关键词
型号
0402G470G201ST
0402G470G201SNT
0402G470C201ST
0402G470A201SW-A
0402G470A201ST-A
0402G3R0P251ST-B
0402G3R0P251SNW
0402G3R0F251ST-A
0402G390P201SNT-C
0402G390G201SW-B
0402G390G201SW-A
0402G390G201SNW-B
0402G390G201SNT-B
0402G390D201ST-B
0402G390C201SNT-B
0402G390C201SNT-A
0402G390B201SNW-A
0402G2R4G500SNW-B
0402G2R4G251SW-B
0402G2R2P251SNT-C
0402G2R0P500GW-B
0402G2R0A500SNW-B
0402G2R0A251SW
0402G2R0A251SNW
0402G271K101SNW-A
0402G271K101SNT
0402G271F101SW-C
0402G271B101ST-B
0402G270P201SW-C
0402G270K201ST
0402G270K201SNT-A
0402G270C201SW-A
0402G270C201ST-C
0402G220J201SW
0402G220J201SNW
0402G220J201SNT-B
0402G201J101SNW-C
0402G201J101SNW-A
0402G201G500SW-B
0402G201G101SW-A
0402G1R8C251SNW-B
0402G1R5P500SNW-B
0402G1R2G251ST
0402G1R1A251SW-A
0402G1R0D500SNW-B
0402G180P201ST-C
0402G180C201ST-C
0402G150F251ST
0402G131J101SW
0402G131D101SW
0402G131A101SNT-A
0402G120P251SW
0402G120G500SW-C
0402G120G500GW-B
0402G111P101SNT-C
0402G111P101SNT
0402G111K101ST-B
0402G111J500SNW-B
0402G102C500SW-A
0402G100C251SNW
0402G100C251SNT
0402G0R9B251SW-A
0402G0R9B251SNT-A
0402G0R8K251SW-B
0402G0R8K251ST
0402G0R8G251SNT
0402G0R8B251SW-A
0402G0R8B251SNT-C
0402G0R7B251SW-B
0402G0R6K251SNT-B
0402G0R5B251SW-B
0402G0R5B251SW
0402G0R3B251SNW-B
0402G0R3B251SNT-A
0402G0R1G251ST-A
0402C6R2G500ST
0402C3R9A500GW
0402C330G250SNT
0402C160B500GW
0402B105J160ST-A
0402X7R393G10V
048TUE-T4131D20
048TUD-64190A20
048KUE-T4130D20
047202R5Z20008M
04700FL211030-01
04700FL211010-01
0437H03221032
042H1FL121021-00
0411HFL211010-0
0411HFL121011-0
04-4633N70000000
04-4633N20000220
04-4633N00000100
04-4633-70000000
04-4624R7000018Z
04-4453M20000150
04-4434M20000130
04-4434M0000012Z
04-4344R0000010Z
04-4344M20000090
04-4344-20000080
04-4264N0000004Z
04-4264-70000050
04-4213N7000002Z
04-4213N30000050
04-4213M70000060
04-4213M20000150
04-4213-00000030
04-4133R7000004Z
04-4133M2000013Z
04-4124R0000022Z
04-4124M70000220
04-4124M3000023Z
04-4104N3000000Z
04-4103R3000000Z
04-4103R0000013Z
04-4103M3000022Z
04-4103-0000010Z
04-3633-0000018Z
04-3624R0000015Z
04-3624-3000000Z
04-3624-0000000Z
04-3453R3000012Z
04-3453M00000230
04-3453M00000020
04-3453-00000230
04-3434R7000002Z
04-3434R2000023Z
04-3434M0000011Z
04-3434M00000020
04-3373N7000008Z
04-3373M3000023Z
04-3373M30000140
04-3373-30000120
04-3373-2000000Z
04-3344R2000014Z
04-3344M3000011Z
04-3344M2000012Z
04-3264N70000080
04-3264M00000140
04-3264-0000014Z
04-3264-00000140
04-3264-00000100
04-3213R2000018Z
04-3213M3000020Z
04-3213M2000018Z
04-3213M2000008Z
04-3213-70000200
04-3133R7000019Z
04-3133-0000005Z
04-3124-00000140
04-3104R3000003Z
