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

    2N4859JAN Search Results

    SF Impression Pixel

    2N4859JAN Price and Stock

    Intersil Corporation JAN2N4859

    JFET Transistor, N-Channel, TO-18 (Also Known As: 2N4859JAN)
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Quest Components JAN2N4859 887
    • 1 $8.1
    • 10 $8.1
    • 100 $8.1
    • 1000 $2.97
    • 10000 $2.97
    		Buy Now

    Vishay Siliconix JAN2N4859

    JFET Transistor, N-Channel, TO-18 (Also Known As: 2N4859JAN)
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Quest Components JAN2N4859 276
    • 1 $12.3282
    • 10 $12.3282
    • 100 $9.5886
    • 1000 $8.7667
    • 10000 $8.7667
    		Buy Now
    JAN2N4859 177
    • 1 $8.1
    • 10 $8.1
    • 100 $4.995
    • 1000 $4.995
    • 10000 $4.995
    		Buy Now
    JAN2N4859 48
    • 1 $8.1
    • 10 $4.05
    • 100 $4.05
    • 1000 $4.05
    • 10000 $4.05
    		Buy Now
    JAN2N4859 25
    • 1 $15.6
    • 10 $15.6
    • 100 $15.6
    • 1000 $15.6
    • 10000 $15.6
    		Buy Now

    Hughes Microelectronics JAN2N4859

    JFET Transistor, N-Channel, TO-18 (Also Known As: 2N4859JAN)
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Quest Components JAN2N4859 200
    • 1 $8.1
    • 10 $8.1
    • 100 $3.51
    • 1000 $3.24
    • 10000 $3.24
    		Buy Now

    Teledyne Defense Electronics JAN2N4859

    JFET Transistor, N-Channel, TO-18 (Also Known As: 2N4859JAN)
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Quest Components JAN2N4859 19
    • 1 $12.3282
    • 10 $10.9584
    • 100 $10.9584
    • 1000 $10.9584
    • 10000 $10.9584
    		Buy Now

    Texas Instruments JAN2N4859

    JFET Transistor, N-Channel, TO-18 (Also Known As: 2N4859JAN)
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Quest Components JAN2N4859 4
    • 1 $12.3282
    • 10 $11.5063
    • 100 $11.5063
    • 1000 $11.5063
    • 10000 $11.5063
    		Buy Now
    Find more 2N4859JAN price and stock on Findchips.com

    2N4859JAN Datasheets (10)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    2N4859JAN New England Semiconductor POWER MOSFET N CHANNEL Original PDF
    2N4859JAN Vishay Siliconix N-Channel JFETs Original PDF
    2N4859JAN Vishay Telefunken TRANS JFET N-CH 175MA 3TO-206AA Original PDF
    2N4859JAN Unknown Shortform Datasheet & Cross References Data Short Form PDF
    2N4859JAN Unknown Semiconductor Master Cross Reference Guide Scan PDF
    2N4859JANTX Vishay Intertechnology N-Channel JFET Original PDF
    2N4859JANTX Vishay Siliconix N-Channel JFETs Original PDF
    2N4859JANTX Unknown Semiconductor Master Cross Reference Guide Scan PDF
    2N4859JANTXV Vishay Intertechnology N-Channel JFET Original PDF
    2N4859JANTXV Vishay Siliconix N-Channel JFETs Original PDF

    2N4859JAN Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    2N4858 VISHAY

    Abstract: 2n4856 jantx 2N4856 2N4856JAN 2N4856JANTX 2N4857JAN 2N4857JANTX 2N4858JAN 2N4858JANTX 2N4859JAN
    Text: 2N4856JAN/JANTX/JANTXV Series Vishay Siliconix N-Channel JFETs 2N4856JAN 2N4856JANTX 2N4856JANTXV 2N4857JAN 2N4857JANTX 2N4857JANTXV 2N4858JAN 2N4858JANTX 2N4858JANTXV 2N4859JAN 2N4859JANTX 2N4859JANTXV 2N4860JAN 2N4860JANTX 2N4860JANTXV 2N4861JAN 2N4861JANTX


