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ROHM Semiconductor BH3547F-E2 — Analog & Data Acquisition

BH3547F-E2 Class AB Stereo Headphone Amp, 77mW, 8-SOP

MPNBH3547F-E2
End of Life

ROHM BH3547F- Class AB stereo headphone amplifier, 77mW x 2 @ 16Ω, 4.5V–6.5V supply, mute & thermal protection, surface-mount 8-SOP (8-SOIC 4.40mm width), -25°C to 75°C operating range.

$0.99Ref. price · indicative, final on quote
ROHM Semiconductor BH3547F-E2 datasheet (PDF)
Packaging8-SOIC (0.173", 4.40mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

BH3547F-E2 specifications
ParameterValue
TypeClass AB
Output typeHeadphones, 2-Channel (Stereo)
MountingSurface Mount
Voltage4.5V ~ 6.5V
Max output power x channels @ load77mW x 2 @ 16Ohm
Operating temperature-25°C ~ 75°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
FeaturesMute, Thermal Protection
Case8-SOIC (0.173\", 4.40mm Width)

Product details

Class AB stereo headphone amplifier — 77 mW per channel into 16 Ω

The BH3547F-E2: The BH3547F-: The ROHM BH3547F- is a Class AB stereo headphone amplifier delivering 77 mW per channel into a 16 Ω load, housed in an 8-SOP (8-SOIC, 4.40 mm width) package. Integrated mute and thermal protection reduce external component count and guard against over-temperature faults during continuous playback.

Output power and headphone drive — what 77 mW means

The 77 mW per channel into 16 Ω is the headline rating that determines headphone compatibility. For 32 Ω headphones, output power roughly halves to about 38 mW per channel — still sufficient for most consumer headsets to reach comfortable listening levels without clipping. The 4.5 V to 6.5 V supply range means the amplifier can run from a single 5 V rail with margin for regulation droop, but the -25°C to 75°C temperature grade limits deployment to indoor consumer or commercial equipment; it is not rated for automotive cabin or industrial environments.

The part is ROHS3 compliant.

Frequently asked questions

What is the output power of BH3547F-?

The BH3547F- delivers 77 mW per channel into a 16 Ω load (stereo). Into 32 Ω headphones, expect roughly 38 mW per channel — adequate for most consumer headsets.

Can BH3547F- drive 32 ohm headphones?

Yes, it can drive 32 Ω headphones. The output power into 32 Ω is approximately 38 mW per channel, which is sufficient for typical listening levels in portable audio applications.

What is a replacement for BH3547F-?

A close functional peer is the BH3548F-, also a Class AB stereo headphone amplifier from ROHM. The BH3548F- delivers 62 mW per channel into 16 Ω (vs 77 mW for the BH3547F-) and adds a depop feature and shutdown, but its supply range is 4.0 V to 5.5 V. Check pin compatibility for your layout before substituting.

Is BH3547F- RoHS compliant?

Yes, the BH3547F- is ROHS3 compliant per the manufacturer's status.