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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.
ESD Protection Diodes / TVS Diodes Quad Unidirect Array ESDALC6V1P5 STMicroelectronics 1: HK$5.84 8,029In Stock 15,000On Order	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 15,000On Order On Order Ship Dates Mfr. No: ESDALC6V1P5 Stock: 8,029 Can Dispatch Immediately On Order: 6,000 Expected 2/11/2026 9,000 Expected 5/11/2026 Factory Lead Time: 15 Weeks	Cut Tape HK$5.84 HK$2.64 HK$2.32 HK$1.75 Reel HK$1.32 View HK$1.72 HK$1.30 HK$1.15 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes Quad Unidirect Array ESDALC6V1P6 STMicroelectronics 1: HK$5.51 5,535In Stock 36,000On Order	Mfr. Part No. ESDALC6V1P6 Mouser Part No 511-ESDALC6V1P6	STMicroelectronics	ESD Protection Diodes / TVS Diodes Quad Unidirect Array Learn More about STMicroelectronics stm standard products	Datasheet	5,535In Stock 36,000On Order On Order Ship Dates Mfr. No: ESDALC6V1P6 Stock: 5,535 Can Dispatch Immediately On Order: 18,000 Expected 5/11/2026 18,000 Expected 8/2/2027 Factory Lead Time: 15 Weeks	Cut Tape HK$5.51 HK$2.46 HK$2.16 HK$1.63 Reel HK$1.19 View HK$1.54 HK$1.18 HK$1.03 HK$0.97 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) ESDCAN03-2BWY STMicroelectronics 1: HK$4.36 1,793In Stock 321,000On Order	Mfr. Part No. ESDCAN03-2BWY Mouser Part No 511-ESDCAN03-2BWY	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	1,793In Stock 321,000On Order	Cut Tape HK$4.36 HK$2.24 HK$1.66 HK$1.26 Reel HK$0.921 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$3.12 26,256In 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	26,256In Stock	Cut Tape HK$3.12 HK$1.37 HK$1.20 HK$0.888 Reel HK$0.617 View HK$0.781 HK$0.60 HK$0.526 HK$0.51 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes Automotive dual-line TVS in SOT323-3L for CAN bus (24 V system) ESDCAN06-2BWY STMicroelectronics 1: HK$4.60 2,067In Stock 114,000On Order	Mfr. Part No. ESDCAN06-2BWY Mouser Part No 511-ESDCAN06-2BWY	STMicroelectronics	ESD Protection Diodes / TVS Diodes Automotive dual-line TVS in SOT323-3L for CAN bus (24 V system) Learn More about STMicroelectronics stm esdcan0x automotive tvs diodes	Datasheet	2,067In Stock 114,000On Order On Order Ship Dates Mfr. No: ESDCAN06-2BWY Stock: 2,067 Can Dispatch Immediately On Order: 33,000 Expected 21/12/2026 45,000 Expected 14/4/2027 36,000 Expected 26/5/2027 Factory Lead Time: 40 Weeks	Cut Tape HK$4.60 HK$2.75 HK$1.64 HK$1.31 HK$1.09 Reel HK$0.674 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes Ultra-low clamping single line bidirectional ESD protection ESDL031-1BF4 STMicroelectronics 1: HK$1.40 42,673In Stock 45,000Expected 5/11/2026	Mfr. Part No. ESDL031-1BF4 Mouser Part No 511-ESDL031-1BF4	STMicroelectronics	ESD Protection Diodes / TVS Diodes Ultra-low clamping single line bidirectional ESD protection Learn More about STMicroelectronics stmicro esdl031 1bf4 esd protection	Datasheet	42,673In Stock 45,000Expected 5/11/2026	Cut Tape HK$1.40 HK$0.608 HK$0.444 HK$0.37 View Reel HK$0.197 HK$0.312 HK$0.271 HK$0.255 HK$0.23 HK$0.197 MouseReel Available	Min.: 1 Mult.: 1 : 15,000