04-3103-70000110
04-3103-2000023Z
04-2633M7000019Z
04-2624R70000060
04-2624R00000060
04-2624N7000018Z
04-2624M2000016Z
04-2453R00000020
04-2453N7000015Z
04-2453N70000020
04-2453N2000002Z
04-2453M70000040
04-2453M2000002Z
04-2434M7000013Z
04-2434-70000220
04-2434-70000000
04-2373N0000021Z
04-2373M70000210
04-2373-30000210
04-2344R3000022Z
04-2344M70000190
04-2344-7000008Z
04-2344-2000020Z
04-2264R0000017Z
04-2264N7000006Z
04-2264M30000170
04-2264-0000006Z
04-2213M7000012Z
04-2213M7000010Z
04-2213M3000014Z
04-2213M2000023Z
04-2213M0000009Z
04-2213M0000000Z
04-2133M30000110
04-2133-20000210
04-2133-20000190
04-2133-20000180
04-2133-20000170
04-2133-20000140
04-2124R0000021Z
04-2124-7000023Z
04-2124-7000022Z
04-2124-70000220
04-2124-7000021Z
04-2124-70000190
04-2124-70000150
04-2124-70000140
04-2124-2000023Z
04-2124-20000220
04-2124-20000190
04-2104M20000130
04-2103N7000009Z
04-2103N3000009Z
04-2103M00000090
04-2103-3000007Z
04-2103-2000015Z
04-1633R7000006Z
04-1633M00000000
04-1624-00000170
04-1453R30000020
04-1453N2000013Z
04-1453-00000030
04-1434N3000011Z
04-1434N2000011Z
04-1434M70000220
04-1434M3000009Z
04-1373R00000080
04-1373N2000005Z
04-1373-70000060
04-1344N3000003Z
04-1264R0000019Z
04-1213-70000230
04-1133N0000011Z
04-1133M30000090
04-1133-30000190
04-1133-00000190
04-1124M70000070
04-1104R30000170
04-1104M0000006Z
04-1103N70000050
04-1103N0000003Z
04-1103-7000023Z
0402UJ6R0J160ST
0402UJ6R0J160SB
0402UJ6R0J160S
0402UJ6R0J160NT
0402UJ6R0J160NB
0402UJ6R0J160N
0402UJ6R0J160CT
0402UJ6R0J160CB
0402UJ6R0J160C
0402TH0R5C100ST
0402TH0R5C100SB
0402TH0R5C100S
0402TH0R5C100NT
0402TH0R5C100NB
0402TH0R5C100N
0402TH0R5C100CT
0402TH0R5C100CB
0402TH0R5C100C
0402SL101J250CT
0402SL101D250NB
0402SL101C250ST
0402SL101C250SB
0402SH470D250ST
0402SH470D250SB
0402SH470D250S
0402SH470D250NT
0402SH470D250NB
0402SH470D250N
0402SH470D250CT
0402SH470D250CB
0402SH470D250C
0402SH3R0G250ST
0402SH3R0G250SB
0402SH3R0G250S
0402SH3R0G250NT
0402SH3R0G250NB
0402SH3R0G250N
0402SH3R0G250CT
0402SH3R0G250CB
0402SH3R0G250C
0402PH4R0D160C
0402PH4R0D100ST
0402PH4R0D100SB
0402PH4R0D100S
0402PH4R0D100NT
0402PH4R0D100NB
0402PH4R0D100N
0402PH4R0D100CT
0402PH4R0D100CB
0402PH4R0D100C
0402PH4R0B500NT
0402PH4R0B250ST
0402PH4R0B250SB
0402PH4R0B250S
0402PH4R0B250NT
0402PH4R0B250NB
0402PH4R0B250N
0402PH4R0B250CT
0402PH4R0B250CB
0402PH4R0B250C
0402PH470D500ST
0402PH470D500SB
0402PH470D500S
0402PH470D500NT
0402PH470D500NB
0402PH470D500N
0402PH470D500CT
0402PH470D500CB
0402PH470D500C
0402PH470C100CT
0402PH2R0J6R3CT
0402PH2R0B160S
0402PH2R0B160CB
0402PH220G250ST
0402PH220G250SB
