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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 Automotive 5000 W, 33 V TVS SM50T39AY STMicroelectronics 1: HK$23.34 2,289In Stock	Mfr. Part No. SM50T39AY Mouser Part No 511-SM50T39AY	STMicroelectronics	ESD Protection Diodes / TVS Diodes Automotive 5000 W, 33 V TVS Learn More about STMicroelectronics stm sm50txay 5000w tvs	Datasheet	2,289In Stock	Cut Tape HK$23.34 HK$15.04 HK$11.51 HK$10.36 Reel HK$6.93 View HK$8.30 HK$7.37 HK$6.28 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 1500 W 10kW Transil 5.8V tp 70V BI SM15T39CAY STMicroelectronics 1: HK$15.54 46,986In Stock	Mfr. Part No. SM15T39CAY Mouser Part No 511-SM15T39CAY	STMicroelectronics	ESD Protection Diodes / TVS Diodes 1500 W 10kW Transil 5.8V tp 70V BI Learn More about STMicroelectronics stmicro sm15ty transil	Datasheet	46,986In Stock	Cut Tape HK$15.54 HK$9.95 HK$7.42 HK$6.63 Reel HK$4.30 View HK$5.24 HK$4.75 HK$4.07 HK$3.83 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes Automotive 5000 W, 28 V TVS SM50T33AY STMicroelectronics 1: HK$23.34 2,450In Stock	Mfr. Part No. SM50T33AY Mouser Part No 511-SM50T33AY	STMicroelectronics	ESD Protection Diodes / TVS Diodes Automotive 5000 W, 28 V TVS Learn More about STMicroelectronics stm sm50txay 5000w tvs	Datasheet	2,450In Stock	Cut Tape HK$23.34 HK$15.04 HK$11.51 HK$10.36 Reel HK$6.93 View HK$8.30 HK$7.37 HK$6.28 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes Automotive 22 V TVS for load dump in D2PAK LDP01-26AY STMicroelectronics 1: HK$35.18 12,347In Stock	Mfr. Part No. LDP01-26AY Mouser Part No 511-LDP01-26AY	STMicroelectronics	ESD Protection Diodes / TVS Diodes Automotive 22 V TVS for load dump in D2PAK	Datasheet	12,347In Stock	Cut Tape HK$35.18 HK$23.10 HK$17.92 HK$16.11 Reel HK$12.25 View HK$13.48 HK$11.10 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
ESD Protection Diodes / TVS Diodes Automotive 600 W, 36 V TVS SM6F36AY STMicroelectronics 1: HK$6.00 4,094In Stock 6,000Expected 2/11/2026	Mfr. Part No. SM6F36AY Mouser Part No 511-SM6F36AY	STMicroelectronics	ESD Protection Diodes / TVS Diodes Automotive 600 W, 36 V TVS Learn More about STMicroelectronics stm sm6fxay tvs diodes	Datasheet	4,094In Stock 6,000Expected 2/11/2026	Cut Tape HK$6.00 HK$3.31 HK$2.24 HK$1.78 Reel HK$1.40 View HK$1.53 HK$1.19 HK$1.13 HK$1.04	Min.: 1 Mult.: 1 : 3,000
SCRs 16 A 800 V High Temperature SCR TN1605H-8T STMicroelectronics 1: HK$17.84 1,835In Stock	Mfr. Part No. TN1605H-8T Mouser Part No 511-TN1605H-8T	STMicroelectronics	SCRs 16 A 800 V High Temperature SCR Learn More about STMicroelectronics stm tn scrs	Datasheet	1,835In Stock	HK$17.84 HK$8.63 HK$7.71 HK$6.13 HK$5.24	Min.: 1 Mult.: 1
