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KA358ADTF Equivalent & Substitute Parts
Part Overview
The KA358ADTF is a general-purpose operational amplifier featuring two circuits in an 8-SOIC surface mount package, manufactured by onsemi. This device is classified as obsolete, which necessitates identification of active equivalent and substitute components for ongoing design requirements and production continuity. The KA358ADTF 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 mV, making it suitable for general-purpose amplification applications requiring low-power operation.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Amplifier Type | General Purpose |
| Number of Circuits | 2 |
| Current - Input Bias | 45 nA |
| Voltage - Input Offset | 2 mV |
| Current - Supply | 800 µA |
| Current - Output / Channel | 30 mA |
| Voltage - Supply Span (Min) | 3 V |
| Voltage - Supply Span (Max) | 32 V |
| Operating Temperature | 0°C ~ 70°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
Substitution of the KA358ADTF is determined by strict alignment of the following electrical and mechanical parameters:
Critical Matching Parameters:
- Package type: 8-SOIC form factor (0.154", 3.90mm Width)
- Number of circuits: 2 operational amplifiers per package
- Amplifier classification: General Purpose
- Input bias current: 45 nA
- Input offset voltage: 2 mV (primary specification)
- Supply voltage range: Minimum 3V, Maximum 32V
- Output current per channel: 30 mA or greater
- Mounting type: Surface Mount
- RoHS3 compliance and MSL Level 1 rating
Substitute parts are grouped into two categories: onsemi-manufactured direct equivalents (LM258DR2G, LM2904DR2G, LM2904VDR2G, LM358DR2G) and alternative manufacturer options (MC34072 series, NCV2904DR2G, UMW LM358ADR, Texas Instruments LM358AM/NOPB). All listed substitutes maintain the 8-SOIC package, dual-circuit configuration, and core electrical specifications required for functional replacement.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Input Bias (nA) | Input Offset (mV) | Supply Current (µA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|
| KA358ADTF | onsemi | Obsolete | 45 | 2 | 800 | 30 | 3 | 32 | 0 ~ 70 | 8-SOIC |
| LM258DR2G | onsemi | Active | 45 | 2 | 800 | 40 | 3 | 32 | -25 ~ 85 | 8-SOIC |
| LM2904DR2G | onsemi | Active | 45 | 2 | 800 | 40 | 3 | 26 | -40 ~ 85 | 8-SOIC |
| LM2904VDR2G | onsemi | Active | 45 | 7 | 1500 | 40 | 3 | 32 | -40 ~ 125 | 8-SOIC |
| LM358DR2G | onsemi | Active | 45 | 2 | 800 | 40 | 3 | 32 | 0 ~ 70 | 8-SOIC |
| MC34072ADR2G | onsemi | Active | 100 | 0.5 | 1900 | 30 | 3 | 44 | 0 ~ 70 | 8-SOIC |
| MC34072DR2G | onsemi | Active | 100 | 1 | 1900 | 30 | 3 | 44 | 0 ~ 70 | 8-SOIC |
| MC34072VDR2G | onsemi | Active | 100 | 1 | 1900 | 30 | 3 | 44 | -40 ~ 125 | 8-SOIC |
| NCV2904DR2G | onsemi | Active | 45 | 7 | 1500 | 40 | 3 | 32 | -40 ~ 125 | 8-SOIC |
| LM358ADR | UMW | Active | 45 | 2 | 1000 | 40 | — | 36 | -25 ~ 85 | 8-SOIC |
| LM358AM/NOPB | Texas Instruments | Active | 45 | 2 | 1000 | 40 | 3 | 32 | 0 ~ 70 | 8-SOIC |
Engineering Selection Recommendations
Primary Substitutes (Highest Compatibility):
The LM358DR2G and LM358AM/NOPB represent the most direct functional replacements for the KA358ADTF. Both devices maintain identical input bias current (45 nA), input offset voltage (2 mV), supply voltage range (3V to 32V), and operating temperature range (0°C to 70°C) as the original part. LM358DR2G is manufactured by onsemi and carries active product status with ROHS3 compliance and MSL Level 1 rating. LM358AM/NOPB is manufactured by Texas Instruments, also active with equivalent compliance certifications. Both are available in 8-SOIC packaging with dual-circuit configuration.
Secondary Substitutes (Extended Operating Range):
The LM258DR2G offers identical electrical specifications to the KA358ADTF with the advantage of extended operating temperature range (-25°C to 85°C) and higher output current capability (40 mA versus 30 mA). This part is suitable for applications requiring broader temperature performance while maintaining the same input characteristics and supply voltage range.
