OP27CJ8 Equivalent & Substitute Parts

Part Overview

The OP27CJ8 is a general-purpose operational amplifier manufactured by Analog Devices Inc., housed in an 8-CERDIP ceramic dual-in-line package. This device is classified as obsolete, though 1173 pieces remain in stock as new original inventory. The OP27CJ8 delivers precision performance with a gain-bandwidth product of 8 MHz, slew rate of 2.8 V/µs, and low input bias current of 15 nA, making it suitable for precision analog signal processing applications. Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity, long-term supply chain planning, and new production runs requiring active components with comparable electrical characteristics.

Substiute Parts

OP27CJ8

Analog Devices Inc.In Stock: 1196OP27CJ8 Datasheet

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OP27EZ

Analog Devices Inc.In Stock: 1813OP27EZ Datasheet

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JM38510/13506BPA

Texas InstrumentsIn Stock: 823JM38510/13506BPA Datasheet

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LM741J

Texas InstrumentsIn Stock: 7162LM741J Datasheet

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OP27AJGB

Texas InstrumentsIn Stock: 6413OP27AJGB Datasheet

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OP27CJGB

Texas InstrumentsIn Stock: 3062OP27CJGB Datasheet

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OP27GZ

Analog Devices Inc.In Stock: 2498OP27GZ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the OP27CJ8 is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Slew Rate: 2.8 V/µs (exact match required for signal fidelity)
• Gain Bandwidth Product: 8 MHz (exact match required for frequency response)
• Current - Input Bias: 15 nA or lower (lower values acceptable without circuit redesign)
• Voltage - Input Offset: 30 µV or lower (lower values acceptable without circuit redesign)
• Voltage - Supply Span: minimum 8 V to maximum 36 V (substitute must operate within or exceed this range)
• Operating Temperature: −55°C to 125°C (substitute must cover this range or be acceptable for the intended application temperature window)

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole (required for PCB compatibility)
• Package / Case: 8-CDIP or 8-DIP (0.300", 7.62 mm) (pin-compatible packages)
• Number of Circuits: 1 (single amplifier per package)

Substitute parts are grouped into two categories: Direct Electrical Equivalents (matching all electrical parameters) and Functional Equivalents (matching core electrical performance with acceptable parameter variations for general-purpose applications).

Parameter Comparison

Engineering Selection Recommendations

Direct Electrical Equivalents (Recommended Primary Substitutes):

OP27EZ (Analog Devices Inc.) is the primary recommended substitute for the OP27CJ8. This part maintains identical electrical performance specifications (2.8 V/µs slew rate, 8 MHz gain-bandwidth product, 8–36 V supply span) with improved input bias current (10 nA versus 15 nA) and input offset voltage (10 µV versus 30 µV). The OP27EZ is active in production, ROHS3 compliant, and available in 1765 pieces of new original inventory. The operating temperature range is narrower (−25°C to 85°C versus −55°C to 125°C), which must be evaluated against application requirements.

OP27CJGB (Texas Instruments) provides an exact electrical match to the OP27CJ8 with identical input bias current (15 nA) and input offset voltage (30 µV). This part is active in production, ROHS3 compliant, and available in 2967 pieces of new original inventory. The OP27CJGB operates across the full temperature range (−55°C to 125°C) and supports an extended maximum supply voltage (44 V versus 36 V). The package is 8-CDIP, ensuring mechanical compatibility.

OP27AJGB (Texas Instruments) matches the OP27CJ8 electrical performance with improved input bias current (10 nA) and input offset voltage (10 µV). This part is active in production, ROHS3 compliant, and available in 6370 pieces of new original inventory. The OP27AJGB operates across the full temperature range (−55°C to 125°C) and supports an extended maximum supply voltage (44 V).

OP27GZ (Analog Devices Inc.) maintains identical electrical performance (2.8 V/µs slew rate, 8 MHz gain-bandwidth product) with matching input bias current (15 nA) and input offset voltage (30 µV). This part is active in production, ROHS3 compliant, and available in 2391 pieces of new original inventory. The package is 8-DIP (0.300", 7.62 mm), which is pin-compatible with the 8-CDIP. The operating temperature range is −40°C to 85°C, which is narrower than the OP27CJ8.

JM38510/13506BPA (Texas Instruments) matches the OP27CJ8 electrical performance (2.8 V/µs slew rate, 8 MHz gain-bandwidth product) with improved input bias current (10 nA) and input offset voltage (10 µV). This part is active in production, ROHS3 compliant, and available in 779 pieces of new original inventory. The JM38510/13506BPA operates across the full temperature range (−55°C to 125°C) and supports an extended maximum supply voltage (44 V). The output type is specified as Push-Pull with 30 mA output current per channel.

