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Circuit Protection

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (HKD) Filter the results in the table by unit price based on your quantity.	Qty.
Triacs 25 Amp 600 Volt BTB24-600CWRG STMicroelectronics 1: HK$22.93 347In Stock 1,000Expected 26/10/2026	Mfr. Part No. BTB24-600CWRG Mouser Part No 511-BTB24-600CW	STMicroelectronics	Triacs 25 Amp 600 Volt Learn More about STMicroelectronics stm standard products	Datasheet	347In Stock 1,000Expected 26/10/2026	HK$22.93 HK$14.71 HK$11.26 HK$8.55 View HK$6.76 HK$6.74	Min.: 1 Mult.: 1
Triacs 25 Amp 800 Volt BTB24-800CWRG STMicroelectronics 1: HK$30.50 1,063In Stock	Mfr. Part No. BTB24-800CWRG Mouser Part No 511-BTB24-800CWRG	STMicroelectronics	Triacs 25 Amp 800 Volt Learn More about STMicroelectronics stm standard products	Datasheet	1,063In Stock	HK$30.50 HK$15.37 HK$13.89 HK$11.34 View HK$10.52 HK$7.77 HK$7.26 HK$7.25	Min.: 1 Mult.: 1
SCRs 50A STANDARD SCRs BTW67-1000 STMicroelectronics 1: HK$79.41 38In Stock 175Expected 23/11/2026	Mfr. Part No. BTW67-1000 Mouser Part No 511-BTW67-1000	STMicroelectronics	SCRs 50A STANDARD SCRs Learn More about STMicroelectronics stm standard products	Datasheet	38In Stock 175Expected 23/11/2026	HK$79.41 HK$49.07 HK$41.18 HK$37.24	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 8 Diode Array DALC208SC6 STMicroelectronics 1: HK$5.59 12,097In Stock 48,000On Order	Mfr. Part No. DALC208SC6 Mouser Part No 511-DALC208SC6	STMicroelectronics	ESD Protection Diodes / TVS Diodes 8 Diode Array Learn More about STMicroelectronics stm standard products	Datasheet	12,097In Stock 48,000On Order On Order Ship Dates Mfr. No: DALC208SC6 Stock: 12,097 Can Dispatch Immediately On Order: 18,000 Expected 1/3/2027 30,000 Expected 30/8/2027 Factory Lead Time: 25 Weeks	Cut Tape HK$5.59 HK$2.52 HK$2.21 HK$1.68 Reel HK$1.26 View HK$1.62 HK$1.09 HK$1.03 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes Automotive low capacitance diode array for ESD protection DALC208SC6Y STMicroelectronics 1: HK$6.08 2,806In Stock	Mfr. Part No. DALC208SC6Y Mouser Part No 511-DALC208SC6Y	STMicroelectronics	ESD Protection Diodes / TVS Diodes Automotive low capacitance diode array for ESD protection Learn More about STMicroelectronics stm standard products	Datasheet	2,806In Stock	Cut Tape HK$6.08 HK$2.84 HK$2.40 HK$1.82 Reel HK$1.48 View HK$1.73 HK$1.20 HK$1.16	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes Low clamping single line bidirectional ESD protection ESD051-1BF4 STMicroelectronics 1: HK$1.64 23,505In Stock	Mfr. Part No. ESD051-1BF4 Mouser Part No 511-ESD051-1BF4	STMicroelectronics	ESD Protection Diodes / TVS Diodes Low clamping single line bidirectional ESD protection	Datasheet	23,505In Stock	Cut Tape HK$1.64 HK$0.723 HK$0.559 HK$0.46 View Reel HK$0.206 HK$0.378 HK$0.329 HK$0.304 HK$0.222 HK$0.206 MouseReel Available	Min.: 1 Mult.: 1 : 15,000
