OP293FS-REEL Equivalent & Substitute Parts

Part Overview

The OP293FS-REEL is a general-purpose operational amplifier manufactured by Analog Devices Inc., housed in an 8-SOIC surface mount package. This single-circuit amplifier is classified as obsolete, with a slew rate of 0.015 V/µs and a gain bandwidth product of 35 kHz. The obsolete status of this component necessitates identification of functionally equivalent alternatives for ongoing design support and production continuity.

Key Parameters

Parameter	OP293FS-REEL
Manufacturer	Analog Devices Inc.
Product Status	Obsolete
Amplifier Type	General Purpose
Number of Circuits	1
Slew Rate	0.015 V/µs
Gain Bandwidth Product	35 kHz
Current - Input Bias	20 nA
Voltage - Input Offset	250 µV
Current - Output / Channel	25 mA
Voltage - Supply Span (Min)	1.7 V
Voltage - Supply Span (Max)	36 V
Operating Temperature	-40°C ~ 125°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the OP293FS-REEL is determined by the following critical parameters: package compatibility (8-SOIC form factor), amplifier type (general purpose), mounting method (surface mount), and electrical operating ranges (supply voltage span and temperature range). The OP293FS-REEL is a single-circuit amplifier with low slew rate (0.015 V/µs) and narrow bandwidth (35 kHz), characteristics typical of legacy general-purpose designs.

Substitute parts are grouped into two categories:

Direct Manufacturer Equivalent: OP293FSZ-REEL maintains identical electrical specifications and differs only in packaging format (Tape & Reel) and product status (Active). This part is the primary direct replacement.

Functional Alternatives: Parts including LM258ADT, LM258DT, LM2904AYDT, LM2904DT, LM2904YDT, LM358ADT, LM358DT, MC33078DT, and MC33078YDT share the 8-SOIC package and general-purpose amplifier classification. These alternatives operate within compatible supply voltage ranges and temperature specifications. However, these parts feature dual-circuit configurations (2 circuits versus 1 circuit in the OP293FS-REEL) and exhibit higher slew rates and bandwidth products, indicating enhanced performance characteristics suitable for applications where the OP293FS-REEL's performance envelope is acceptable or where higher performance is beneficial.

Parameter Comparison

Parameter	OP293FS-REEL	OP293FSZ-REEL	LM258ADT	LM258DT	LM2904AYDT	LM2904DT	LM2904YDT	LM358ADT	LM358DT	MC33078DT	MC33078YDT
Manufacturer	Analog Devices Inc.	Analog Devices Inc.	STMicroelectronics	STMicroelectronics	STMicroelectronics	Rohm Semiconductor	STMicroelectronics	STMicroelectronics	Rohm Semiconductor	STMicroelectronics	STMicroelectronics
Product Status	Obsolete	Active	Active	Active	Active	Not For New Designs	Active	Active	Obsolete	Active	Active
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	1	1	2	2	2	2	2	2	2	2	2
Slew Rate (V/µs)	0.015	0.015	0.6	0.6	0.6	0.3	0.6	0.6	0.3	7	7
Gain Bandwidth Product (kHz)	35	35	1100	1100	1100	700	700	1100	800	15000	15000
Current - Input Bias (nA)	20	20	20	20	20	20	20	20	20	250	250
Voltage - Input Offset (µV)	250	250	1000	5000	1000	1000	2000	1000	1000	150	150
Current - Output / Channel (mA)	25	25	40	40	40	30	30	40	30	37	37
Voltage - Supply Span (Min) (V)	1.7	1.7	3	3	3	3	3	3	3	5	5
Voltage - Supply Span (Max) (V)	36	36	30	30	30	32	30	30	32	30	30
Operating Temperature (°C)	-40 ~ 125	-40 ~ 125	-40 ~ 105	-40 ~ 105	-40 ~ 125	-40 ~ 125	-40 ~ 125	0 ~ 70	-40 ~ 85	-40 ~ 105	-40 ~ 105
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: OP293FSZ-REEL

The OP293FSZ-REEL is the direct equivalent of the OP293FS-REEL, maintaining identical electrical specifications and operating parameters. This part is currently in Active product status, ensuring long-term availability and supply chain continuity. The OP293FSZ-REEL differs only in packaging format (Tape & Reel versus individual packaging) and holds ROHS3 compliance certification. Selection of this part eliminates all technical substitution considerations and is appropriate for direct replacement in existing designs.

