LF353D Equivalent & Substitute Parts

Part Overview

The LF353D is a J-FET input operational amplifier manufactured by Texas Instruments, configured as a dual-channel (2 circuit) device in 8-SOIC surface mount packaging. This component is classified as obsolete, though 8,671 units remain in stock as new original inventory. The LF353D operates across a wide supply voltage range of 7V to 36V and is suitable for applications requiring low input bias current and moderate bandwidth performance. Due to its obsolete status, equivalent and substitute parts are necessary for ongoing design support, production continuity, and long-term component availability assurance.

Key Parameters

Parameter	Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	2	—
Slew Rate	13	V/µs
Gain Bandwidth Product	3	MHz
Current - Input Bias	50	pA
Voltage - Input Offset	5	mV
Current - Supply (x2 Channels)	3.6	mA
Current - Output / Channel	40	mA
Voltage - Supply Span (Min)	7	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	0 to 70	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LF353D is determined by strict alignment of electrical and mechanical parameters within the operational amplifier category. The primary substitution criteria are:

Critical Parameters for Substitution:

Amplifier Type (J-FET input topology)
Number of Circuits (dual-channel configuration)
Package / Case (8-SOIC form factor)
Mounting Type (Surface Mount)
Supply Voltage Range compatibility (minimum 7V, maximum 36V)
Operating Temperature Range (minimum 0°C, maximum 70°C or wider)

Secondary Parameters for Compatibility Assessment:

Slew Rate (13 V/µs baseline)
Gain Bandwidth Product (3 MHz baseline)
Input Bias Current (50 pA baseline)
Input Offset Voltage (5 mV baseline)
Supply Current and Output Current ratings

Substitute parts are grouped into two categories:

Category A - Direct Functional Equivalents (J-FET Input Amplifiers): Parts that maintain J-FET input topology with identical or superior electrical performance within the specified supply and temperature ranges. These include LF353DR, LF353M/NOPB, LF353MX/NOPB, ADTL082ARZ-REEL7, and LF353DT.

Category B - Functional Alternatives (Different Amplifier Types): Parts that differ in amplifier topology (Audio or General Purpose) but maintain dual-channel 8-SOIC packaging and compatible supply voltage ranges. These include OP275GSZ variants, LM833DT, and NJM4558E-TE2. These alternatives require application-level verification due to different input characteristics.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (mV)	Supply Current (mA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Status
LF353D	Texas Instruments	J-FET	13	3	50	5	3.6	40	7	36	0 to 70	Obsolete
LF353DR	Texas Instruments	J-FET	13	3	50	5	3.6	40	7	36	0 to 70	Active
LF353M/NOPB	Texas Instruments	J-FET	13	4	50	5	3.6	—	10	36	0 to 70	Active
LF353MX/NOPB	Texas Instruments	J-FET	13	4	50	5	3.6	—	10	36	0 to 70	Active
ADTL082ARZ-REEL7	Analog Devices Inc.	J-FET	20	5	2	1.5	1.2	27	8	36	-40 to 125	Active
LF353DT	STMicroelectronics	J-FET	16	4	20	3	1.4	40	6	36	0 to 70	Active
LM833DT	STMicroelectronics	Audio	7	15	300 nA	0.3	4	37	5	30	-40 to 105	Active
NJM4558E-TE2	Nisshinbo Micro Devices Inc.	General Purpose	1	3	25 nA	0.5	3.5	—	8	36	-40 to 85	Active
OP275GSZ	Analog Devices Inc.	Audio	22	9	100 nA	1	4	90	9	44	-40 to 85	Active
OP275GSZ-REEL	Analog Devices Inc.	Audio	22	9	100 nA	1	4	90	9	44	-40 to 85	Active
OP275GSZ-REEL7	Analog Devices Inc.	Audio	22	9	100 nA	1	4	90	9	44	-40 to 85	Active

Engineering Selection Recommendations

Primary Recommendation - Direct Equivalent:

The LF353DR (Texas Instruments, Active status) is the direct functional equivalent to the LF353D. It maintains identical electrical specifications across all critical parameters: J-FET input topology, dual-channel configuration, 13 V/µs slew rate, 3 MHz gain bandwidth product, 50 pA input bias current, and 5 mV input offset voltage. The LF353DR operates within the same 7V to 36V supply range and 0°C to 70°C temperature range. It is packaged in 8-SOIC form factor and is ROHS3 compliant with MSL 1 rating. With 65,300 units in active inventory, the LF353DR provides immediate availability and design continuity.

Secondary Recommendations - Texas Instruments J-FET Variants:

The LF353M/NOPB and LF353MX/NOPB are active Texas Instruments products with enhanced gain bandwidth product (4 MHz versus 3 MHz) and identical input characteristics. Both maintain J-FET topology and dual-channel configuration in 8-SOIC packaging. The minimum supply voltage requirement increases to 10V, which must be verified against application requirements. These parts are suitable for designs requiring higher bandwidth performance within the same input impedance class.

Alternative Recommendation - Enhanced Performance (J-FET):

The ADTL082ARZ-REEL7 (Analog Devices Inc., Active status) offers superior electrical performance with 20 V/µs slew rate, 5 MHz gain bandwidth product, and significantly lower input bias current (2 pA). It extends the operating temperature range to -40°C to 125°C and maintains J-FET input topology in 8-SOIC packaging. The minimum supply voltage is 8V. This part is suitable for applications requiring enhanced precision and extended temperature operation.

