OPA132UG4 Equivalent & Substitute Parts

Part Overview

The OPA132UG4 is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface-mount package. This device is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and production continuity. The OPA132UG4 delivers 1 circuit with a slew rate of 20V/µs, gain bandwidth product of 8 MHz, and operates across a supply voltage range of 5V to 36V. Substitution is required due to the obsolete product status while maintaining functional compatibility within specified electrical parameters.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Slew Rate	20	V/µs
Gain Bandwidth Product	8	MHz
Current - Input Bias	5	pA
Voltage - Input Offset	250	µV
Current - Supply	4	mA
Voltage - Supply Span (Min)	5	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-40 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	3 (168 Hours)	—

Substitute Part Grouping Explanation

Substitution of the OPA132UG4 is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Critical Parameters for Substitution:

Amplifier Type (General Purpose vs. J-FET architecture)
Slew Rate (20V/µs minimum for direct replacement)
Gain Bandwidth Product (8 MHz nominal)
Supply Voltage Range (minimum 5V, maximum 36V)
Package Type (8-SOIC surface mount)
Input Bias Current and Input Offset Voltage characteristics
Operating Temperature Range (-40°C to 85°C preferred)

Substitution Categories:

Category 1: Direct Functional Equivalents (Active Status) OPA132U (Texas Instruments) - Identical electrical specifications with active product status and tube packaging. Serves as the primary recommended substitute.

Category 2: J-FET Architecture Alternatives AD711KRZ, AD711KRZ-REEL, AD711KRZ-REEL7, and AD8510BRZ-REEL7 (Analog Devices Inc.) - J-FET input amplifiers with comparable slew rate (20V/µs), similar gain bandwidth product, and extended operating temperature range. These devices feature lower input bias current (15-25 pA) and reduced input offset voltage (80-200 µV), suitable for applications requiring lower input impedance loading.

Category 3: General Purpose Alternatives with Parameter Variations HA9P5127-5ZX96 (Renesas Electronics Corporation) - General-purpose amplifier with 8.5 MHz gain bandwidth product and 10V/µs slew rate. Supply voltage range limited to 10V-30V. Suitable for applications not requiring the full 5V minimum supply specification.

Category 4: J-FET Amplifiers with Reduced Bandwidth LT1055S8#PBF, LT1055S8#TRPBF, LT1056S8#PBF, LT1056S8#TRPBF (Analog Devices Inc.) - J-FET input devices with 4.5-5.5 MHz gain bandwidth product and 12-14V/µs slew rate. Suitable for applications where reduced bandwidth is acceptable and lower input bias current is beneficial.

Parameter Comparison

Part Number	Manufacturer	Product Status	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Packaging Type
OPA132UG4	Texas Instruments	Obsolete	General Purpose	20	8	5	250	5	36	-40 to 85	8-SOIC	—
OPA132U	Texas Instruments	Active	General Purpose	20	8	5	250	5	36	-40 to 85	8-SOIC	Tube
AD711KRZ	Analog Devices Inc.	Active	J-FET	20	4	15	200	9	36	0 to 70	8-SOIC	Tube
AD711KRZ-REEL	Analog Devices Inc.	Active	J-FET	20	4	15	200	9	36	0 to 70	8-SOIC	Tape & Reel
AD711KRZ-REEL7	Analog Devices Inc.	Active	J-FET	20	4	15	200	9	36	0 to 70	8-SOIC	Cut Tape & Digi-Reel
AD8510BRZ-REEL7	Analog Devices Inc.	Active	J-FET	20	8	25	80	9	36	-40 to 125	8-SOIC	Cut Tape & Digi-Reel
HA9P5127-5ZX96	Renesas Electronics	Active	General Purpose	10	8.5	15000	30	10	30	0 to 75	8-SOIC	Tape & Reel
LT1055S8#PBF	Analog Devices Inc.	Active	J-FET	12	4.5	30	500	10	36	0 to 70	8-SOIC	Tube
LT1055S8#TRPBF	Analog Devices Inc.	Active	J-FET	12	4.5	30	500	10	36	0 to 70	8-SOIC	Tape & Reel
LT1056S8#PBF	Analog Devices Inc.	Active	J-FET	14	5.5	30	500	10	36	0 to 70	8-SOIC	Tube
LT1056S8#TRPBF	Analog Devices Inc.	Active	J-FET	14	5.5	30	500	10	36	0 to 70	8-SOIC	Tape & Reel

Engineering Selection Recommendations

Primary Recommendation: OPA132U

The OPA132U (Texas Instruments) is the preferred substitute for the obsolete OPA132UG4. This device maintains identical electrical specifications including 20V/µs slew rate, 8 MHz gain bandwidth product, 5pA input bias current, and 250µV input offset voltage. The supply voltage range (5V to 36V) and operating temperature range (-40°C to 85°C) are fully compatible. Both devices are ROHS3 compliant and carry identical REACH and ECCN classifications. The OPA132U is currently in active production status with 1101 pieces in stock, ensuring supply continuity. The only difference is packaging format (tube vs. original specification), which does not affect electrical performance.