Triacs Transient Vltg Protected AC Switch ACS102-6T1-TR STMicroelectronics 1: HK$8.06 8,588In Stock	Mfr. Part No. ACS102-6T1-TR Mouser Part No 511-ACS102-6T1-TR	STMicroelectronics	Triacs Transient Vltg Protected AC Switch	Datasheet	8,588In Stock	Cut Tape HK$8.06 HK$5.01 HK$3.26 HK$2.51 Reel HK$2.00 View HK$2.27 HK$1.73 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Triacs AC POWER SWITCH 6 AMP LOAD <10 mA ACST610-8T STMicroelectronics 1: HK$13.97 4,341In Stock	Mfr. Part No. ACST610-8T Mouser Part No 511-ACST610-8T	STMicroelectronics	Triacs AC POWER SWITCH 6 AMP LOAD <10 mA Learn More about STMicroelectronics stm snubberless triacs	Datasheet	4,341In Stock	HK$13.97 HK$8.15 HK$7.13 HK$5.66 View HK$4.84 HK$4.45 HK$4.43	Min.: 1 Mult.: 1
Triacs 20 Amp 600 Volt BTA20-600CWRG STMicroelectronics 1: HK$18.66 3,793In Stock	Mfr. Part No. BTA20-600CWRG Mouser Part No 511-BTA20-600CW	STMicroelectronics	Triacs 20 Amp 600 Volt Learn More about STMicroelectronics stm standard products	Datasheet	3,793In Stock	HK$18.66 HK$8.88 HK$7.04 HK$5.96 HK$5.56	Min.: 1 Mult.: 1
Triacs 12 Amp 600 Volt BTB12-600BRG STMicroelectronics 1: HK$14.71 3,999In Stock	Mfr. Part No. BTB12-600BRG Mouser Part No 511-BTB12-600B	STMicroelectronics	Triacs 12 Amp 600 Volt Learn More about STMicroelectronics stm standard products	Datasheet	3,999In Stock	HK$14.71 HK$9.21 HK$4.57 HK$3.98 View HK$3.97 HK$3.77	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 1500W 100V Bidirect SM15T100CA STMicroelectronics 1: HK$13.23 10,359In Stock	Mfr. Part No. SM15T100CA Mouser Part No 511-SM15T100CA	STMicroelectronics	ESD Protection Diodes / TVS Diodes 1500W 100V Bidirect Learn More about STMicroelectronics stm standard products	Datasheet	10,359In Stock	Cut Tape HK$13.23 HK$9.29 HK$6.62 HK$5.45 Reel HK$3.67 View HK$4.44 HK$4.11 HK$3.49 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 1500W 200V Unidirect SM15T200A STMicroelectronics 1: HK$13.32 4,450In Stock	Mfr. Part No. SM15T200A Mouser Part No 511-SM15T200A	STMicroelectronics	ESD Protection Diodes / TVS Diodes 1500W 200V Unidirect Learn More about STMicroelectronics stm standard products	Datasheet	4,450In Stock	Cut Tape HK$13.32 HK$7.69 HK$6.32 HK$5.50 Reel HK$3.35 View HK$4.41 HK$4.00 HK$3.20 HK$3.06 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 1500 W 10kW Transil 5.8V tp 70V BI SM15T36CAY STMicroelectronics 1: HK$13.56 4,450In Stock	Mfr. Part No. SM15T36CAY Mouser Part No 511-SM15T36CAY	STMicroelectronics	ESD Protection Diodes / TVS Diodes 1500 W 10kW Transil 5.8V tp 70V BI Learn More about STMicroelectronics stmicro sm15ty transil	Datasheet	4,450In Stock	Cut Tape HK$13.56 HK$8.96 HK$7.42 HK$6.40 Reel HK$4.10 View HK$5.09 HK$4.61 HK$3.84 HK$3.69 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 1500 W 10kW Transil 5.8V tp 70V BI SM15T56CAY STMicroelectronics 1: HK$16.44 5,000In Stock	Mfr. Part No. SM15T56CAY Mouser Part No 511-SM15T56CAY	STMicroelectronics	