OPA177GSG4 Equivalent & Substitute Parts

Part Overview

The OPA177GSG4 is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device is classified as obsolete, indicating it has been discontinued and is no longer in active production. The OPA177GSG4 delivers a gain bandwidth product of 600 kHz with a slew rate of 0.3 V/µs, making it suitable for general-purpose analog signal processing applications requiring moderate bandwidth and low input offset voltage specifications.

Due to its obsolete status, locating replacement units from original inventory becomes increasingly difficult. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications currently utilizing this component.

Substiute Parts

OPA177GSG4

Texas InstrumentsIn Stock: 708OPA177GSG4 Datasheet

Current PartRFQ

OPA177GS

Texas InstrumentsIn Stock: 30205OPA177GS Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPA177GSG4 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must satisfy the following criteria:

Electrical Parameter Equivalence:

• Identical amplifier type (General Purpose)
• Identical number of circuits (1)
• Identical slew rate (0.3 V/µs)
• Identical gain bandwidth product (600 kHz)
• Identical input bias current (500 pA)
• Identical input offset voltage (20 µV)
• Identical supply current (1.3 mA)
• Identical supply voltage range (6 V to 36 V)
• Identical operating temperature range (-40°C to 85°C)

Mechanical & Packaging Equivalence:

• Identical package type (8-SOIC)
• Identical physical dimensions (0.154", 3.90 mm Width)
• Surface mount mounting type

Compliance Equivalence:

• ROHS3 compliance maintained
• Identical MSL rating (3, 168 Hours)

The OPA177GS meets all substitution criteria and is classified as the manufacturer-recommended equivalent.

Parameter Comparison

Engineering Selection Recommendations

The OPA177GS is the direct substitute for the OPA177GSG4. Both parts share identical electrical specifications, mechanical packaging, and compliance certifications. The primary distinction is product status: the OPA177GSG4 is obsolete, while the OPA177GS maintains active production status.

Selection of the OPA177GS is appropriate for:

• Direct replacement in existing designs currently using OPA177GSG4
• New designs requiring equivalent performance characteristics
• Applications requiring ROHS3 compliance and MSL 3 moisture sensitivity rating
• Circuits operating within the -40°C to 85°C temperature range
• Supply voltage applications between 6 V and 36 V

The OPA177GS is available in active inventory with significantly higher stock levels (30,100 pieces) compared to the obsolete OPA177GSG4 (693 pieces), ensuring supply chain continuity and reduced lead times.

Frequently Asked Questions (FAQ)

Q: Can the OPA177GS be used as a direct replacement for the OPA177GSG4?

A: Yes. The OPA177GS is electrically and mechanically identical to the OPA177GSG4 across all specified parameters. Both devices share the same 8-SOIC package, identical electrical performance characteristics, and equivalent compliance ratings. Direct substitution is supported without circuit modification.

Q: What is the difference between OPA177GSG4 and OPA177GS?

A: The primary difference is product status and packaging format. The OPA177GSG4 is obsolete and supplied in tape format, while the OPA177GS is active production and supplied in tube packaging. All electrical and mechanical specifications are identical.

Q: Are there any compatibility concerns when switching from OPA177GSG4 to OPA177GS?

A: No compatibility concerns exist. Both parts are pin-for-pin compatible, share identical electrical performance, and are housed in the same 8-SOIC package. PCB layout and circuit design require no modification.

Q: Does the OPA177GS meet the same compliance requirements as the OPA177GSG4?

A: Yes. Both parts are ROHS3 compliant and carry identical MSL 3 (168 Hours) moisture sensitivity ratings. Compliance documentation and certifications are equivalent.

Q: What is the supply availability difference between these parts?

A: The OPA177GSG4 has limited inventory (693 pieces) due to obsolete status. The OPA177GS is in active production with substantially higher availability (30,100 pieces), providing improved supply chain reliability and shorter lead times.

Q: Are there any thermal or operating condition differences?

A: No. Both parts operate identically across the -40°C to 85°C temperature range with identical supply current consumption (1.3 mA) and thermal characteristics.