    Original     		PDF 2N4856JAN/JANTX/JANTXV 2N4856JAN 2N4856JANTX 2N4856JANTXV 2N4857JAN 2N4857JANTX 2N4857JANTXV 2N4858JAN 2N4858JANTX 2N4858JANTXV 2N4858 VISHAY 2n4856 jantx 2N4856 2N4856JAN 2N4856JANTX 2N4857JAN 2N4857JANTX 2N4858JAN 2N4858JANTX 2N4859JAN

    2N4856JAN

    Abstract: 2N4856JANTX 2N4857JAN 2N4857JANTX 2N4858JAN 2N4858JANTX 2N4859JAN 2N4859JANTX 2N4860JAN 2N4860JANTX
    Text: 2N4856 JAN/JANTX/JANTXV Series Siliconix NĆChannel JFETs Product Summary Part Number 2N4856JAN 2N4857JAN 2N4858JAN 2N4859JAN 2N4860JAN 2N4861JAN VGS off (V) V(BR)GSS Min (V) 2N4856JANTX 2N4857JANTX 2N4858JANTX 2N4859JANTX 2N4860JANTX 2N4861JANTX 2N4856JANTXV


    Original     		PDF 2N4856 2N4856JAN 2N4857JAN 2N4858JAN 2N4859JAN 2N4860JAN 2N4861JAN 2N4856JANTX 2N4857JANTX 2N4858JANTX 2N4856JAN 2N4856JANTX 2N4857JAN 2N4857JANTX 2N4858JAN 2N4858JANTX 2N4859JAN 2N4859JANTX 2N4860JAN 2N4860JANTX

    2N4856JAN

    Abstract: 2N4856JANTX 2N4857JAN 2N4857JANTX 2N4858JAN 2N4858JANTX 2N4859JAN 2N4859JANTX 2N4860JAN 2N4861JAN
    Text: 2N4856JAN/JANTX/JANTXV Series Vishay Siliconix N-Channel JFETs 2N4856JAN 2N4856JANTX 2N4856JANTXV 2N4857JAN 2N4857JANTX 2N4857JANTXV 2N4858JAN 2N4858JANTX 2N4858JANTXV 2N4859JAN 2N4859JANTX 2N4859JANTXV 2N4860JAN 2N4860JANTX 2N4860JANTXV 2N4861JAN 2N4861JANTX


    Original     		PDF 2N4856JAN/JANTX/JANTXV 2N4856JAN 2N4856JANTX 2N4856JANTXV 2N4857JAN 2N4857JANTX 2N4857JANTXV 2N4858JAN 2N4858JANTX 2N4858JANTXV 2N4856JAN 2N4856JANTX 2N4857JAN 2N4857JANTX 2N4858JAN 2N4858JANTX 2N4859JAN 2N4859JANTX 2N4860JAN 2N4861JAN

    2n4856 jantx

    Abstract: Siliconix N-Channel JFETs 2N4857 2N4858 equivalent 2n4861 datasheet Dual N-Channel JFET jfet 4856 2N4860JAN 2N4861JAN 2N4856
    Text: 2N4856JAN/JANTX/JANTXV Series N-Channel JFETs 2N4856JAN 2N4857JAN 2N4858JAN 2N4859JAN 2N4860JAN 2N4861JAN 2N4856JANTX 2N4857JANTX 2N4858JANTX 2N4859JANTX 2N4860JANTX 2N4861JANTX 2N4856JANTXV 2N4857JANTXV 2N4858JANTXV 2N4859JANTXV 2N4860JANTXV 2N4861JANTXV


    Original     		PDF 2N4856JAN/JANTX/JANTXV 2N4856JAN 2N4857JAN 2N4858JAN 2N4859JAN 2N4860JAN 2N4861JAN 2N4856JANTX 2N4857JANTX 2N4858JANTX 2n4856 jantx Siliconix N-Channel JFETs 2N4857 2N4858 equivalent 2n4861 datasheet Dual N-Channel JFET jfet 4856 2N4860JAN 2N4861JAN 2N4856

