Sonar Front End

Assembly

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Transmit driver and sensitive receive chain that fire 500 W pulses and amplify echoes spanning 120 dB of dynamic range.

Direct parts	8
Total parts	11
Used in	1 assembly
Class	Assembly

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Transmit driver and sensitive receive chain that fire 500 W pulses and amplify echoes spanning 120 dB of dynamic range. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Sonar Front End parts and their functions

8 top-level parts · 11 parts in total · full bill of materials below

Sonar Front End parts diagram: 1 transmit driver & transformer, 2 power MOSFET, 3 Transmit/Receive switch, 4 receive preamplifier, 5 TVG amplifier, 6 sonar ADC, 7 bare PCB, 8 SMD passive (R/C/L). 11 parts in 8 top-level items. — Sonar Front End parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Transmit Driver & Transformer	1×	Step-up transformer stage that drives the piezo stack with swept pulses up to 500 W RMS.
2	Power MOSFET	4×	Transmit H-bridge
3	Transmit/Receive Switch	1×	Diode network that isolates the receiver during the transmit burst and reconnects within microseconds.
4	Receive Preamplifier	1×	Low-noise stage that lifts microvolt echo signals above the noise floor.
5	TVG Amplifier	1×	Time-varied-gain stage that ramps gain with echo delay to equalise returns from near and far depths.
6	Sonar ADC	1×	Converter digitising the conditioned echo signal for matched-filter processing.
7	Bare PCB	1×	Unpopulated printed circuit board: copper traces etched on an FR-4 glass-epoxy laminate that carry current between the components later soldered to it.
8	SMD Passive (R/C/L)	1×	Surface-mount resistors, capacitors, and inductors, typically in 0402 to 1206 packages, that set voltages, filter noise, and time signals on a circuit board.

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Build & assembly graph

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Bill of materials for Sonar Front End

8 top-level lines · 8 rows shown · 11 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Transmit Driver & Transformer	fish-finder-tx-driver	1×	1	·	part
2	Power MOSFET	mosfet	4×	4	·	part
3	Transmit/Receive Switch	fish-finder-tr-switch	1×	1	·	part
4	Receive Preamplifier	fish-finder-rx-preamp	1×	1	·	part
5	TVG Amplifier	fish-finder-tvg-amplifier	1×	1	·	part
6	Sonar ADC	fish-finder-adc	1×	1	·	part
7	Bare PCB	pcb-bare	1×	1	·	part
8	SMD Passive (R/C/L)	smd-passives	1×	1	·	part

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Where the sonar front end is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Marine 1 Fish Finder / Sonar

Used in 1 assembly

Fish Finder / Sonar

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳Foxconn foxconn.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Flex (Singapore) flex.com ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks
🇮🇳Dixon Technologies dixoninfo.com ↗	Noida, IN	Electronics contract mfg	1,000 pcs	6–10 wks
🇨🇳BYD Electronics bydelectronic.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Venture Corp venture.com.sg ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks