Request Quote
(Ships tomorrow)
LM741CMX Equivalent & Substitute Parts
Part Overview
The LM741CMX is a general-purpose operational amplifier manufactured by onsemi in 8-SOIC surface mount packaging. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and production requirements. The LM741CMX serves as a foundational general-purpose amplifier suitable for a broad range of analog signal processing applications where moderate bandwidth and slew rate requirements are acceptable.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 1 | — |
| Slew Rate | 0.5 | V/µs |
| Gain Bandwidth Product | 1.5 | MHz |
| Current - Input Bias | 80 | nA |
| Voltage - Input Offset | 2 | mV |
| Current - Supply | 1.5 | mA |
| Current - Output / Channel | 25 | mA |
| Voltage - Supply Span (Min) | 10 | 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 | — |
| Product Status | Obsolete | — |
Substitute Part Grouping Explanation
Substitution of the LM741CMX is determined by electrical and mechanical compatibility across the following critical parameters:
Electrical Compatibility Criteria:
- Amplifier type classification (general-purpose versus J-FET architecture)
- Slew rate and gain bandwidth product performance envelope
- Input bias current and input offset voltage specifications
- Supply current consumption
- Output current capability
- Supply voltage range compatibility
Mechanical Compatibility Criteria:
- Package type and physical dimensions (8-SOIC form factor)
- Surface mount mounting type
- Pin count and pinout configuration
Substitute parts are grouped into two categories:
Category 1: General-Purpose Amplifier Substitutes — Parts maintaining identical general-purpose amplifier architecture with compatible electrical specifications. These include UA741CD, UA741CDR, UA741CDT, UA741CPSR, and UA741ID. These substitutes preserve the original amplifier type while offering varying product status and compliance certifications.
Category 2: J-FET Amplifier Alternatives — Parts utilizing J-FET input architecture (TL061ACD, TL061IDR, TL071ID) offering superior input bias current performance and higher slew rates. These represent functional alternatives for applications where lower input bias current or faster slew rate is beneficial, though they constitute a different amplifier topology.
Parameter Comparison
| Parameter | LM741CMX | UA741CD | UA741CDR | UA741CDT | UA741CPSR | UA741ID | UA741IDT | TL061ACD | TL061IDR | TL071ID |
|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | onsemi | Texas Instruments | Texas Instruments | STMicroelectronics | Texas Instruments | STMicroelectronics | STMicroelectronics | STMicroelectronics | Texas Instruments | STMicroelectronics |
| Amplifier Type | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | J-FET | J-FET | J-FET |
| Number of Circuits | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Slew Rate (V/µs) | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 3.5 | 3.5 | 16 |
| Gain Bandwidth Product (MHz) | 1.5 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 4 |
| Current - Input Bias (nA) | 80 | 80 | 80 | 10 | 80 | 10 | 10 | 30 | 30 | 20 |
| Voltage - Input Offset (mV) | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 3 | 3 |
| Current - Supply (mA) | 1.5 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 0.2 | 0.2 | 1.4 |
| Current - Output / Channel (mA) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 20 | 20 | 40 |
| Voltage - Supply Span Min (V) | 10 | 7 | 7 | 10 | 7 | 10 | 10 | 6 | 7 | 6 |
| Voltage - Supply Span Max (V) | 36 | 36 | 36 | 44 | 36 | 44 | 44 | 36 | 36 | 36 |
| Operating Temperature (°C) | 0 to 70 | 0 to 70 | 0 to 70 | 0 to 70 | 0 to 70 | -40 to 105 | -40 to 105 | 0 to 70 | -40 to 85 | -40 to 105 |
| Package / Case | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.209", 5.30mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) |
| Product Status | Obsolete | Last Time Buy | Active | Active | Last Time Buy | Active | Active | Obsolete | Active | Obsolete |
| RoHS Status | Not Specified | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
Primary Substitutes for Direct Replacement:
The UA741CDR and UA741IDT represent the preferred substitutes for the obsolete LM741CMX. Both maintain general-purpose amplifier architecture with compatible electrical specifications and active product status. UA741CDR (Texas Instruments) offers immediate availability with ROHS3 compliance and active production status. UA741IDT (STMicroelectronics) provides extended operating temperature range (-40°C to 105°C) and superior input bias current performance (10 nA versus 80 nA), with active product status and ROHS3 compliance.