ESD Protection Diodes / TVS Diodes 1500 W 10kW Transil 5.8V tp 70V BI Learn More about STMicroelectronics stmicro sm15ty transil	Datasheet	5,000In Stock	Cut Tape HK$16.44 HK$10.36 HK$7.87 HK$6.87 Reel HK$4.47 View HK$5.44 HK$4.75 HK$4.07 HK$3.85 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes Automotive 3000 W, 36 V TVS in SMC SM30T42AY STMicroelectronics 1: HK$16.52 15,464In Stock	Mfr. Part No. SM30T42AY Mouser Part No 511-SM30T42AY	STMicroelectronics	ESD Protection Diodes / TVS Diodes Automotive 3000 W, 36 V TVS in SMC Learn More about STMicroelectronics stmicro sm30ty transil	Datasheet	15,464In Stock	Cut Tape HK$16.52 HK$10.52 HK$7.91 HK$7.07 Reel HK$4.69 View HK$5.60 HK$5.01 HK$4.26 HK$4.04 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes Automotive 3000 W, 48 V TVS in SMC SM30T56AY STMicroelectronics 1: HK$16.52 6,270In Stock	Mfr. Part No. SM30T56AY Mouser Part No 511-SM30T56AY	STMicroelectronics	ESD Protection Diodes / TVS Diodes Automotive 3000 W, 48 V TVS in SMC Learn More about STMicroelectronics stmicro sm30ty transil	Datasheet	6,270In Stock	Cut Tape HK$16.52 HK$10.52 HK$7.91 HK$7.07 Reel HK$4.69 View HK$5.60 HK$5.00 HK$4.26 HK$4.04 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 400 W 2.3kW Transil 5V to 70V Bi SM4T26CAY STMicroelectronics 1: HK$13.65 5,802In Stock	Mfr. Part No. SM4T26CAY Mouser Part No 511-SM4T26CAY	STMicroelectronics	ESD Protection Diodes / TVS Diodes 400 W 2.3kW Transil 5V to 70V Bi Learn More about STMicroelectronics stmicro sm4ty automotive transil	Datasheet	5,802In Stock	Cut Tape HK$13.65 HK$7.77 HK$6.40 HK$5.41 Reel HK$3.47 View HK$4.17 HK$3.85 HK$3.75 HK$3.21 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
ESD Protection Diodes / TVS Diodes 400 W 2.3kW Transil 5V to 70V Bi SM4T30CAY STMicroelectronics 1: HK$13.73 8,266In Stock	Mfr. Part No. SM4T30CAY Mouser Part No 511-SM4T30CAY	STMicroelectronics	ESD Protection Diodes / TVS Diodes 400 W 2.3kW Transil 5V to 70V Bi Learn More about STMicroelectronics stmicro sm4ty automotive transil	Datasheet	8,266In Stock	Cut Tape HK$13.73 HK$7.74 HK$6.35 HK$5.41 Reel HK$3.35 View HK$4.38 HK$4.15 HK$3.86 HK$3.21 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
ESD Protection Diodes / TVS Diodes 400 W 2.3kW Transil 5V to 70V Uni SM4T56AY STMicroelectronics 1: HK$12.49 4,804In Stock	Mfr. Part No. SM4T56AY Mouser Part No 511-SM4T56AY	STMicroelectronics	ESD Protection Diodes / TVS Diodes 400 W 2.3kW Transil 5V to 70V Uni Learn More about STMicroelectronics stmicro sm4ty automotive transil	Datasheet	4,804In Stock	Cut Tape HK$12.49 HK$7.42 HK$7.12 HK$4.96 Reel HK$3.58 View HK$4.09 HK$3.72 HK$3.63 HK$3.38 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
