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4 mm Electromechanical

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Circuit Board Hardware - PCB S70 SMT Spring Contact 5mm high S7051-42R Harwin 1: $0.51 7,106In Stock 75,600On Order	Mfr. Part No. S7051-42R Mouser Part No 855-S7051-42R	Harwin	Circuit Board Hardware - PCB S70 SMT Spring Contact 5mm high Learn More about Harwin spring contacts	Datasheet	7,106In Stock 75,600On Order On Order Ship Dates Mfr. No: S7051-42R Stock: 7,106 Can Dispatch Immediately On Order: 18,200 Expected 10/11/2026 57,400 Expected 16/02/2027 Factory Lead Time: 15 Weeks	Cut Tape $0.51 $0.368 $0.294 $0.265 Reel $0.259 View $0.251 $0.228 $0.226 MouseReel Available	Min.: 1 Mult.: 1 : 1,400
Solid State Relays - SSRs Solid State Relay G3NA-210BL DC5-24 Omron Automation and Safety 1: $49.23 5In Stock	Mfr. Part No. G3NA-210BL DC5-24 Mouser Part No 653-G3NA-210BLDC5-24	Omron Automation and Safety	Solid State Relays - SSRs Solid State Relay	Datasheet	5In Stock	$49.23 $41.95 $41.25 $40.54 View $39.83 $38.99 Quote	Min.: 1 Mult.: 1
Solid State Relays - SSRs Solid State Relay G3NA-205B-UTU AC100-240 Omron Automation and Safety 1: $58.17 4In Stock	Mfr. Part No. G3NA-205B-UTU AC100-240 Mouser Part No 653-G3NA205BUTAC1240	Omron Automation and Safety	Solid State Relays - SSRs Solid State Relay	Datasheet	4In Stock	$58.17 $56.19 $55.29 $54.35 View $53.54 Quote	Min.: 1 Mult.: 1
Solid State Relays - SSRs Solid State Relay G3NA-210B-UTU AC100-240 Omron Automation and Safety 1: $66.56 1In Stock 11Expected 03/11/2026	Mfr. Part No. G3NA-210B-UTU AC100-240 Mouser Part No 653-G3NA210BUTAC1240	Omron Automation and Safety	Solid State Relays - SSRs Solid State Relay	Datasheet	1In Stock 11Expected 03/11/2026	$66.56 $62.89 $60.51 $58.42 View $56.41 Quote	Min.: 1 Mult.: 1
Solid State Relays - SSRs Solid State Relay G3NA-220B-UTU AC100-240 Omron Automation and Safety 1: $66.56 14In Stock	Mfr. Part No. G3NA-220B-UTU AC100-240 Mouser Part No 653-G3NA220BUTAC1240	Omron Automation and Safety	Solid State Relays - SSRs Solid State Relay	Datasheet	14In Stock	$66.56 $64.64 $59.13 $57.50 View $56.05 Quote	Min.: 1 Mult.: 1
Solid State Relays - SSRs Solid State Relay G3NA-225B-UTU AC100-240 Omron Automation and Safety 1: $66.56 21In Stock	Mfr. Part No. G3NA-225B-UTU AC100-240 Mouser Part No 653-G3NA225BUTAC1240	Omron Automation and Safety	Solid State Relays - SSRs Solid State Relay	Datasheet	21In Stock	$66.56 $62.89 $60.51 $58.42 View $56.41 Quote	Min.: 1 Mult.: 1
Solid State Relays - SSRs SOLID STATE RELAY TUV Markings G3NA-240B-UTU DC5-24 Omron Automation and Safety 1: $103.99 10In Stock	Mfr. Part No. G3NA-240B-UTU DC5-24 Mouser Part No 653-G3NA240BUTUDC524	Omron Automation and Safety	Solid State Relays - SSRs SOLID STATE RELAY TUV Markings	Datasheet	10In Stock	$103.99 $101.16 $97.06 $93.72 View $92.70 Quote	Min.: 1 Mult.: 1
Solid State Relays - SSRs Solid State Relay G3NA-420B-UTU DC5-24 Omron Automation and Safety 1: $106.18 5In Stock	Mfr. Part No. G3NA-420B-UTU DC5-24 Mouser Part No 653-G3NA420BUTDC524	Omron Automation and Safety	Solid State Relays - SSRs Solid State Relay	Datasheet	5In Stock	$106.18 $99.71 $96.67 $94.28 $91.38	Min.: 1 Mult.: 1
