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

    ZPD22 Search Results

    SF Impression Pixel

    ZPD22 Price and Stock

    ROHM Semiconductor SDR03EZPD22R0

    HIGH ANTI-SURGE THICK FILM CHIP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SDR03EZPD22R0 Cut Tape 14,494 1
    • 1 $0.22
    • 10 $0.112
    • 100 $0.0645
    • 1000 $0.04158
    • 10000 $0.04158
    Buy Now
    SDR03EZPD22R0 Reel 5,000 5,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.03004
    Buy Now
    Mouser Electronics SDR03EZPD22R0 10,800
    • 1 $0.22
    • 10 $0.075
    • 100 $0.047
    • 1000 $0.037
    • 10000 $0.025
    Buy Now
    Chip1Stop SDR03EZPD22R0 Cut Tape 5,000
    • 1 -
    • 10 -
    • 100 $0.0593
    • 1000 $0.0276
    • 10000 $0.0231
    Buy Now
    CoreStaff Co Ltd SDR03EZPD22R0 4,000
    • 1 $0.093
    • 10 $0.069
    • 100 $0.032
    • 1000 $0.019
    • 10000 $0.019
    Buy Now

    ROHM Semiconductor SDR03EZPD2202

    HIGH ANTI-SURGE THICK FILM CHIP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SDR03EZPD2202 Cut Tape 9,556 1
    • 1 $0.22
    • 10 $0.112
    • 100 $0.0645
    • 1000 $0.04158
    • 10000 $0.04158
    Buy Now
    SDR03EZPD2202 Reel 5,000 5,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.01994
    Buy Now
    Mouser Electronics SDR03EZPD2202 7,380
    • 1 $0.22
    • 10 $0.073
    • 100 $0.047
    • 1000 $0.037
    • 10000 $0.022
    Buy Now
    Chip1Stop SDR03EZPD2202 Cut Tape 5,000
    • 1 -
    • 10 -
    • 100 $0.0432
    • 1000 $0.0305
    • 10000 $0.0201
    Buy Now
    CoreStaff Co Ltd SDR03EZPD2202 4,300
    • 1 $0.093
    • 10 $0.069
    • 100 $0.032
    • 1000 $0.019
    • 10000 $0.019
    Buy Now

    ROHM Semiconductor ESR18EZPD2211

    RES 2.21K OHM 0.5% 1/2W 1206
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey ESR18EZPD2211 Reel 5,000 5,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.04154
    Buy Now
    ESR18EZPD2211 Cut Tape 5,000 1
    • 1 $0.28
    • 10 $0.146
    • 100 $0.0859
    • 1000 $0.05645
    • 10000 $0.05645
    Buy Now
    ESR18EZPD2211 Digi-Reel 5,000 1
    • 1 $0.28
    • 10 $0.146
    • 100 $0.0859
    • 1000 $0.05645
    • 10000 $0.05645
    Buy Now
    Mouser Electronics ESR18EZPD2211 10,000
    • 1 $0.28
    • 10 $0.1
    • 100 $0.063
    • 1000 $0.048
    • 10000 $0.034
    Buy Now
    CoreStaff Co Ltd ESR18EZPD2211 5,000
    • 1 $0.141
    • 10 $0.141
    • 100 $0.077
    • 1000 $0.025
    • 10000 $0.025
    Buy Now

    ROHM Semiconductor ESR10EZPD2210

    RES 221 OHM 0.5% 1/2W 0805
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey ESR10EZPD2210 Cut Tape 5,000 1
    • 1 $0.24
    • 10 $0.125
    • 100 $0.0727
    • 1000 $0.04724
    • 10000 $0.04724
    Buy Now
    ESR10EZPD2210 Reel 5,000 5,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.0344
    Buy Now
    ESR10EZPD2210 Digi-Reel 5,000 1
    • 1 $0.24
    • 10 $0.125
    • 100 $0.0727
    • 1000 $0.04724
    • 10000 $0.04724
    Buy Now
    Mouser Electronics ESR10EZPD2210 10,000
    • 1 $0.24
    • 10 $0.085
    • 100 $0.053
    • 1000 $0.039
    • 10000 $0.029
    Buy Now
    CoreStaff Co Ltd ESR10EZPD2210 5,000
    • 1 $0.108
    • 10 $0.108
    • 100 $0.072
    • 1000 $0.021
    • 10000 $0.017
    Buy Now

