LM833D Equivalent & Substitute Parts Reference

Part Overview

The LM833D is a dual-channel audio amplifier integrated circuit manufactured by Texas Instruments in 8-SOIC surface mount packaging. This device is classified as Last Time Buy, indicating discontinued production with limited remaining inventory (9131 pcs). The LM833D operates across a wide supply voltage range (10V to 36V) and is suitable for audio frequency applications requiring dual-channel amplification with moderate gain-bandwidth characteristics.

Substitute parts are necessary due to the Last Time Buy status of the LM833D. Alternative components with equivalent or superior electrical performance and compatible packaging enable continued system design and production without dependency on obsolete inventory.

Key Parameters

Parameter	Value	Unit
Amplifier Type	Audio	—
Number of Circuits	2	Channels
Slew Rate	7	V/µs
Gain Bandwidth Product	16	MHz
Current - Input Bias	300	nA
Voltage - Input Offset	150	µV
Current - Supply (per channel)	2.05	mA
Current - Output / Channel	37	mA
Voltage - Supply Span (Min)	10	V
Voltage - Supply Span (Max)	36	V
Operating Temperature Range	-40 to 85	°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

Substitute parts for the LM833D are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Compatibility Parameters:

Package / Case: 8-SOIC (0.154", 3.90mm Width) — all substitutes maintain identical physical footprint
Mounting Type: Surface Mount — all substitutes use surface mount technology
Number of Circuits: 2 — all substitutes provide dual-channel configuration
Supply Voltage Range: Minimum 10V and Maximum 36V — substitutes must operate within or encompass this range
Operating Temperature: -40°C to 85°C — substitutes must support this industrial temperature range or broader
RoHS3 Compliance and MSL 1 rating — all substitutes meet these regulatory requirements

Electrical Performance Parameters:

Slew Rate: 7V/µs (baseline reference)
Gain Bandwidth Product: 16 MHz (baseline reference)
Input Bias Current: 300 nA (baseline reference)
Input Offset Voltage: 150 µV (baseline reference)
Output Current per Channel: 37 mA (baseline reference)

Substitutes are classified into two categories:

Category 1: Direct Audio Amplifier Substitutes — LM833DR, LM833DR2G, MC33078DT, MC33078YDT, MC34072DR2G. These maintain audio amplifier topology with electrical parameters closely aligned to the LM833D.

Category 2: Alternative Amplifier Architecture Substitutes — AD746JRZ (J-FET topology), LT1355CS8#PBF, LT1355CS8#TR, LT1355CS8#TRPBF (Voltage Feedback topology). These provide alternative amplifier architectures with different electrical characteristics but compatible package and supply specifications.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA)	Input Offset (µV)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Product Status	Packaging
LM833D	Texas Instruments	Audio	7	16	300	150	37	10	36	-40 to 85	Last Time Buy	Tube
LM833DR	Texas Instruments	Audio	7	16	300	150	37	10	36	-40 to 85	Active	Cut Tape & Digi-Reel
LM833DR2G	onsemi	Audio	7	15	300	300	29	10	36	-40 to 85	Active	Tape & Reel
MC33078DT	STMicroelectronics	General Purpose	7	15	250	150	37	5	30	-40 to 105	Active	Cut Tape & Digi-Reel
MC33078YDT	STMicroelectronics	General Purpose	7	15	250	150	37	5	30	-40 to 105	Active	Cut Tape & Digi-Reel
MC34072DR2G	onsemi	General Purpose	13	4.5	100	1000	30	3	44	0 to 70	Active	Cut Tape & Digi-Reel
AD746JRZ	Analog Devices Inc.	J-FET	75	13	0.11	300	25	9	36	0 to 70	Active	Tube
LT1355CS8#PBF	Analog Devices Inc.	Voltage Feedback	400	12	80	300	30	5	30	0 to 70	Active	Tube
LT1355CS8#TR	Analog Devices Inc.	Voltage Feedback	400	12	80	300	30	5	30	0 to 70	Active	—
LT1355CS8#TRPBF	Analog Devices Inc.	Voltage Feedback	400	12	80	300	30	5	30	0 to 70	Active	Cut Tape & Digi-Reel