    2N4858

    Abstract: 2N4857 2N4858 equivalent 2N4856 2N4856JAN 2N4857JAN 2N4858JAN 2N4859 2N4859JAN 2N4860JAN
    Text: 2N4856JAN/JANTX/JANTXV Series N-Channel JFETs 2N4856JAN 2N4857JAN 2N4858JAN 2N4859JAN 2N4860JAN 2N4861JAN 2N4856JANTX 2N4857JANTX 2N4858JANTX 2N4859JANTX 2N4860JANTX 2N4861JANTX 2N4856JANTXV 2N4857JANTXV 2N4858JANTXV 2N4859JANTXV 2N4860JANTXV 2N4861JANTXV


    Original     		PDF 2N4856JAN/JANTX/JANTXV 2N4856JAN 2N4857JAN 2N4858JAN 2N4859JAN 2N4860JAN 2N4861JAN 2N4856JANTX 2N4857JANTX 2N4858JANTX 2N4858 2N4857 2N4858 equivalent 2N4856 2N4856JAN 2N4857JAN 2N4858JAN 2N4859 2N4859JAN 2N4860JAN

    2N4856

    Abstract: 2N4858JAN 2N4856JAN 2N4857 2N4857JAN 2N4858 2N4859 2N4859JAN 2N4860JAN 2N4861JAN
    Text: 2N4856JAN/JANTX/JANTXV Series N-Channel JFETs 2N4856JAN 2N4857JAN 2N4858JAN 2N4859JAN 2N4860JAN 2N4861JAN 2N4856JANTX 2N4857JANTX 2N4858JANTX 2N4859JANTX 2N4860JANTX 2N4861JANTX 2N4856JANTXV 2N4857JANTXV 2N4858JANTXV 2N4859JANTXV 2N4860JANTXV 2N4861JANTXV


    Original     		PDF 2N4856JAN/JANTX/JANTXV 2N4856JAN 2N4857JAN 2N4858JAN 2N4859JAN 2N4860JAN 2N4861JAN 2N4856JANTX 2N4857JANTX 2N4858JANTX 2N4856 2N4858JAN 2N4856JAN 2N4857 2N4857JAN 2N4858 2N4859 2N4859JAN 2N4860JAN 2N4861JAN

    Untitled

    Abstract: No abstract text available
    Text: 2N4856JAN/JANTX/JANTXV Series Vishay Siliconix N-Channel JFETs 2N4856JAN 2N4856JANTX 2N4856JANTXV 2N4857JAN 2N4857JANTX 2N4857JANTXV 2N4858JAN 2N4858JANTX 2N4858JANTXV 2N4859JAN 2N4859JANTX 2N4859JANTXV 2N4860JAN 2N4860JANTX 2N4860JANTXV 2N4861JAN 2N4861JANTX


    Original     		PDF 2N4856JAN/JANTX/JANTXV 2N4856JAN 2N4857JAN 2N4858JAN 2N4859JAN 2N4860JAN 2N4861JAN 2N4856JANTX 2N4857JANTX 2N4858JANTX

    FET package TO-71

    Abstract: SST271 2N4416A JANTX TO72 package n-channel jfet jfet 2N5198 3N164 BSS92 TP2020L VP0808L VP2020L
    Text: Transistors Siliconix Part Number V BR DSS Min (V) rDS(on) Max (W) VGS(th) Max (V) tON Max (ns) Ciss Typ (pF) ID Max (A) PD Max (W) –80 –100 –120 –200 –200 –200 –240 5 5 20 20 20 20 10 –4.5 –4.5 –2.4 –2.8 –2.5 –2.4 –2.5 55 55 25


    Original     		PDF O-226AA VP0808L VP1008L TP1220L BSS92 VP2020L TP2020L VP2410L O-206AF 3N164 FET package TO-71 SST271 2N4416A JANTX TO72 package n-channel jfet jfet 2N5198 3N164 BSS92 TP2020L VP0808L VP2020L

    TEMIC K153P

    Abstract: TSHF5471 tfmw5380 dn1328 tdsr5156 dn904 TDSR5153 HS0038 IR sensor TLVD4900 TCDF1910
    Text: Quality and Reliability Report 1997 TEMIC Semiconductors 07.97 Table of Contents TEMIC Quality Policy .1 Quality System .2


    Original     		PDF WN1053 WN1087-18R WN1087-TR1 WN1090 WN1125 WN1142 WN1158-TA WN1165-TR1 WN1170 WN934 TEMIC K153P TSHF5471 tfmw5380 dn1328 tdsr5156 dn904 TDSR5153 HS0038 IR sensor TLVD4900 TCDF1910

