OPA445AUG4 Equivalent & Substitute Parts

Part Overview

The OPA445AUG4 is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design requirements and production continuity. The OPA445AUG4 delivers a 2 MHz gain bandwidth product with a 15 V/µs slew rate, suitable for general-purpose amplification applications requiring moderate bandwidth and low input bias current specifications.

Substiute Parts

OPA445AUG4

Texas InstrumentsIn Stock: 1059OPA445AUG4 Datasheet

Current PartRFQ

OPA445AU

Texas InstrumentsIn Stock: 2332OPA445AU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPA445AUG4 is determined by electrical and mechanical parameter equivalence across the following criteria:

Electrical Parameters (Critical for Functional Equivalence):

• Slew Rate: 15 V/µs
• Gain Bandwidth Product: 2 MHz
• Current - Input Bias: 10 pA
• Voltage - Input Offset: 1.5 mV
• Current - Supply: 4.2 mA
• Current - Output / Channel: 15 mA
• Voltage - Supply Span: 20 V to 90 V
• Operating Temperature Range: -25°C to 85°C

Mechanical Parameters (Critical for Physical Compatibility):

• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 3 (168 Hours)

The OPA445AU shares identical electrical and mechanical specifications with the OPA445AUG4, differing only in product status (active versus obsolete) and packaging format (tube versus unspecified). This part qualifies as a direct functional and physical substitute.

Parameter Comparison

Engineering Selection Recommendations

The OPA445AU is the direct substitute for the OPA445AUG4. Both parts are manufactured by Texas Instruments and share identical electrical performance specifications, mechanical package dimensions, and compliance certifications. The primary distinction is product lifecycle status: the OPA445AUG4 is obsolete, while the OPA445AU maintains active production status.

Selection of the OPA445AU for new designs or production continuity is supported by:

• Complete electrical parameter equivalence across all performance metrics
• Identical 8-SOIC surface mount package geometry and pin configuration
• Matching RoHS3 compliance and moisture sensitivity classification
• Active product status ensuring ongoing availability and supply chain continuity

No additional design modifications or circuit re-qualification are required when substituting the OPA445AU for the OPA445AUG4 in existing applications.

Frequently Asked Questions (FAQ)

Q: Can the OPA445AU be used as a direct replacement for the OPA445AUG4 in existing circuit designs?

A: Yes. The OPA445AU is electrically and mechanically identical to the OPA445AUG4. All performance parameters, including slew rate, gain bandwidth product, input bias current, and supply voltage range, are equivalent. The 8-SOIC package footprint and pin configuration are identical, permitting direct substitution without circuit modification.

Q: What is the primary reason for substituting the OPA445AUG4?

A: The OPA445AUG4 is classified as obsolete. The OPA445AU is the active equivalent part, ensuring continued availability from Texas Instruments and supply chain reliability for production and design requirements.

Q: Are there any differences in compliance or environmental specifications between these parts?

A: No. Both parts carry ROHS3 compliance certification and identical Moisture Sensitivity Level 3 (168 Hours) ratings. REACH status is unaffected for both devices.

Q: Does the packaging format difference (tube versus unspecified) affect electrical performance?

A: No. Packaging format pertains to order and delivery configuration only. The electrical and mechanical specifications of the component itself remain unchanged. The 8-SOIC package dimensions and pin assignments are identical regardless of packaging format.

Q: What are the critical parameters that define substitution eligibility for the OPA445AUG4?

A: Substitution eligibility is determined by matching: slew rate (15 V/µs), gain bandwidth product (2 MHz), input bias current (10 pA), input offset voltage (1.5 mV), supply current (4.2 mA), output current (15 mA), supply voltage range (20 V to 90 V), operating temperature range (-25°C to 85°C), and 8-SOIC surface mount package configuration.

Q: Is the OPA445AU available in the same quantity and lead time as the OPA445AUG4?

A: The OPA445AU maintains active production status with higher inventory availability (2283 pieces in stock versus 999 pieces for the obsolete OPA445AUG4). Lead times and availability are subject to current market conditions and supplier inventory levels.