Engineering Selection Recommendations

Primary Recommendation: LM833DR

The LM833DR is the direct equivalent of the LM833D, manufactured by Texas Instruments with identical electrical specifications and Active product status. This part provides seamless substitution with no circuit redesign required. The LM833DR differs only in packaging format (Cut Tape & Digi-Reel versus Tube), which does not affect electrical performance or PCB assembly compatibility. Current inventory of 1823 pcs supports production requirements.

Secondary Recommendation: LM833DR2G

The LM833DR2G, manufactured by onsemi, maintains the LM833 base product number with audio amplifier topology and -40°C to 85°C operating range. Electrical parameters remain within acceptable tolerance: Slew Rate 7V/µs, Gain Bandwidth Product 15 MHz (versus 16 MHz), Input Offset Voltage 300 µV (versus 150 µV), and Output Current 29 mA (versus 37 mA). This part is Active with substantial inventory (45855 pcs) and is suitable for applications where minor parameter variations are acceptable.

Tertiary Recommendation: MC33078DT or MC33078YDT

The MC33078 series (STMicroelectronics) provides general-purpose amplifier topology with identical Slew Rate (7V/µs) and Output Current (37 mA) to the LM833D. Both variants are Active with extended operating temperature range (-40°C to 105°C) and automotive qualification (AEC-Q100). The MC33078YDT variant has lower inventory (7800 pcs) compared to MC33078DT (133465 pcs). Supply voltage range is reduced to 5V–30V, which encompasses the LM833D minimum requirement but does not extend to 36V maximum.

Alternative Recommendation: MC34072DR2G

The MC34072DR2G (onsemi) offers extended supply voltage range (3V–44V) and higher Slew Rate (13V/µs) but with reduced Gain Bandwidth Product (4.5 MHz versus 16 MHz) and significantly higher Input Offset Voltage (1 mV versus 150 µV). Operating temperature range is limited to 0°C–70°C. This part is suitable only for applications where the LM833D's full bandwidth is not required and operating temperature does not extend below 0°C.

Specialized Alternative: AD746JRZ

The AD746JRZ (Analog Devices Inc.) employs J-FET input topology with exceptional input bias current (0.11 nA versus 300 nA) and very high Slew Rate (75V/µs). However, operating temperature range is limited to 0°C–70°C, and Output Current per channel is reduced to 25 mA. This part is suitable for low-bias-current applications but not for full industrial temperature range requirements.

High-Performance Alternative: LT1355CS8 Series

The LT1355CS8#PBF, LT1355CS8#TR, and LT1355CS8#TRPBF (Analog Devices Inc.) employ voltage feedback topology with exceptional Slew Rate (400V/µs) and lower supply current (1 mA per channel pair versus 2.05 mA). Supply voltage range is reduced to 5V–30V, and operating temperature is limited to 0°C–70°C. These parts are suitable for high-speed applications but not for extended industrial temperature range or maximum supply voltage (36V) requirements.

Compliance and Regulatory Status:

All recommended substitutes maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the LM833D regulatory profile. All parts are classified as EAR99 for export control purposes and are REACH Unaffected.

Frequently Asked Questions (FAQ)

Q1: Can LM833DR be used as a direct replacement for LM833D without circuit modification?

A: Yes. The LM833DR is electrically identical to the LM833D with matching specifications across all critical parameters: Slew Rate (7V/µs), Gain Bandwidth Product (16 MHz), Input Bias Current (300 nA), Input Offset Voltage (150 µV), Output Current (37 mA), and Supply Voltage Range (10V–36V). The only difference is packaging format (Cut Tape & Digi-Reel versus Tube), which does not affect circuit performance or PCB assembly compatibility. No redesign is required.

Q2: What is the key difference between LM833DR2G and LM833D?

