LM258N Equivalent & Substitute Parts

Part Overview

The LM258N is a general-purpose operational amplifier featuring two independent circuits in an 8-DIP through-hole package, manufactured by onsemi. This device is classified as obsolete, though 1,362 units remain in stock as new original inventory. The LM258N operates across a wide supply voltage range of 3V to 32V and maintains stable performance across an operating temperature range of -25°C to 85°C. Due to its obsolete status, identifying equivalent and substitute parts is essential for ongoing design support, production continuity, and long-term component availability.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Current - Input Bias	45	nA
Voltage - Input Offset	2.9	mV
Current - Supply	800	µA
Current - Output / Channel	40	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	32	V
Operating Temperature	-25°C ~ 85°C	—
Package / Case	8-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LM258N is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Electrical Compatibility:

Amplifier type classification (General Purpose)
Number of circuits (2 independent amplifiers)
Supply voltage range compatibility (minimum 3V, maximum 32V or higher)
Input bias current tolerance (45 nA nominal)
Input offset voltage tolerance (2.9 mV nominal)
Output current capability per channel (40 mA minimum)

Mechanical Compatibility:

Package type (8-DIP through-hole for direct pin-compatible substitution)
Pin count (8 pins)
Physical dimensions (0.300" width, 7.62mm standard DIP spacing)

Operational Compatibility:

Operating temperature range (-25°C to 85°C minimum coverage)
Product status (Active preferred for long-term availability; Obsolete acceptable for legacy applications)

Substitute parts are grouped into two categories: Direct Pin-Compatible Substitutes (same 8-DIP package) and Functional Equivalents (same electrical performance, alternative packaging available). Parts that deviate from these core parameters are included only when they provide superior performance characteristics while maintaining backward compatibility.

Parameter Comparison

Part Number	Manufacturer	Product Status	Amplifier Type	Number of Circuits	Input Bias (nA)	Input Offset (mV)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Mounting
LM258N	onsemi	Obsolete	General Purpose	2	45	2.9	800	40	3	32	-25 ~ 85	8-DIP	Through Hole
LM258DR2G	onsemi	Active	General Purpose	2	45	2	800	40	3	32	-25 ~ 85	8-SOIC	Surface Mount
LM258P	Texas Instruments	Active	General Purpose	2	20	3	500	40	3	32	-25 ~ 85	8-DIP	Through Hole
LM258AP	Texas Instruments	Active	General Purpose	2	15	2	500	40	3	32	-25 ~ 85	8-DIP	Through Hole
AS358AP-E1	Diodes Incorporated	Active	General Purpose	2	20	2	700	40	3	36	-40 ~ 85	8-DIP	Through Hole
AS358P-E1	Diodes Incorporated	Active	General Purpose	2	20	2	700	40	3	36	-40 ~ 85	8-DIP	Through Hole
BA15218	Rohm Semiconductor	Active	General Purpose	2	50	0.5	5000	50	4	32	-40 ~ 85	8-DIP	Through Hole
CA3240AEZ	Renesas Electronics Corporation	Active	General Purpose	2	0.01	2	8000	40	4	36	-40 ~ 85	8-DIP	Through Hole
LM1458N/NOPB	Texas Instruments	Active	General Purpose	2	200	1	3000	—	36	36	0 ~ 70	8-DIP	Through Hole
AD812ANZ	Analog Devices Inc.	Active	Current Feedback	2	—	—	4500	50	2.4	36	—	8-DIP	Through Hole
AD826ANZ	Analog Devices Inc.	Active	Voltage Feedback	2	3300	0.5	6600	50	5	36	-40 ~ 85	8-DIP	Through Hole

Engineering Selection Recommendations

Direct Pin-Compatible Substitutes (8-DIP Through-Hole Package):

The following parts maintain identical pinout and package configuration, enabling direct replacement without PCB modification:

LM258P (Texas Instruments): Active product status with identical 8-DIP package. Electrical parameters align closely with LM258N specifications. Lower input bias current (20 nA vs. 45 nA) and reduced supply current (500 µA vs. 800 µA) provide improved performance margins. RoHS3 compliant. Recommended as primary substitute for new designs and production continuity.
LM258AP (Texas Instruments): Active product status with superior input bias current (15 nA) and input offset voltage (2 mV). Identical supply voltage range and output current capability. RoHS3 compliant. Suitable for applications requiring tighter input specifications.
AS358AP-E1 and AS358P-E1 (Diodes Incorporated): Active products with identical 8-DIP package. Input bias current (20 nA) and offset voltage (2 mV) meet or exceed LM258N specifications. Extended supply voltage maximum (36V vs. 32V) and expanded operating temperature range (-40°C to 85°C) provide additional design margin. RoHS3 compliant. High inventory availability (44,266 and 67,400 units respectively).
BA15218 (Rohm Semiconductor): Active product with 8-DIP package. Higher input bias current (50 nA) and supply current (5 mA) represent performance trade-offs. Minimum supply voltage increased to 4V. RoHS3 compliant. Suitable for applications with relaxed input specifications.
CA3240AEZ (Renesas Electronics Corporation): Active product with 8-DIP package. Exceptionally low input bias current (10 pA) and higher slew rate (9 V/µs) provide superior performance for precision applications. Minimum supply voltage increased to 4V. RoHS3 compliant. Recommended for high-impedance input circuits.
LM1458N/NOPB (Texas Instruments): Active product with 8-DIP package. Fixed supply voltage (36V) and narrower operating temperature range (0°C to 70°C) limit applicability. Higher input bias current (200 nA) and supply current (3 mA per channel) represent significant deviations. RoHS3 compliant. Suitable only for applications with fixed 36V supply and standard temperature operation.

