DIACs, SIDACs

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Mfr Part #	Quantity Available	Price	Series	Package	Product Status	Voltage - Breakover	Current - Breakover	Current - Hold (Ih) (Max)	Current - Peak Output	Operating Temperature	Package / Case	Supplier Device Package
SMDB3 DIAC/SIDAC 28-36V 1A SOT23-3 STMicroelectronics	17,555 In Stock	1 : $1.49000 Cut Tape (CT) 3,000 : $0.30102 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	28 ~ 36V	10 µA	-	1 A	-40°C ~ 125°C (TJ)	TO-236-3, SC-59, SOT-23-3	SOT-23-3
DB3 DIAC/SIDAC 28-36V 2A DO-35 STMicroelectronics	9,879 In Stock	1 : $0.39000 Cut Tape (CT) 5,000 : $0.07326 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	28 ~ 36V	50 µA	-	2 A	-40°C ~ 125°C (TJ)	DO-204AH, DO-35, Axial	DO-35
DB4 DIAC/SIDAC 35-45V 2A DO-35 STMicroelectronics	8,199 In Stock	1 : $0.46000 Cut Tape (CT) 5,000 : $0.08753 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT)	Active	35 ~ 45V	50 µA	-	2 A	-40°C ~ 125°C (TJ)	DO-204AH, DO-35, Axial	DO-35
TMMDB3 DIAC/SIDAC 28-36V 2A MINI MELF STMicroelectronics	150,206 In Stock	1 : $0.87000 Cut Tape (CT) 2,500 : $0.16595 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	28 ~ 36V	50 µA	-	2 A	-40°C ~ 125°C (TJ)	DO-213AA	Mini MELF
DB3TG DIAC/SIDAC 30-34V 2A DO-35 STMicroelectronics	20 In Stock	1 : $0.39000 Cut Tape (CT) 5,000 : $0.07326 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	30 ~ 34V	15 µA	-	2 A	-40°C ~ 125°C (TJ)	DO-204AH, DO-35, Axial	DO-35
TMMDB3TG DIAC/SIDAC 30-34V 2A MINI MELF STMicroelectronics	0 In Stock Check Lead Time	1 : $0.87000 Cut Tape (CT) 2,500 : $0.19522 Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	30 ~ 34V	15 µA	-	2 A	-40°C ~ 125°C (TJ)	DO-213AA	Mini MELF
LIC01-195H DIAC/SIDAC 195-230V 1.2A IPAK STMicroelectronics	0 In Stock	3,000 : $1.42096 Tube	ASD™	Tube	Obsolete	195 ~ 230V	500 µA	50 mA	1.2 A	-20°C ~ 125°C (TJ)	TO-251-3 Short Leads, IPAK, TO-251AA	IPAK
LIC01-215H DIAC/SIDAC 215-255V 1.2A IPAK STMicroelectronics	0 In Stock Check Lead Time	3,000 : $1.64609 Tube	ASD™	Tube	Active	215 ~ 255V	500 µA	50 mA	1.2 A	-20°C ~ 125°C (TJ)	TO-251-3 Short Leads, IPAK, TO-251AA	IPAK
LIC01-215B-TR DIAC/SIDAC 215-255V 1.2A DPAK STMicroelectronics	0 In Stock	Active	-	Tape & Reel (TR)	Active	215 ~ 255V	500 µA	50 mA	1.2 A	-20°C ~ 125°C (TJ)	TO-252-3, DPAK (2 Leads + Tab), SC-63	DPAK

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Products in the DIAC and SIDAC family are two-terminal devices most commonly used as triggering mechanisms in AC phase control applications. They act to oppose current flow until the voltage applied across them reaches some critical value, at which point current flow through them increases significantly. The two differ in the shape of their characteristic curves; DIACs (Diodes for Alternating Current) generally exhibit higher forward voltages in their conductive mode, and thus tend to be less suitable than SIDACs (Silicon Diode for Alternating Current) when substantial current flow is an application requirement.