    ROHM Semiconductor ESR03EZPD2202

    RES 22K OHM 0.5% 1/4W 0603
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey ESR03EZPD2202 Cut Tape 4,998 1
    • 1 $0.23
    • 10 $0.116
    • 100 $0.0672
    • 1000 $0.04348
    • 10000 $0.04348
    Buy Now
    ESR03EZPD2202 Digi-Reel 4,998 1
    • 1 $0.23
    • 10 $0.116
    • 100 $0.0672
    • 1000 $0.04348
    • 10000 $0.04348
    Buy Now
    Mouser Electronics ESR03EZPD2202 9,820
    • 1 $0.23
    • 10 $0.078
    • 100 $0.049
    • 1000 $0.039
    • 10000 $0.026
    Buy Now
    CoreStaff Co Ltd ESR03EZPD2202 15,000
    • 1 $0.134
    • 10 $0.073
    • 100 $0.052
    • 1000 $0.045
    • 10000 $0.045
    Buy Now
    ESR03EZPD2202 4,689
    • 1 $0.131
    • 10 $0.131
    • 100 $0.076
    • 1000 $0.024
    • 10000 $0.02
    Buy Now
    ESR03EZPD2202 30
    • 1 $0.134
    • 10 $0.073
    • 100 $0.052
    • 1000 $0.045
    • 10000 $0.045
    Buy Now

    ZPD22 Datasheets (14)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    ZPD22 Chenyi Electronics 0.5W SILICON PLANAR ZENER DIODES Original PDF
    ZPD22 Diodes Silicon Planar Zener Diode Original PDF
    ZPD22 Diotec Silicon Planar Zener Diodes Original PDF
    ZPD22 EIC Semiconductor Zener Diodes Original PDF
    ZPD22 General Semiconductor Zener Diodes Original PDF
    ZPD22 Good-Ark Zener Diode Original PDF
    ZPD22 Good-Ark Silicon Planar Zener Diode Original PDF
    ZPD22 Fairchild Semiconductor Full Line Condensed Catalogue 1977 Scan PDF
    ZPD22 Honey Technology Silicon Planar Zener Diode Scan PDF
    ZPD22 Unknown Catalog Scans - Shortform Datasheet Scan PDF
    ZPD22 Unknown Shortform Semicon, Diode, and SCR Datasheets Short Form PDF
    ZPD22 Unknown Cross Reference Datasheet Scan PDF
    ZPD22RL Unknown Cross Reference Datasheet Scan PDF
    ZPD22SB14686 General Semiconductor Zener Diode Original PDF

    ZPD22 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    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

    2 zpd1 160 zener

    Abstract: zener zpd39 ZPD5.6 DIODE zpd68 ZPD8.2 zpd15 zpd24 zpd3.9 zpd1 ZPD6.2
    Text: ZPD1 thru ZPD75 Zener Diodes VZ Range 1.0, 2.7 to 75V Power Dissipation 500mW DO-204AH DO-35 Glass Features • Silicon Planar Zener Diodes. • The Zener voltages are graded according to the international E 12 standard. Offered with either 5% or 2% tolerance. Smaller voltage tolerances and


    Original
    PDF ZPD75 500mW DO-204AH DO-35 ZMM75. D7/10K 20K/box D8/10K 20K/box 2 zpd1 160 zener zener zpd39 ZPD5.6 DIODE zpd68 ZPD8.2 zpd15 zpd24 zpd3.9 zpd1 ZPD6.2

    Zener ZPD

    Abstract: zpd 6.2 zener 4.3 ZPD Zener ZPD 3.3 ZPD 6v2 Zener ZPD 20 volt zpd 8,2 v zener diode zpd 6 Zener ZPD 7.5 zpd 4,7 v
    Text: ZPD 2V7B.ZPD 62B SILICON PLANAR ZENER DIODES The Zener voltages are graded according to the international E24 standard. Smaller voltage tolerances and higher Zener voltages are upon request. Absolute Maximum Ratings Ta = 25oC Symbol Value Unit Ptot 500


    Original
    PDF ZPD10B ZPD12B ZPD15B ZPD18B ZPD22B ZPD27B ZPD33B ZPD36B Zener ZPD zpd 6.2 zener 4.3 ZPD Zener ZPD 3.3 ZPD 6v2 Zener ZPD 20 volt zpd 8,2 v zener diode zpd 6 Zener ZPD 7.5 zpd 4,7 v

    zener diode zpd 6

    Abstract: No abstract text available
    Text: ZPD2B7 . ZPD47B 500 mW / ±2% ZPD2B7 . ZPD47B (500 mW / ±2%) Silicon Planar Zener Diodes Silizium-Planar-Zener-Dioden Version 2006-12-01 Maximum power dissipation Maximale Verlustleistung 3.9 62.5 Ø 1.9 500 mW Nominal Z-voltage Nominale Z-Spannung


