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BF Series Speakers & Transducers

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Type	Impedance	Shape	Diameter	Length
Speakers & Transducers Plug 2.08 dia. 2200 Res, Red BF-1921-000 Knowles 1: $2.52 3,954In Stock	Mfr. Part No. BF-1921-000 Mouser Part No 721-BF-1921-000	Knowles	Speakers & Transducers Plug 2.08 dia. 2200 Res, Red	Datasheet	3,954In Stock	$2.52 $1.92 $1.73 $1.60 View $1.47 $1.31 $1.21 $1.13 $1.04	Min.: 1 Mult.: 1	Dampers	Acoustic	2.2 kOhms	Round	2.08 mm	2.44 mm
Speakers & Transducers 1.78DIA X 1.65MM SCREEN 1500 RES BF-3038-000 Knowles 1: $3.29 99In Stock	Mfr. Part No. BF-3038-000 Mouser Part No 721-BF-3038-000	Knowles	Speakers & Transducers 1.78DIA X 1.65MM SCREEN 1500 RES	Datasheet	99In Stock	$3.29 $2.39 $2.12 $1.96 View $1.65 $1.63 $1.48 $1.44	Min.: 1 Mult.: 1	Dampers	Acoustic	1.5 kOhms	Round	1.78 mm	1.65 mm
Speakers & Transducers 1.12DIA X 1.410MM SCREEN 4700 RES BF-3163-000 Knowles 1: $3.29 865In Stock 99On Order	Mfr. Part No. BF-3163-000 Mouser Part No 721-BF-3163-000	Knowles	Speakers & Transducers 1.12DIA X 1.410MM SCREEN 4700 RES	Datasheet	865In Stock 99On Order	$3.29 $2.39 $2.12 $1.96 View $1.65 $1.63 $1.48 $1.44	Min.: 1 Mult.: 1	Dampers	Acoustic	4.7 kOhms	Round	1.12 mm	1.41 mm
Speakers & Transducers 1.37DIA X 1.57MM SCREEN 1500 RES BF-3039-000 Knowles 1: $3.29 77In Stock	Mfr. Part No. BF-3039-000 Mouser Part No 721-BF-3039-000	Knowles	Speakers & Transducers 1.37DIA X 1.57MM SCREEN 1500 RES	Datasheet	77In Stock	$3.29 $2.39 $2.12 $1.96 View $1.65 $1.63 $1.48 $1.44	Min.: 1 Mult.: 1	Dampers	Acoustic	1.5 kOhms	Round	1.37 mm	1.57 mm
Speakers & Transducers 1.78DIA X 1.65MM SCREEN 680 RES BF-1997-000 Knowles 1: $2.99 75In Stock	Mfr. Part No. BF-1997-000 Mouser Part No 721-BF-1997-000	Knowles	Speakers & Transducers 1.78DIA X 1.65MM SCREEN 680 RES	Datasheet	75In Stock	$2.99 $2.17 $1.93 $1.85 View $1.57 $1.48 $1.35 $1.26 $1.22	Min.: 1 Mult.: 1	Dampers	Acoustic	680 Ohms	Round	1.78 mm	1.65 mm
Speakers & Transducers 1.78DIA X 1.65MM SCREEN 2200 RES BF-3037-000 Knowles 1: $3.29 470In Stock	Mfr. Part No. BF-3037-000 Mouser Part No 721-BF-3037-000	Knowles	Speakers & Transducers 1.78DIA X 1.65MM SCREEN 2200 RES	Datasheet	470In Stock	$3.29 $2.39 $2.12 $1.96 View $1.65 $1.63 $1.48 $1.44	Min.: 1 Mult.: 1	Dampers	Acoustic	2.2 kOhms	Round	1.78 mm	1.65 mm