ESD Protection Diodes / TVS Diodes 4-Ln Bidirect Array ESDA14V2BP6 STMicroelectronics 1: HK$5.51 1,752In Stock 24,000On Order	Mfr. Part No. ESDA14V2BP6 Mouser Part No 511-ESDA14V2BP6	STMicroelectronics	ESD Protection Diodes / TVS Diodes 4-Ln Bidirect Array Learn More about STMicroelectronics stm standard products	Datasheet	1,752In Stock 24,000On Order On Order Ship Dates Mfr. No: ESDA14V2BP6 Stock: 1,752 Can Dispatch Immediately On Order: 9,000 Expected 15/10/2026 15,000 Expected 22/3/2027 Factory Lead Time: 15 Weeks	Cut Tape HK$5.51 HK$2.64 HK$2.16 HK$1.72 Reel HK$1.16 View HK$1.55 HK$1.11 HK$1.08 HK$1.03 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 14.2V 500W Unidirect ESDA14V2SC6 STMicroelectronics 1: HK$4.60 121In Stock 18,000On Order	Mfr. Part No. ESDA14V2SC6 Mouser Part No 511-ESDA14V2SC6	STMicroelectronics	ESD Protection Diodes / TVS Diodes 14.2V 500W Unidirect Learn More about STMicroelectronics stm standard products	Datasheet	121In Stock 18,000On Order On Order Ship Dates Mfr. No: ESDA14V2SC6 Stock: 121 Can Dispatch Immediately On Order: 9,000 Expected 28/10/2026 9,000 Expected 17/3/2027 Factory Lead Time: 25 Weeks	Cut Tape HK$4.60 HK$2.06 HK$1.81 HK$1.36 Reel HK$1.01 View HK$1.31 HK$0.937 HK$0.822 HK$0.797 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes Quad Transil 4-Uni 400W < 20uA 25kV ESD ESDA19SC6 STMicroelectronics 1: HK$4.69 2,568In Stock 9,000On Order	Mfr. Part No. ESDA19SC6 Mouser Part No 511-ESDA19SC6	STMicroelectronics	ESD Protection Diodes / TVS Diodes Quad Transil 4-Uni 400W < 20uA 25kV ESD Learn More about STMicroelectronics stm standard products	Datasheet	2,568In Stock 9,000On Order	Cut Tape HK$4.69 HK$2.20 HK$1.81 HK$1.39 Reel HK$0.954 View HK$1.28 HK$0.921 HK$0.855 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes TRANSIL ARRAY ESD PROTECTION ESDA25-4BP6 STMicroelectronics 1: HK$5.34 1,667In Stock 102,000On Order	Mfr. Part No. ESDA25-4BP6 Mouser Part No 511-ESDA25-4BP6	STMicroelectronics	ESD Protection Diodes / TVS Diodes TRANSIL ARRAY ESD PROTECTION Learn More about STMicroelectronics stm standard products	Datasheet	1,667In Stock 102,000On Order On Order Ship Dates Mfr. No: ESDA25-4BP6 Stock: 1,667 Can Dispatch Immediately On Order: 45,000 Expected 26/10/2026 21,000 Expected 7/12/2026 36,000 Expected 12/1/2027 Factory Lead Time: 15 Weeks	Cut Tape HK$5.34 HK$2.49 HK$2.10 HK$1.65 Reel HK$1.21 View HK$1.50 HK$1.15 HK$1.05 HK$0.995 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes DUAL TRANSIL ARRAY FOR ESD PROTECTION ESDA37L STMicroelectronics 1: HK$3.29 4,193In Stock 39,000On Order	Mfr. Part No. ESDA37L Mouser Part No 511-ESDA37L	STMicroelectronics	ESD Protection Diodes / TVS Diodes DUAL TRANSIL ARRAY FOR ESD PROTECTION Learn More about STMicroelectronics stm standard products	Datasheet	4,193In Stock 39,000On Order On Order Ship Dates Mfr. No: ESDA37L Stock: 4,193 Can Dispatch Immediately On Order: 15,000 Expected 21/12/2026 24,000 Expected 11/1/2027 Factory Lead Time: 15 Weeks	Cut Tape HK$3.29 HK$1.47 HK$1.28 HK$0.954 Reel HK$0.649 View HK$0.855 HK$0.617 HK$0.559	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes Dual Transil™ array for ESD protection ESDA37W STMicroelectronics 1: HK$3.62 8,849In Stock	Mfr. Part No. ESDA37W Mouser Part No 511-ESDA37W	STMicroelectronics	ESD Protection Diodes / TVS Diodes Dual Transil array for ESD protection Learn More about STMicroelectronics stm standard products	Datasheet	8,849In Stock	Cut Tape HK$3.62 HK$1.69 HK$1.38 HK$1.04 Reel HK$0.764 View HK$0.921 HK$0.707 HK$0.658 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes Automotive dual Transil array for ESD protection ESDA37WY