    Original
    PDF ZPD47B DO-35 OD-27) ZPD47B ZPD30B ZPD33B ZPD36B ZPD39B ZPD43B zener diode zpd 6

    ZPD10

    Abstract: ZPD11 ZPD12 ZPD13 ZPD15 ZPD16 ZPD18 ZPD20 ZPD22 ZPD24
    Text: ZPD2.7 THRU ZPD51 SILICON PLANAR ZENER DIODES Features Silicon Planar Zener Diodes The Zener voltages are graded according to the international E 24 standard. Smaller voltage tolerances and higher Zener voltages on request. DIM ENSIONS inches DIM Absolute Maximum Ratings


    Original
    PDF ZPD51 ZPD33 ZPD36 ZPD39 ZPD43 ZPD47 ZPD10 ZPD11 ZPD12 ZPD13 ZPD15 ZPD16 ZPD18 ZPD20 ZPD22 ZPD24

    ZPD51

    Abstract: ZPD8.2 5W zener diode ZPD10 ZPD11 ZPD12 ZPD13 ZPD15 ZPD16 ZPD18
    Text: CE ZPD2.7 THRU ZPD51 CHENYI ELECTRONICS 0.5W SILICON PLANAR ZENER DIODES FEATURES . The zener voltage are gaded accrding to the intermational E24 standard. Over voltage tolerance and higher zener voltage on request MECHANICAL DATA . Case: DO-35 glass case


    Original
    PDF ZPD51 DO-35 ZPD43 ZPD47 ZPD51 ZPD8.2 5W zener diode ZPD10 ZPD11 ZPD12 ZPD13 ZPD15 ZPD16 ZPD18

    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

    zpd27

    Abstract: ZPD10 ZPD11 ZPD12 ZPD13 ZPD15 ZPD16 ZPD51 ZPD8.2 zpd1
    Text: ZPD1 - ZPD51 SILICON PLANAR ZENER DIODE Features • · · Planar Die Construction Hermetically Sealed Glass Case 0.7V - 51V Nominal Zener Voltages B A · · · C D Mechanical Data · · A Case: Glass, DO-35 Leads: Solderable per MIL-STD-202, Method 208 Polarity: Cathode Band


    Original
    PDF ZPD51 DO-35 MIL-STD-202, DS21402 ZPD43 ZPD47 ZPD39 ZPD36 ZPD12 zpd27 ZPD10 ZPD11 ZPD12 ZPD13 ZPD15 ZPD16 ZPD51 ZPD8.2 zpd1

    ZPD5V6

    Abstract: ZPD4V7 ZPD6v8 ZPD3V3 ZPD5V1 ZPD6V2 ZPD8V2 ZPD9V1 ZPD7V5 zener diode ZPD2V7
    Text: ZPD1.ZPD75 SILICON PLANAR ZENER DIODES Absolute Maximum Ratings Ta = 25 OC Parameter Symbol Power Dissipation Ptot Value Unit 1) mW 500 Junction Temperature Tj 175 O Storage Temperature Range TS -55 to +175 O 1) C C Valid provided that leads are kept at ambient temperature at a distance of 8 mm from case


    Original
    PDF ZPD75 ZPD5V6 ZPD4V7 ZPD6v8 ZPD3V3 ZPD5V1 ZPD6V2 ZPD8V2 ZPD9V1 ZPD7V5 zener diode ZPD2V7

    ZPD4V7

    Abstract: ZPD6V2 ZPD5V6 ZPD2V7 ZPD75B Zener ZPD 3.3 zener diode zpd 6 ZPD3V6 ZPD56B zpd 6.2 zener
    Text: ZPD2V7B.ZPD75B SILICON PLANAR ZENER DIODES Max. 0.5 Min. 27.5 Max. 1.9 Black Cathode Band Black Part No. Black "ST" Brand XXX Max. 3.9 ST Min. 27.5 Glass Case DO-35 Dimensions in mm Absolute Maximum Ratings Ta = 25 OC Parameter Symbol Power Dissipation


    Original
    PDF ZPD75B DO-35 ZPD10B ZPD12B ZPD15B ZPD18B ZPD22B ZPD27B ZPD33B ZPD4V7 ZPD6V2 ZPD5V6 ZPD2V7 ZPD75B Zener ZPD 3.3 zener diode zpd 6 ZPD3V6 ZPD56B zpd 6.2 zener