0402PH220G250S
0402PH220G250NT
0402PH220G250NB
0402PH220G250N
0402PH220G250CT
0402PH220G250CB
0402PH220G250C
0402PH1R0D500C
0402PH100G100ST
0402PH100G100SB
0402PH100G100S
0402PH100G100NT
0402PH100G100NB
0402PH100G100N
0402PH100G100CT
0402PH100G100CB
0402PH100G100C
0402PH0R5G6R3ST
0402PH0R5G6R3SB
0402PH0R5G6R3S
0402PH0R5G6R3NT
0402PH0R5G6R3NB
0402PH0R5G6R3N
0402PH0R5G6R3CT
0402PH0R5G6R3CB
0402PH0R5G6R3C
0402CH4R0C250SB
0402CH4R0C250NB
0402CH4R0C250N
0402CH4R0C250CB
0402CH4R0C250C
0402CH3R0D6R3ST
0402CH3R0D6R3SB
0402CH3R0D6R3S
0402CH3R0D6R3NT
0402CH3R0D6R3NB
0402CH3R0D6R3N
0402CH3R0D6R3CT
0402CH3R0D6R3CB
0402CH330G160ST
0402CH330G160S
0402CH330G160NT
0402CH330G160NB
0402CH330G160N
0402CH330G160CT
0402CH330G160CB
0402CH330G160C
0402CH101G250CB
0402CH101D250NB
0402CH101C250SB
0402CH101C250N
0402CH101C250CB
0402CH101B250SB
0402CH101B250S
0402CH101B250N
0402CH101B250CB
0402CGR50J500ST
0402CGR50J500NT
0402CGR50J500CT
0402CG8R0J250NT
0402CG8R0J250CT
0402CG4R0B500NT
0402CG101G250NT
0402CG101G250CT
0402B681J160CT
0402B471M250CT
0402B471J250NT
0402B471J250CT
0402B393M100ST
0402B393M100SB
0402B393M100S
0402B393M100NT
0402B393M100NB
0402B393M100N
0402B393M100CT
0402B393M100CB
0402B393M100C
0402B393K6R3ST
0402B393K6R3SB
0402B393K6R3S
0402B393K6R3NT
0402B393K6R3N
0402B333M100NT
0402B333M100NB
0402B333M100N
0402B333M100CT
0402B333M100CB
0402B333M100C
0402B333K6R3ST
0402B333K6R3SB
0402B333K6R3S
0402B333K6R3NT
0402B333K6R3NB
0402B333K6R3N
0402B333K6R3CT
0402B333K6R3CB
0402B333K6R3C
0402B333K100ST
0402B333K100SB
0402B333K100S
0402B333K100NT
0402B333K100NB
0402B333K100N
0402B333K100CB
0402B333K100C
0402B332M160CT
0402B223J250ST
0402B223J250SB
0402B223J250S
0402B223J250NT
0402B223J250NB
0402B223J250N
0402B223J250CT
0402B223J250CB
0402B223J250C
0402B222M500ST
0402B222M500SB
0402B222M500S
0402B222M500NT
0402B222M500NB
0402B222M500N
0402B222M500CB
0402B222M500C
0402B222M250ST
0402B222M250SB
0402B222M250S
0402B222M250NT
0402B222M250NB
0402B222M250N
0402B222M250CT
0402B222M250CB
0402B222M250C
0402B222M160ST
0402B222M160SB
0402B222M160S
0402B222M160NT
0402B222M160NB
0402B222M160N
0402B222M160CT
0402B222M160CB
0402B222M160C
0402B222M100ST
0402B222M100SB
0402B222M100S
0402B222M100NT
0402B222M100N
0402B222M100CT
0402B222K250ST
0402B222K250SB
0402B222K250S
0402B222K250NT
0402B222K250NB
0402B222K250N
0402B222K250CT
0402B222K250CB
0402B222K250C
0402B222K160ST
0402B222K160SB
0402B222K160S
0402B222K160NT
0402B222K160NB
0402B222K160N
0402B222K160CT
0402B222K160CB
0402B222K160C
0402B222J6R3SB
0402B222J6R3S
0402B222J6R3NB
0402B222J6R3N
0402B222J6R3CT
0402B222J6R3CB
