September 1999 Specifications are subject to change without notice.


    Original     		PDF M5263B, ZMM5264B, ZMM5265B, ZMM5266B, ZMM5267B, ZMM56, ZMM62, ZMM68, ZMM75, smd marking 911 zener d3g smd NPN Transistor smd code LY 83 marking codes transistors a8 sot-23 TRANSISTOR SMD MARKING CODE s2a 1045ct mosfet SOD-123 a18 W06* MARKING smd code KBJ 3580 6045pt

    pic16f628p

    Abstract: IR21592 ELECTRONIC BALLAST 4 LAMP SCHEMATIC npn MP transistor PIC16F628 dali bridge schematic L6561D fluorescent ballasts 36w TRANSISTOR dali power supply circuit diagram IR21592 IR21593
    Text: IRPLDIM2a International Rectifier • 233 Kansas Street, El Segundo, CA 90245 USA Digitally Addressable DALI Dimming Ballast Reference Design By Cecilia Contenti and Tom Ribarich International Rectifier and Ross Fosler (Microchip Technology, Inc.) FEATURES


    Original     		PDF VAC/50 90-140VAC/60Hz IR21592 ERJ-8GEY100KV ERJ-8GEY820KV L6561D IR21592 PC357NT PIC16F628P FMMT491ACT-ND pic16f628p ELECTRONIC BALLAST 4 LAMP SCHEMATIC npn MP transistor PIC16F628 dali bridge schematic L6561D fluorescent ballasts 36w TRANSISTOR dali power supply circuit diagram IR21592 IR21593

    Untitled

    Abstract: No abstract text available
    Text: ZMM5221B - ZMM5267B 500mW SURFACE MOUNT ZENER DIODE SPICE MODELS: ZMM5235B ZMM5260B ZMM5262B ZMM5267B Features • · · 500mW Power Dissipation Outline Similar to JEDEC DO-213AA Hemetic Glass Package C B A Mechanical Data · · · · · Case: MiniMELF Terminals: Solderable per MIL-STD-202,


    Original     		PDF ZMM5221B ZMM5267B 500mW ZMM5235B ZMM5260B ZMM5262B DO-213AA MIL-STD-202,

    AZC002-02N

    Abstract: ESD6V1 LL4148 nxp B20S CPDT-5V0U BZX844-C33 CPDU5V0 tsc 429 VDZ11B CZRU52C15
    Text: Comchip - Complete Cross Reference # Company Industry type Nearest Comchip equivalent 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60


    Original     		PDF 1N4148WT CDSU4148 1N4448HWT CDSU4448 1SMA4736 CZRA4736-G 1SMA4737 CZRA4737-G AZC002-02N ESD6V1 LL4148 nxp B20S CPDT-5V0U BZX844-C33 CPDU5V0 tsc 429 VDZ11B CZRU52C15

    CAT7105CA

    Abstract: mp1410es G547E2 G547H2 G547F2 P5504EDG equivalent G547I1 SP8K10 SP8K10SFD5TB LD1117Al
    Text: Diodes, Inc. - Cross Reference Industry Part Diodes, Inc. Equivalent Diodes, Inc. Nearest 1.5CE120C 1.5KE120CA N/A 1.5CE120CA 1.5KE120CA N/A 1.5CE12A 1.5KE12A N/A 1.5CE12C 1.5KE12CA N/A 1.5CE12CA 1.5KE12CA N/A 1.5CE13 1.5KE13A N/A 1.5CE130 1.5KE130A N/A 1.5CE130A


    Original     		PDF 5CE120C 5KE120CA 5CE120CA 5CE12A 5KE12A 5CE12C 5KE12CA 5CE12CA CAT7105CA mp1410es G547E2 G547H2 G547F2 P5504EDG equivalent G547I1 SP8K10 SP8K10SFD5TB LD1117Al

    DCM flyback transfer function

    Abstract: IRF640N FZT458 MSOP-10 SC4431 SC4809AIMSTR SC4809BIMSTR SC4809CIMSTR flyback transformer lg equivalent of irf640n
    Text: SC4809A/B/C High Performance Current Mode PWM Controller POWER MANAGEMENT Description Features The SC4809A/B/C is a 10 pin BICMOS primary side current mode controller for use in Isolated DC-DC and off-line switching power supplies. It is a highly integrated


    Original     		PDF SC4809A/B/C SC4809A/B/C devi1301A 01/100V 0/100V 0/16V LL4148 DCM flyback transfer function IRF640N FZT458 MSOP-10 SC4431 SC4809AIMSTR SC4809BIMSTR SC4809CIMSTR flyback transformer lg equivalent of irf640n

    Untitled

    Abstract: No abstract text available
    Text: ZMM5221B~ZMM5266B SURFACE MOUNT ZENER DIODES 2.4 to 68 Volts VOLTAGE POWER 500 mWatts FEATURES • Planar Die construction • 500mW Power Dissipation 0.063 1.6 • Lead free in comply with EU RoHS 2011/65/EU directives MECHANICAL DATA 0.020(0.5) 0.012(0.3)