Solid State Relays - SSRs Solid State Relay,RoHS G3NA-475B-UTU-2 DC5-24 Omron Automation and Safety 1: $162.45 2In Stock	Mfr. Part No. G3NA-475B-UTU-2 DC5-24 Mouser Part No 653-G3NA475BUTU2DC24	Omron Automation and Safety	Solid State Relays - SSRs Solid State Relay,RoHS	Datasheet	2In Stock	$162.45 $141.29 $137.71 $134.99 View Quote	Min.: 1 Mult.: 1
Solid State Relays - SSRs Solid State Relay G3NA-D210B-UTU AC100-240 Omron Automation and Safety 1: $100.55 6In Stock	Mfr. Part No. G3NA-D210B-UTU AC100-240 Mouser Part No 653-G3NAD210BUTAC124	Omron Automation and Safety	Solid State Relays - SSRs Solid State Relay	Datasheet	6In Stock	$100.55 $94.68 $90.41 $87.00 $84.29	Min.: 1 Mult.: 1
Microphones ELECTRET CONDENSER MICROPHONE -35DB ROM-2235L-HD-R PUI Audio 1: $4.17 523In Stock	Mfr. Part No. ROM-2235L-HD-R Mouser Part No 665-ROM-2235L-HD-R	PUI Audio	Microphones ELECTRET CONDENSER MICROPHONE -35DB Learn More about PUI Audio pui hd condenser microphones	Datasheet	523In Stock	$4.17 $3.03 $2.69 $2.39 View $2.11 $1.97 $1.89	Min.: 1 Mult.: 1
Speakers & Transducers ELECTROMAGNETIC 2-4 AC VPP 70DB 4000HZ 4X4X2 AST0440MFD-03TRQ Mallory Sonalert 1: $4.73 2,907In Stock	Mfr. Part No. AST0440MFD-03TRQ Mouser Part No 539-AST0440MFD-03TRQ	Mallory Sonalert	Speakers & Transducers ELECTROMAGNETIC 2-4 AC VPP 70DB 4000HZ 4X4X2 Learn More about Mallory Sonalert transducers indicators	Datasheet	2,907In Stock	Cut Tape $4.73 $3.62 $3.27 $3.03 View Reel $2.45 $2.81 $2.62 $2.45 $2.45	Min.: 1 Mult.: 1 : 3,000
Detector Switches SPST, ON-(OFF) Detect switch, 100mA @ 12V DC Gull Wing SMD Terminals, T&R 1,000 pc packaging CL-DA-1BB4-A2T Nidec Components 1: $1.20 581In Stock	Mfr. Part No. CL-DA-1BB4-A2T Mouser Part No 229-CL-DA-1BB4-A2T	Nidec Components	Detector Switches SPST, ON-(OFF) Detect switch, 100mA @ 12V DC Gull Wing SMD Terminals, T&R 1,000 pc packaging Learn More about Nidec Components nidec cl da detect switches	Datasheet	581In Stock	Cut Tape $1.20 $0.995 $0.924 $0.873 Reel $0.682 View $0.825 $0.765 $0.723 $0.644	Min.: 1 Mult.: 1 : 1,000
Detector Switches SPST, OFF-(ON) Detect switch, 100mA @ 12V DC Gull Wing SMD Terminals, T&R 1,000 pc packaging CL-DA-1CB4-A2T Nidec Components 1: $1.26 949In Stock 1,000Expected 27/01/2027	Mfr. Part No. CL-DA-1CB4-A2T Mouser Part No 229-CL-DA-1CB4-A2T	Nidec Components	Detector Switches SPST, OFF-(ON) Detect switch, 100mA @ 12V DC Gull Wing SMD Terminals, T&R 1,000 pc packaging Learn More about Nidec Components nidec cl da detect switches	Datasheet	949In Stock 1,000Expected 27/01/2027	Cut Tape $1.26 $1.06 $0.979 $0.925 Reel $0.722 View $0.874 $0.811 $0.724 $0.683	Min.: 1 Mult.: 1 : 1,000
Switch Bezels / Switch Caps ORANG 4X4 B3F KEYCAP B32-1020 Aratas 1: $0.41 3,047In Stock	Mfr. Part No. B32-1020 Mouser Part No 653-B32-1020	Aratas	Switch Bezels / Switch Caps ORANG 4X4 B3F KEYCAP	Datasheet	3,047In Stock	$0.41 $0.368 $0.354 $0.344 View $0.334 $0.321 $0.305 $0.29 $0.281	Min.: 1 Mult.: 1
Switch Bezels / Switch Caps Green 4x4 mm Key Top B32-1050 Aratas 1: $0.41 1,872In Stock 2,000Expected 22/01/2027 New At Mouser	Mfr. Part No. B32-1050 Mouser Part No 653-B32-1050 New At Mouser	Aratas	Switch Bezels / Switch Caps Green 4x4 mm Key Top	Datasheet	1,872In Stock 2,000Expected 22/01/2027	$0.41 $0.368 $0.354 $0.344 View $0.334 $0.321 $0.308 $0.29 $0.281	Min.: 1 Mult.: 1
