KA258D Equivalent & Substitute Parts

Part Overview

The KA258D is a general-purpose operational amplifier integrated circuit manufactured by onsemi, configured as a dual-channel amplifier in an 8-SOIC surface mount package. This device is classified as obsolete, indicating it is no longer in active production. The KA258D remains suitable for legacy system maintenance and repair applications where original specifications must be maintained. Identifying equivalent and substitute parts is necessary to ensure design continuity, support ongoing production of systems using this component, and provide alternatives when original inventory becomes unavailable.

Key Parameters

Parameter	Value
Manufacturer Part Number	KA258D
Manufacturer	onsemi
Category	Linear, Amplifiers
Amplifier Type	General Purpose
Number of Circuits	2
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Current - Input Bias	45 nA
Voltage - Input Offset	2.9 mV
Current - Supply	800µA
Current - Output / Channel	30 mA
Voltage - Supply Span (Min)	3 V
Voltage - Supply Span (Max)	32 V
Operating Temperature	-25°C ~ 85°C
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution of the KA258D is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Mechanical Compatibility:

Package type: 8-SOIC surface mount configuration
Pin count: 8 pins
Physical dimensions: 0.154" width (3.90mm) or compatible 8-SOP variants (0.173", 4.40mm width)

Electrical Compatibility:

Amplifier type: General Purpose
Number of circuits: 2 channels
Current - Input Bias: 45 nA (matching specification)
Voltage - Supply Span: Minimum 3 V, Maximum ≥ 32 V
Current - Output / Channel: ≥ 30 mA
Operating Temperature: Must encompass or exceed -25°C to 85°C range

Compliance & Status:

RoHS3 Compliance preferred for new designs
REACH Unaffected status maintained
Active product status preferred for ongoing availability

Substitute parts are grouped into two categories: direct onsemi LM2904 and LM358 series variants (pin-compatible, electrically equivalent), and alternative manufacturer options (Rohm Semiconductor BA10358F series) that meet core electrical and mechanical requirements.

Parameter Comparison

Parameter	KA258D	LM2904DR2G	LM2904VDR2G	LM358ADR2G	LM358DR2G	MC34072DR2G	NCV2904DR2G	BA10358F-E2
Manufacturer	onsemi	onsemi	onsemi	onsemi	onsemi	onsemi	onsemi	Rohm Semiconductor
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	2	2	2	2	2	2	2	2
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 (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.173", 4.40mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Current - Input Bias	45 nA	45 nA	45 nA	45 nA	45 nA	100 nA	45 nA	45 nA
Voltage - Input Offset	2.9 mV	2 mV	7 mV	2 mV	2 mV	1 mV	7 mV	2 mV
Current - Supply	800µA	800µA (x2)	1.5mA (x2)	800µA (x2)	800µA (x2)	1.9mA (x2)	1.5mA (x2)	700µA
Current - Output / Channel	30 mA	40 mA	40 mA	40 mA	40 mA	30 mA	40 mA	20 mA
Voltage - Supply Span (Min)	3 V	3 V	3 V	3 V	3 V	3 V	3 V	3 V
Voltage - Supply Span (Max)	32 V	26 V	32 V	32 V	32 V	44 V	32 V	32 V
Operating Temperature	-25°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 125°C	-40°C ~ 85°C
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Primary Substitutes (onsemi LM2904 Series):

LM2904DR2G and LM2904VDR2G are the preferred direct substitutes for the KA258D. Both are manufactured by onsemi, maintain identical pin configuration and 8-SOIC package dimensions, and provide equivalent electrical performance. LM2904VDR2G extends the operating temperature range to -40°C ~ 125°C and maintains the 32 V maximum supply voltage specification. Both variants are ROHS3 compliant and carry active product status, ensuring long-term availability and supply chain continuity.

Secondary Substitutes (onsemi LM358 Series):

LM358ADR2G and LM358DR2G are functionally equivalent general-purpose dual amplifiers in 8-SOIC packages. These devices maintain the same pin configuration and core electrical specifications as the KA258D. The operating temperature range is restricted to 0°C ~ 70°C, which may limit application in extended temperature environments. Both are ROHS3 compliant with active product status.