0402B222J250NT
0402B222J250NB
0402B222J250N
0402B222J250CT
0402B222J250CB
0402B222J250C
0402B222J160ST
0402B222J160SB
0402B222J160S
0402B222J160NT
0402B222J160NB
0402B222J160N
0402B222J160CT
0402B222J160CB
0402B222J160C
0402B222J100ST
0402B222J100S
0402B222J100NB
0402B222J100CT
0402B222J100C
0402B182K250NT
0402B104K250N
0402B103J250ST
0402B103J250NB
0402B103J250C
0402B681J160NT
0402B681J160N
0402B471M250NT
0402B471M250N
0402B471K160NT
0402B471K160N
0402B471J250N
0402B392K160NT
0402B391K160PT
0402B332M160NT
0402B332M160N
0402B331J250PT
0402B271K250PT
0402B271K160PT
0402B222J100NT
0402B222J100N
0402B221M500PT
0402B221J500NT
0402B221J500N
0402B221J160PT
0402B181K500NT
0402B152M250NT
0402B152M250N
0402B102J250PT
041-43311-100
0402WGF3320TC
0402WGF1500TCE
0402N470K500LT
0402N3R9C250LT
0402N3R9C250LG
0402N3R3C250LT
0402N3R3C250CT
0402N100C500CT
0402N0R4C250LT
0402N0R4C250LG
0402N0R4B250LT
0402N0R4B250LG
0402N0R2B500LT
0402N0R2B500LG
0402B911K500CT
0402B622K160CT
0402B621K500CT
0402B431K500CT
0402B392M500CT
0402B392K160CT
0402B223K6R3CT
0402B222K250CG
0402B221K250CG
0402B221K100CG
0402B221J160CT
0402B182J100CG
0402HM-620EHTS
046299028020846+
046272022000800
046272012000800
046240031023846+
046238007410846+
0402ZG822ZAT4A
0402ZG822ZAT2A
0402ZC392MAT4A
0402ZC392MAT2A
0402ZC392KAT4A
0402ZC392JAT7A
0402ZC392JAT4A
0402ZC392JAT2A
0402ZC392JA79A
0402ZC222JAT9A
0402ZC222JAT7A
0402ZC222JA79A
0402ZC222JA77A
0402ZC183MAT9A
0402ZC183MAT7A
0402ZC183MAT4A
0402ZC183MAT2A
0402ZC183MA79A
0402ZC183MA77A
0402ZC183KAT4A
0402ZC183JAT4A
0402ZC182JAT4A
0402ZC182JAT2A
0402ZC181MAT9A
0402ZC181MAT7A
0402ZC181MAT4A
0402ZC181MAT2A
0402ZC181MA79A
0402ZC181MA77A
0402ZC123KAT4A
0402YC682JAZ9A
0402YC682JAZ7A
0402YC682JAT9A
0402YC682JAT7A
0402YC472JA77A
0402YC392MAT4A
0402YC392MAT2A
0402YC392KAT9A
0402YC392KAT7A
0402YC392KAT4A
0402YC392KAT3A
0402YC392KAT1A
0402YC392JAT4A
0402YC391J4Z2A
0402YC271KAT4A
0402YC271K4U4A
0402YC271K4U2A
0402YC271K4T4A
0402YC271K4T2A
0402YC223JAZ9A
0402YC223JAZ7A
0402YC223JAT9A
0402YC223JAT7A
0402YC222KAT1A
0402YC222KA79A
0402YC222KA77A
0402YC222K4Z2A
0402YC222K4T4A
0402YC222JAT9A
0402YC222JAT7A
0402YC222JA79A
0402YC222JA77A
0402YC222J4Z4A
0402YC222J4Z2A
0402YC221KAT9A
0402YC221KAT7A
0402YC221KA79A
0402YC221KA77A
0402YC221K4Z4A
0402YC221K4Z2A
0402YC221JAT9A
0402YC221JAT7A
0402YC221JA79A
0402YC221JA77A
0402YC221J4Z4A
0402YC221J4Z2A
0402YC182MAT4A
0402YC122MAT4A
0402YC122JAT4A
0402YA331GAT9A
0402YA331GAT7A
0402YA331GA79A
0402YA331GA77A
04025UR60DAT4A
04025UR60DAT2A
04025UR20BAT4A
04025UR20BAT2A
04025U3R3D4T4A
04025U3R3D4T2A
04025U300M4T9A