A: The LM833DR2G maintains the same audio amplifier topology and supply voltage range as the LM833D but introduces minor parameter variations: Gain Bandwidth Product is reduced from 16 MHz to 15 MHz, Input Offset Voltage increases from 150 µV to 300 µV, and Output Current per channel decreases from 37 mA to 29 mA. These variations remain within typical audio amplifier tolerances and do not affect basic functionality in most audio applications. The LM833DR2G is manufactured by onsemi and carries Active product status with high inventory availability.

Q3: Why do MC33078DT and MC33078YDT have different supply voltage maximums than LM833D?

A: The MC33078 series is specified with a maximum supply voltage of 30V, whereas the LM833D supports 36V. Both parts are internally rated for the same maximum voltage stress, but the MC33078 datasheet specifies a lower recommended operating maximum. Applications requiring operation at 36V supply voltage must use LM833D, LM833DR, or LM833DR2G. Applications operating at 30V or below can safely use MC33078 variants.

Q4: Is the AD746JRZ suitable for audio amplifier applications requiring the full -40°C to 85°C temperature range?

A: No. The AD746JRZ is specified for 0°C to 70°C operating temperature range, which does not extend to the -40°C minimum required by the LM833D. Applications requiring industrial temperature range (-40°C to 85°C) must use LM833D, LM833DR, LM833DR2G, or MC33078 variants. The AD746JRZ is suitable only for applications with 0°C to 70°C temperature requirements.

Q5: What is the primary advantage of LT1355CS8 series over LM833D?

A: The LT1355CS8 series provides significantly higher Slew Rate (400V/µs versus 7V/µs) and lower supply current consumption (1 mA per channel pair versus 2.05 mA). These characteristics make the LT1355 suitable for high-speed signal processing applications. However, the LT1355 has reduced supply voltage range (5V–30V versus 10V–36V) and limited operating temperature (0°C–70°C versus -40°C–85°C). The LT1355 is not a general-purpose replacement for LM833D but rather a specialized alternative for high-speed, narrow temperature-range applications.

Q6: Can MC34072DR2G replace LM833D in all applications?

A: No. The MC34072DR2G has significantly reduced Gain Bandwidth Product (4.5 MHz versus 16 MHz) and much higher Input Offset Voltage (1 mV versus 150 µV). Operating temperature range is limited to 0°C–70°C. The MC34072DR2G is suitable only for low-frequency applications (below 4.5 MHz) with relaxed offset voltage tolerance and operating temperature above 0°C. It is not recommended as a general replacement for LM833D.

Q7: Are all substitute parts RoHS3 compliant and MSL 1 rated?

A: Yes. All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the LM833D regulatory profile. This ensures compatibility with modern manufacturing processes and environmental regulations without additional qualification requirements.

Q8: What packaging options are available for LM833 audio amplifiers?

A: The LM833D is supplied in Tube packaging. The LM833DR is available in Cut Tape & Digi-Reel format. The LM833DR2G is supplied in Tape & Reel format. All three variants use identical 8-SOIC (0.154", 3.90mm Width) physical package, ensuring PCB footprint compatibility. Packaging format selection depends on assembly process requirements (manual versus automated) and does not affect electrical performance.

Q9: Which substitute part has the highest current inventory?

A: The MC33078DT has the highest current inventory at 133465 pcs. The LT1355CS8#TRPBF has 50300 pcs, and LM833DR2G has 45855 pcs. The LM833D itself has 9131 pcs remaining (Last Time Buy status). Inventory levels should be verified with the supplier for current availability.

Q10: Can substitute parts be mixed in the same circuit board design?

A: Yes, provided all parts meet the circuit's electrical requirements. However, mixing different amplifier types (audio, general-purpose, J-FET, voltage feedback) in the same design may introduce performance variations due to different input impedance, offset voltage, and slew rate characteristics. Best practice is to standardize on a single substitute part number per design to ensure consistent performance across all channels and production batches.

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