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KA258DTF Equivalent & Substitute Parts
Part Overview
The KA258DTF 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, which necessitates identification of functionally equivalent substitute components for ongoing design support and production requirements. The KA258DTF operates across a supply voltage range of 3V to 32V with an input bias current of 45 nA and an input offset voltage of 2.9 mV, making it suitable for general-purpose amplification applications requiring moderate performance specifications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | KA258DTF | — |
| Manufacturer | onsemi | — |
| Category | Linear, Amplifiers | — |
| 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 | 30 | mA |
| Voltage - Supply Span (Min) | 3 | V |
| Voltage - Supply Span (Max) | 32 | V |
| Operating Temperature | -25°C ~ 85°C | — |
| Mounting Type | Surface Mount | — |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Product Status | Obsolete | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the KA258DTF is determined by strict adherence to the following electrical and mechanical parameters:
Primary Substitution Criteria:
- 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 (baseline specification)
- Voltage - Supply Span (Min): 3 V minimum
- Voltage - Supply Span (Max): 32 V maximum or greater
Secondary Compatibility Parameters:
- Current - Output / Channel: 30 mA or greater
- Current - Supply: 800 µA or less (preferred for power efficiency)
- Voltage - Input Offset: 2.9 mV or lower (preferred for accuracy)
Substitute parts are grouped into two categories based on amplifier technology and performance characteristics:
Category A: Standard CMOS/Bipolar General-Purpose Amplifiers — Parts including LM2904DR2G, LM2904VDR2G, LM358ADR2G, LM358DR2G, and NCV2904DR2G meet all primary substitution criteria with active product status and RoHS3 compliance.
Category B: Enhanced-Performance Amplifiers — Parts including MC34072ADR2G, MC34072DR2G, MC34072VDR2G, ADA4062-2BRZ, and ADA4062-2BRZ-R7 exceed baseline specifications in slew rate, gain bandwidth product, and input offset voltage, suitable for applications requiring superior performance margins.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Amplifier Type | Number of Circuits | Current - Input Bias (nA) | Voltage - Input Offset (mV) | Current - Supply (µA) | Current - Output / Channel (mA) | Voltage - Supply Span Min (V) | Voltage - Supply Span Max (V) | Operating Temperature (°C) | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KA258DTF | onsemi | Obsolete | General Purpose | 2 | 45 | 2.9 | 800 | 30 | 3 | 32 | -25 ~ 85 | 8-SOIC |
| LM2904DR2G | onsemi | Active | General Purpose | 2 | 45 | 2 | 800 | 40 | 3 | 26 | -40 ~ 85 | 8-SOIC |
| LM2904VDR2G | onsemi | Active | General Purpose | 2 | 45 | 7 | 1500 | 40 | 3 | 32 | -40 ~ 125 | 8-SOIC |
| LM358ADR2G | onsemi | Active | General Purpose | 2 | 45 | 2 | 800 | 40 | 3 | 32 | 0 ~ 70 | 8-SOIC |
| LM358DR2G | onsemi | Active | General Purpose | 2 | 45 | 2 | 800 | 40 | 3 | 32 | 0 ~ 70 | 8-SOIC |
| MC34072ADR2G | onsemi | Active | General Purpose | 2 | 100 | 0.5 | 1900 | 30 | 3 | 44 | 0 ~ 70 | 8-SOIC |
| MC34072DR2G | onsemi | Active | General Purpose | 2 | 100 | 1 | 1900 | 30 | 3 | 44 | 0 ~ 70 | 8-SOIC |
| MC34072VDR2G | onsemi | Active | General Purpose | 2 | 100 | 1 | 1900 | 30 | 3 | 44 | -40 ~ 125 | 8-SOIC |
| NCV2904DR2G | onsemi | Active | General Purpose | 2 | 45 | 7 | 1500 | 40 | 3 | 32 | -40 ~ 125 | 8-SOIC |
| ADA4062-2BRZ | Analog Devices Inc. | Active | J-FET | 2 | 0.002 | 0.5 | 165 | 20 | 8 | 36 | -40 ~ 125 | 8-SOIC |
| ADA4062-2BRZ-R7 | Analog Devices Inc. | Active | J-FET | 2 | 0.002 | 0.5 | 165 | 20 | 8 | 36 | -40 ~ 125 | 8-SOIC |
Engineering Selection Recommendations
Direct Substitutes (Category A - Recommended for Pin-Compatible Replacement):
The LM358ADR2G and LM358DR2G represent the most direct substitutes for the KA258DTF. Both devices maintain identical electrical specifications for input bias current (45 nA), supply current (800 µA), and output current per channel (40 mA). These parts feature active product status, RoHS3 compliance, and identical 8-SOIC packaging. The primary trade-off is a narrower operating temperature range (0°C to 70°C versus -25°C to 85°C), which is acceptable for most commercial and industrial applications. Both parts are available in high inventory quantities (45,400 and 492,200 units respectively), ensuring supply continuity.
