OPA445APG4 Equivalent & Substitute Parts

Part Overview

The OPA445APG4 is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-PDIP through-hole package. This device is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design support and procurement. The OPA445APG4 maintains electrical and mechanical compatibility with successor models within the OPA445 series, enabling direct substitution in applications requiring general-purpose amplification with specified performance characteristics.

Substiute Parts

OPA445APG4

Texas InstrumentsIn Stock: 976OPA445APG4 Datasheet

Current PartRFQ

OPA445AP

Texas InstrumentsIn Stock: 2206OPA445AP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPA445APG4 is determined by strict equivalence across electrical performance parameters and mechanical compatibility. The following criteria establish valid substitution:

Electrical Equivalence Parameters:

• 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 Compatibility Parameters:

• Package / Case: 8-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole
• Supplier Device Package: 8-PDIP

Compliance Parameters:

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

Substitute parts must match all electrical parameters, maintain identical package geometry and mounting characteristics, and satisfy the same regulatory compliance requirements. Product status (active vs. obsolete) does not affect electrical or mechanical substitution validity but indicates procurement availability.

Parameter Comparison

Engineering Selection Recommendations

The OPA445AP is a direct electrical and mechanical equivalent of the OPA445APG4. All specified electrical parameters, including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current capability, and supply voltage range, are identical. Both devices maintain the same 8-DIP through-hole package geometry and mounting characteristics, enabling pin-for-pin substitution without circuit modification.

The primary distinction between these parts is product status: the OPA445APG4 is classified as obsolete, while the OPA445AP is active. This status difference reflects manufacturing lifecycle positioning and procurement availability rather than electrical or mechanical divergence. Both parts satisfy ROHS3 compliance and REACH unaffected status, meeting equivalent regulatory requirements.

The OPA445AP is supplied in tube packaging, whereas the OPA445APG4 packaging specification is not provided. This packaging difference affects handling and storage procedures but does not impact electrical performance or circuit compatibility.

Frequently Asked Questions (FAQ)

Q: Can the OPA445AP directly replace the OPA445APG4 in existing circuit designs?

A: Yes. The OPA445AP is electrically and mechanically equivalent to the OPA445APG4. All electrical parameters are identical, and both devices use the same 8-DIP through-hole package. Direct substitution requires no circuit modifications or PCB redesign.

Q: What is the significance of the product status difference (obsolete vs. active)?

A: Product status indicates manufacturing lifecycle position and procurement availability. The OPA445APG4 is obsolete, meaning Texas Instruments no longer manufactures this specific part number variant. The OPA445AP is active and currently manufactured, ensuring long-term availability for new designs and component replenishment.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both the OPA445APG4 and OPA445AP are ROHS3 compliant and REACH unaffected. They satisfy identical regulatory requirements and may be used interchangeably in applications subject to these compliance standards.

Q: Does the packaging difference (tube vs. unspecified) affect circuit performance?

A: No. Packaging format affects component handling, storage, and assembly procedures but does not influence electrical performance or circuit functionality. Both parts deliver identical electrical characteristics regardless of packaging format.

Q: What parameters must remain constant for valid substitution?

A: Valid substitution requires identical values across all electrical performance parameters: slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current, supply voltage range, and operating temperature range. Package geometry, mounting type, and compliance certifications must also match.

Q: Is the OPA445AP suitable for new design implementations?

A: Yes. The OPA445AP is an active product with current manufacturing support. It is appropriate for new designs requiring general-purpose amplification with the specified electrical characteristics and through-hole package format.