STMicroelectronics 1: HK$4.03 9,102In Stock	Mfr. Part No. ESDA37WY Mouser Part No 511-ESDA37WY	STMicroelectronics	ESD Protection Diodes / TVS Diodes Automotive dual Transil array for ESD protection Learn More about STMicroelectronics stm standard products	Datasheet	9,102In Stock	Cut Tape HK$4.03 HK$1.82 HK$1.63 HK$1.22 Reel HK$0.929 View HK$0.797 HK$0.74	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes DFD PROTECTION & FILTER ESDA5-1BF4 STMicroelectronics 1: HK$1.81 32,664In Stock	Mfr. Part No. ESDA5-1BF4 Mouser Part No 511-ESDA5-1BF4	STMicroelectronics	ESD Protection Diodes / TVS Diodes DFD PROTECTION & FILTER Learn More about STMicroelectronics stm standard products	Datasheet	32,664In Stock	Cut Tape HK$1.81 HK$0.797 HK$0.617 HK$0.51 View Reel HK$0.238 HK$0.362 HK$0.312 HK$0.288 HK$0.247 HK$0.238 MouseReel Available	Min.: 1 Mult.: 1 : 15,000
ESD Protection Diodes / TVS Diodes 5.3V 300W Unidirect ESDA5V3L STMicroelectronics 1: HK$3.12 13,618In Stock 39,000Expected 23/3/2027	Mfr. Part No. ESDA5V3L Mouser Part No 511-ESDA5V3L	STMicroelectronics	ESD Protection Diodes / TVS Diodes 5.3V 300W Unidirect Learn More about STMicroelectronics stm standard products	Datasheet	13,618In Stock 39,000Expected 23/3/2027	Cut Tape HK$3.12 HK$1.40 HK$1.22 HK$0.904 Reel HK$0.633 View HK$0.74 HK$0.543 HK$0.477 HK$0.452 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes Auto quad Transil 4 Uni 400W 330 Ohm ESDA5V3SC6Y STMicroelectronics 1: HK$5.67 1,107In Stock 33,000Expected 15/10/2026	Mfr. Part No. ESDA5V3SC6Y Mouser Part No 511-ESDA5V3SC6Y	STMicroelectronics	ESD Protection Diodes / TVS Diodes Auto quad Transil 4 Uni 400W 330 Ohm Learn More about STMicroelectronics stm standard products	Datasheet	1,107In Stock 33,000Expected 15/10/2026	Cut Tape HK$5.67 HK$2.72 HK$2.24 HK$1.70 Reel HK$1.30 View HK$1.53 HK$1.07 HK$1.03 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 6.1V 100W Unidirect ESDA6V1-5SC6 STMicroelectronics 1: HK$4.52 7,415In Stock 9,000Expected 3/5/2027	Mfr. Part No. ESDA6V1-5SC6 Mouser Part No 511-ESDA6V1-5SC6	STMicroelectronics	ESD Protection Diodes / TVS Diodes 6.1V 100W Unidirect Learn More about STMicroelectronics stm standard products	Datasheet	7,415In Stock 9,000Expected 3/5/2027	Cut Tape HK$4.52 HK$2.06 HK$1.74 HK$1.33 Reel HK$0.921 View HK$1.23 HK$0.88 HK$0.806 HK$0.74 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 6.1V 400W Unidirect ESDA6V1SC5 STMicroelectronics 1: HK$4.77 9,805In Stock 9,000Expected 26/10/2026	Mfr. Part No. ESDA6V1SC5 Mouser Part No 511-ESDA6V1SC5	STMicroelectronics	ESD Protection Diodes / TVS Diodes 6.1V 400W Unidirect Learn More about STMicroelectronics stm standard products	Datasheet	9,805In Stock 9,000Expected 26/10/2026	Cut Tape HK$4.77 HK$2.14 HK$1.87 HK$1.41 Reel HK$1.06 View HK$1.38 HK$0.995 HK$0.871 HK$0.806 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 6.1V 200W Unidirect ESDA6V1U1RL STMicroelectronics 1: HK$6.25 35,458In Stock 62,500Expected 31/3/2027	Mfr. Part No. ESDA6V1U1RL Mouser Part No 511-ESDA6V1U1-TR	STMicroelectronics	ESD Protection Diodes / TVS Diodes 6.1V 200W Unidirect Learn More about STMicroelectronics stm standard products	Datasheet	35,458In Stock 62,500Expected 31/3/2027	Cut Tape HK$6.25 HK$2.81 HK$2.47 HK$1.88 Reel HK$1.47 View HK$1.28 