The LM2904DR2G offers superior input offset voltage performance (2 mV versus 2.9 mV) and extended maximum supply voltage capability (26 V), with active product status and high inventory availability (505,300 units). This part is suitable for applications where lower offset voltage is beneficial, though the maximum supply voltage is reduced by 6 V compared to the KA258DTF.
Extended-Range Substitutes (Category A - For Enhanced Temperature Performance):
The LM2904VDR2G and NCV2904DR2G both support the full 32 V maximum supply voltage specification and extended operating temperature ranges (-40°C to 125°C). These parts accommodate applications requiring wider temperature operation. The trade-off is increased supply current (1500 µA versus 800 µA) and higher input offset voltage (7 mV). Both parts maintain active product status and RoHS3 compliance with substantial inventory availability.
Enhanced-Performance Substitutes (Category B - For Superior Performance Margins):
The MC34072ADR2G, MC34072DR2G, and MC34072VDR2G provide superior slew rate (13 V/µs), gain bandwidth product (4.5 MHz), and input offset voltage (0.5 to 1 mV). These parts support extended maximum supply voltage (44 V) and are suitable for applications requiring enhanced performance characteristics. The MC34072VDR2G extends operating temperature to -40°C to 125°C. Trade-offs include increased supply current (1900 µA) and higher input bias current (100 nA). All three parts maintain active product status and RoHS3 compliance.
Specialized Substitutes (Category B - For Ultra-Low Input Bias Current Applications):
The ADA4062-2BRZ and ADA4062-2BRZ-R7 employ J-FET input technology, delivering extremely low input bias current (2 pA) and superior input offset voltage (0.5 mV). These parts are manufactured by Analog Devices Inc. and support extended operating temperature (-40°C to 125°C). The minimum supply voltage requirement is 8 V, which exceeds the KA258DTF specification. These parts are suitable only for applications where ultra-low input bias current is a critical requirement and the 8 V minimum supply voltage is acceptable.
Compliance and Certification Status:
All substitute parts listed maintain RoHS3 compliance, REACH Unaffected status, and ECCN EAR99 classification, matching the regulatory profile of the KA258DTF. Moisture sensitivity level remains at MSL 1 (Unlimited) across all substitutes, ensuring consistent handling requirements.
Frequently Asked Questions (FAQ)
Q: Can the LM358ADR2G directly replace the KA258DTF in all applications?
A: The LM358ADR2G is electrically compatible with the KA258DTF for most applications, sharing identical input bias current (45 nA), supply current (800 µA), and output current specifications. The primary limitation is the operating temperature range, which is restricted to 0°C to 70°C compared to the KA258DTF range of -25°C to 85°C. Applications operating within the 0°C to 70°C range experience no functional restrictions. The 8-SOIC package is identical, enabling direct PCB-level substitution without layout modifications.
Q: What is the difference between LM2904DR2G and LM2904VDR2G?
