OPA336UG4 Equivalent & Substitute Parts

Part Overview

The OPA336UG4 is a general-purpose operational amplifier manufactured by Texas Instruments, featuring rail-to-rail output capability in an 8-SOIC surface mount package. This device is classified as a MicroAmplifier™ series component and is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives. The OPA336UG4 serves applications requiring low-power, general-purpose amplification with rail-to-rail output characteristics across a 2.3V to 5.5V supply range.

Substiute Parts

OPA336UG4

Texas InstrumentsIn Stock: 844OPA336UG4 Datasheet

Current PartRFQ

OPA336U

Texas InstrumentsIn Stock: 1390OPA336U Datasheet

MFR RecommendedRFQ

MCP608-I/SN

Microchip TechnologyIn Stock: 9216MCP608-I/SN Datasheet

MFR RecommendedRFQ

MCP631-E/SN

Microchip TechnologyIn Stock: 2217MCP631-E/SN Datasheet

MFR RecommendedRFQ

RE46C311S8F

Microchip TechnologyIn Stock: 2876RE46C311S8F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPA336UG4 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Package / Case: 8-SOIC (0.154", 3.90mm Width) — mandatory for mechanical compatibility
• Mounting Type: Surface Mount — required for PCB assembly compatibility
• Output Type: Rail-to-Rail — functional requirement for the application
• Amplifier Type: General Purpose — functional classification
• Number of Circuits: 1 — circuit count requirement

Secondary Compatibility Parameters:

• Voltage - Supply Span (Min): must be ≤ 2.3V
• Voltage - Supply Span (Max): must be ≥ 5.5V
• Operating Temperature: must encompass -40°C to 85°C range
• RoHS Status: ROHS3 Compliant — regulatory requirement

The substitute parts listed below meet all primary criteria and maintain compatibility within the specified electrical operating ranges. Variations in secondary parameters (slew rate, gain bandwidth product, input offset voltage, supply current) are acceptable provided the device operates within the defined supply voltage and temperature boundaries.

Parameter Comparison

Engineering Selection Recommendations

OPA336U (Texas Instruments)

The OPA336U is the direct functional equivalent of the OPA336UG4, sharing identical electrical specifications and operating parameters. This device maintains the same slew rate (0.03V/µs), gain bandwidth product (100 kHz), input offset voltage (60 µV), and supply current (20µA). The OPA336U is currently active in production and available in tube packaging. This substitute provides seamless compatibility for applications previously designed around the OPA336UG4, with no circuit redesign required. The device maintains ROHS3 compliance and operates across the identical -40°C to 85°C temperature range.

MCP608-I/SN (Microchip Technology)

The MCP608-I/SN is an active general-purpose amplifier offering enhanced performance characteristics within compatible supply voltage and temperature ranges. This device features a higher slew rate (0.08V/µs) and increased gain bandwidth product (155 kHz) compared to the OPA336UG4, with marginally higher input offset voltage (250 µV). The MCP608-I/SN operates across a 2.5V to 6V supply range and maintains the -40°C to 85°C operating temperature specification. This substitute is suitable for applications where improved frequency response is beneficial. The device carries ROHS3 compliance and MSL 1 rating.

MCP631-E/SN (Microchip Technology)

The MCP631-E/SN is an active general-purpose amplifier designed for applications requiring significantly higher bandwidth and slew rate performance. This device features a slew rate of 10V/µs and gain bandwidth product of 24 MHz, substantially exceeding the OPA336UG4 specifications. The MCP631-E/SN operates across a 2.5V to 5.5V supply range and extends the operating temperature to -40°C to 125°C. This substitute is appropriate for high-speed signal processing applications where the OPA336UG4's bandwidth limitations are restrictive. The device carries ROHS3 compliance and MSL 1 rating.

RE46C311S8F (Microchip Technology)

The RE46C311S8F is an active general-purpose amplifier optimized for ultra-low power consumption applications. This device features an exceptionally low supply current of 600nA and operates across a 1.8V to 5.5V supply range, enabling operation at lower supply voltages than the OPA336UG4. However, the RE46C311S8F operates within a restricted temperature range of -10°C to 60°C, which does not encompass the full -40°C to 85°C specification of the OPA336UG4. This substitute is suitable only for applications operating within the -10°C to 60°C temperature window. The device carries ROHS3 compliance and MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can the OPA336U directly replace the OPA336UG4 without circuit modification?

A: Yes. The OPA336U is electrically and mechanically identical to the OPA336UG4. Both devices share the same 8-SOIC package, identical electrical specifications, and operating parameters. No circuit redesign is required for direct substitution.

Q: What is the primary difference between the OPA336UG4 and MCP608-I/SN?

A: The primary differences are manufacturer (Texas Instruments vs. Microchip Technology) and performance characteristics. The MCP608-I/SN offers higher slew rate (0.08V/µs vs. 0.03V/µs) and greater gain bandwidth product (155 kHz vs. 100 kHz). Both devices maintain rail-to-rail output and operate within compatible supply voltage ranges. The MCP608-I/SN is suitable for applications requiring improved frequency response.

Q: Is the MCP631-E/SN suitable as a direct replacement for the OPA336UG4?

A: The MCP631-E/SN is mechanically compatible (8-SOIC package) and electrically compatible within the specified supply voltage and temperature ranges. However, the MCP631-E/SN offers substantially higher performance (10V/µs slew rate, 24 MHz bandwidth) and higher supply current (2.5mA vs. 20µA). This substitute is appropriate only if the application requires the enhanced bandwidth and slew rate characteristics.

Q: Can the RE46C311S8F be used in applications requiring -40°C operation?

A: No. The RE46C311S8F operates within a restricted temperature range of -10°C to 60°C and does not meet the -40°C to 85°C specification of the OPA336UG4. This substitute is unsuitable for applications requiring operation below -10°C.

Q: What packaging options are available for substitute parts?

A: All substitute parts are available in 8-SOIC surface mount packaging, identical to the OPA336UG4. The OPA336U is supplied in tube packaging, while MCP608-I/SN, MCP631-E/SN, and RE46C311S8F are supplied in tube packaging. All devices are ROHS3 compliant.

Q: Which substitute part offers the lowest power consumption?

A: The RE46C311S8F offers the lowest supply current at 600nA, compared to 20µA for the OPA336UG4 and OPA336U. However, the RE46C311S8F is restricted to the -10°C to 60°C operating temperature range and is suitable only for applications within this temperature window.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (OPA336U, MCP608-I/SN, MCP631-E/SN, and RE46C311S8F) are ROHS3 compliant and meet current regulatory requirements for hazardous substance restrictions.

Q: What is the moisture sensitivity level difference between the OPA336UG4 and substitute parts?

A: The OPA336UG4 carries MSL 2 (1 Year) rating. The OPA336U also carries MSL 2 (1 Year) rating. The MCP608-I/SN, MCP631-E/SN, and RE46C311S8F all carry MSL 1 (Unlimited) rating, indicating superior moisture resistance and longer shelf life without baking requirements.