ESD Protection Diodes / TVS Diodes Automotive 26.5 V TVS for LIN bus in SOT323-3L ESDLIN03-1BWY STMicroelectronics 1: HK$4.11 11,835In Stock	Mfr. Part No. ESDLIN03-1BWY Mouser Part No 511-ESDLIN03-1BWY	STMicroelectronics	ESD Protection Diodes / TVS Diodes Automotive 26.5 V TVS for LIN bus in SOT323-3L Learn More about STMicroelectronics stm esdlin03 1bwy suppressor	Datasheet	11,835In Stock	Cut Tape HK$4.11 HK$1.82 HK$1.60 HK$1.20 Reel HK$0.896 View HK$1.15 HK$0.797 HK$0.756 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes Ultra Low clamping single line bidirectional ESD protection ESDZV5-1BF4 STMicroelectronics 1: HK$1.07 82,317In Stock	Mfr. Part No. ESDZV5-1BF4 Mouser Part No 511-ESDZV5-1BF4	STMicroelectronics	ESD Protection Diodes / TVS Diodes Ultra Low clamping single line bidirectional ESD protection Learn More about STMicroelectronics stm esdzv5 1bf4 tvs diode	Datasheet	82,317In Stock	Cut Tape HK$1.07 HK$0.518 HK$0.477 HK$0.345 View Reel HK$0.173 HK$0.329 HK$0.288 HK$0.271 HK$0.197 HK$0.173 MouseReel Available	Min.: 1 Mult.: 1 : 15,000
ESD Protection Diodes / TVS Diodes Ultra Low clamping single line bidirectional ESD protection ESDZV5-1BU2 STMicroelectronics 1: HK$1.48 950In Stock	Mfr. Part No. ESDZV5-1BU2 Mouser Part No 511-ESDZV5-1BU2	STMicroelectronics	ESD Protection Diodes / TVS Diodes Ultra Low clamping single line bidirectional ESD protection	Datasheet	950In Stock	Cut Tape HK$1.48 HK$0.682 HK$0.526 HK$0.395 View Reel HK$0.189 HK$0.345 HK$0.296 HK$0.271 HK$0.206 HK$0.189 MouseReel Available	Min.: 1 Mult.: 1 : 15,000
ESD Protection Diodes / TVS Diodes Ultra Low clamping single line bidirectional ESD protection in extra small 01005 ESDZV5-1BV2 STMicroelectronics 1: HK$1.40 81,457In Stock	Mfr. Part No. ESDZV5-1BV2 Mouser Part No 511-ESDZV5-1BV2	STMicroelectronics	ESD Protection Diodes / TVS Diodes Ultra Low clamping single line bidirectional ESD protection in extra small 01005	Datasheet	81,457In Stock	Cut Tape HK$1.40 HK$0.625 HK$0.485 HK$0.37 View Reel HK$0.189 HK$0.312 HK$0.271 HK$0.255 HK$0.189 HK$0.189	Min.: 1 Mult.: 1 : 20,000
ESD Protection Diodes / TVS Diodes Automotive 2-line ESD protection for high speed lines HSP051-2W3Y STMicroelectronics 1: HK$5.10 4,417In Stock	Mfr. Part No. HSP051-2W3Y Mouser Part No 511-HSP051-2W3Y	STMicroelectronics	ESD Protection Diodes / TVS Diodes Automotive 2-line ESD protection for high speed lines Learn More about STMicroelectronics stm hsp051 2w3y esd array	Datasheet	4,417In Stock	Cut Tape HK$5.10 HK$2.27 HK$2.00 HK$1.50 Reel HK$1.13 View HK$0.97 HK$0.945	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes 4-line ESD protection for high-speed lines HSP053-4M5 STMicroelectronics 1: HK$3.86 13,396In Stock 179,800Expected 5/11/2026	Mfr. Part No. HSP053-4M5 Mouser Part No 511-HSP053-4M5	STMicroelectronics	ESD Protection Diodes / TVS Diodes 4-line ESD protection for high-speed lines Learn More about STMicroelectronics stm hsp053 4m5 array	Datasheet	13,396In Stock 179,800Expected 5/11/2026	Cut Tape HK$3.86 HK$1.87 HK$1.36 HK$1.21 Reel HK$0.625 View HK$0.945 HK$0.822 HK$0.534 MouseReel Available	Min.: 1 Mult.: 1 : 6,000
