OP27GS8#PBF Equivalent & Substitute Parts

Part Overview

The OP27GS8#PBF is a general-purpose operational amplifier manufactured by Analog Devices Inc., housed in an 8-SOIC surface mount package. This device is classified as Last Time Buy, indicating discontinued production with limited remaining inventory. The OP27GS8#PBF delivers a gain bandwidth product of 8 MHz with a slew rate of 2.8 V/µs, suitable for precision analog signal conditioning applications requiring low input offset voltage and low input bias current.

Identification of equivalent and substitute parts is necessary due to the Last Time Buy status of the OP27GS8#PBF. Alternative components within the same product family or from other manufacturers provide continued design support and extended component availability for new production runs and long-term system maintenance.

Substiute Parts

OP27GS8#PBF

Analog Devices Inc.In Stock: 1300OP27GS8#PBF Datasheet

Current PartRFQ

OP27GSZ

Analog Devices Inc.In Stock: 55261OP27GSZ Datasheet

MFR RecommendedRFQ

OP27GSZ-REEL

Analog Devices Inc.In Stock: 44206OP27GSZ-REEL Datasheet

UpgradeRFQ

OP27GSZ-REEL7

Analog Devices Inc.In Stock: 50165OP27GSZ-REEL7 Datasheet

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OPA227U

Texas InstrumentsIn Stock: 5694OPA227U Datasheet

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UA741CDT

STMicroelectronicsIn Stock: 82224UA741CDT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OP27GS8#PBF is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Gain Bandwidth Product: 8 MHz (primary performance specification)
• Slew Rate: 2.8 V/µs or higher (signal fidelity requirement)
• Input Bias Current: 15 nA or lower (precision requirement)
• Input Offset Voltage: 30 µV or lower (accuracy requirement)
• Supply Voltage Range: Minimum 8 V, Maximum 36 V (power supply compatibility)
• Operating Temperature Range: Must encompass or exceed -25°C ~ 85°C

Mechanical Compatibility Criteria:

• Package Type: 8-SOIC (0.154", 3.90mm Width) (PCB layout compatibility)
• Mounting Type: Surface Mount (assembly process compatibility)

Compliance Criteria:

• RoHS3 Compliance (regulatory requirement)
• REACH Unaffected status (material restriction compliance)

Substitute parts are classified into two categories: Manufacturer Recommended (direct replacements within the OP27 family) and Similar (alternative manufacturers meeting electrical and mechanical specifications).

Parameter Comparison

Engineering Selection Recommendations

Manufacturer Recommended Substitutes (Analog Devices OP27 Family):

The OP27GSZ, OP27GSZ-REEL, and OP27GSZ-REEL7 are direct functional equivalents of the OP27GS8#PBF. All three parts maintain identical electrical specifications (8 MHz gain bandwidth product, 2.8 V/µs slew rate, 15 nA input bias current, 30 µV input offset voltage) and are housed in the same 8-SOIC package. These parts carry Active product status with significantly higher inventory availability. The OP27GSZ-REEL and OP27GSZ-REEL7 variants differ only in packaging format (Cut Tape & Digi-Reel versus Tube), providing flexibility for different procurement and assembly workflows. All three variants support extended operating temperature range (-40°C ~ 85°C) compared to the original part, offering improved thermal performance margin. RoHS3 compliance and REACH unaffected status are maintained across all variants.

Similar Substitutes (Alternative Manufacturers):

The OPA227U (Texas Instruments) meets the 8 MHz gain bandwidth product specification and maintains 8-SOIC package compatibility. This device exhibits superior input bias current (2.5 nA) and input offset voltage (5 µV) performance. However, the OPA227U operates with a reduced minimum supply voltage (5 V versus 8 V) and carries Moisture Sensitivity Level 2 classification, requiring controlled storage conditions. The operating temperature range (-40°C ~ 85°C) exceeds the original specification.

The UA741CDT (STMicroelectronics) is a legacy general-purpose amplifier with 8-SOIC package compatibility but exhibits significantly reduced performance specifications: 1 MHz gain bandwidth product and 0.5 V/µs slew rate. The UA741CDT operating temperature range (0°C ~ 70°C) does not encompass the original -25°C lower limit. This device is suitable only for applications where reduced bandwidth and slew rate are acceptable.

Recommendation Priority:

1. OP27GSZ, OP27GSZ-REEL, or OP27GSZ-REEL7 for direct replacement with identical electrical performance and improved availability
2. OPA227U for applications requiring superior precision specifications and accepting reduced minimum supply voltage
3. UA741CDT only for legacy applications with reduced performance requirements

Frequently Asked Questions (FAQ)

Q: Can the OP27GSZ directly replace the OP27GS8#PBF without circuit modification?

A: Yes. The OP27GSZ maintains identical electrical specifications (gain bandwidth product, slew rate, input bias current, input offset voltage, and supply voltage range) and is housed in the same 8-SOIC package. No circuit modifications are required. The extended operating temperature range (-40°C ~ 85°C) provides additional thermal margin.

Q: What is the difference between OP27GSZ, OP27GSZ-REEL, and OP27GSZ-REEL7?

A: These three parts are electrically identical. The differences are packaging format only: OP27GSZ is supplied in Tube packaging, while OP27GSZ-REEL and OP27GSZ-REEL7 are supplied in Cut Tape & Digi-Reel format. Selection depends on procurement and assembly process requirements.

Q: Is the OPA227U a suitable replacement for the OP27GS8#PBF?

A: The OPA227U is electrically compatible for applications where the 8 MHz gain bandwidth product is the primary requirement. However, the OPA227U has a reduced minimum supply voltage (5 V versus 8 V) and carries Moisture Sensitivity Level 2, requiring controlled storage. Use OPA227U only when superior input precision (2.5 nA bias current, 5 µV offset voltage) justifies these trade-offs.

Q: Why is the UA741CDT listed as a substitute if it has lower performance?

A: The UA741CDT is listed as a similar substitute due to package compatibility and general-purpose amplifier classification. However, its 1 MHz gain bandwidth product and 0.5 V/µs slew rate represent significant performance reduction. The UA741CDT is suitable only for legacy applications or designs where reduced bandwidth is acceptable. The operating temperature range (0°C ~ 70°C) does not support the original -25°C lower limit.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (OP27GSZ, OP27GSZ-REEL, OP27GSZ-REEL7, OPA227U, and UA741CDT) are RoHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Q: What is the significance of the Last Time Buy status for the OP27GS8#PBF?

A: Last Time Buy status indicates that the OP27GS8#PBF is discontinued and no longer in production. Current inventory (1205 pieces) will be depleted without replenishment. Designs requiring this component should transition to an active substitute part (OP27GSZ variants recommended) to ensure long-term component availability for production and field service.

Q: Can I use the OPA227U in a circuit designed for the OP27GS8#PBF if the supply voltage is 8 V?

A: No. The OPA227U minimum supply voltage is 5 V, but the original circuit design may depend on the OP27GS8#PBF minimum specification of 8 V. Additionally, the OPA227U Moisture Sensitivity Level 2 requires controlled storage conditions. Verify circuit performance with the OPA227U reduced minimum supply voltage before implementation.

Q: Are the OP27 family parts pin-compatible with the UA741CDT?

A: Yes. All listed parts use the 8-SOIC package with identical pin assignments, providing mechanical and electrical pin compatibility. However, the UA741CDT exhibits significantly reduced performance specifications and does not support the full operating temperature range of the original design.