04025U300M4T4A
04025U300M4T2A
04025U2R4B4T4A
04025U27RMAT2A
04025U240G4T4A
04025U240G4T2A
04025U220K4T9A
04025U220K4T4A
04025U220K4T2A
04025U1R6C4T4A
04025U1R6C4T2A
04025U1R5C4T9A
04025U1R5C4T4A
04025U1R5C4T2A
04025U12RFAT2A
04025U120F4T9A
04025U120F4T4A
04025U120F4T2A
04025U0R9D4T9A
04025U0R9D4T4A
04025U0R9D4T2A
04025C821MAT9A
04025C821MAT7A
04025C821MAT3A
04025C821MAT1A
04025C681MAT7A
04025C681MAT1A
04025C681MA79A
04025C561MAT4A
04025C472MAT9A
04025C392KA79A
04025C392KA77A
04025C392JA79A
04025C392JA77A
04025C391KA79A
04025C391KA77A
04025C391K4T4A
04025C391K4T2A
04025C331K4Z4A
04025C331K4Z2A
04025C272MAT7A
04025C272MAT4A
04025C222MAZ4A
04025C222MAZ2A
04025C222MAT1A
04025C222M4Z4A
04025C222M4T4A
04025C222M4T2A
04025C222J4Z4A
04025C222J4T4A
04025C222J4T2A
04025C221MAZ9A
04025C221J4Z4A
04025C221J4Z2A
04025C182MAT1A
04025C182MA77A
04025C181MAT4A
04025C181KA79A
04025C122MAT4A
04025C122MA77A
04025AR50JAT9A
04025AR50JAT7A
04025AR50JAT4A
04025AR50JAT2A
04025AR50JA79A
04025AR50JA77A
04025AR50JA74A
04025AR50JA72A
04025A471JA79A
04025A471JA77A
04025A120K4Z4A
04025A100M4Z2A
04025A0R5JAT3A
04025A0R5JAT1A
04023U270FAT4A
04023U270FAT2A
04023G682ZAT4A
04023G682ZAT2A
04023G472ZAT4A
04023G472ZAT2A
04023C822JAT9A
04023C822JAT4A
04023C682MA77A
04023C682JAZ9A
04023C682JAZ7A
04023C682JAT7A
04023C471MAT3A
04023C392MAT4A
04023C392KAT9A
04023C392KAT7A
04023C392KAT3A
04023C392KAT1A
04023C392KA77A
04023C392JAT4A
04023C392JA79A
04023C331KAT3A
04023C331KA77A
04023C271KAT4A
04023C271K4U4A
04023C271K4U2A
04023C271K4T4A
04023C271K4T2A
04023C222MAT9A
04023C222MAT7A
04023C222MA79A
04023C222MA77A
04023C222KAT7A
04023C222KA79A
04023C222K4Z4A
04023C222K4Z2A
04023C222JA79A
04023C222JA77A
04023C222J4Z4A
04023C222J4Z2A
04023C221KA79A
04023C221KA77A
04023C221K4T2A
04023C221JAT9A
04023C221JAT7A
04023C221JA79A
04023C221JA77A
04023C221J4U2A
04023C221J4T2A
04023C182JAT9A
04023C182JAT7A
04023C182JA79A
04023C182J4Z4A
04023C182J4Z2A
04023C181JAT4A
04023C181JA77A
04023A8R2JAT3A
04023A820KAT9A
04023A820KAT7A
04023A820KA79A
04023A820KA77A
04023A3R9BAT9A
04023A3R9BAT7A
04023A3R9BA79A
04023A3R9BA77A
04023A270GAT9A
04023A270GAT7A
04023A270GA79A
04023A270GA77A
04023A151JAT1A
04023A150M4Z4A
04023A150M4Z2A
04023A150KAT9A
04023A150KAT7A
04023A150KA79A
04023A150KA77A
04023A150FAT9A
04023A150FAT7A
04023A150FA79A
04023A150FA77A
04023A121KAT3A
04023A121KAT1A
04023A120GAT9A
04023A120GA79A
04023A120GA77A
04023A101J4Z4A
04023A101J4Z2A
0402CG8R2D9BP00
0402CG8R2D9B300
0402CG8R2B9BP00
0402CG820G9BF00
0402CG820G9BB00
0402CG270D9BP00
0402CG270D9BF00
0402CG270D9BB00
0402CG270D9B300
0402CG270D9B200
