OP37GS8#TRPBF Equivalent & Substitute Parts

Part Overview

The OP37GS8#TRPBF is a general-purpose operational amplifier manufactured by Analog Devices Inc., housed in an 8-SOIC surface mount package. This linear amplifier integrated circuit is designed for applications requiring moderate bandwidth and low input offset voltage characteristics. The part is currently in active production status with 851 units in stock.

Substitute parts are necessary when the original packaging format (Tape & Reel) is unavailable, when extended operating temperature ranges are required, or when alternative sourcing from qualified manufacturers is needed to ensure supply chain continuity and cost optimization.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Slew Rate	17	V/µs
Gain Bandwidth Product	63	MHz
Current - Input Bias	15	nA
Voltage - Input Offset	30	µV
Voltage - Supply Span (Min)	8	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-25°C ~ 85°C	—
Mounting Type	Surface Mount	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the OP37GS8#TRPBF is determined by electrical and mechanical parameter compatibility within the general-purpose operational amplifier category. The critical parameters governing substitution are:

Electrical Compatibility Parameters:

Slew Rate: 17 V/µs
Gain Bandwidth Product: 63 MHz
Current - Input Bias: 15 nA
Voltage - Input Offset: 30 µV
Voltage - Supply Span: 8 V to 36 V

Mechanical Compatibility Parameters:

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

Compliance Parameters:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped into two categories:

Direct Upgrades (OP37 Series): Parts OP37GSZ, OP37GSZ-REEL, and OP37GSZ-REEL7 maintain identical electrical specifications and package dimensions. These upgrades offer extended operating temperature range (-40°C ~ 85°C) and alternative packaging formats (Tube, Cut Tape & Digi-Reel®) while preserving all critical electrical parameters.

Similar Alternatives: Parts OPA228U, OPA37GU/2K5, and UA741CDT provide functional equivalence in the 8-SOIC package with variations in electrical performance characteristics. These alternatives are suitable when specific electrical parameter deviations are acceptable for the application.

Parameter Comparison

Parameter	OP37GS8#TRPBF	OP37GSZ	OP37GSZ-REEL	OP37GSZ-REEL7	OPA228U	OPA37GU/2K5	UA741CDT
Manufacturer	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Texas Instruments	Texas Instruments	STMicroelectronics
Slew Rate (V/µs)	17	17	17	17	11	11.9	0.5
Gain Bandwidth Product (MHz)	63	63	63	63	33	63	1
Current - Input Bias (nA)	15	15	15	15	2.5	15	10
Voltage - Input Offset (µV)	30	30	30	30	5	25	1000
Voltage - Supply Span Min (V)	8	8	8	8	5	8	10
Voltage - Supply Span Max (V)	36	36	36	36	36	44	44
Operating Temperature (°C)	-25 ~ 85	-40 ~ 85	-40 ~ 85	-40 ~ 85	-40 ~ 85	-40 ~ 85	0 ~ 70
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Packaging Format	Tape & Reel (TR)	Tube	Cut Tape & Digi-Reel®	Cut Tape & Digi-Reel®	Tube	Cut Tape & Digi-Reel®	Cut Tape & Digi-Reel®
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	2 (1 Year)	3 (168 Hours)	1 (Unlimited)

Engineering Selection Recommendations

Direct Substitution (Recommended for Pin-Compatible Replacement):

OP37GSZ, OP37GSZ-REEL, and OP37GSZ-REEL7 are direct electrical equivalents of the OP37GS8#TRPBF. All three parts maintain identical electrical specifications (Slew Rate, Gain Bandwidth Product, Input Bias Current, Input Offset Voltage, and Supply Voltage Range) and are housed in the same 8-SOIC package. These parts are ROHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited), matching the original part's compliance profile. The primary differences are packaging format and extended operating temperature range (-40°C ~ 85°C versus -25°C ~ 85°C). Selection among these three should be based on procurement requirements: OP37GSZ for tube packaging, OP37GSZ-REEL or OP37GSZ-REEL7 for cut tape and Digi-Reel® formats.

Alternative Substitution (When Electrical Parameter Variation is Acceptable):

OPA37GU/2K5 (Texas Instruments) provides equivalent Gain Bandwidth Product (63 MHz) and Input Bias Current (15 nA) with slightly lower Slew Rate (11.9 V/µs) and Input Offset Voltage (25 µV). This part supports extended supply voltage range (8 V to 44 V) and operates across -40°C ~ 85°C. Moisture Sensitivity Level 3 (168 Hours) requires controlled storage conditions.