Alternative Substitutes (Enhanced Performance):
The MC34072 series (ADR2G, DR2G, VDR2G variants) provides enhanced performance characteristics including higher input offset voltage accuracy (500 µV to 1 mV), increased gain-bandwidth product (4.5 MHz), and higher slew rate (13V/µs). These parts support extended supply voltage range up to 44V and are suitable for applications requiring improved precision and bandwidth. The MC34072VDR2G extends operating temperature to -40°C to 125°C.
Extended Temperature Variants:
The LM2904VDR2G and NCV2904DR2G provide extended operating temperature range (-40°C to 125°C) with maintained input bias current (45 nA) and supply voltage compatibility (3V to 32V). These variants are appropriate for industrial and automotive applications requiring wider temperature performance. Note that LM2904VDR2G specifies 7 mV input offset voltage, while NCV2904DR2G maintains the same specification.
All recommended substitutes maintain ROHS3 compliance, MSL Level 1 rating, and surface mount 8-SOIC packaging. Product status verification confirms active manufacturing availability for all listed alternatives.
Frequently Asked Questions (FAQ)
Q: Can the LM358DR2G directly replace the KA358ADTF in existing designs?
A: Yes. The LM358DR2G maintains identical input bias current (45 nA), input offset voltage (2 mV), supply voltage range (3V to 32V), and operating temperature range (0°C to 70°C) as the KA358ADTF. Both devices feature dual operational amplifiers in 8-SOIC packaging with 30 mA minimum output current per channel. No circuit modifications are required for functional replacement.
Q: What is the primary difference between LM258DR2G and LM358DR2G?
A: Both parts share identical electrical specifications (45 nA input bias, 2 mV input offset, 3V to 32V supply range). The LM258DR2G provides extended operating temperature range (-25°C to 85°C) compared to the LM358DR2G (0°C to 70°C). Selection depends on application temperature requirements.
Q: Why do some substitutes specify higher input offset voltage (7 mV)?
A: The LM2904VDR2G and NCV2904DR2G specify 7 mV input offset voltage compared to the KA358ADTF specification of 2 mV. These parts are functionally compatible but exhibit different input offset characteristics. Applications sensitive to input offset voltage should verify compatibility with circuit design specifications before substitution.
Q: Are the MC34072 series parts suitable replacements for the KA358ADTF?
A: The MC34072 series (ADR2G, DR2G, VDR2G) are compatible substitutes with enhanced performance characteristics. These parts feature higher gain-bandwidth product (4.5 MHz versus unspecified for KA358ADTF), improved input offset voltage accuracy (500 µV to 1 mV), and higher slew rate (13V/µs). Supply voltage range extends to 44V. Applications requiring standard performance can use these parts; applications requiring exact input offset voltage matching (2 mV) should verify compatibility.
Q: What is the significance of the "V" designation in part numbers like LM2904VDR2G?
A: The "V" designation indicates extended operating temperature range (-40°C to 125°C) compared to standard temperature variants. This extended range is suitable for industrial, automotive, and harsh environment applications. Standard variants without the "V" designation typically operate within 0°C to 70°C or -25°C to 85°C ranges.
Q: Can I use the UMW LM358ADR as a substitute?
A: Yes. The UMW LM358ADR maintains the required electrical specifications (45 nA input bias, 2 mV input offset, 40 mA output current) and 8-SOIC packaging. Operating temperature range is -25°C to 85°C. This part is manufactured by UMW and carries ROHS3 compliance. Verify supply voltage minimum specification in application requirements, as this parameter is not fully specified in available documentation.
Q: Are all substitute parts available in the same packaging?
A: Yes. All listed substitute parts are available in 8-SOIC (0.154", 3.90mm Width) surface mount packaging, maintaining mechanical compatibility with the KA358ADTF. Mounting footprints and PCB layout requirements remain identical across all substitutes.
Q: What compliance certifications apply to all substitute parts?
A: All substitute parts listed maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited) rating. REACH status is unaffected for onsemi and Texas Instruments manufactured parts. ECCN classification is EAR99 for all components. These certifications ensure regulatory compliance for commercial and industrial applications.
Q: Which substitute offers the best inventory availability?
A: The NCV2904DR2G provides the highest inventory availability at 655,300 pieces in stock. The LM358DR2G and LM2904DR2G also maintain substantial inventory levels (492,200 and 505,300 pieces respectively). These high-availability options ensure supply chain continuity for production requirements.
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