Functional Equivalents (Alternative Packaging):

LM258DR2G (onsemi): Active product from original manufacturer. Identical electrical specifications to LM258N with surface-mount 8-SOIC package. Enables transition to modern manufacturing processes. RoHS3 compliant. Recommended for new PCB designs requiring surface-mount technology.

Performance-Enhanced Alternatives (Different Amplifier Architecture):

AD812ANZ (Analog Devices Inc.): Current feedback architecture with significantly higher bandwidth (145 MHz) and slew rate (1600 V/µs). Higher supply current (4.5 mA) and output current (50 mA). Suitable for high-speed applications where general-purpose amplifier performance is insufficient. RoHS3 compliant.
AD826ANZ (Analog Devices Inc.): Voltage feedback architecture with 50 MHz bandwidth and 350 V/µs slew rate. Higher input bias current (3.3 µA) and supply current (6.6 mA). Minimum supply voltage increased to 5V. Suitable for applications requiring higher bandwidth than general-purpose amplifiers. RoHS3 compliant.

Compliance and Certification:

All recommended substitutes maintain REACH Unaffected status and EAR99 export classification consistent with the LM258N. RoHS3 compliance is confirmed for all active products. Moisture sensitivity level remains at MSL 1 (Unlimited) across all substitutes, eliminating special handling requirements.

Frequently Asked Questions (FAQ)

Q: Can LM258P directly replace LM258N without PCB modification?

A: Yes. Both devices use identical 8-DIP through-hole packaging with standard 0.300" width and 7.62mm pin spacing. Pin configuration is identical. No PCB layout changes are required. Electrical parameters are compatible across the specified operating range.

Q: What is the primary difference between LM258N and LM258DR2G?

A: The LM258DR2G is the surface-mount equivalent (8-SOIC package) of the LM258N. Electrical specifications are identical. The LM258DR2G is suitable for modern PCB designs using surface-mount assembly processes. The LM258N remains the through-hole option for legacy designs and manual assembly applications.

Q: Are all substitute parts RoHS3 compliant?

A: All active substitute parts listed are RoHS3 compliant. The original LM258N does not carry RoHS certification due to its obsolete status. Compliance certification is available for all recommended active alternatives.

Q: Which substitute offers the lowest input bias current?

A: The CA3240AEZ provides the lowest input bias current at 10 pA, compared to 45 nA for the LM258N. This characteristic is beneficial for high-impedance input circuits where input bias current leakage must be minimized. The CA3240AEZ maintains identical 8-DIP packaging and is RoHS3 compliant.

Q: Can I use AD812ANZ or AD826ANZ as direct replacements?

A: AD812ANZ and AD826ANZ are not direct functional replacements. AD812ANZ uses current feedback architecture with significantly higher bandwidth (145 MHz) and slew rate (1600 V/µs), making it suitable only for high-speed applications. AD826ANZ uses voltage feedback architecture with 50 MHz bandwidth. Both devices have different electrical characteristics and are intended for applications requiring performance beyond general-purpose amplifier specifications. Pin compatibility is maintained (8-DIP package), but circuit behavior will differ.

Q: What is the operating temperature range difference between LM258N and AS358AP-E1?

A: The LM258N operates from -25°C to 85°C. The AS358AP-E1 operates from -40°C to 85°C, providing extended low-temperature performance. This extended range is beneficial for applications in industrial or outdoor environments requiring operation below -25°C.

Q: Is LM1458N/NOPB suitable as a substitute?

A: LM1458N/NOPB is a pin-compatible 8-DIP device but has significant limitations. It operates only at fixed 36V supply voltage (not variable 3V to 32V range) and has a narrower temperature range (0°C to 70°C vs. -25°C to 85°C). Input bias current is substantially higher (200 nA vs. 45 nA). This device is suitable only for applications with fixed 36V supply and standard temperature operation.

Q: What inventory availability should I consider for production planning?

A: LM258N has 1,362 units in stock. Among active substitutes, AS358P-E1 offers the highest inventory (67,400 units), followed by AS358AP-E1 (44,266 units) and LM258P (34,988 units). For long-term production continuity, LM258P or AS358 variants are recommended due to superior inventory levels and active product status.

Q: Are there supply voltage compatibility concerns with any substitute?

A: Most substitutes maintain the 3V minimum supply voltage. However, BA15218 and CA3240AEZ require minimum 4V supply. AD826ANZ requires minimum 5V supply. If your application operates below 4V, select from LM258P, LM258AP, AS358AP-E1, AS358P-E1, or LM1458N/NOPB. Verify your specific supply voltage requirements before selection.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 (Unlimited) indicates that the component has unlimited shelf life and does not require special moisture-controlled storage or handling. This applies to all listed substitutes and the original LM258N, eliminating special storage, baking, or desiccant requirements during manufacturing and assembly.

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