0402CG151J9BF00
0402CG151J9BB00
04022R221K7B20D
04022R183J7B20D
04022R181J9B20D
04022R104K6BP0D
04022R103J7BP0D
04022R103J7B30D
0462-221-16141
0402X7R471JT7AT
0402X7R392JT7AT
0402X7R392JT7AB
0402X7R271KT7AT
0402X7R271KT1AT
0402X7R271KT1AB
0402X7R221JE1AT
0402NPO150FE1ST
0402HP2R4BT50T
0402HP1R8CT50T
0402HP1R5CT50T
0402HP1R2CT50T
0402HP180GT50T
0402HP120FT50T
0402HP0R9DT50T
0402HP0R5CT50T
0402Y250P400CQT
0402Y250P400CQB
0402Y2000130FQB
0402Y100P100CQT
0402Y100P100CQB
0402Y1002P40BQB
0402Y050P900DQT
0402Y050P900DQB
0402Y050P500CQT
0402Y050P500CQB
0402Y0501P80CQT
0402Y0501P80CQB
0402Y0501P50CQT
0402Y0501P50CQB
0402Y0500330GQT
0402Y0500330GQB
0402Y0500220KQT
0402Y0500220KQB
0402Y0500120FQT
0402Y0500120FQB
0402J250P400CQT
0402J250P400CQB
0402J200P300BQT
0402J100P100CQT
0402J100P100CQB
0402J050P900DQT
0402J050P900DQB
0402J050P500CQT
0402J050P500CQB
0402J0501P80CQT
0402J0501P80CQB
0402J0501P50CQT
0402J0501P50CQB
0402J0500330GQT
0402J0500330GQB
0402J0500220KQT
0402J0500220KQB
0402J0500120FQT
0402J0500120FQB
0402H250P400CQT
0402H250P400CQB
0402H2502P20BQB
0402H2002P70BQT
0402H2002P70BQB
0402H2000130JQT
0402H2000130JQB
0402H2000130FQT
0402H2000130FQB
0402H100P100CQT
0402H100P100CQB
0402H1002P40BQT
0402H1002P40BQB
0402H1002P20BQB
0402H1000150GQB
0402H050P900DQT
0402H050P900DQB
0402H050P500CQT
0402H050P500CQB
0402H0502P40BQT
0402H0501P80CQT
0402H0501P80CQB
0402H0501P50CQT
0402H0501P50CQB
0402H0500330GQT
0402H0500330GQB
0402H0500220KQT
0402H0500220KQB
0402H0500120FQT
0402H0500120FQB
0402A250P400CQT
0402A250P400CQB
0402A2000130JQT
0402A2000130JQB
0402A2000130FQT
0402A2000130FQB
0402A100P100CQT
0402A100P100CQB
0402A1002P40BQT
0402A1002P40BQB
0402A050P900DQT
0402A050P900DQB
0402A050P500CQT
0402A050P500CQB
0402A0501P80CQT
0402A0501P80CQB
0402A0501P50CQT
0402A0501P50CQB
0402A0500330GQT
0402A0500330GQB
0402A0500220KQT
0402A0500220KQB
0402A0500180GQT
0402A0500120FQT
0402A0500120FQB
04-2.125-183DTL
0402X751M500NT
0402X751M500N
0402X751K500NT
0402X751K500N
0402X751J500NT
0402X751J500N
0402MR91C201ET
0402MR91C201BT
0402MR62B250ET
0402MR62B250BT
0402MR36G500ET
0402MR36G500BT
0402M8R2J250ET
0402M8R2J250BT
0402M8R2D500ET
0402M8R2D500BT
0402M8R2B500ET
0402M8R2B500BT
0402M6R8C101ET
0402M6R8C101BT
0402M3R9B101ET
0402M3R9B101BT
0402M3R6B160ET
0402M300J250ET
0402M300J250BT
0402M300F250ET
0402M300F250BT
0402M2R4D500ET
0402M2R4D500BT
0402M2R4B201ET
0402M2R4B201BT
0402M2R2B500ET
0402M2R2B500BT
0402M2R0C250ET
0402M2R0C250BT
关键词推荐
电子工程世界版权所有 京B2-20211791 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号 Copyright © 2005-2025 EEWORLD.com.cn, Inc. All rights reserved