    JFET TRANSISTOR REPLACEMENT GUIDE j201

    Abstract: UA6538 DC motor speed control using 555 and ir sensor U2740B-FP UAA145 CQY80 U2840B tcrt9050 TCDF1910 sod80 smd zener diode color band
    Text: Semiconductors Technical Library March 1996 Back Products Overview Communications Automotive Computer Industrial Broadcast Media Aerospace & Defense Communications Applications Telephone ICs Type U3750BM–CP Package 44–pin PLCC Function One chip telephone


    Original     		PDF U3750BM U3760MB-FN U3760MB-SD SSO-44 SD-40 U3800BM U3810BM U4030B U4030B JFET TRANSISTOR REPLACEMENT GUIDE j201 UA6538 DC motor speed control using 555 and ir sensor U2740B-FP UAA145 CQY80 U2840B tcrt9050 TCDF1910 sod80 smd zener diode color band

    P-Channel Depletion-Mode

    Abstract: MD80C31 JANTX2N4858 5962-9089101MEA SI9110AK JANTX2N6661 4Kx8 sram ttl MGM TRANSFORMER JANTX2N5114 janTXV2N5545
    Text: Aerospace and Defense Product Offering Siliconix MIL–S–19500 Compliant Devices 2N5547JANTX MIL–S–19500/430 Siliconix Part No. Description 2N5547JANTXV MIL–S–19500/430 2N4856JAN MIL–S–19500/385 2N6660JANTX MIL–S–19500/547 2N4856JANTX MIL–S–19500/385


    Original     		PDF 2N5547JANTX 2N5547JANTXV 2N4856JAN 2N6660JANTX 2N4856JANTX 2N6660JANTXV 2N4856JANTXV 2N6661JAN 2N4857JAN 2N6661JANTX P-Channel Depletion-Mode MD80C31 JANTX2N4858 5962-9089101MEA SI9110AK JANTX2N6661 4Kx8 sram ttl MGM TRANSFORMER JANTX2N5114 janTXV2N5545

    2N4856

    Abstract: No abstract text available
    Text: T em ic 2N4856 JAN/JANTX/JANTXV Series siliconix N-Channel JFETs 2N4856JAN 2N4857JAN 2N4858JAN 2N4859JAN 2N4860JAN 2N4861JAN 2N4856JANTX 2N4857JANTX 2N4858JANTX 2N4859JANTX 2N4860JANTX 2N4861JANTX 2N4856JANTXV 2N4857JANTXV 2N4858JANTXV 2N4859JANTXV 2N4860JANTXV


    OCR Scan     		PDF 2N4856 2N4856JAN 2N4857JAN 2N4858JAN 2N4859JAN 2N4860JAN 2N4861JAN 2N4857 2N4858

    Untitled

    Abstract: No abstract text available
    Text: 2N4856JAN/JANTX/JANTXV Series Vishay Siliconix N-Channel JFETs 2N4856JAN 2N4856JANTX 2N4856JANTXV 2N4857JAN 2N4858JAN 2N4857JANTX 2N4857JANTXV 2N4858JANTX 2N4858JANTXV 2N4859JAN 2N4859JANTX 2N4859JANTXV 2N4860JAN 2N4860JANTX 2N4860JANTXV 2N4861JAN 2N4861JANTX


    OCR Scan     		PDF 2N4856JAN/JANTX/JANTXV 2N4856JAN 2N4857JAN 2N4858JAN 2N4859JAN 2N4860JAN 2N4861JAN 2N4856JANTX 2N4857JANTX 2N4858JANTX

    2N4303

    Abstract: sd215 siliconix 2n4416 jfet JFET u1898 cross 2N4381 2N4393 JFET 2N3330 2n4267 2N4302
    Text: si6halFET Product Specifications 7-io N & P-Channel Single JFETs Siliconix N N N P P P 8.0 6.0 11.5 6.5 3.2 5.0 5.0 9.5. 20 20 40 40 40 30 30 30 _ - _ _ _ _ _ _ _ 45 45 - _ _ - _ 0.9 2.0 0.2 0.44 1.0 2.0 5.0 1.0 2.0 0.5 0.1 3.0 I5.0 15.0 _ 25 75 150 _ 90 60


