LM4860M Equivalent & Substitute Parts

Part Overview

The LM4860M is a Class AB audio power amplifier integrated circuit manufactured by Texas Instruments, designed for mono audio applications. This 16-SOIC surface mount device delivers 1.15W output power at 8Ω load impedance with integrated shutdown and thermal protection features. The part operates across a 2.7V to 5.5V supply voltage range and is classified as Active product status with full RoHS3 compliance. Substitute parts are identified when equivalent electrical performance, package compatibility, and operational specifications align with the original design requirements.

Substiute Parts

LM4860M

Texas InstrumentsIn Stock: 4452LM4860M Datasheet

Current PartRFQ

LM4860M/NOPB

Texas InstrumentsIn Stock: 1651LM4860M/NOPB Datasheet

DirectRFQ

TPA4860DR

Texas InstrumentsIn Stock: 9163TPA4860DR Datasheet

MFR RecommendedRFQ

TPA4860D

Texas InstrumentsIn Stock: 1411TPA4860D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM4860M are identified based on strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Amplifier category and topology (Linear, Class AB)
• Output configuration (1-Channel Mono)
• Package type (16-SOIC with 0.154" width, 3.90mm)
• Supply voltage compatibility (2.7V ~ 5.5V range)
• Surface mount mounting type
• RoHS3 compliance and MSL rating

Acceptable Variation Parameters:

• Output power within the 1.1W to 1.15W range at 8Ω load
• Operating temperature range extensions (lower minimum acceptable)
• Enhanced protection features (additional mute and short-circuit protection)
• Packaging format (Tube, Bulk, or Tape & Reel) for the same device

The substitute parts LM4860M/NOPB, TPA4860D, and TPA4860DR maintain electrical equivalence through identical supply voltage specifications, package geometry, and mono Class AB amplifier architecture.

Parameter Comparison

Engineering Selection Recommendations

LM4860M/NOPB: This part is a direct equivalent of the LM4860M, differentiated only by packaging format (Bulk versus Tube). Both are manufactured by Texas Instruments with identical Active product status and full RoHS3 compliance. Selection between these two is determined by procurement and assembly requirements rather than electrical performance.

TPA4860D and TPA4860DR: These parts represent functionally equivalent alternatives with enhanced protection architecture. Both devices maintain the identical 16-SOIC package geometry, 2.7V to 5.5V supply voltage specification, and mono Class AB amplifier topology. The TPA4860 series incorporates additional mute and short-circuit protection features beyond the thermal protection and shutdown present in the LM4860M. Operating temperature range extends to -40°C minimum, providing broader environmental coverage. Output power specification of 1.1W at 8Ω remains within acceptable substitution parameters relative to the 1.15W rating of the LM4860M. Both TPA4860D (Tube) and TPA4860DR (Tape & Reel) maintain ROHS3 compliance and MSL 1 rating.

All substitute parts are Active status products from Texas Instruments with confirmed inventory availability and full regulatory compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can LM4860M/NOPB be used as a direct replacement for LM4860M?

A: Yes. Both parts are electrically and mechanically identical. The designation difference reflects packaging format only: LM4860M ships in Tube packaging, while LM4860M/NOPB ships in Bulk packaging. Circuit performance and pin configuration are equivalent.

Q: What is the difference between LM4860M and TPA4860D?

A: Both are Class AB mono amplifiers in 16-SOIC packages with 2.7V to 5.5V supply voltage compatibility. The TPA4860D provides enhanced protection features including mute and short-circuit protection in addition to thermal protection and shutdown. Output power is specified as 1.1W at 8Ω for TPA4860D versus 1.15W for LM4860M. Operating temperature range extends to -40°C minimum on the TPA4860D compared to -20°C on the LM4860M.

Q: Is TPA4860DR suitable for automated assembly processes?

A: Yes. TPA4860DR is supplied in Tape & Reel (TR) format, which is standard for automated pick-and-place assembly equipment. The 16-SOIC package geometry and surface mount configuration are compatible with standard SMT assembly processes.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. LM4860M, LM4860M/NOPB, TPA4860D, and TPA4860DR are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Can I substitute TPA4860D for LM4860M in an existing design?

A: Electrical substitution is valid based on matching supply voltage range, package type, and mono Class AB amplifier architecture. The 0.05W reduction in specified output power (1.1W versus 1.15W) and extended operating temperature range are design considerations. Pin-level compatibility must be verified against the specific circuit schematic.

Q: What inventory status should I consider for procurement?

A: LM4860M has 4392 units in stock, LM4860M/NOPB has 1568 units, TPA4860D has 1400 units, and TPA4860DR has 9066 units available. Procurement decisions should account for lead time requirements and packaging format needs for assembly operations.