HK$1.25 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 30 A - 8/20 us, 6.3 V TVS in SOD882T ESDA8P30-1T2 STMicroelectronics 1: HK$3.29 23,568In Stock	Mfr. Part No. ESDA8P30-1T2 Mouser Part No 511-ESDA8P30-1T2	STMicroelectronics	ESD Protection Diodes / TVS Diodes 30 A - 8/20 us, 6.3 V TVS in SOD882T Learn More about STMicroelectronics stm esda8p30 diode	Datasheet	23,568In Stock	Cut Tape HK$3.29 HK$1.47 HK$1.28 HK$0.954 Reel HK$0.551 View HK$0.855 HK$0.756 HK$0.723 HK$0.493 MouseReel Available	Min.: 1 Mult.: 1 : 12,000
ESD Protection Diodes / TVS Diodes Low clamping, low capacitance bidirectional single line ESD protection ESDALC20-1BF4 STMicroelectronics 1: HK$1.97 25,465In Stock	Mfr. Part No. ESDALC20-1BF4 Mouser Part No 511-ESDALC20-1BF4	STMicroelectronics	ESD Protection Diodes / TVS Diodes Low clamping, low capacitance bidirectional single line ESD protection Learn More about STMicroelectronics stm standard products	Datasheet	25,465In Stock	Cut Tape HK$1.97 HK$0.88 HK$0.674 HK$0.559 View Reel HK$0.247 HK$0.452 HK$0.386 HK$0.362 HK$0.271 HK$0.247 MouseReel Available	Min.: 1 Mult.: 1 : 15,000
ESD Protection Diodes / TVS Diodes Quad Unidirect Array ESDALC6V1P5 STMicroelectronics 1: HK$5.84 8,029In Stock 9,000Expected 26/10/2026	Mfr. Part No. ESDALC6V1P5 Mouser Part No 511-ESDALC6V1P5	STMicroelectronics	ESD Protection Diodes / TVS Diodes Quad Unidirect Array Learn More about STMicroelectronics stm standard products	Datasheet	8,029In Stock 9,000Expected 26/10/2026	Cut Tape HK$5.84 HK$2.64 HK$2.32 HK$1.75 Reel HK$1.33 View HK$1.69 HK$1.32 HK$1.15 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 25W 6.1V Quad Array ESDALC6V1W5 STMicroelectronics 1: HK$4.44 50,500On Order	Mfr. Part No. ESDALC6V1W5 Mouser Part No 511-ESDALC6V1W5	STMicroelectronics	ESD Protection Diodes / TVS Diodes 25W 6.1V Quad Array Learn More about STMicroelectronics stm standard products	Datasheet	50,500On Order On Order Ship Dates Mfr. No: ESDALC6V1W5 Stock: 0 On Order: 26,500 Expected 12/10/2026 24,000 Expected 17/3/2027 Factory Lead Time: 15 Weeks	Cut Tape HK$4.44 HK$2.01 HK$1.70 HK$1.31 Reel HK$0.962 View HK$1.20 HK$0.912 HK$0.797 HK$0.723 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes N Ch 30V 0.009 Ohm 40A Pwr MOSFET ESDAULC6-3BP6 STMicroelectronics 1: HK$5.26 26,234In Stock	Mfr. Part No. ESDAULC6-3BP6 Mouser Part No 511-ESDAULC63BP6	STMicroelectronics	ESD Protection Diodes / TVS Diodes N Ch 30V 0.009 Ohm 40A Pwr MOSFET Learn More about STMicroelectronics stm standard products	Datasheet	26,234In Stock	Cut Tape HK$5.26 HK$2.50 HK$2.11 HK$1.66 Reel HK$1.14 View HK$1.50 HK$1.09 HK$1.02 HK$0.962 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes Automotive dual-line TVS in SOT323-3L for CAN bus (12 V system) ESDCAN04-2BWY STMicroelectronics 1: HK$3.45 27,157In Stock	Mfr. Part No. ESDCAN04-2BWY Mouser Part No 511-ESDCAN04-2BWY	STMicroelectronics	ESD Protection Diodes / TVS Diodes Automotive dual-line TVS in SOT323-3L for CAN bus (12 V system) Learn More about STMicroelectronics stm esdcan0x automotive tvs diodes	Datasheet	27,157In Stock	Cut Tape HK$3.45 HK$1.51 HK$1.32 HK$0.986 Reel HK$0.674 View HK$0.871 HK$0.608 HK$0.518 HK$0.469 MouseReel Available	Min.: 1 Mult.: 1 : 3,000

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