    OCR Scan     		PDF P1087 P1087-18 SD210 SD211 S0212 SD213 SD214 SD215 U1897 U1897-18 2N4303 sd215 siliconix 2n4416 jfet JFET u1898 cross 2N4381 2N4393 JFET 2N3330 2n4267 2N4302

    j201 jfet

    Abstract: 2N4303 J201 Replacement fet cross reference FET J202 2N4381 2N3966 2N3909 J-FET 2N4393
    Text: Iì ì ì F E T P r o d u c t p e c i f i c GENERAL GEOMETRY Section 4 a t i o n s ( C o n f d ) Product Specifications DEVICE S lUT s ì g PURPOSE —I —1 . , X X z z z z z z z z z z z z z z z z ù - o i z z z z z z 'z z


    OCR Scan     		PDF 2N3821 2N3822 2N4220 2N4221 2N4222 2N5457 2N4139 2N3822 2N4861A 2N4861A j201 jfet 2N4303 J201 Replacement fet cross reference FET J202 2N4381 2N3966 2N3909 J-FET 2N4393

    J201 Replacement

    Abstract: fet cross reference 2N3B19 j201 Cross Reference 2n4381 JFET 2N4302 CROSS REFERENCE 2n6661 2N4393 fet 2N4304
    Text: Iì ì ì F E T P r o d u c t p e c i f i c GENERAL GEOMETRY Section 4 a t i o n s ( C o n f d ) Product Specifications DEVICE S lUT s ì g PURPOSE —I —1 . , X X z z z z z z z z z z z z z z z z ù - o i z z z z z z 'z z


    OCR Scan     		PDF 2N3821 2N3822 2N4220 2N4221 2N4222 2N5457 2N3955 2N4339 2N5546 J201 Replacement fet cross reference 2N3B19 j201 Cross Reference 2n4381 JFET 2N4302 CROSS REFERENCE 2n6661 2N4393 fet 2N4304

    siliconix fet

    Abstract: Transistor E112 FET N-Channel JFET TRANSISTOR REPLACEMENT GUIDE j201 E112 jfet jfet bfw10 terminals JFET BFW10 SPECIFICATIONS 4856a mosfet Transistor E112 FET FETs in Balanced Mixers Ed Oxner equivalent components FET BFW10
    Text: s S ilic o n ix FET Design Catalog 1979 Siliconix incorporated Printed in U.S.A. Siliconix incorporated reserves the right to make changes in the circuitry or specifications in this book at any time w ithout notice. Siliconix incorporated assumes no responsibility


    OCR Scan     		PDF J-23548 K24123 i39-40i NZ3766 53-C-03 siliconix fet Transistor E112 FET N-Channel JFET TRANSISTOR REPLACEMENT GUIDE j201 E112 jfet jfet bfw10 terminals JFET BFW10 SPECIFICATIONS 4856a mosfet Transistor E112 FET FETs in Balanced Mixers Ed Oxner equivalent components FET BFW10

    Untitled

    Abstract: No abstract text available
    Text: Tem ic Semiconductors # SOT23 TO 18 2 lead T018 (3 lead) ^ TOS2 T072 TO92 (2 lead) ^ T092(31ead) JFETs - N-Channel JFET Analog Switches Break­ down Voltage Mm i \ i “ VS i f .5 » . ¡ i f * , • fe ’ (Q> Min \b x Min J 105 3 ^ .5 -10 500 -20 J106


    OCR Scan     		PDF 31ead) T0226AA PN4391 PN4392 PN4393 T0236 IT0206AA T0206AC 2N5432 2N5433

    jfet

    Abstract: 2N4303 Siliconix JFET Dual 2N4381 to92 jfet p channel 2N4302 n channel 2n4393 2N3994 dual P-Channel JFET 2n4267
    Text: Product Specifications Product Specifications Cont’d Low Leakage Diodes Part Number Package (TO- ) Diode Reverse Current (pA, Max.) Breakdown Voltage (Volts) Min. Max. DPAD1 DPAD2 DPAD5 DPAD10 DPAD20 DPAD50 D PAD100 78 , 72 72 72 72 72 72 Dual : Dual Dual