ESD Protection Diodes / TVS Diodes 600 W 4kW Transil 6V to 70V Uni SM6T33AY STMicroelectronics 1: HK$8.06 8,079In Stock	Mfr. Part No. SM6T33AY Mouser Part No 511-SM6T33AY	STMicroelectronics	ESD Protection Diodes / TVS Diodes 600 W 4kW Transil 6V to 70V Uni Learn More about STMicroelectronics stmicro sm6ty 600w transil	Datasheet	8,079In Stock	Cut Tape HK$8.06 HK$3.71 HK$3.28 HK$2.52 Reel HK$2.00 HK$1.75 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 600 W 4kW Transil 6V to 70V Uni SM6T39AY STMicroelectronics 1: HK$14.80 4,063In Stock	Mfr. Part No. SM6T39AY Mouser Part No 511-SM6T39AY	STMicroelectronics	ESD Protection Diodes / TVS Diodes 600 W 4kW Transil 6V to 70V Uni Learn More about STMicroelectronics stmicro sm6ty 600w transil	Datasheet	4,063In Stock	Cut Tape HK$14.80 HK$9.45 HK$7.05 HK$6.29 Reel HK$3.87 View HK$4.96 HK$4.31 HK$3.63 HK$3.53 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 600 W 4kW Transil 6V to 70V Uni SM6T75AY STMicroelectronics 1: HK$10.19 6,714In Stock	Mfr. Part No. SM6T75AY Mouser Part No 511-SM6T75AY	STMicroelectronics	ESD Protection Diodes / TVS Diodes 600 W 4kW Transil 6V to 70V Uni Learn More about STMicroelectronics stmicro sm6ty 600w transil	Datasheet	6,714In Stock	Cut Tape HK$10.19 HK$4.73 HK$4.19 HK$3.25 Reel HK$2.61 View HK$3.24 HK$2.56 HK$2.30 HK$2.07 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes 600W 4kW Transil SMA 5V to 70V Bi SMA6T22CAY STMicroelectronics 1: HK$16.69 3,141In Stock	Mfr. Part No. SMA6T22CAY Mouser Part No 511-SMA6T22CAY	STMicroelectronics	ESD Protection Diodes / TVS Diodes 600W 4kW Transil SMA 5V to 70V Bi Learn More about STMicroelectronics stmicro sma6ty automotive transil	Datasheet	3,141In Stock	Cut Tape HK$16.69 HK$10.69 HK$8.01 HK$7.16 Reel HK$4.35 View HK$5.67 HK$5.08 HK$4.85 HK$3.96 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
ESD Protection Diodes / TVS Diodes 600W 4kW Transil SMA 5V to 70V Uni SMA6T33AY STMicroelectronics 1: HK$15.86 14,517In Stock	Mfr. Part No. SMA6T33AY Mouser Part No 511-SMA6T33AY	STMicroelectronics	ESD Protection Diodes / TVS Diodes 600W 4kW Transil SMA 5V to 70V Uni Learn More about STMicroelectronics stmicro sma6ty automotive transil	Datasheet	14,517In Stock	Cut Tape HK$15.86 HK$10.11 HK$7.58 HK$6.77 Reel HK$3.95 View HK$5.35 HK$4.74 HK$4.53 HK$3.94 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
ESD Protection Diodes / TVS Diodes Automotive 600 W Transil in SMA pkg SMA6T33CAY STMicroelectronics 1: HK$14.47 7,573In Stock	Mfr. Part No. SMA6T33CAY Mouser Part No 511-SMA6T33CAY	STMicroelectronics	ESD Protection Diodes / TVS Diodes Automotive 600 W Transil in SMA pkg Learn More about STMicroelectronics stmicro sma6ty automotive transil	Datasheet	7,573In Stock	Cut Tape HK$14.47 HK$9.62 HK$6.71 HK$5.92 Reel HK$4.23 View HK$4.89 HK$4.59 HK$4.51 HK$3.96 MouseReel Available	Min.: 1 Mult.: 1 : 5,000

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