ESD Protection Diodes / TVS Diodes Automotive 24 V TVS for load dump in D2PAK LDP01-28AY STMicroelectronics 1: HK$37.57 622In Stock	Mfr. Part No. LDP01-28AY Mouser Part No 511-LDP01-28AY	STMicroelectronics	ESD Protection Diodes / TVS Diodes Automotive 24 V TVS for load dump in D2PAK	Datasheet	622In Stock	Cut Tape HK$37.57 HK$24.74 HK$19.73 HK$17.26 Reel HK$12.82 View HK$14.88 HK$12.25 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
ESD Protection Diodes / TVS Diodes Automotive 36 V TVS for load dump in D2PAK LDP01-42AY STMicroelectronics 1: HK$34.85 653In Stock	Mfr. Part No. LDP01-42AY Mouser Part No 511-LDP01-42AY	STMicroelectronics	ESD Protection Diodes / TVS Diodes Automotive 36 V TVS for load dump in D2PAK	Datasheet	653In Stock	Cut Tape HK$34.85 HK$22.93 HK$18.25 HK$15.95 Reel HK$11.75 View HK$13.65 HK$10.69 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
SCRs 0.25A SCR P0102AL 5AA4 STMicroelectronics 1: HK$6.33 7,005In Stock 24,000On Order	Mfr. Part No. P0102AL 5AA4 Mouser Part No 511-P0102AL	STMicroelectronics	SCRs 0.25A SCR Learn More about STMicroelectronics stm standard products	Datasheet	7,005In Stock 24,000On Order	Cut Tape HK$6.33 HK$4.02 HK$2.60 HK$1.98 Reel HK$1.52 View HK$1.78 HK$1.39 HK$1.27 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
SCRs THYRISTOR P0102MN 5AA4 STMicroelectronics 1: HK$5.18 8,657In Stock	Mfr. Part No. P0102MN 5AA4 Mouser Part No 511-P0102MN5AA4	STMicroelectronics	SCRs THYRISTOR Learn More about STMicroelectronics stm standard products	Datasheet	8,657In Stock	Cut Tape HK$5.18 HK$3.21 HK$2.06 HK$1.55 Reel HK$1.34 View HK$1.16 HK$1.00 HK$0.921 HK$0.863 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
SCRs 0.8A SCRS P0111MN 5AA4 STMicroelectronics 1: HK$4.69 5,233In Stock	Mfr. Part No. P0111MN 5AA4 Mouser Part No 511-P0111MN-5AA4	STMicroelectronics	SCRs 0.8A SCRS Learn More about STMicroelectronics stm standard products	Datasheet	5,233In Stock	Cut Tape HK$4.69 HK$2.89 HK$1.84 HK$1.38 Reel HK$1.23 View HK$1.04 HK$0.929 HK$0.888 HK$0.806 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Board Mount Surge Protectors Dual current limited over Vltg PCLT-2AT4-TR STMicroelectronics 1: HK$42.99 89In Stock	Mfr. Part No. PCLT-2AT4-TR Mouser Part No 511-PCLT-2AT4-TR	STMicroelectronics	Board Mount Surge Protectors Dual current limited over Vltg	Datasheet	89In Stock	Cut Tape HK$42.99 HK$27.54 HK$21.45 HK$19.97 View Reel HK$12.66 HK$18.74 HK$16.44 HK$13.65 HK$12.66 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 1500W 100V Unidirect SM15T100A STMicroelectronics 1: HK$13.97 2,609In Stock 2,500Expected 25/11/2026	Mfr. Part No. SM15T100A Mouser Part No 511-SM15T100A	STMicroelectronics	ESD