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1025R-74K Equivalent & Substitute Parts
Part Overview
The 1025R-74K is a fixed inductor manufactured by API Delevan Inc., classified as a 180 µH unshielded molded inductor with axial through-hole mounting. This component is designed for applications requiring stable inductance values with moderate current handling capabilities. The part is currently in active production status with full RoHS3 compliance and REACH unaffected certification. Substitute parts are identified when equivalent electrical and mechanical specifications can satisfy the same circuit requirements while maintaining compatibility with the original design parameters.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 180 µH |
| Inductance Tolerance | ±10% |
| Current Rating | 57 mA |
| DC Resistance (DCR) | 17 Ohm Max |
| Q @ Frequency | 30 @ 790 kHz |
| Frequency - Self Resonant | 10 MHz |
| Operating Temperature Range | -55°C ~ 105°C |
| Mounting Type | Through Hole |
| Package / Case | Axial |
| Size / Dimension | 0.095" Dia x 0.250" L (2.41mm x 6.35mm) |
| Material - Core | Ferrite |
| Shielding | Unshielded |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
The 9230-74-RC from Bourns Inc. qualifies as a direct substitute based on the following critical parameters:
- Inductance value: 180 µH (identical)
- Inductance tolerance: ±10% (identical)
- DC resistance: 17 Ohm Max (identical)
- Q @ Frequency: 30 @ 790 kHz (identical)
- Self-resonant frequency: 10 MHz (identical)
- Mounting type: Through Hole (identical)
- Package / Case: Axial (identical)
- Physical dimensions: 0.095" Dia x 0.250" L (identical)
- Core material: Ferrite (identical)
- Shielding: Unshielded (identical)
- RoHS Status: ROHS3 Compliant (identical)
The substitute part demonstrates higher current rating capability (79 mA versus 57 mA) and extended upper operating temperature limit (125°C versus 105°C), making it suitable for applications where the original part is specified.
Parameter Comparison
| Parameter | 1025R-74K (API Delevan) | 9230-74-RC (Bourns) |
|---|---|---|
| Inductance | 180 µH | 180 µH |
| Inductance Tolerance | ±10% | ±10% |
| Current Rating (Amps) | 57 mA | 79 mA |
| DC Resistance (DCR) | 17 Ohm Max | 17 Ohm Max |
| Q @ Frequency | 30 @ 790 kHz | 30 @ 790 kHz |
| Frequency - Self Resonant | 10 MHz | 10 MHz |
| Operating Temperature Range | -55°C ~ 105°C | -55°C ~ 125°C |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | Axial | Axial |
| Size / Dimension | 0.095" Dia x 0.250" L | 0.095" Dia x 0.250" L |
| Material - Core | Ferrite | Ferrite |
| Shielding | Unshielded | Unshielded |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
Both the 1025R-74K and 9230-74-RC are active production components with full RoHS3 compliance and REACH unaffected status. The 9230-74-RC provides equivalent electrical performance with enhanced current handling capacity and extended temperature range. Selection between these parts depends on circuit current requirements and thermal operating conditions. Both components satisfy identical inductance, tolerance, impedance, and frequency specifications required for direct substitution in axial through-hole applications.
Frequently Asked Questions (FAQ)
Q: Can the 9230-74-RC replace the 1025R-74K in all applications?
A: The 9230-74-RC is electrically and mechanically compatible with the 1025R-74K. Both parts share identical inductance (180 µH), tolerance (±10%), DC resistance (17 Ohm Max), Q factor (30 @ 790 kHz), self-resonant frequency (10 MHz), and physical dimensions (0.095" Dia x 0.250" L). The substitute part offers higher current rating (79 mA versus 57 mA) and extended operating temperature range (-55°C to 125°C versus -55°C to 105°C).
Q: Are there any package or mounting differences between these parts?
A: No. Both parts use identical through-hole axial mounting with matching physical dimensions of 0.095" diameter by 0.250" length (2.41mm x 6.35mm). Direct board-level substitution is supported without layout modifications.
Q: Do both parts meet the same compliance standards?
A: Yes. Both the 1025R-74K and 9230-74-RC are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements for electronic component applications.
Q: What is the primary difference between these inductors?
A: The primary differences are current rating capacity and maximum operating temperature. The 9230-74-RC supports 79 mA continuous current compared to 57 mA for the 1025R-74K, and operates to 125°C versus 105°C for the original part.
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