CA3140M Equivalent & Substitute Parts

Part Overview

The CA3140M is a general-purpose operational amplifier manufactured by Renesas Electronics Corporation, housed in an 8-SOIC surface mount package. This device is classified as obsolete, indicating discontinued production and limited availability in the market. The CA3140M serves applications requiring low input bias current and moderate bandwidth performance in compact form factors. Due to its obsolete status, identifying functionally equivalent active alternatives is essential for design continuity and procurement planning.

Substiute Parts

CA3140M

Renesas Electronics CorporationIn Stock: 1802CA3140M Datasheet

Current PartRFQ

CA3140MZ

Renesas Electronics CorporationIn Stock: 18173CA3140MZ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CA3140M is determined by electrical and mechanical parameter equivalence across the following criteria:

Electrical Parameters (Must Match):

• Amplifier Type: General Purpose
• Number of Circuits: 1
• Slew Rate: 9 V/µs
• Gain Bandwidth Product: 4.5 MHz
• Current - Input Bias: 10 pA
• Voltage - Input Offset: 5 mV
• Current - Supply: 4 mA
• Current - Output / Channel: 40 mA
• Voltage - Supply Span: 4 V to 36 V
• Operating Temperature Range: -55°C to 125°C

Mechanical Parameters (Must Match):

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

The CA3140MZ qualifies as a direct substitute based on identical electrical specifications and mechanical compatibility. The primary distinction between these parts is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

CA3140MZ as Primary Substitute:

The CA3140MZ is the direct functional equivalent of the CA3140M. All electrical parameters and mechanical specifications are identical, ensuring pin-for-pin and functional compatibility in existing circuit designs. The CA3140MZ is currently in active production status, providing reliable long-term availability and supply chain stability compared to the obsolete CA3140M.

Compliance Considerations:

The CA3140MZ carries ROHS3 compliance certification, whereas the CA3140M is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the CA3140MZ is the appropriate selection. Both parts maintain REACH Unaffected status and EAR99 export classification.

Packaging and Inventory:

The CA3140MZ is supplied in tube packaging format, with significantly higher inventory availability (18,150 pieces) compared to the CA3140M (1,700 pieces). This availability differential reinforces the CA3140MZ as the preferred substitute for new procurement and design transitions.

Frequently Asked Questions (FAQ)

Q: Can the CA3140MZ be used as a direct replacement for the CA3140M in existing designs?

A: Yes. The CA3140MZ is electrically and mechanically identical to the CA3140M. All electrical parameters, including slew rate, gain bandwidth product, input bias current, and supply voltage range, are equivalent. The 8-SOIC package dimensions and surface mount configuration are identical, enabling direct substitution without circuit modification.

Q: What is the primary difference between the CA3140M and CA3140MZ?

A: The CA3140M is obsolete, while the CA3140MZ is in active production. The CA3140MZ also carries ROHS3 compliance certification, whereas the CA3140M is RoHS non-compliant. Functionally, both devices are identical.

Q: Why should I transition from CA3140M to CA3140MZ?

A: The CA3140M is discontinued, creating long-term supply uncertainty. The CA3140MZ provides active production status, ensuring consistent availability. Additionally, the CA3140MZ meets modern RoHS3 regulatory requirements, supporting compliance with environmental and procurement standards.

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

A: No. Both parts operate across the identical temperature range (-55°C to 125°C) and deliver identical electrical performance specifications. Thermal characteristics and performance metrics are equivalent.

Q: What packaging formats are available for each part?

A: The CA3140M packaging format is not specified in available documentation. The CA3140MZ is supplied in tube packaging. Both parts use the 8-SOIC surface mount package format.

Q: Can I mix CA3140M and CA3140MZ components in the same production batch?

A: Yes. Since both parts are electrically and mechanically identical, they can be used interchangeably within the same circuit design and production environment. However, for consistency and compliance purposes, standardizing on the CA3140MZ is recommended for new production runs.