    STF12A80

    Abstract: BSTC1026 BSTD1046 BTB04-600SAP STF6A80 BSTD1040 TO510DH BSTC1040 TO812NJ BTB15-700B
    Text: Cross Reference For the most up to date cross reference, go to the product portal: Manufacturer type number Manufacturer Philips type number Page number Manufacturer type number Manufacturer


    Original
    PDF 02CZ10 02CZ11 02CZ12 02CZ13 02CZ15 02CZ16 02CZ18 02CZ2 02CZ20 STF12A80 BSTC1026 BSTD1046 BTB04-600SAP STF6A80 BSTD1040 TO510DH BSTC1040 TO812NJ BTB15-700B

    ZPD2.7

    Abstract: No abstract text available
    Text: ZPD2.7 . ZPD75 500 mW ZPD2.7 . ZPD75 (500 mW) Silicon Planar Zener Diodes Silizium-Planar-Zener-Dioden Version 2012-07-03 Maximum power dissipation Maximale Verlustleistung 3.9 62.5 ±0.4 ±3 Ø 1.9±0.1 Ø max 0.5 500 mW Nominal Z-voltage Nominale Z-Spannung


    Original
    PDF ZPD75 DO-35 OD-27) ZMM75 ZPD2.7

    ZPD20B

    Abstract: No abstract text available
    Text: ZPD2B7 . ZPD47B 500 mW / ±2% ZPD2B7 . ZPD47B (500 mW / ±2%) Silicon Planar Zener Diodes Silizium-Planar-Zener-Dioden Version 2012-05-10 Maximum power dissipation Maximale Verlustleistung 3.9 62.5 Ø 1.9 Ø max 0.5 500 mW Nominal Z-voltage Nominale Z-Spannung


    Original
    PDF ZPD47B DO-35 OD-27) ZPD47B ZPD20B

    ZPD6,2

    Abstract: No abstract text available
    Text: Zener Diodes ZPD and ZMM Series 500 mW Zener Diodes ZPD11 ZPD2.7 ZPD3 ZPD3.3 ZPD3.6 ZPD3.9 ZPD4.3 ZPD4.7 ZPD5.1 ZPD5,6 ZPD6.2 ZPD6.8 ZPD7.5 ZPD8,2 ZPD9,1 ZPD10 ZPD11 ZPD12 ZPD13 ZPD15 ZPD16 ZPD18 ZPD20 ZPD22 ZPD24 ZPD27 ZPD30 ZPD33 ZPD36 ZPD39 ZPD43 ZPD47


    OCR Scan
    PDF ZPD51 DO-35 ZMM51 ZPD11 ZPD10 ZPD11 ZPD12 ZPD13 ZPD15 ZPD16 ZPD6,2

    zpd 6.2 zener

    Abstract: ZPD10 equivalent BKC Semiconductors
    Text: DO-35 glass 0.5 Watt Use Advantages a ZPD2,7 Zener Diodes thru ZPD51 This family is equivalent to the European PRO Electron types. The specifications reflect similar low zener test currents over voltage ranges. For use in clipping and stabilizing circuits, where real protection is needed.


    OCR Scan
    PDF DO-35 ZPD51 LL-34/35 zpd 6.2 zener ZPD10 equivalent BKC Semiconductors

    Untitled

    Abstract: No abstract text available
    Text: 4684955 I T T SEMICONDUCTORS ZENER DIODES _ 87D 02 3 3 6 a? dFI^am tss □□os3Bb D 7 ZPD Series 500 mW Glass Zener Diodes in DO-35 Package TA = 25 °C Type ZPD1 ZPD2.7 ZPD3 ZPD3.3 ZPD3.6 ZPD3.9 ZPD4.3 ZPD4.7 ZPD5.1 ZPD5.6 ZPD6.2 ZPD6.8 ZPD7,5 ZPD8,2


    OCR Scan
    PDF DO-35

    triac zd 607

    Abstract: 1n5204 CA2820 TRW 2N4427 equivalent bfr91 2N6823 842 317 SO8 BD243 PINOUT BD529 bf506 BF845
    Text: MASTER SELECTION GUIDE EUROPEAN SUPPLEMENT This is the European supplement to the USA edition of the Master Selection Guide, SG73/D REV 3. It should be read along with the USA edition. The supplement carries amendments to sections 1 and 5 in the USA edition.