Switch Bezels / Switch Caps LT GRN 4mm KEY CAP B32-1070 Aratas 1: $0.41 319In Stock	Mfr. Part No. B32-1070 Mouser Part No 653-B32-1070	Aratas	Switch Bezels / Switch Caps LT GRN 4mm KEY CAP	Datasheet	319In Stock	$0.41 $0.368 $0.354 $0.344 View $0.334 $0.321 $0.305 $0.236 $0.234	Min.: 1 Mult.: 1
Microphones ELECTRET CONDENSER MICROPHONE -27DB DOM-3027L-HD-R PUI Audio 1: $3.65 140In Stock	Mfr. Part No. DOM-3027L-HD-R Mouser Part No 665-DOM-3027L-HD-R	PUI Audio	Microphones ELECTRET CONDENSER MICROPHONE -27DB Learn More about PUI Audio pui hd condenser microphones	Datasheet	140In Stock	$3.65 $2.86 $2.63 $2.49 $2.09	Min.: 1 Mult.: 1
Microphones OMNI-DIRECTIONAL MICROPHONE 4MM DIA TOM-1545L-LW100-R PUI Audio 1: $3.62 9In Stock	Mfr. Part No. TOM-1545L-LW100-R Mouser Part No 665-TOM1545LLW100R	PUI Audio	Microphones OMNI-DIRECTIONAL MICROPHONE 4MM DIA Learn More about PUI Audio microphone lead	Datasheet	9In Stock	$3.62 $2.76 $2.49 $2.29 View $2.13 $1.90 $1.80	Min.: 1 Mult.: 1
Microphones MICROPHONE -46DB 2VDC .5MA 2.2KOHM DUM-4546L-C3310-R PUI Audio 1: $2.76 98In Stock	Mfr. Part No. DUM-4546L-C3310-R Mouser Part No 665-DUM-4546L-C3310R	PUI Audio	Microphones MICROPHONE -46DB 2VDC .5MA 2.2KOHM	Datasheet	98In Stock	$2.76 $2.14 $1.93 $1.80 View $1.62 $1.48 $1.42	Min.: 1 Mult.: 1
Buzzers & Audio Indicators - Board Mount Buzzer 4mm sq 4kHz 3V SMT CMT-4023S-SMT-TR Same Sky 1: $3.91 22,000On Order	Mfr. Part No. CMT-4023S-SMT-TR Mouser Part No 490-CMT-4023S-SMT-TR	Same Sky	Buzzers & Audio Indicators - Board Mount Buzzer 4mm sq 4kHz 3V SMT Learn More about Same Sky cui magnetic piezo micro buzzers	Datasheet	22,000On Order On Order Ship Dates Mfr. No: CMT-4023S-SMT-TR Stock: 0 On Order: 1,000 Expected 30/10/2026 6,000 Expected 04/12/2026 6,000 Expected 05/02/2027 9,000 Expected 22/02/2027 Factory Lead Time: 18 Weeks	Cut Tape $3.91 $2.97 $2.66 $2.41 View Reel $1.61 $2.23 $2.06 $1.95 $1.71 $1.61 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Solid State Relays - SSRs Solid State Relay RoHS G3NA-450B-UTU-2DC5-24 Omron Automation and Safety 1: $152.68 Non-Stocked Lead-Time 3 Weeks	Mfr. Part No. G3NA-450B-UTU-2DC5-24 Mouser Part No 653-3NA450BUTU2DC524	Omron Automation and Safety	Solid State Relays - SSRs Solid State Relay RoHS	Datasheet	Non-Stocked Lead-Time 3 Weeks	$152.68 $135.96 $129.55 $125.37 View Quote	Min.: 1 Mult.: 1
Tactile Switches SPST-NO G LEAD 300g KSC141G C&K 10,000: $0.235 Non-Stocked	Mfr. Part No. KSC141G Mouser Part No 611-KSC141G	C&K	Tactile Switches SPST-NO G LEAD 300g Learn More about C&K ck ksc tact switches	Datasheet	Non-Stocked	$0.235	Min.: 10,000 Mult.: 1
Mounting Fixings OCS PANEL 1614 PC 1562144 Phoenix Contact 1: $114.18 Non-Stocked Lead-Time 15 Weeks New Product	Mfr. Part No. 1562144 Mouser Part No 651-1562144 New Product	Phoenix Contact	Mounting Fixings OCS PANEL 1614 PC	Datasheet	Non-Stocked Lead-Time 15 Weeks	$114.18	Min.: 1 Mult.: 1
Mounting Fixings OCS PANEL 1816 PC 1562145 Phoenix Contact 1: $135.96 Non-Stocked Lead-Time 15 Weeks New Product	Mfr. Part No. 1562145 Mouser Part No 651-1562145 New Product	Phoenix Contact	Mounting Fixings OCS PANEL 1816 PC	Datasheet	Non-Stocked Lead-Time 15 Weeks	$135.96	Min.: 1 Mult.: 1