    OCR Scan     		PDF DPAD10 DPAD20 DPAD50 DPAD100 JPAD10 JPAD20 JPAD50 JPAD100 JPAD200 JPAD500 jfet 2N4303 Siliconix JFET Dual 2N4381 to92 jfet p channel 2N4302 n channel 2n4393 2N3994 dual P-Channel JFET 2n4267

    JFET

    Abstract: J-FET 2n4267 2N4303 2N4381 2N4393 2N3971 2N4119 2N4302 2N4341
    Text: Industry Part Number Type and Classification FET Cross Reference Conta Recommended Replacement Data Sheet Page _ Pafle Industry Part Number Type and Classification Recommended Replacement 2N3909 2N3909A 2N3921 2N3922 2N3954 P JFET P JFET D N JFET D N JFET


    OCR Scan     		PDF 2N3909 2N4340 2N4340 2N3909A 2N3909 2N4341 2N4341 2N3921 2N3921 2N4352 JFET J-FET 2n4267 2N4303 2N4381 2N4393 2N3971 2N4119 2N4302

    e304 fet

    Abstract: JFET TRANSISTOR REPLACEMENT GUIDE j201 bfq13 e420 dual jfet JFET TIS88 Siliconix FET Design Catalog E112 jfet jfet e300 BFW10 JFET 2N3686
    Text: January 1986 Small-Signal FET Data Book Slliconix incorporated reserves the right to make changes in the circuitry or specifications at any time without notice and assumes no responsibility for the use of any circuits described herein and makes no representations that


    OCR Scan     		PDF K28742 44449SILXHX e304 fet JFET TRANSISTOR REPLACEMENT GUIDE j201 bfq13 e420 dual jfet JFET TIS88 Siliconix FET Design Catalog E112 jfet jfet e300 BFW10 JFET 2N3686

    JFET

    Abstract: 2N4303 "cross reference" 2n4393 replacement 2N4381 2n4416 jfet J-FET 2N4302 2N4303 2N4304 fet cross reference
    Text: Industry Part Number Type and Classification FET Cross Reference Conta Recommended Replacement Data Sheet Page _ Pafle Industry Part Number Type and Classification Recommended Replacement 2N3909 2N3909A 2N3921 2N3922 2N3954 P JFET P JFET D N JFET D N JFET


    OCR Scan     		PDF 2N3909 2N4340 2N4340 2N3909A 2N3909 2N4341 2N4341 2N3921 2N3921 2N4352 JFET 2N4303 "cross reference" 2n4393 replacement 2N4381 2n4416 jfet J-FET 2N4302 2N4303 2N4304 fet cross reference

    fet cross reference

    Abstract: 2N4381 2N4302 fet 2N4304 JFET 2N5457 P-Channel JFET 2N3823 fet 2N4393 2N4303 2N4119
    Text: Industry Part Number Type and Classification FET Cross Reference Recommended Replacement Data Sheet Page _ Pafle Industry Part Number Conta Type and Classification Recommended Replacement 2N3909 2N3909A 2N3921 2N3922 2N3954 P JFET P JFET D N JFET D N JFET


    OCR Scan     		PDF 2N3909 2N4340 2N4340 2N3909A 2N3909 2N4341 2N4341 2N3921 2N3921 2N4352 fet cross reference 2N4381 2N4302 fet 2N4304 JFET 2N5457 P-Channel JFET 2N3823 fet 2N4393 2N4303 2N4119

    fet cross reference

    Abstract: 2N4302 2N4381 2N4393 JFET 2N5457 2N3B19 JFET 2N6568 2N4303 2n4416 jfet
    Text: Industry Part Number Type and Classification FET Cross Reference Conta Recommended Replacement Data Sheet Page _ Pafle Industry Part Number Type and Classification Recommended Replacement 2N3909 2N3909A 2N3921 2N3922 2N3954 P JFET P JFET D N JFET D N JFET


    OCR Scan     		PDF 2N3909 2N4340 2N4340 2N3909A 2N3909 2N4341 2N4341 2N3921 2N3921 2N4352 fet cross reference 2N4302 2N4381 2N4393 JFET 2N5457 2N3B19 JFET 2N6568 2N4303 2n4416 jfet