Secondary Recommendation: AD8510BRZ-REEL7

For applications requiring extended operating temperature range (-40°C to 125°C) and superior input offset voltage performance (80µV vs. 250µV), the AD8510BRZ-REEL7 (Analog Devices Inc.) is suitable. This J-FET input device matches the 20V/µs slew rate and 8 MHz gain bandwidth product of the OPA132UG4. The higher input bias current (25pA vs. 5pA) and increased output current capability (70mA vs. unspecified) may require circuit evaluation. ROHS3 compliance and REACH unaffected status are maintained. Supply voltage range (9V to 36V) requires verification that the 5V minimum specification is not critical to the application.

Tertiary Recommendation: AD711KRZ-REEL7

For applications where input bias current minimization is essential, the AD711KRZ-REEL7 (Analog Devices Inc.) provides 15pA input bias current with 20V/µs slew rate. The reduced gain bandwidth product (4 MHz vs. 8 MHz) and narrower operating temperature range (0°C to 70°C) require application-specific evaluation. Minimum supply voltage requirement of 9V must be verified against circuit design constraints.

Not Recommended for Direct Substitution:

HA9P5127-5ZX96 exhibits reduced slew rate (10V/µs vs. 20V/µs) and restricted supply voltage range (10V to 30V minimum). LT1055S8 and LT1056S8 series devices feature reduced gain bandwidth product (4.5-5.5 MHz) and slew rate (12-14V/µs), suitable only for applications where these reduced specifications are acceptable.

Frequently Asked Questions (FAQ)

Q1: Can the OPA132U directly replace the OPA132UG4 without circuit modification?

A: Yes. The OPA132U maintains identical electrical specifications across all critical parameters: slew rate (20V/µs), gain bandwidth product (8 MHz), input bias current (5pA), input offset voltage (250µV), and supply voltage range (5V to 36V). The device operates within the same temperature range (-40°C to 85°C). The only difference is packaging format (tube vs. original). No circuit modification is required.

Q2: What is the primary reason for substituting the OPA132UG4?

A: The OPA132UG4 is classified as obsolete. The OPA132U is the active equivalent from the same manufacturer, ensuring continued availability and supply chain reliability for new production and design updates.

Q3: Are J-FET input alternatives (AD711, AD8510) suitable replacements?

A: J-FET alternatives are suitable only if the application can tolerate architectural differences. These devices feature lower input bias current (15-25pA vs. 5pA) but may exhibit different frequency response characteristics. The AD711 series has reduced gain bandwidth product (4 MHz vs. 8 MHz). The AD8510BRZ-REEL7 maintains 8 MHz bandwidth and 20V/µs slew rate, making it more compatible. Verify that the minimum supply voltage requirement (9V vs. 5V) does not conflict with circuit design.

Q4: What is the significance of packaging format differences (Tube vs. Tape & Reel)?

A: Packaging format affects handling, storage, and automated assembly processes but does not impact electrical performance. Tube packaging is suitable for manual assembly and lower-volume production. Tape & Reel and Cut Tape & Digi-Reel formats are optimized for high-volume automated pick-and-place assembly. Select based on production methodology and volume requirements.

Q5: Why does the HA9P5127-5ZX96 have a higher input bias current specification?

A: The HA9P5127-5ZX96 is a general-purpose amplifier from Renesas Electronics with different input stage architecture compared to the OPA132UG4. The 15nA input bias current (vs. 5pA) reflects this design approach. This device is suitable only for applications where input bias current in the nanoampere range is acceptable. Applications requiring picoampere-level input bias current should select OPA132U or J-FET alternatives.

Q6: What compliance certifications are maintained across all substitute options?

A: All recommended substitute parts maintain ROHS3 compliance and REACH unaffected status. ECCN classification (EAR99) and HTSUS code (8542.33.0001) are identical across all options. Moisture Sensitivity Level varies: OPA132U and HA9P5127-5ZX96 maintain MSL 3 (168 Hours), while J-FET alternatives feature MSL 1 (Unlimited), providing superior moisture tolerance during storage and handling.

Q7: Can the LT1055S8 or LT1056S8 series be used as substitutes?

A: These devices are suitable only for applications where reduced slew rate (12-14V/µs vs. 20V/µs) and reduced gain bandwidth product (4.5-5.5 MHz vs. 8 MHz) are acceptable. The minimum supply voltage requirement (10V vs. 5V) must also be verified. These are not recommended for direct substitution in designs optimized for the OPA132UG4 specifications.

Q8: What is the inventory status of recommended substitutes?

A: OPA132U has 1101 pieces in stock. AD8510BRZ-REEL7 has 1940 pieces available. AD711KRZ-REEL7 has 7628 pieces in stock. All recommended substitutes maintain active product status with adequate inventory for production continuity.

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