Speakers & Transducers 1.78DIA X 1.65MM SCREEN 1000 RES BF-3035-000 Knowles 1: $3.29 84In Stock	Mfr. Part No. BF-3035-000 Mouser Part No 721-BF-3035-000	Knowles	Speakers & Transducers 1.78DIA X 1.65MM SCREEN 1000 RES	Datasheet	84In Stock	$3.29 $2.39 $2.12 $1.96 View $1.65 $1.63 $1.48 $1.44	Min.: 1 Mult.: 1	Dampers	Acoustic	1 kOhms	Round	1.78 mm	1.65 mm
Speakers & Transducers 1.12DIA X 1.410MM SCREEN 1500 RES BF-1991-000 Knowles 1: $2.99 10In Stock	Mfr. Part No. BF-1991-000 Mouser Part No 721-BF-1991-000	Knowles	Speakers & Transducers 1.12DIA X 1.410MM SCREEN 1500 RES	Datasheet	10In Stock	$2.99 $2.17 $1.93 $1.85 View $1.57 $1.48 $1.35 $1.26 $1.22	Min.: 1 Mult.: 1	Dampers	Acoustic	1.5 kOhms	Round	1.12 mm	1.41 mm
Speakers & Transducers 1.78DIA X 1.65MM SCREEN 330 RES BF-3034-000 Knowles 1: $3.29 69In Stock	Mfr. Part No. BF-3034-000 Mouser Part No 721-BF-3034-000	Knowles	Speakers & Transducers 1.78DIA X 1.65MM SCREEN 330 RES	Datasheet	69In Stock	$3.29 $2.39 $2.12 $1.96 View $1.65 $1.63 $1.48 $1.38 $1.29	Min.: 1 Mult.: 1	Dampers	Acoustic	330 Ohms		1.78 mm	1.65 mm
Speakers & Transducers Plug 2.08 dia. 680 Res, White BF-1859-000 Knowles 1: $2.44 6,609In Stock 5,000Expected 07/12/2026	Mfr. Part No. BF-1859-000 Mouser Part No 721-BF-1859-000	Knowles	Speakers & Transducers Plug 2.08 dia. 680 Res, White	Datasheet	6,609In Stock 5,000Expected 07/12/2026	$2.44 $1.87 $1.69 $1.57 View $1.44 $1.28 $1.22 $1.13 $1.04	Min.: 1 Mult.: 1	Dampers	Acoustic	680 Ohms	Round	2.08 mm	2.44 mm
Speakers & Transducers 1.12DIA X 1.410MM SCREEN 680 RES BF-1988-000 Knowles 1: $2.73 1,676In Stock 1,000Expected 11/12/2026	Mfr. Part No. BF-1988-000 Mouser Part No 721-BF-1988-000	Knowles	Speakers & Transducers 1.12DIA X 1.410MM SCREEN 680 RES	Datasheet	1,676In Stock 1,000Expected 11/12/2026	$2.73 $2.09 $1.89 $1.75 View $1.61 $1.44 $1.36 $1.27 $1.17	Min.: 1 Mult.: 1	Dampers	Acoustic	680 Ohms	Round	1.12 mm	1.41 mm
Speakers & Transducers Plug 2.08 dia. 1500 Res, Green BF-1861-000 Knowles 1: $2.44 450In Stock	Mfr. Part No. BF-1861-000 Mouser Part No 721-BF-1861-000	Knowles	Speakers & Transducers Plug 2.08 dia. 1500 Res, Green	Datasheet	450In Stock	$2.44 $1.87 $1.69 $1.57 View $1.44 $1.28 $1.22 $1.13 $1.04	Min.: 1 Mult.: 1	Dampers	Acoustic	1.5 kOhms	Round	2.08 mm	2.44 mm
Speakers & Transducers Plug 2.08 dia. 3300 Res, Orange BF-1922-000 Knowles 1: $2.66 370In Stock	Mfr. Part No. BF-1922-000 Mouser Part No 721-BF-1922-000	Knowles	Speakers & Transducers Plug 2.08 dia. 3300 Res, Orange	Datasheet	370In Stock	$2.66 $2.01 $1.82 $1.66 View $1.54 $1.36 $1.26 $1.17 $1.09	Min.: 1 Mult.: 1	Dampers	Acoustic	3.3 kOhms	Round	2.08 mm	2.44 mm
Speakers & Transducers Plug 2.08 dia. 4700 Res, Yellow BF-1923-000 Knowles 1: $2.44 190In Stock 600On Order	Mfr. Part No. BF-1923-000 Mouser Part No 721-BF-1923-000	Knowles	Speakers & Transducers Plug 2.08 dia. 4700 Res, Yellow	Datasheet	190In Stock 600On Order On Order Ship Dates Mfr. No: BF-1923-000 Stock: 190 Can Dispatch Immediately On Order: 100 Pending 500 Expected 11/12/2026 Factory Lead Time: 12 Weeks	$2.44 $1.87 $1.69 $1.57 View $1.44 $1.28 $1.22 $1.13 $1.04	Min.: 1 Mult.: 1	Dampers	Acoustic	4.7 kOhms	Round	2.08 mm	2.44 mm
Speakers & Transducers 1.12DIA X 1.410MM SCREEN 2200 RES BF-1995-000 Knowles 1: $2.98 190In Stock	Mfr. Part No. BF-1995-000 Mouser Part No 721-BF-1995-000	Knowles	Speakers & Transducers 1.12DIA X 1.410MM SCREEN 2200 RES	Datasheet	190In Stock	$2.98 $2.21 $1.98 $1.86 View $1.66 $1.51 $1.41 $1.31 $1.23	Min.: 1 Mult.: 1	Dampers	Acoustic	2.2 kOhms	Round	1.12 mm	1.41 mm
Speakers & Transducers Plug 2.08 dia. 330 Res, Grey BF-1999-000 Knowles 1: $2.52 500In Stock	Mfr. Part No. BF-1999-000 Mouser Part No 721-BF-1999-000	Knowles	Speakers & Transducers Plug 2.08 dia. 330 Res, Grey	Datasheet	500In Stock	$2.52 $1.92 $1.73 $1.60 View $1.47 $1.31 $1.28 $1.12 $1.04	Min.: 1 Mult.: 1	Dampers	Acoustic	330 Ohms	Round	2.08 mm	2.44 mm
Speakers & Transducers 1.78DIA X 1.65MM SCREEN 3300 RES BF-3036-000 Knowles 1: $3.29 200Expected 20/11/2026	Mfr. Part No. BF-3036-000 Mouser Part No 721-BF-3036-000	Knowles	Speakers & Transducers 1.78DIA X 1.65MM SCREEN 3300 RES	Datasheet	200Expected 20/11/2026	$3.29 $2.39 $2.12 $1.96 View $1.65 $1.63 $1.48 $1.44	Min.: 1 Mult.: 1	Dampers	Acoustic	3.3 kOhms	Round	1.78 mm	1.65 mm
Speakers & Transducers 2.08DIA X 2.44MM PLUG, 1000 RES BF-1860-000 Knowles 1: $2.74 N/A	Mfr. Part No. BF-1860-000 Mouser Part No 721-BF-1860-000	Knowles	Speakers & Transducers 2.08DIA X 2.44MM PLUG, 1000 RES	Datasheet	N/A	$2.74 $2.07 $1.87 $1.71 View $1.58 $1.40 $1.30 $1.21 $1.13	Min.: 1 Mult.: 1	Dampers	Acoustic	1 kOhms	Round	2.08 mm	2.44 mm
Speakers & Transducers EMC Knowles BF-9778-000 BF-9778-000 Knowles 1: $2.41 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. BF-9778-000 Mouser Part No 721-BF9778000	Knowles	Speakers & Transducers EMC	Datasheet	Non-Stocked Lead-Time 12 Weeks	$2.41 $1.87 $1.65 $1.59 View $1.35 $1.22 $1.11 $1.04 $1.00	Min.: 1 Mult.: 1	Dampers	Acoustic	2.2 kOhms	Round	1.37 mm	1.57 mm

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