A: Both parts share the same base product number (LM2904) and 8-SOIC package. The LM2904DR2G operates from -40°C to 85°C with a maximum supply voltage of 26 V and supply current of 800 µA. The LM2904VDR2G extends the operating temperature range to -40°C to 125°C, supports the full 32 V maximum supply voltage, and increases supply current to 1500 µA. The LM2904VDR2G is preferred for applications requiring extended temperature operation or the full 32 V supply voltage capability.
Q: Why do the MC34072 series parts have higher supply current than the KA258DTF?
A: The MC34072 series (MC34072ADR2G, MC34072DR2G, MC34072VDR2G) delivers enhanced performance characteristics including higher slew rate (13 V/µs versus unspecified for KA258DTF), higher gain bandwidth product (4.5 MHz), and superior input offset voltage (0.5 to 1 mV versus 2.9 mV). These performance improvements require increased quiescent current consumption (1900 µA versus 800 µA). Selection of MC34072 variants is appropriate only when the enhanced performance specifications justify the increased power consumption.
Q: Are the ADA4062-2BRZ and ADA4062-2BRZ-R7 suitable replacements for the KA258DTF?
A: The ADA4062 series employs J-FET input technology, delivering extremely low input bias current (2 pA) compared to the KA258DTF (45 nA). This technology is beneficial only for applications where ultra-low input bias current is a critical design requirement. The ADA4062 series requires a minimum supply voltage of 8 V, which exceeds the KA258DTF minimum of 3 V. Applications operating at supply voltages below 8 V cannot use the ADA4062 series. The 8-SOIC package is identical, enabling direct PCB-level substitution where voltage requirements are met.
Q: What is the significance of the "V" designation in part numbers like LM2904VDR2G?
A: The "V" designation in onsemi part numbering indicates extended operating temperature range capability. The LM2904VDR2G operates from -40°C to 125°C, compared to the standard LM2904DR2G range of -40°C to 85°C. The "V" variant is selected for applications requiring operation at elevated temperatures above 85°C or for designs requiring a single part number across extended temperature specifications.
Q: Can I use NCV2904DR2G as a direct replacement for KA258DTF?
A: The NCV2904DR2G is electrically compatible with the KA258DTF, maintaining identical input bias current (45 nA) and supporting the full 32 V supply voltage range. The NCV2904DR2G is packaged in Tape & Reel (TR) format, whereas the KA258DTF uses standard surface-mount packaging. The 8-SOIC package dimensions are identical, enabling direct PCB-level substitution. The primary differences are increased supply current (1500 µA versus 800 µA) and higher input offset voltage (7 mV versus 2.9 mV). The NCV2904DR2G is suitable for applications where extended temperature operation (-40°C to 125°C) is required and the increased supply current is acceptable.
Q: What packaging format differences exist among the substitute parts?
A: Substitute parts are available in three packaging formats: Cut Tape (CT) & Digi-Reel® (LM2904DR2G, LM2904VDR2G, LM358ADR2G, LM358DR2G, MC34072ADR2G, MC34072DR2G, MC34072VDR2G), Tape & Reel (TR) (NCV2904DR2G), and Tube (ADA4062-2BRZ). All parts use identical 8-SOIC (0.154", 3.90mm Width) case dimensions, ensuring PCB-level compatibility. Packaging format selection is determined by production volume and assembly equipment compatibility rather than electrical performance.
Q: How do I determine which substitute part is appropriate for my application?
A: Substitute selection is determined by three primary criteria: (1) operating temperature range requirements, (2) supply voltage range requirements, and (3) performance specifications (input offset voltage, slew rate, gain bandwidth product). For applications operating within 0°C to 70°C with supply voltages up to 32 V and standard performance requirements, the LM358ADR2G or LM358DR2G are recommended. For extended temperature operation (-40°C to 125°C), select LM2904VDR2G or NCV2904DR2G. For applications requiring enhanced performance (lower offset voltage, higher slew rate), select MC34072 series variants. For ultra-low input bias current applications, select ADA4062 series variants with verification that the 8 V minimum supply voltage is acceptable.
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