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UltraCMOS® RF Digital Step Attenuators

pSemi UltraCMOS® RF Digital Step Attenuators (DSAs) offer flexibility and performance for wireless and broadband infrastructure equipment, LMRs, test-and-measurement equipment, and military RF applications. The UltraCMOS RF DSAs are offered in 50Ω and 75Ω variants, with multiple programming mode options, including serial, direct parallel, and latched parallel, making it easy to design them into a wide range of systems. These devices offer best-in-class linearity, outstanding attenuation accuracy, and low insertion loss.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (JPY) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS	ECAD Model	Package / Case	Attenuation	Maximum Frequency	Impedance	Number of Bits	Number of Channels	Attenuator Step Size
	Attenuators 50ohm 6 Bit 31.5dB 0.5dB, 1.0dB Digital Step Attenuator, optional ext. Vss PE43508A-V pSemi 1: ¥16,292.7 215In Stock	Mfr. Part # PE43508A-V Mouser Part # 81-PE43508A-V	pSemi	Attenuators 50ohm 6 Bit 31.5dB 0.5dB, 1.0dB Digital Step Attenuator, optional ext. Vss Learn More about pSemi ultracmos rf dsa	Datasheet	215In Stock	Cut Tape ¥16,292.7 ¥13,626.8 ¥12,558.8 ¥12,229.9 Reel ¥11,592.1 Quote Quote MouseReel Available	Min.: 1 Mult.: 1 : 250			Die	31.5 dB	55 GHz	50 Ohms	6 bit	1 Channel	1 dB
	Attenuators 50ohm 6Bit 31.5dB 0.5dB Digital Step Attenuator PE4312C-Z pSemi 1: ¥730.8 10,099In Stock 42,000On Order	Mfr. Part # PE4312C-Z Mouser Part # 81-PE4312C-Z	pSemi	Attenuators 50ohm 6Bit 31.5dB 0.5dB Digital Step Attenuator Learn More about pSemi ultracmos rf dsa	Datasheet	10,099In Stock 42,000On Order On Order Ship Dates Mfr. #: PE4312C-Z Stock: 10,099 Can Ship Immediately On Order: 24,000 Expected 4/9/2027 18,000 Expected 4/23/2027 Factory Lead-Time: 24 Weeks	Cut Tape ¥730.8 ¥599.6 ¥558.1 ¥509.9 View Reel ¥465.1 ¥493.3 ¥465.1 Quote MouseReel Available	Min.: 1 Mult.: 1 : 3,000			QFN-20	31.5 dB	4 GHz	50 Ohms	6 bit	1 Channel	0.5 dB
	Attenuators 50ohm 7Bit 31.75dB 0.25dB, 0.5dB, 1.0dB Digital Step Attenuator, optional PE43713B-Z pSemi 1: ¥3,587.8 6,818In Stock 6,000Expected 11/2/2026	Mfr. Part # PE43713B-Z Mouser Part # 81-PE43713B-Z	pSemi	Attenuators 50ohm 7Bit 31.75dB 0.25dB, 0.5dB, 1.0dB Digital Step Attenuator, optional Learn More about pSemi ultracmos rf dsa	Datasheet	6,818In Stock 6,000Expected 11/2/2026	Cut Tape ¥3,587.8 ¥3,029.7 ¥2,855.3 ¥2,646 View Reel ¥2,310.5 ¥2,533 ¥2,493.2 ¥2,491.5 ¥2,310.5 MouseReel Available	Min.: 1 Mult.: 1 : 3,000			QFN-32	31 dB	6 GHz	50 Ohms	7 bit	1 Channel	1 dB