    Original     		PDF ZMM5221B ZMM5266B 500mW 2011/65/EU MIL-STD-750, 2013-REV

    lnk304pn

    Abstract: LNK306PN top247yn LNK304PN equivalent lnk302pn LNK606PG PLC810PG FREE LNK304PN TOP250Y TOP250R
    Text: 2 11 D2 DL4007 FL1 Solid-State Lighting Solutions VR1 1 FL2 1.5KE200A AC-DC LED Driver ICs D8 MBRS4201T3G 3 D3 UF4007 R2 2 MΩ 1% R8 D6 150 Ω DL4936 1% 2 D4 SB3100 D LinkSwitch-PH U1 LNK406EG V D5 SS14 R5 3.01 kΩ 1% CONTROL S FB R4 49.9 kΩ 1% C5 22 µ


    Original     		PDF DL4007 5KE200A MBRS4201T3G UF4007 DL4936 SB3100 LNK406EG BAV21WS-7-F MMBT3904 ZMM5259B-7 lnk304pn LNK306PN top247yn LNK304PN equivalent lnk302pn LNK606PG PLC810PG FREE LNK304PN TOP250Y TOP250R

    diodes 5229

    Abstract: ZMM5221B ZMM5222B ZMM5223B ZMM5224B ZMM5225B ZMM5226B ZMM5267B zener IN 5232
    Text: ZMM5221B~ZMM5267B SURFACE MOUNT ZENER DIODES 2.4 to 75 Volts VOLTAGE POWER MINI-MELF/LL-34 500 mWatts Unit : inch mm FEATURES • Planar Die construction • 500mW Power Dissipation .063(1.6) • In compliance with EU RoHS 2002/95/EC directives MECHANICAL DATA


    Original     		PDF ZMM5221B ZMM5267B MINI-MELF/LL-34 500mW 2002/95/EC MIL-STD-750, diodes 5229 ZMM5222B ZMM5223B ZMM5224B ZMM5225B ZMM5226B ZMM5267B zener IN 5232

    schematic diagram atx Power supply 500w

    Abstract: pioneer PAL 012A 1000w inverter PURE SINE WAVE schematic diagram 600va numeric ups circuit diagrams winbond bios 25064 TLE 9180 infineon smsc MEC 1300 nu TBE schematic diagram inverter 2000w DK55 circuit diagram of luminous 600va UPS
    Text: QUICK INDEX NEW IN THIS ISSUE! Detailed Index - See Pages 3-24 Digital Signal Processors, iCoupler , iMEMS® and iSensor . . . . . 805, 2707, 2768-2769 Connectors, Cable Assemblies, IC Sockets . . . . . . . . . . . 28-568 RF Connectors . . . . . . . . . . . . . . . . . . . . . . Pages 454-455


    Original     		PDF P462-ND P463-ND LNG295LFCP2U LNG395MFTP5U US2011) schematic diagram atx Power supply 500w pioneer PAL 012A 1000w inverter PURE SINE WAVE schematic diagram 600va numeric ups circuit diagrams winbond bios 25064 TLE 9180 infineon smsc MEC 1300 nu TBE schematic diagram inverter 2000w DK55 circuit diagram of luminous 600va UPS

    DO-213AA

    Abstract: ZMM5221B ZMM5222B ZMM5235B ZMM5260B ZMM5262B ZMM5267B
    Text: ZMM5221B - ZMM5267B 500mW SURFACE MOUNT ZENER DIODE SPICE MODEL: ZMM5235B ZMM5260B ZMM5262B Features • · · 500mW Power Dissipation Outline Similar to JEDEC DO-213AA Hemetic Glass Package C B A Mechanical Data · · · · · Case: MiniMELF Terminals: Solderable per MIL-STD-202,


    Original     		PDF ZMM5221B ZMM5267B 500mW ZMM5235B ZMM5260B ZMM5262B DO-213AA MIL-STD-202, DS30024 DO-213AA ZMM5222B ZMM5262B ZMM5267B

    zener diode numbering system

    Abstract: ZMM5224B zener 3,5 ZMM5232B MELF ZMM52 ZMM5221B ZMM5222B ZMM5223B ZMM5225B ZMM5227B
    Text: JGD ZMM52 - SERIES O SURFACE MOUNT ZENERDIODES/MINI MELF Nominal zener Voltage Vz at Izt* Volts 2 .4 ZMM5221B 2 .5 ZMM5222B 2.7 ZMM5223B 2.8 ZMM5224B 3 .0 ZMM5225B ZMM5226B 3.3 3 .6 ZMM5227B ZMM5228B 3 .9 4 .3 ZMM5229B 4 .7 ZMM5230B 5.1 ZMM5231B 5.6 ZMM5232B


    OCR Scan     		PDF ZMM52 ZMM5221B ZMM5222B ZMM5223B ZMM5224B ZMM5225B ZMM5226B ZMM5227B ZMM5228B ZMM5229B zener diode numbering system zener 3,5 ZMM5232B MELF