OPA548T-1G3 Equivalent & Substitute Parts

Part Overview

The OPA548T-1G3 is a power amplifier integrated circuit manufactured by Texas Instruments, designed for single-circuit power amplification applications. The device is packaged in a TO-220-7 through-hole configuration and operates across a wide supply voltage range of 8 V to 60 V. This part is currently designated as Last Time Buy, indicating that the manufacturer has discontinued or will discontinue production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications currently utilizing this component.

Substiute Parts

OPA548T-1G3

Texas InstrumentsIn Stock: 52643OPA548T-1G3 Datasheet

Current PartRFQ

OPA548T-1

Texas InstrumentsIn Stock: 3524OPA548T-1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPA548T-1G3 is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters establish the substitution criteria:

Electrical Parameters:

• Amplifier Type: Power
• Number of Circuits: 1
• Slew Rate: 10 V/µs
• Gain Bandwidth Product: 1 MHz
• Current - Input Bias: 100 nA
• Voltage - Input Offset: 2 mV
• Current - Supply: 17 mA
• Current - Output / Channel: 5 A
• Voltage - Supply Span: 8 V to 60 V
• Operating Temperature Range: -40°C to 85°C

Mechanical Parameters:

• Mounting Type: Through Hole
• Package / Case: TO-220-7

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

Substitute parts must match all parameters listed above to ensure functional and physical compatibility within existing circuit designs and PCB layouts.

Parameter Comparison

Engineering Selection Recommendations

The OPA548T-1 is the direct substitute for the OPA548T-1G3. Both parts are manufactured by Texas Instruments and share identical electrical specifications and mechanical packaging. The primary distinction is product status: the OPA548T-1G3 is designated Last Time Buy, while the OPA548T-1 maintains Active status.

For new designs and ongoing production requiring power amplifier functionality with the specified electrical characteristics, the OPA548T-1 is the appropriate selection. This part maintains full compliance with ROHS3 and REACH requirements, ensuring regulatory alignment with current environmental and hazardous substance directives.

The OPA548T-1 is currently available in inventory (3500 Pcs New Original In Stock), providing supply security for immediate and near-term procurement needs.

Frequently Asked Questions (FAQ)

Q: Can the OPA548T-1 be used as a direct replacement for the OPA548T-1G3 in existing designs?

A: Yes. The OPA548T-1 is electrically and mechanically identical to the OPA548T-1G3. All electrical parameters, including slew rate, gain bandwidth product, input bias current, output current capability, and supply voltage range, are equivalent. The TO-220-7 package dimensions and pinout are identical, enabling direct PCB substitution without circuit modification.

Q: What is the significance of the Last Time Buy status on the OPA548T-1G3?

A: Last Time Buy designation indicates that Texas Instruments has announced the discontinuation of the OPA548T-1G3. This status signals that existing inventory will be depleted and no further production runs are planned. Designs currently using this part number should transition to the OPA548T-1 to ensure long-term supply continuity.

Q: Are there any compliance or certification differences between the OPA548T-1G3 and OPA548T-1?

A: No. Both parts carry identical ROHS3 Compliant and REACH Unaffected certifications. There are no differences in environmental compliance or hazardous substance restrictions between the two part numbers.

Q: What are the key parameters that determine substitution eligibility for this power amplifier?

A: Substitution eligibility is determined by equivalence across electrical performance (slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current, and supply voltage range), operating temperature range, and mechanical packaging (TO-220-7 through-hole configuration). All parameters must match exactly for functional compatibility.

Q: Is the TO-220-7 package suitable for high-current applications?

A: The TO-220-7 package is designed for through-hole mounting and supports the specified 5 A output current per channel. Thermal management through appropriate PCB layout and heat sinking is required for sustained high-current operation within the -40°C to 85°C operating temperature range.