    OCR Scan
    PDF SG73/D triac zd 607 1n5204 CA2820 TRW 2N4427 equivalent bfr91 2N6823 842 317 SO8 BD243 PINOUT BD529 bf506 BF845

    diode zener 85 c 12 k3

    Abstract: zpd diode zener diode zpd 6
    Text: ZENER DIODES 5 0 0 m W ZPD1 / ZPD7S CASE TYPE: D 0204AH (Glass DO-35) Dynamic Resistance Zener Voltage!1) at Iz = 5 mA at Iz = 5 mA f = 1 kHz tzj Q at Iz = 1 mA f = 1 kHz rzj a Admissible Zener current*2) Temp. Coeff. of Zener Voltage at Iz = 5 mA Reverse


    OCR Scan
    PDF 0204AH DO-35) ZPD10 ZPD11 ZPD12 ZPD13 ZPD15 ZPD16 ZPD18 ZPD20 diode zener 85 c 12 k3 zpd diode zener diode zpd 6

    ZPD13

    Abstract: No abstract text available
    Text: Zener Diodes 500mW Zener Diodes/DO-35 TYPE NUMBER Zens*.'.;.; Maximum Zener Impedance ,v-"'fDwWfftv V2 @ ICT Volts ZPD2.7 ZPD3.0 ZPD3.3 25-2.9 2,8-32 3.1-3.5 •/ Zzt @ lZT izT -0mA Reverse Voltage @ Ir=0.1|jA Maximum Zener Current IzM mA @ l^ Vr %/°C Volts


    OCR Scan
    PDF 500mW Diodes/DO-35 ZPD10 ZPD11 ZPD12 ZPD13 ZPD15 ZPD16 ZPD18 ZPD20

    Zener diode ZTK

    Abstract: No abstract text available
    Text: Temperature-Compensated Stabilizing Circuits Two Zener diode parameters in particular affect the stabilizer performance - the voltage temperature coefficient avz and the differential resistance rzj. These parameters are determined by the physical properties of the conven­


    OCR Scan
    PDF ZPD22. Zener diode ZTK

    Untitled

    Abstract: No abstract text available
    Text: ZPD1 - ZPD51 SILICON PLANAR ZENER DIODE Features_ • Planar Die Construction • • Hermetically Sealed Glass Case 0.7V - 51V Nominal Zener Voltages Mechanical Data_ • • • • Case: Glass, DO-35 Leads: Solderable per M IL-STD-202, Method 208


    OCR Scan
    PDF ZPD51 DO-35 IL-STD-202, ZPD33 ZPD39 DS21402 ZPD1-ZPD51

    ZPD13

    Abstract: zpd1-zpd51 ZPD8.2 Zener I5c ZPD10 ZPD11 ZPD12 ZPD15 ZPD16
    Text: ZPD1- ZPD51 SILICON PLANAR ZENER DIODE Features • • • Planar Die Construction Hermetically Sealed Glass Case 0.7V - 51V Nominal Zener Voltages Mechanical Data • • • • • D Case: Glass, DO-35 Leads: Solderable per MIL-STD-202, Method 208 Polarity: Cathode Band


    OCR Scan
    PDF ZPD1-ZPD51 DO-35 DO-35 MIL-STD-202, ZPD39 ZPD51 DS21402 ZPD1-ZPD51 ZPD13 ZPD8.2 Zener I5c ZPD10 ZPD11 ZPD12 ZPD15 ZPD16

    Untitled

    Abstract: No abstract text available
    Text: Zener Diodes Z P D . S Series 500 mW Zener Diodes DO-34 Glass Package TA = 25 °C Type ZPD1S1) ZPD2.7S ZPD3S ZPD3.3S ZPD3.6S ZPD3.9S ZPD4.3S ZPD4.7S ZPD5.1S ZPD5.6S ZPD6.2S ZPD6.8S ZPD7.5S ZPD8.2S ZPD9.1S ZPD10S ZPD11S ZPD12S ZPD13S ZPD15S ZPD16S ZPD18S


    OCR Scan
    PDF DO-34 ZPD10S ZPD11S ZPD12S ZPD13S ZPD15S ZPD16S ZPD18S ZPD20S ZPD22S

    ZPO 3,3

    Abstract: Zener ZPD Zener ZPD 3.3 zener diode zpd 9.1 zener diode zpd 6 zpd diode zpd 6.2 zener zp033 ZPD12 zener diode zpd 10
    Text: ZPD 2.7 . ZPD 51 SILICON PLANAR ZENER DIODES Silicon Expitaxial Planar Diode The Zener voltages are graded according to the international E 24 standard. Smaller voltage tolerances and higher Zener voltages on request. max. 1.90 Cathode Mark in White max. 0.520


    OCR Scan
    PDF DO-35 ZPO 3,3 Zener ZPD Zener ZPD 3.3 zener diode zpd 9.1 zener diode zpd 6 zpd diode zpd 6.2 zener zp033 ZPD12 zener diode zpd 10