Alternative Manufacturer Option (Rohm Semiconductor):

BA10358F-E2 provides electrical equivalence with a slightly different package footprint (8-SOP, 0.173" width versus 0.154" width). This device maintains the 32 V maximum supply voltage and -40°C ~ 85°C operating temperature range. Current output per channel is specified at 20 mA, which is below the KA258D specification of 30 mA. BA10358F-E2 is ROHS3 compliant and actively produced.

Enhanced Performance Option (onsemi MC34072 Series):

MC34072DR2G and MC34072VDR2G offer enhanced performance characteristics including higher slew rate (13V/µs), higher gain bandwidth product (4.5 MHz), and extended supply voltage range (44 V maximum). These devices are suitable for applications requiring improved frequency response and higher output current capability. MC34072VDR2G supports the extended temperature range of -40°C ~ 125°C. Both are ROHS3 compliant and actively produced.

Automotive-Grade Option (onsemi NCV Series):

NCV2904DR2G is an automotive-qualified variant of the LM2904 series, suitable for applications requiring automotive-grade reliability. It maintains equivalent electrical specifications and supports the extended temperature range of -40°C ~ 125°C. This device is ROHS3 compliant and actively produced with high inventory availability.

Frequently Asked Questions (FAQ)

Q: Can LM2904DR2G directly replace KA258D without PCB modifications?

A: Yes. LM2904DR2G maintains identical pin configuration, 8-SOIC package dimensions (0.154", 3.90mm width), and electrical specifications. No PCB layout changes are required for direct substitution.

Q: What is the key difference between LM2904DR2G and LM2904VDR2G?

A: LM2904DR2G operates from -40°C to 85°C with a maximum supply voltage of 26 V. LM2904VDR2G operates from -40°C to 125°C with a maximum supply voltage of 32 V, matching the KA258D specification. LM2904VDR2G is preferred for applications requiring the full 32 V supply range or extended high-temperature operation.

Q: Why is BA10358F-E2 listed as a substitute if the package width differs?

A: BA10358F-E2 uses an 8-SOP package (0.173" width) versus the KA258D 8-SOIC package (0.154" width). While pin count and electrical specifications are equivalent, PCB footprint modifications are required. This substitute is suitable only when PCB redesign is acceptable.

Q: What is the significance of ROHS3 compliance for substitute selection?

A: ROHS3 compliance indicates the device meets current environmental and hazardous substance restrictions. All active substitute parts listed are ROHS3 compliant, ensuring compatibility with modern manufacturing standards and regulatory requirements. The obsolete KA258D does not carry this certification.

Q: Can MC34072DR2G be used as a drop-in replacement for KA258D?

A: MC34072DR2G is pin-compatible and package-compatible with the KA258D. However, it provides enhanced performance characteristics (higher slew rate, higher bandwidth, higher output current). While electrically superior, it may introduce different circuit behavior in applications sensitive to these parameters. Functional verification is appropriate when substituting with enhanced-performance devices.

Q: Is NCV2904DR2G suitable for non-automotive applications?

A: Yes. NCV2904DR2G is an automotive-qualified variant that exceeds standard industrial specifications. It is suitable for any application requiring the LM2904 electrical specifications and extended temperature range (-40°C ~ 125°C). The automotive qualification provides additional reliability margin for demanding environments.

Q: What is the impact of different current output specifications on substitution?

A: The KA258D specifies 30 mA output current per channel. LM2904 and LM358 variants provide 40 mA, exceeding the requirement. BA10358F-E2 provides 20 mA, which is below specification. For applications requiring the full 30 mA output current, BA10358F-E2 is not suitable. LM2904 and LM358 variants provide adequate margin.

Q: How does supply voltage range affect part selection?

A: The KA258D supports 3 V to 32 V supply range. LM2904DR2G is limited to 26 V maximum, making it unsuitable for applications requiring the full 32 V range. LM2904VDR2G, LM358 variants, NCV2904DR2G, and BA10358F-E2 all support the full 32 V specification. MC34072 variants support 44 V, providing additional margin.

Q: What inventory considerations apply to substitute selection?

A: LM358DR2G has the highest inventory availability (492,200 pcs), followed by NCV2904DR2G (655,300 pcs). LM2904VDR2G has moderate availability (48,685 pcs). MC34072 variants have lower inventory levels (2,166 to 30,100 pcs). For high-volume production, LM358DR2G or NCV2904DR2G are preferred for supply chain reliability.

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