Functional Equivalent (Limited Substitution):

LM741J (Texas Instruments) is a general-purpose operational amplifier with reduced electrical performance compared to the OP27CJ8. The LM741J exhibits a lower slew rate (0.5 V/µs versus 2.8 V/µs), lower gain-bandwidth product (1.5 MHz versus 8 MHz), higher input bias current (80 nA versus 15 nA), and significantly higher input offset voltage (1 mV versus 30 µV). This part is active in production, ROHS3 compliant, and available in 7066 pieces of new original inventory. The LM741J is suitable only for applications where the reduced performance specifications are acceptable and where the lower bandwidth and slew rate do not compromise circuit function.

Compliance and Supply Chain Considerations:

All active substitute parts are ROHS3 compliant, supporting modern manufacturing and environmental standards. The OP27CJ8 is obsolete; therefore, transitioning to an active substitute is necessary for long-term supply chain security. OP27EZ, OP27CJGB, OP27AJGB, and OP27GZ are all Analog Devices or Texas Instruments products with established production status and adequate inventory levels. Selection should prioritize operating temperature range requirements, supply voltage headroom, and input offset voltage specifications for the target application.

Frequently Asked Questions (FAQ)

Q: Can the OP27EZ directly replace the OP27CJ8 in all applications?

A: The OP27EZ is electrically compatible with the OP27CJ8 for applications operating within the temperature range of −25°C to 85°C. The OP27EZ has superior input bias current (10 nA) and input offset voltage (10 µV) specifications. If the application requires operation below −25°C or above 85°C, the OP27EZ is not suitable. For full temperature range coverage (−55°C to 125°C), use OP27CJGB, OP27AJGB, or JM38510/13506BPA.

Q: What is the difference between OP27CJGB and OP27AJGB?

A: Both parts are manufactured by Texas Instruments and operate across the full temperature range (−55°C to 125°C) with identical slew rate (2.8 V/µs) and gain-bandwidth product (8 MHz). The OP27AJGB has superior input bias current (10 nA versus 15 nA) and input offset voltage (10 µV versus 30 µV). The OP27CJGB matches the OP27CJ8 input specifications exactly. Selection depends on whether the improved precision of the OP27AJGB is required for the application.

Q: Is the OP27GZ package compatible with the OP27CJ8?

A: The OP27GZ uses an 8-DIP (0.300", 7.62 mm) package, while the OP27CJ8 uses an 8-CDIP package. Both packages have identical pin spacing and are mechanically compatible on standard through-hole PCBs. The electrical specifications are identical. The OP27GZ operating temperature range is −40°C to 85°C, which is narrower than the OP27CJ8.

Q: Why is the LM741J listed as a substitute if it has lower performance?

A: The LM741J is included as a functional equivalent for applications where the reduced electrical performance is acceptable. The LM741J has significantly lower slew rate (0.5 V/µs) and gain-bandwidth product (1.5 MHz), making it unsuitable for high-speed or precision signal processing. It is listed only for reference in legacy designs or applications with relaxed performance requirements.

Q: What supply voltage range should I use when substituting with JM38510/13506BPA?

A: The JM38510/13506BPA supports a supply voltage range of 8 V to 44 V, which exceeds the OP27CJ8 range of 8 V to 36 V. The circuit design should remain within the original 8–36 V specification unless the extended voltage capability is intentionally utilized. The part is electrically compatible across the original supply range.

Q: Are all substitute parts ROHS3 compliant?

A: All active substitute parts listed (OP27EZ, JM38510/13506BPA, LM741J, OP27AJGB, OP27CJGB, OP27GZ) are ROHS3 compliant. The OP27CJ8 compliance status is not specified in the provided data. ROHS3 compliance is required for modern manufacturing and environmental standards.

Q: Which substitute offers the best input offset voltage performance?

A: The OP27EZ, JM38510/13506BPA, and OP27AJGB all offer 10 µV input offset voltage, which is superior to the OP27CJ8 specification of 30 µV. The OP27CJGB and OP27GZ match the OP27CJ8 at 30 µV. Selection should be based on application precision requirements and operating temperature range.

Q: Can I use OP27EZ in a circuit designed for −55°C operation?

A: No. The OP27EZ operating temperature range is −25°C to 85°C. For applications requiring operation at −55°C, use OP27CJGB, OP27AJGB, JM38510/13506BPA, or OP27GZ (which operates to −40°C). Verify that the selected substitute meets the minimum temperature requirement.