OPA37GUG4 Equivalent & Substitute Parts

Part Overview

The OPA37GUG4 is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device is designed for linear amplification applications requiring moderate bandwidth and low input offset voltage. The OPA37GUG4 is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent substitute components for ongoing design support and procurement continuity.

Substiute Parts

OPA37GUG4

Texas InstrumentsIn Stock: 1101OPA37GUG4 Datasheet

Current PartRFQ

OPA37GU

Texas InstrumentsIn Stock: 1261OPA37GU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPA37GUG4 is determined by strict equivalence across the following critical parameters:

Electrical Performance Criteria:

• Slew Rate: 11.9 V/µs
• Gain Bandwidth Product: 63 MHz
• Input Bias Current: 15 nA
• Input Offset Voltage: 25 µV
• Supply Current: 3.3 mA
• Supply Voltage Range: 8 V to 44 V
• Operating Temperature: -40°C to 85°C

Physical & Packaging Criteria:

• Package Type: 8-SOIC surface mount
• Package Dimensions: 0.154" width (3.90 mm)

Compliance & Environmental Criteria:

• RoHS3 Compliance
• Moisture Sensitivity Level: 3
• REACH Status: REACH Unaffected

The OPA37GU meets all electrical and physical requirements for direct substitution. The primary distinction is product status and packaging format (tube vs. discontinued specification).

Parameter Comparison

Engineering Selection Recommendations

The OPA37GU is the direct functional equivalent of the OPA37GUG4 for all electrical and mechanical applications. Selection criteria are based on the following factors:

Product Status: The OPA37GUG4 is discontinued at DiGi Electronics, while the OPA37GU maintains active product status with Texas Instruments. This ensures ongoing availability and manufacturer support for the OPA37GU.

Compliance & Certification: Both parts maintain identical RoHS3 compliance, REACH unaffected status, and moisture sensitivity ratings. No additional qualification is required from a regulatory or environmental standpoint.

Electrical Equivalence: All specified electrical parameters—slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and supply voltage range—are identical between the two parts. The OPA37GU additionally specifies output current per channel at 25 mA, providing explicit confirmation of output drive capability.

Physical Compatibility: Both parts utilize the 8-SOIC surface mount package with identical dimensions (0.154" width, 3.90 mm). PCB layout and thermal management considerations remain unchanged.

Packaging Consideration: The OPA37GU is supplied in tube packaging format, which is standard for active production components. This does not affect electrical performance or board-level integration.

Frequently Asked Questions (FAQ)

Q: Can the OPA37GU be used as a direct replacement for the OPA37GUG4 in existing designs?

A: Yes. The OPA37GU is electrically and mechanically equivalent to the OPA37GUG4. All electrical parameters, package dimensions, and compliance certifications are identical. No circuit redesign or PCB modification is required.

Q: What is the difference between OPA37GUG4 and OPA37GU?

A: The primary difference is product status and packaging format. The OPA37GUG4 is discontinued at DiGi Electronics, while the OPA37GU is an active product supplied in tube packaging. Electrical specifications and physical package dimensions are identical.

Q: Are there any thermal or reliability differences between these parts?

A: No. Both parts share identical operating temperature ranges (-40°C to 85°C), moisture sensitivity levels (MSL 3), and RoHS3 compliance. Thermal performance and long-term reliability characteristics are equivalent.

Q: Does the tube packaging of the OPA37GU affect performance compared to the OPA37GUG4?

A: No. Packaging format (tube vs. other formats) does not affect electrical performance, thermal characteristics, or reliability. The tube format is standard for active production components and is suitable for automated assembly processes.

Q: What is the output current capability of these amplifiers?

A: The OPA37GU specifies an output current per channel of 25 mA. This parameter was not explicitly stated for the OPA37GUG4 in the provided specifications, but both parts are from the same OPA37 base product family and share identical electrical performance characteristics.

Q: Are both parts RoHS compliant?

A: Yes. Both the OPA37GUG4 and OPA37GU are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: Can I use the OPA37GU in high-temperature applications?

A: Both parts are rated for operation from -40°C to 85°C. For applications requiring extended temperature ranges, alternative qualified components outside this family should be evaluated.