	Attenuators 75ohm 6Bit 31.5dB 0.5dB Digital Step Attenuator, optional ext. Vss PE4314B-Z pSemi 1: ¥594.6 3,502In Stock	Mfr. Part # PE4314B-Z Mouser Part # 81-PE4314B-Z	pSemi	Attenuators 75ohm 6Bit 31.5dB 0.5dB Digital Step Attenuator, optional ext. Vss Learn More about pSemi ultracmos rf dsa	Datasheet	3,502In Stock	Cut Tape ¥594.6 ¥490 ¥455.1 ¥413.6 View Reel ¥355.5 ¥392 ¥378.7 ¥362.1 ¥355.5 Quote MouseReel Available	Min.: 1 Mult.: 1 : 3,000			QFN-20	31.5 dB	2.5 GHz	75 Ohms	6 bit	1 Channel	0.5 dB
	Attenuators 50ohm 2Bit 18.0dB 6.0dB Digital Step Attenuator PE43205B-Z pSemi 1: ¥387 55,439On Order	Mfr. Part # PE43205B-Z Mouser Part # 81-PE43205B-Z	pSemi	Attenuators 50ohm 2Bit 18.0dB 6.0dB Digital Step Attenuator Learn More about pSemi ultracmos rf dsa	Datasheet	55,439On Order On Order Ship Dates Mfr. #: PE43205B-Z Stock: 0 On Order: 1,439 Expected 12/21/2026 30,000 Expected 1/25/2027 24,000 Expected 2/26/2027 Factory Lead-Time: 24 Weeks	Cut Tape ¥387 ¥313.9 ¥290.7 ¥264.1 Reel ¥220.9 View ¥249.2 ¥240.8 ¥232.5 ¥212.6 MouseReel Available	Min.: 1 Mult.: 1 : 3,000			QFN-12	18 dB	6 GHz	50 Ohms	2 bit	1 Channel	12 dB
	Attenuators ext. Vss PE43711B-Z pSemi 1: ¥1,214.2 23,085Expected 12/18/2026	Mfr. Part # PE43711B-Z Mouser Part # 81-PE43711B-Z	pSemi	Attenuators ext. Vss Learn More about pSemi ultracmos rf dsa	Datasheet	23,085Expected 12/18/2026	Cut Tape ¥1,214.2 ¥1,001.6 ¥936.8 ¥858.7 View Reel ¥722.5 ¥805.6 ¥790.6 ¥764.1 ¥722.5 MouseReel Available	Min.: 1 Mult.: 1 : 3,000			QFN-24	31.75 dB	6 GHz	50 Ohms	7 bit	1 Channel	1 dB
	Attenuators 50ohm 7Bit 31.75dB 0.25dB, 0.5dB, 1.0dB Digital Step Attenuator, w/o PE43712B-Z pSemi 1: ¥1,330.5 62,102Expected 3/12/2027	Mfr. Part # PE43712B-Z Mouser Part # 81-PE43712B-Z	pSemi	Attenuators 50ohm 7Bit 31.75dB 0.25dB, 0.5dB, 1.0dB Digital Step Attenuator, w/o Learn More about pSemi ultracmos rf dsa	Datasheet	62,102Expected 3/12/2027	Cut Tape ¥1,330.5 ¥1,083 ¥1,013.2 ¥930.2 View Reel ¥760.7 ¥872 ¥855.4 ¥827.2 ¥760.7 MouseReel Available	Min.: 1 Mult.: 1 : 3,000			QFN-32	31.75 dB	6 GHz	50 Ohms	7 bit	1 Channel	1 dB
	Attenuators 50ohm 2Bit 18.0dB 6.0dB Digital Step Attenuator PE43620A-Z pSemi 3,000: ¥133.5 Non-Stocked Lead-Time 24 Weeks	Mfr. Part # PE43620A-Z Mouser Part # 81-PE43620A-Z	pSemi	Attenuators 50ohm 2Bit 18.0dB 6.0dB Digital Step Attenuator Learn More about pSemi ultracmos rf dsa	Datasheet	Non-Stocked Lead-Time 24 Weeks	Reel ¥133.5 ¥129.6	Min.: 3,000 Mult.: 3,000 : 3,000			QFN-12	18 dB	3 GHz	50 Ohms	2 bit	1 Channel	6 dB
	Attenuators 75ohm 6Bit 31.5dB 0.5dB Digital Step Attenuator PE43665A-Z pSemi 3,000: ¥249.2 Non-Stocked Lead-Time 24 Weeks	Mfr. Part # PE43665A-Z Mouser Part # 81-PE43665A-Z	pSemi	Attenuators 75ohm 6Bit 31.5dB 0.5dB Digital Step Attenuator Learn More about pSemi ultracmos rf dsa	Datasheet	Non-Stocked Lead-Time 24 Weeks	Reel ¥249.2 ¥242.5	Min.: 3,000 Mult.: 3,000 : 3,000			QFN-20	31.5 dB	2 GHz	75 Ohms	6 bit	1 Channel	0.5 dB