Protection Diodes / TVS Diodes 1500W 100V Unidirect Learn More about STMicroelectronics stm standard products	Datasheet	2,609In Stock 2,500Expected 25/11/2026	Cut Tape HK$13.97 HK$8.88 HK$6.63 HK$5.91 Reel HK$3.81 View HK$4.63 HK$4.27 HK$3.38 HK$3.30 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 1500 W 10kW Transil 5.8V to 70V Uni SM15T12AY STMicroelectronics 1: HK$14.96 1,986In Stock	Mfr. Part No. SM15T12AY Mouser Part No 511-SM15T12AY	STMicroelectronics	ESD Protection Diodes / TVS Diodes 1500 W 10kW Transil 5.8V to 70V Uni Learn More about STMicroelectronics stmicro sm15ty transil	Datasheet	1,986In Stock	Cut Tape HK$14.96 HK$9.54 HK$7.79 HK$6.51 Reel HK$3.92 View HK$5.07 HK$4.37 HK$3.64 HK$3.63 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 1500W 12V Bidirect SM15T12CA STMicroelectronics 1: HK$14.06 2,939In Stock	Mfr. Part No. SM15T12CA Mouser Part No 511-SM15T12CA	STMicroelectronics	ESD Protection Diodes / TVS Diodes 1500W 12V Bidirect Learn More about STMicroelectronics stm standard products	Datasheet	2,939In Stock	Cut Tape HK$14.06 HK$8.88 HK$6.65 HK$5.93 Reel HK$3.81 View HK$4.64 HK$4.29 HK$3.32 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 1500W 150V Bidirect SM15T150CA STMicroelectronics 1: HK$13.56 2,591In Stock	Mfr. Part No. SM15T150CA Mouser Part No 511-SM15T150CA	STMicroelectronics	ESD Protection Diodes / TVS Diodes 1500W 150V Bidirect Learn More about STMicroelectronics stm standard products	Datasheet	2,591In Stock	Cut Tape HK$13.56 HK$8.05 HK$6.61 HK$5.80 Reel HK$3.60 View HK$4.86 HK$4.22 HK$3.51 HK$3.49 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 1500W 18V Unidirect SM15T18A STMicroelectronics 1: HK$14.80 2,950In Stock	Mfr. Part No. SM15T18A Mouser Part No 511-SM15T18A	STMicroelectronics	ESD Protection Diodes / TVS Diodes 1500W 18V Unidirect Learn More about STMicroelectronics stm standard products	Datasheet	2,950In Stock	Cut Tape HK$14.80 HK$9.37 HK$6.96 HK$6.19 Reel HK$3.86 View HK$4.78 HK$4.05 HK$2.90 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 1500W 18V Bidirect SM15T18CA STMicroelectronics 1: HK$13.97 2,080In Stock	Mfr. Part No. SM15T18CA Mouser Part No 511-SM15T18CA	STMicroelectronics	ESD Protection Diodes / TVS Diodes 1500W 18V Bidirect Learn More about STMicroelectronics stm standard products	Datasheet	2,080In Stock	Cut Tape HK$13.97 HK$8.88 HK$6.62 HK$5.90 Reel HK$3.79 View HK$4.61 HK$4.27 HK$3.37 HK$3.30 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 1500W 200V Bidirect SM15T200CA STMicroelectronics 1: HK$14.55 734In Stock 2,500Expected 12/2/2027	Mfr. Part No. SM15T200CA Mouser Part No 511-SM15T200CA	STMicroelectronics	ESD Protection Diodes / TVS Diodes 1500W 200V Bidirect Learn More about STMicroelectronics stm standard products	Datasheet	734In Stock 2,500Expected 12/2/2027	Cut Tape HK$14.55 HK$9.29 HK$6.92 HK$6.17 Reel HK$3.94 View HK$4.86 HK$4.50 HK$3.54 HK$3.49 MouseReel Available	Min.: 1 Mult.: 1 : 2,500

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