SC33178DR2G Equivalent & Substitute Parts

Part Overview

The SC33178DR2G is a general-purpose operational amplifier manufactured by onsemi, featuring dual circuits in an 8-SOIC surface mount package. This device is classified as obsolete and is no longer in active production. The SC33178DR2G was designed for low-power, low-noise analog signal conditioning applications requiring dual operational amplifier functionality.

Due to its obsolete status, locating new inventory of the SC33178DR2G presents supply chain challenges. Identifying equivalent substitute parts with matching electrical and mechanical specifications is essential for design continuity and system reliability in applications currently utilizing this component.

Substiute Parts

SC33178DR2G

onsemiIn Stock: 1107SC33178DR2G Datasheet

Current PartRFQ

MC33178DR2G

onsemiIn Stock: 72710MC33178DR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SC33178DR2G is determined by strict equivalence across all electrical performance parameters and mechanical packaging specifications. The substitute part must satisfy the following criteria:

Electrical Parameter Equivalence:

• Dual operational amplifier configuration (2 circuits)
• Slew rate of 2 V/µs
• Gain bandwidth product of 5 MHz
• Input bias current of 100 nA
• Input offset voltage of 150 µV
• Supply current of 1.7 mA per channel
• Output current capability of 100 mA per channel
• Supply voltage range from 4 V to 36 V
• Operating temperature range of -40°C to 85°C

Mechanical & Packaging Equivalence:

• 8-SOIC surface mount package with 0.154" (3.90 mm) width
• Identical pin configuration and footprint

Compliance & Certification Equivalence:

• ROHS3 compliance
• Moisture sensitivity level 1 (unlimited)

The MC33178DR2G meets all specified criteria and is identified as the manufacturer-recommended substitute for the obsolete SC33178DR2G.

Parameter Comparison

Engineering Selection Recommendations

The MC33178DR2G is the direct equivalent substitute for the SC33178DR2G. Both devices are manufactured by onsemi and share identical electrical specifications and mechanical packaging.

Selection Basis:

The MC33178DR2G is recommended for the following reasons:

1. Complete Electrical Equivalence: All performance parameters match exactly, including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current, and supply voltage range.

2. Identical Packaging: Both parts use the 8-SOIC surface mount package with matching pin configuration and footprint dimensions, enabling direct board-level substitution without layout modifications.

3. Active Product Status: The MC33178DR2G is in active production with established supply chain availability, eliminating obsolescence risk associated with the SC33178DR2G.

4. Compliance Alignment: The MC33178DR2G maintains ROHS3 compliance and moisture sensitivity level 1 (unlimited), ensuring regulatory and environmental compatibility with the original design.

5. Manufacturer Designation: onsemi identifies the MC33178DR2G as the manufacturer-recommended substitute for the SC33178DR2G, confirming functional and operational equivalence.

Frequently Asked Questions (FAQ)

Q: Can the MC33178DR2G be used as a direct replacement for the SC33178DR2G without circuit modifications?

A: Yes. The MC33178DR2G is electrically and mechanically equivalent to the SC33178DR2G. All electrical parameters are identical, and the 8-SOIC package footprint is the same. Direct substitution is possible without circuit design changes.

Q: Are there any differences in supply voltage requirements between the SC33178DR2G and MC33178DR2G?

A: No. Both devices operate across the same supply voltage range of 4 V to 36 V. Supply circuit design remains unchanged.

Q: Do both parts have the same operating temperature range?

A: Yes. Both the SC33178DR2G and MC33178DR2G operate across the temperature range of -40°C to 85°C (TA).

Q: What is the significance of the SC33178DR2G being obsolete?

A: The obsolete status indicates that the SC33178DR2G is no longer manufactured by onsemi. New inventory is limited, and long-term supply cannot be guaranteed. The MC33178DR2G, being in active production, provides reliable long-term availability.

Q: Are the input bias current and input offset voltage specifications identical?

A: Yes. Both devices have an input bias current of 100 nA and an input offset voltage of 150 µV.

Q: Can the MC33178DR2G handle the same output current as the SC33178DR2G?

A: Yes. Both devices provide 100 mA output current per channel.

Q: Are there any packaging format differences between the two parts?

A: No. Both parts are supplied in 8-SOIC surface mount packages with identical dimensions (0.154" or 3.90 mm width). Printed circuit board footprints are identical.

Q: Do both parts meet the same environmental and compliance standards?

A: Yes. Both the SC33178DR2G and MC33178DR2G are ROHS3 compliant with moisture sensitivity level 1 (unlimited).

Q: What is the gain bandwidth product for both devices?

A: Both devices have a gain bandwidth product of 5 MHz.

Q: Is the slew rate the same for both parts?

A: Yes. Both the SC33178DR2G and MC33178DR2G have a slew rate of 2 V/µs.