Secondary Recommendations for Enhanced Performance Applications

For applications where the OP293FS-REEL's performance envelope is acceptable but higher performance characteristics are beneficial, the following active-status parts are suitable:

LM2904AYDT and LM2904YDT (STMicroelectronics) provide dual-circuit configurations with improved slew rates (0.6 V/µs) and higher bandwidth (700 kHz to 1.1 MHz). Both parts maintain the -40°C to 125°C operating temperature range and hold AEC-Q100 automotive qualification. LM2904AYDT offers 1 mV input offset voltage specification.

LM258ADT (STMicroelectronics) provides dual-circuit configuration with 1.1 MHz bandwidth and 0.6 V/µs slew rate, with AEC-Q100 automotive qualification and -40°C to 105°C operating range.

MC33078DT and MC33078YDT (STMicroelectronics) deliver significantly enhanced performance with 7 V/µs slew rate and 15 MHz bandwidth, suitable for applications requiring higher-speed operation. Both parts hold AEC-Q100 automotive qualification and operate across -40°C to 105°C temperature range. Minimum supply voltage requirement is 5 V.

Parts to Avoid

LM358DT (Rohm Semiconductor) is classified as Obsolete and is not recommended for new designs.

LM2904DT (Rohm Semiconductor) is classified as Not For New Designs and should not be selected for ongoing production.

Frequently Asked Questions (FAQ)

Q: Can the OP293FSZ-REEL directly replace the OP293FS-REEL in existing designs?

A: Yes. The OP293FSZ-REEL is electrically and functionally identical to the OP293FS-REEL. The only difference is packaging format (Tape & Reel). Both parts operate within identical electrical specifications, temperature ranges, and supply voltage ranges. No circuit modifications are required.

Q: Why do substitute parts like LM258ADT and LM2904AYDT have two circuits instead of one?

A: The OP293FS-REEL contains a single operational amplifier circuit. Substitute parts in the LM258 and LM2904 families contain two independent amplifier circuits within the same 8-SOIC package. In applications using only one amplifier, the second circuit remains unused. This configuration does not prevent substitution; the used circuit operates identically to the OP293FS-REEL within the specified parameters.

Q: Are all substitute parts compatible with the 8-SOIC package footprint?

A: Yes. All listed substitute parts are housed in 8-SOIC packages with identical physical dimensions (0.154" width, 3.90mm). PCB footprints are compatible without modification.

Q: What is the significance of the slew rate difference between the OP293FS-REEL (0.015 V/µs) and alternatives like LM258ADT (0.6 V/µs)?

A: Slew rate determines the maximum rate of voltage change at the amplifier output. The OP293FS-REEL's low slew rate (0.015 V/µs) is suitable for low-frequency, precision applications. Substitute parts with higher slew rates (0.6 V/µs to 7 V/µs) support faster signal transitions and higher-frequency operation. For applications designed around the OP293FS-REEL's low-frequency characteristics, higher slew rate alternatives remain compatible and do not introduce circuit instability.

Q: What does "Not For New Designs" status mean for LM2904DT?

A: Parts designated "Not For New Designs" are in mature or declining production phases. While existing inventory may be available, manufacturers do not recommend these parts for new product development. For new designs, select parts with Active status such as LM2904AYDT or LM2904YDT.

Q: Are the substitute parts RoHS compliant?

A: All listed substitute parts hold ROHS3 compliance certification. The original OP293FS-REEL does not specify RoHS status. The OP293FSZ-REEL (direct equivalent) is ROHS3 compliant.

Q: What is the minimum supply voltage requirement for MC33078DT compared to the OP293FS-REEL?

A: The OP293FS-REEL operates with a minimum supply voltage of 1.7 V. The MC33078DT requires a minimum supply voltage of 5 V. This difference restricts MC33078DT use to applications with 5 V or higher supply rails. For applications operating below 5 V, MC33078DT is not suitable.

Q: Can I use LM358ADT in a design requiring -40°C to 125°C operation?

A: No. The LM358ADT operates across 0°C to 70°C temperature range, which does not cover the full -40°C to 125°C range of the OP293FS-REEL. For applications requiring full -40°C to 125°C operation, select LM2904AYDT, LM2904YDT, or OP293FSZ-REEL.

Q: What does AEC-Q100 qualification indicate?

A: AEC-Q100 is an automotive industry qualification standard. Parts holding this certification have undergone rigorous testing for reliability and performance in automotive applications. LM258ADT, LM2904AYDT, LM2904YDT, MC33078DT, and MC33078YDT hold AEC-Q100 qualification, indicating suitability for automotive and high-reliability applications.

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