OPA228U (Texas Instruments) offers superior Input Bias Current (2.5 nA) and Input Offset Voltage (5 µV) but with reduced Slew Rate (11 V/µs) and Gain Bandwidth Product (33 MHz). This part is suitable for applications prioritizing low input offset characteristics over bandwidth performance. Moisture Sensitivity Level 2 (1 Year) provides intermediate storage requirements.

UA741CDT (STMicroelectronics) is a legacy general-purpose amplifier with significantly reduced performance specifications (Slew Rate 0.5 V/µs, Gain Bandwidth Product 1 MHz, Input Offset Voltage 1 mV). This part operates within a narrower temperature range (0°C ~ 70°C) and requires minimum supply voltage of 10 V. Selection of this part is appropriate only for applications with minimal bandwidth and speed requirements.

All substitute parts are ROHS3 compliant and carry active product status.

Frequently Asked Questions (FAQ)

Q: Can OP37GSZ be used as a direct replacement for OP37GS8#TRPBF?

A: Yes. OP37GSZ is electrically identical to OP37GS8#TRPBF with matching Slew Rate (17 V/µs), Gain Bandwidth Product (63 MHz), Input Bias Current (15 nA), Input Offset Voltage (30 µV), and Supply Voltage Range (8 V to 36 V). Both are housed in 8-SOIC packages with identical pin configurations. The primary difference is packaging format (Tube versus Tape & Reel) and extended operating temperature range on OP37GSZ (-40°C ~ 85°C).

Q: What is the difference between OP37GSZ, OP37GSZ-REEL, and OP37GSZ-REEL7?

A: These three parts are electrically identical. The differences are in packaging format: OP37GSZ is supplied in Tube packaging, while OP37GSZ-REEL and OP37GSZ-REEL7 are supplied in Cut Tape & Digi-Reel® format. Selection depends on assembly line requirements and procurement preferences. All three maintain identical electrical specifications and compliance certifications.

Q: Is OPA37GU/2K5 a suitable substitute for OP37GS8#TRPBF?

A: OPA37GU/2K5 is functionally compatible with matching Gain Bandwidth Product (63 MHz) and Input Bias Current (15 nA). However, it exhibits lower Slew Rate (11.9 V/µs versus 17 V/µs) and lower Input Offset Voltage (25 µV versus 30 µV). The part supports extended supply voltage range (8 V to 44 V) and operates across -40°C ~ 85°C. Substitution is appropriate when the reduced Slew Rate is acceptable for the application. Moisture Sensitivity Level 3 requires controlled storage conditions.

Q: Why would OPA228U be selected over OP37GS8#TRPBF?

A: OPA228U offers superior low-noise characteristics with Input Bias Current of 2.5 nA and Input Offset Voltage of 5 µV, compared to 15 nA and 30 µV respectively on the OP37GS8#TRPBF. However, OPA228U has reduced Slew Rate (11 V/µs) and Gain Bandwidth Product (33 MHz). Selection of OPA228U is appropriate for precision measurement applications where input offset and bias current minimization is prioritized over bandwidth performance.

Q: Can UA741CDT replace OP37GS8#TRPBF?

A: UA741CDT is not recommended as a direct replacement. While both are general-purpose operational amplifiers in 8-SOIC packages, UA741CDT has significantly reduced performance specifications: Slew Rate of 0.5 V/µs (versus 17 V/µs), Gain Bandwidth Product of 1 MHz (versus 63 MHz), and Input Offset Voltage of 1 mV (versus 30 µV). Additionally, UA741CDT operates within a narrower temperature range (0°C ~ 70°C) and requires minimum supply voltage of 10 V. Selection of UA741CDT is appropriate only for legacy applications with minimal bandwidth requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (OP37GSZ, OP37GSZ-REEL, OP37GSZ-REEL7, OPA228U, OPA37GU/2K5, and UA741CDT) are ROHS3 compliant, matching the compliance status of the original OP37GS8#TRPBF.

Q: What is the significance of Moisture Sensitivity Level differences?

A: Moisture Sensitivity Level (MSL) indicates the maximum time a component can be exposed to ambient conditions (typically 30°C, 85% relative humidity) before baking is required. OP37GS8#TRPBF, OP37GSZ variants, and UA741CDT carry MSL 1 (Unlimited), requiring no time-based storage restrictions. OPA228U carries MSL 2 (1 Year), and OPA37GU/2K5 carries MSL 3 (168 Hours), both requiring controlled storage and potential baking before assembly. Selection should account for manufacturing logistics and storage capabilities.

Q: Do all substitute parts use the same 8-SOIC package?

A: Yes. All substitute parts are housed in 8-SOIC (0.154", 3.90mm Width) packages with identical mechanical dimensions and pin configurations, ensuring direct PCB compatibility without layout modifications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message