OPA549TG3 Equivalent & Substitute Parts

Part Overview

The OPA549TG3 is a power amplifier integrated circuit manufactured by Texas Instruments, designed for single-circuit power amplification applications. The device is packaged in TO-220-11 (Formed Leads) configuration and is rated for output currents up to 10 A per channel. The OPA549TG3 is classified as an obsolete product, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical performance specifications and mechanical compatibility to ensure direct replacement capability.

Substiute Parts

OPA549TG3

Texas InstrumentsIn Stock: 1265OPA549TG3 Datasheet

Current PartRFQ

OPA549T

Texas InstrumentsIn Stock: 2756OPA549T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPA549TG3 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part OPA549T is qualified as a direct equivalent based on the following criteria:

Electrical Parameter Equivalence:

• Slew Rate: 9 V/µs (identical)
• Gain Bandwidth Product: 900 kHz (identical)
• Current - Input Bias: 100 nA (identical)
• Voltage - Input Offset: 1 mV (identical)
• Current - Supply: 26 mA (identical)
• Current - Output / Channel: 10 A (identical)
• Voltage - Supply Span: 8 V to 60 V (identical)
• Operating Temperature Range: -40°C to 85°C (identical)

Mechanical Parameter Equivalence:

• Package / Case: TO-220-11 (Formed Leads) (identical)
• Mounting Type: Through Hole (identical)

Functional Equivalence:

• Amplifier Type: Power (identical)
• Number of Circuits: 1 (identical)
• Category: Linear, Amplifiers (identical)

The OPA549T differs from the OPA549TG3 only in product status (Active versus Obsolete), making it suitable for direct substitution in all applications where the OPA549TG3 was previously specified.

Parameter Comparison

Engineering Selection Recommendations

The OPA549T is the direct substitute for the OPA549TG3. Selection of the OPA549T is based on the following engineering criteria:

Product Status Consideration: The OPA549TG3 is classified as obsolete, while the OPA549T maintains active product status. This distinction is significant for long-term supply chain reliability and technical support availability. The OPA549T is the manufacturer-recommended equivalent for applications previously designed with the OPA549TG3.

Compliance and Certification Equivalence: Both parts maintain identical RoHS3 compliance and REACH unaffected status, ensuring regulatory compatibility in all markets and applications. No additional compliance verification is required when substituting the OPA549T for the OPA549TG3.

Electrical and Mechanical Compatibility: Complete parameter equivalence across all specified electrical characteristics (slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current, supply voltage range, and operating temperature) and mechanical specifications (TO-220-11 package, through-hole mounting) confirms direct substitution capability without circuit redesign or board layout modification.

Supply Chain Availability: The OPA549T demonstrates higher inventory availability (2704 pieces in stock) compared to the OPA549TG3 (1165 pieces in stock), supporting sustained production and procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can the OPA549T be used as a direct replacement for the OPA549TG3 without circuit modifications?

A: Yes. The OPA549T is electrically and mechanically equivalent to the OPA549TG3 across all specified parameters. No circuit modifications, board layout changes, or design alterations are required for substitution.

Q: What is the primary difference between the OPA549TG3 and OPA549T?

A: The OPA549TG3 is classified as an obsolete product, while the OPA549T maintains active product status. All electrical performance specifications and mechanical characteristics are identical.

Q: Are the TO-220-11 packages of both parts physically compatible?

A: Yes. Both the OPA549TG3 and OPA549T use the TO-220-11 (Formed Leads) package with through-hole mounting. Pin configuration, lead spacing, and thermal characteristics are identical, enabling direct socket compatibility.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the OPA549TG3 and OPA549T are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements for all markets and applications.

Q: What is the maximum output current rating for both parts?

A: Both parts are rated for 10 A output current per channel, supporting identical load requirements and thermal design considerations.

Q: What is the operating temperature range for both parts?

A: Both parts operate across the temperature range of -40°C to 85°C, providing identical thermal performance specifications for industrial and commercial applications.

Q: Are there any supply voltage differences between the two parts?

A: No. Both parts accept supply voltages from 8 V to 60 V, enabling identical power supply design and application flexibility.

Q: Which part should be selected for new designs?

A: The OPA549T should be selected for new designs due to its active product status, ensuring long-term availability, technical support, and supply chain continuity.