Alternative Recommendation - STMicroelectronics J-FET:

The LF353DT (STMicroelectronics, Active status) provides J-FET input topology with improved slew rate (16 V/µs) and lower input bias current (20 pA). It operates from 6V minimum supply voltage and maintains 8-SOIC packaging. This part is suitable for designs requiring lower supply voltage operation while maintaining J-FET input characteristics.

Functional Alternatives - Different Topologies:

The OP275GSZ series (Analog Devices Inc., Audio amplifier type) and LM833DT (STMicroelectronics, Audio amplifier type) provide dual-channel 8-SOIC packaging with extended supply voltage ranges and temperature ratings. These parts differ fundamentally in input topology (not J-FET) and are suitable only for applications where audio amplifier characteristics are acceptable. The NJM4558E-TE2 (Nisshinbo Micro Devices Inc., General Purpose amplifier) offers similar supply and temperature compatibility but with significantly different slew rate (1 V/µs) and input characteristics.

All recommended substitutes maintain ROHS3 compliance, MSL 1 rating, and EAR99 export classification consistent with the original LF353D.

Frequently Asked Questions (FAQ)

Q1: Can the LF353DR be used as a direct replacement for the LF353D without circuit modification?

A: Yes. The LF353DR is electrically and mechanically identical to the LF353D across all specified parameters. Both are J-FET input dual-channel operational amplifiers in 8-SOIC packaging with identical supply voltage ranges (7V to 36V), operating temperature range (0°C to 70°C), and electrical characteristics. No circuit modification is required. The primary difference is product status: LF353D is obsolete while LF353DR is active with higher inventory availability.

Q2: What is the difference between LF353M/NOPB and LF353MX/NOPB?

A: Both parts are functionally identical in electrical performance and packaging. The primary difference is packaging format: LF353M/NOPB is supplied in Tube packaging, while LF353MX/NOPB is supplied in Cut Tape (CT) & Digi-Reel® format. Both maintain J-FET input topology, dual-channel configuration, 4 MHz gain bandwidth product, and 10V to 36V supply range. Selection depends on procurement and assembly requirements.

Q3: Why does the ADTL082ARZ-REEL7 have different electrical specifications than the LF353D?

A: The ADTL082ARZ-REEL7 is a higher-performance J-FET input amplifier from Analog Devices Inc. It offers superior slew rate (20 V/µs versus 13 V/µs), higher gain bandwidth product (5 MHz versus 3 MHz), and significantly lower input bias current (2 pA versus 50 pA). These enhancements make it suitable for precision applications requiring lower noise and faster response. However, it requires minimum 8V supply voltage and operates across an extended temperature range (-40°C to 125°C). Application-level verification is necessary to confirm compatibility with existing circuit designs.

Q4: Can I use the OP275GSZ as a substitute for the LF353D?

A: The OP275GSZ is not a direct substitute. While both are dual-channel operational amplifiers in 8-SOIC packaging, the OP275GSZ is classified as an Audio amplifier type, not a J-FET input amplifier. This fundamental difference in input topology affects input impedance, input bias current (100 nA versus 50 pA), and input offset voltage (1 mV versus 5 mV). The OP275GSZ is suitable only for applications where audio amplifier characteristics are acceptable and where the different input parameters do not affect circuit performance. Application-level circuit analysis is required before substitution.

Q5: What is the minimum supply voltage requirement for each substitute part?

A: The LF353D operates from 7V minimum. Substitute parts have the following minimum supply voltage requirements: LF353DR (7V), LF353M/NOPB (10V), LF353MX/NOPB (10V), ADTL082ARZ-REEL7 (8V), LF353DT (6V), LM833DT (5V), NJM4558E-TE2 (8V), OP275GSZ variants (9V). Designs operating at 7V supply voltage are compatible with LF353DR and LF353D only. Designs requiring lower supply voltage operation should consider LF353DT (6V minimum).

Q6: Are all substitute parts ROHS3 compliant?

A: All recommended substitute parts listed in this document are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, consistent with the original LF353D. All parts maintain EAR99 export classification and HTSUS code 8542.33.0001.

Q7: Which substitute part offers the best performance improvement over the LF353D?

A: The ADTL082ARZ-REEL7 offers the most significant performance improvements: 54% higher slew rate (20 V/µs versus 13 V/µs), 67% higher gain bandwidth product (5 MHz versus 3 MHz), and 96% lower input bias current (2 pA versus 50 pA). However, it requires minimum 8V supply voltage and operates across an extended temperature range. The LF353DT provides moderate improvements (23% higher slew rate, 33% higher gain bandwidth product, 60% lower input bias current) while maintaining 6V minimum supply voltage compatibility.

Q8: What packaging options are available for substitute parts?

A: All substitute parts are available in 8-SOIC surface mount packaging. Packaging formats vary: Tube (LF353D, LF353M/NOPB, OP275GSZ), Cut Tape & Digi-Reel® (LF353DR, LF353MX/NOPB, ADTL082ARZ-REEL7, LF353DT, LM833DT, OP275GSZ-REEL, OP275GSZ-REEL7), and Tape & Reel (NJM4558E-TE2). Selection depends on assembly equipment compatibility and procurement requirements.

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