Secondary Substitutes:
UA741CD and UA741CPSR are classified as Last Time Buy, indicating limited future availability. These parts maintain electrical compatibility but should be considered only when primary substitutes are unavailable. UA741ID offers active status with extended temperature range but is available in limited quantities (1,323 pcs).
Alternative Topology Consideration:
TL061IDR (Texas Instruments, Active status) provides J-FET input architecture with significantly lower input bias current (30 pA) and higher slew rate (3.5 V/µs). This substitute is appropriate for applications requiring superior input impedance characteristics. TL071ID (STMicroelectronics, Obsolete status) offers the highest slew rate (16 V/µs) and gain bandwidth product (4 MHz) among available substitutes, suitable for applications demanding faster transient response.
Packaging Consideration:
UA741CPSR utilizes 8-SO packaging (0.209", 5.30mm width) versus the standard 8-SOIC (0.154", 3.90mm width) of the LM741CMX. This dimensional difference requires PCB layout verification before implementation.
Compliance and Regulatory Status:
All recommended substitutes carry ROHS3 compliance certification and REACH Unaffected status, matching the regulatory profile of the original component. All parts maintain EAR99 export classification and identical HTSUS commodity codes.
Frequently Asked Questions (FAQ)
Q: Can UA741CDR directly replace LM741CMX without circuit modification?
A: Yes. UA741CDR maintains identical general-purpose amplifier architecture, compatible supply voltage range (7–36 V versus 10–36 V), matching output current capability (25 mA), and equivalent slew rate (0.5 V/µs). Pin configuration and functional behavior are identical. Verify PCB layout accommodates the 8-SOIC (0.154", 3.90mm) package footprint.
Q: What is the primary advantage of UA741IDT over UA741CDR?
A: UA741IDT provides extended operating temperature range (-40°C to 105°C versus 0°C to 70°C) and superior input bias current performance (10 nA versus 80 nA). Supply voltage range is also extended (10–44 V versus 7–36 V). Both maintain identical slew rate and gain bandwidth product specifications.
Q: Why are TL061 and TL071 series listed as alternatives rather than direct substitutes?
A: TL061 and TL071 devices utilize J-FET input architecture rather than general-purpose bipolar design. This topology change results in dramatically different input bias current (30 pA and 20 pA respectively versus 80 nA) and higher slew rates (3.5 V/µs and 16 V/µs versus 0.5 V/µs). These represent functional alternatives for applications where input impedance or transient response is critical, not direct pin-compatible replacements.
Q: Is UA741CPSR compatible with standard LM741CMX PCB layouts?
A: UA741CPSR is electrically compatible but physically incompatible. The 8-SO package (0.209", 5.30mm width) differs from the standard 8-SOIC package (0.154", 3.90mm width) of the LM741CMX. PCB footprint modification is required. Use only when standard 8-SOIC alternatives are unavailable.
Q: Which substitute offers the best long-term availability?
A: UA741CDR (Texas Instruments) and UA741IDT (STMicroelectronics) both carry Active product status, indicating ongoing production and long-term availability. UA741CDR is recommended as the primary choice due to highest inventory levels (35,300 pcs) and established supply chain presence.
Q: Are all substitutes ROHS3 compliant?
A: All listed substitutes carry ROHS3 compliance certification. The original LM741CMX does not specify RoHS status. All substitutes maintain REACH Unaffected status and EAR99 export classification, ensuring regulatory equivalence.
Q: What is the impact of lower input bias current in UA741IDT?
A: Lower input bias current (10 nA versus 80 nA) reduces input offset current effects and improves performance in high-impedance signal conditioning circuits. This represents an improvement over the original LM741CMX specification and does not introduce compatibility issues.
Q: Can TL071ID be used in applications requiring the original LM741CMX specifications?
A: TL071ID is functionally superior in transient response (16 V/µs slew rate, 4 MHz bandwidth) but represents a different amplifier topology. It is suitable for applications where faster response is beneficial. However, TL071ID is classified as Obsolete, limiting future availability. For new designs, use Active-status substitutes (UA741CDR or UA741IDT).
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts