Piezoelectric Diaphragms |The sounder Design Guide

Piezoelectric Diaphragms, Siren Diaphragms

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PART NO	Fr(KHz)	Zr(MAX)	Cp(±30%nf)	Dimension (MM)				selected	PDF
				D	d	T	t
FT-20T-6.7B1	6.7 +/-0.5	200	14	20	14.7	0.45	0.16
FT-20T-6.3A1	6.3+/-0.2	200	14	20	15	0.40	0.16		null
MFT-27T-4.0A1	4.0+/-.5	300	25	27	20	0.43	0.21
MFT-27T-3.9A1	3.9+/-0.5KHz	200	25	27	20	0.48	0.20
FT-27T-2.5A1	2.5 +/-0.5	250	45	27	20	0.24	0.12		null
FT-27T-2.5A21	2.5+/-0.3	250	45	27	20	0.22	0.09		null
FT-35T-2.8A1	2.8 +/-0.3	200	24	35	25	0.55	0.30		null
FT-35T-2.8B1	2.8 +/-0.5	200	24	35	25	0.55	0.30		null
FT-35T-3.1A1	3.1 +/- 0.2	200	30	35	25	0.30	0.30		null
MFT-35G-3.4A1	3.4 +/- 0.5	250	32	35	25	0.58	0.32
FT-41T-2.8A1	2.8 +/- 0.2	300	66	41	25	0.25	0.12		null
FT-50T-1.9A1	1.9 +/- 0.5	300	66	50	25	0.23	0.10		null
FT-50T-3.0A1	3.3+/- 0.3	300	35	50	25	0.45	0.22		null
FT-50T-1.1A	1.1 +/- 0.5	800	60	50	30	0.48	0.22
FT-30.5T-1.6A1	1.6+/- 0.5	500	45	30.5	20	0.22	0.10
FT-30.5T-3.0A1	3.0 +/- 0.5	400	22	30.5	20	0.48	0.23
FT-24T-3.0A1	3.0+/- 0.5	200	45	24	20	0.22	0.10
FT-24T-5.6A1	5.6 +/- 0.5	400	22	24	20	0.48	0.23
HFT-50T-3.0A	3.0+/- .3	300	45	50	25	0.43	0.20
FT-41G-3.0A1	3.0 +/- 0.4	500	66	41	25	0.24	0.11		null
FT-27T-4.1B1	4.1 +/- 0.3	200	25	27	20	0.45	0.23		null

What are Piezoelectric Diaphragms？

Piezoelectric Diaphragms consist of piezoelectric ceramic discs that are adhered to metal plates made from brass or nickel alloy. The piezoelectric diaphragm vibrates according to the AC audio signal’s size, frequency, and voltage when the two electrodes are connected.

Established in 1998, DSW International has specialized in marketing and selling horn & siren diaphragms which have been used & tested in Ningbo City Quality Lab many times.

Voice Coil Diaphragm Product Damper Product

PART NO	Power	Inner Dia.	Outer Diameter	Dome High (0.1)	DC. Resistance (ohm)	selected
EH5-1A	5W	25.1	59	7.8	6 OR 7
EH5-4A	5W	25.1	54	7.8	6 OR 7
EH5-4	5W	25.1	54	7.8	3.1 OR 3.5
EH10-1A	10W	37.5	74	10	6.7 OR 7.4
EH12.5-1	12.5W	37.5	74	10	6.7 OR 7.4
EH15-2B	15W	41.8	75	11.5	12 OR 13
EH25-8A	25W	51.3	90	-4.2	6 TO 6.5
EH15-2B	15W	41.8	75	11.5	12 OR 13
EH25-9	25W	51.3	90	-4.2	12.5 OR 13.5
EH25-19B	25W	51.3	90	-4.2	12.5 TO 13.5
EH25-15B	25W	51.3	90	-4.2	12.5 TO 13.5
EHT20-1B	40W	71.4	112	18.8	12.2 TO 12.8
EHC50-1	50W	73.4	114	2	10.5 TO 11
462	20W	46.2	64.7	/	5.8 TO 6.5
EH250-2B	100W	73.4	118	18	10 TO 10.5
EH100-1B	100W	79.8	119	22.4	11.8 TO 12.2
EH100-3B	100W	100.3	142	24.7	12.1 TO 12.7
EHC3-1A	3W	25.1	59	7.8	6 TO 7
EHC10-1A	10W	37.5	74	10	6.7 TO 7.4
EHC15-1B	15W	37.5	64	10	13-13.5
ETH5-1	5W	37.5	64	10	13-13.5
EH5-1C	5W	25	59	7.8	27.5-29.5

PART NO	Power	Inner Dia.	Outer Diameter	Dome High (0.1)	DC. Resistance (ohm)	Diagram	selected
S50	15W	25.5	52.5?.1	6.3	3.4-3.8 6.1-6.7	2-2
S350	15W	25.5	52.5	6.3	3.4-3.8 6.1-6.7	2-2
S108	15W	25.5	57?.1	6.3	3.4-3.8 4.8-4.2 5.95-5.45 7.6-8.4	2-2
S105	15W	18.5	40	4.1	7.6-8.4 11.4-12.6	2-3
S250	15W	25.5	40/42	7.2	3.4-3.8 4.95-5.45 11.4-12.6	2-4
S204	20W	20.4	40/42	5.2	0.8-1.2 1.7-2	2-2
S508	25W	33.5	53.2?.1	10.7	6.1-6.7	2-1
S711	40W	38.5	68	9.9	6.1-6.7	2-1
S400	40W	38.5	67	9.9	6.1-6.7	2-1
S377	40W	37.7	60	9.5	3.4-3.8 6.1-6.7	2-1
S20-1A	20W	25.1	54	7.8	6-7	2-1
S20-1	20W	25.1	54	7.8	3.1-3.5	2-1
S85-1	85W	51.3	90	16	6.3-6.7 11.8-12.5	2-1
S85-2	85W	56.3	96	16.8	6.3-6.7 11.8-12.5	2-1
S85-3	85W	58.5	105	17	6.3-6.7 11.8-12.5	2-2
S100-2	100W	66	105.5	17.2	4.2-4.51 2.5-13	2-2
S100-3	100W	66	108	17.2	5.4-5.8	2-2