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Bourns 9250-564-RC Equivalent & Substitute Parts
Part Overview
The Bourns 9250-564-RC is a 560 µH shielded drum core wirewound inductor rated for 90 mA with a maximum DC resistance of 10.5 Ohm. This through-hole axial component operates across -55°C to 105°C and is designed for applications requiring electromagnetic shielding and stable inductance characteristics at 790 kHz test frequency.
The 9250-564-RC has reached obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 560 µH |
| Tolerance | ±10% |
| Current Rating | 90 mA |
| DC Resistance (Max) | 10.5 Ohm |
| Shielding | Shielded |
| Core Material | Ferrite |
| Mounting Type | Through Hole |
| Package | Axial |
| Size | 0.162" Dia x 0.410" L (4.11mm x 10.41mm) |
| Operating Temperature | -55°C to 105°C |
| Q @ 790 kHz | 60 |
| Self Resonant Frequency | 4.7 MHz |
Substitute Part Grouping Explanation
Substitute parts for the 9250-564-RC are grouped based on the following critical parameters that determine functional equivalence:
Primary Matching Criteria:
- Inductance value: 560 µH ±10%
- Current rating: 90 mA minimum
- DC resistance: 10.5 Ohm maximum
- Core material: Ferrite
- Mounting type: Through hole axial
- Physical dimensions: 0.162" Dia x 0.410" L
- Shielding requirement: Shielded (for primary substitutes)
- Q factor and self-resonant frequency characteristics
Substitution Categories:
Direct Manufacturer Equivalent: The Bourns 9250A-564-RC represents the active production successor to the 9250-564-RC, maintaining identical electrical specifications while transitioning from drum core to molded construction. This part is the primary replacement option.
Similar Manufacturer Alternatives: The API Delevan ER1641 series (ER1641-564KM, ER1641-564KP, ER1641-564KR) provides functional equivalence across all critical electrical parameters. These parts differ in shielding configuration and compliance certifications but maintain the same inductance, current rating, DC resistance, and physical form factor.
Parameter Comparison
| Parameter | 9250-564-RC (Main) | 9250A-564-RC | ER1641-564KM | ER1641-564KP | ER1641-564KR |
|---|---|---|---|---|---|
| Manufacturer | Bourns Inc. | Bourns Inc. | API Delevan Inc. | API Delevan Inc. | API Delevan Inc. |
| Inductance | 560 µH | 560 µH | 560 µH | 560 µH | 560 µH |
| Tolerance | ±10% | ±10% | ±10% | ±10% | ±10% |
| Current Rating (Amps) | 90 mA | 90 mA | 90 mA | 90 mA | 90 mA |
| DC Resistance (Max) | 10.5 Ohm | 10.5 Ohm | 10.5 Ohm | 10.5 Ohm | 10.5 Ohm |
| Core Material | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite |
| Shielding | Shielded | Shielded | Shielded | Shielded | Unshielded |
| Q @ 790 kHz | 60 | 60 | 60 | 60 | 60 |
| Self Resonant Frequency | 4.7 MHz | 4.7 MHz | 4.7 MHz | 4.7 MHz | 4.7 MHz |
| Operating Temperature | -55°C to 105°C | -55°C to 125°C | -55°C to 105°C | -55°C to 105°C | -55°C to 105°C |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Package / Case | Axial | Axial | Axial | Axial | Axial |
| Size / Dimension | 0.162" Dia x 0.410" L | 0.162" Dia x 0.410" L | 0.162" Dia x 0.410" L | 0.162" Dia x 0.410" L | 0.162" Dia x 0.410" L |
| Product Status | Obsolete | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | RoHS non-compliant | RoHS non-compliant | RoHS non-compliant |
| Packaging | - | Bulk | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) |
Engineering Selection Recommendations
Primary Recommendation: Bourns 9250A-564-RC
The 9250A-564-RC is the preferred substitute for the obsolete 9250-564-RC. Both parts are manufactured by Bourns Inc. and maintain identical electrical specifications across inductance, current rating, DC resistance, and frequency characteristics. The 9250A-564-RC features active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment. The extended operating temperature range (-55°C to 125°C versus -55°C to 105°C) provides additional thermal margin. Packaging is available in bulk format.
Secondary Recommendation: API Delevan ER1641-564KM or ER1641-564KP
The ER1641-564KM and ER1641-564KP are functionally equivalent alternatives from API Delevan Inc. Both maintain all critical electrical parameters and physical dimensions. These parts are supplied in tape and reel packaging suitable for automated assembly. However, both are RoHS non-compliant, which may restrict use in applications subject to RoHS regulations. Selection between these two variants depends on packaging requirements and supply chain preferences.
Conditional Recommendation: API Delevan ER1641-564KR
The ER1641-564KR matches all electrical specifications and physical dimensions but features unshielded construction. This part is suitable only for applications where electromagnetic shielding is not required. The unshielded design may introduce coupling effects in sensitive circuits. This variant is designated as a military-grade component per MIL-PRF-39010/03 and is supplied in tape and reel packaging.
Frequently Asked Questions (FAQ)
Q: Can the 9250A-564-RC be used as a direct replacement for the 9250-564-RC?
A: Yes. The 9250A-564-RC is the active production equivalent. Both parts share identical inductance (560 µH), current rating (90 mA), DC resistance (10.5 Ohm max), core material (ferrite), shielding, and physical dimensions. The 9250A-564-RC offers extended temperature range and active product status.
Q: What is the difference between the Bourns and API Delevan options?
A: The Bourns 9250A-564-RC is ROHS3 compliant and available in bulk packaging. The API Delevan ER1641 series parts are RoHS non-compliant and supplied in tape and reel format. All three options (ER1641-564KM, ER1641-564KP, ER1641-564KR) maintain identical electrical specifications and physical form factors.
Q: Can I use the ER1641-564KR (unshielded) instead of the shielded 9250-564-RC?
A: The ER1641-564KR is electrically equivalent but lacks electromagnetic shielding. Use this part only if the original design does not require shielding. Unshielded inductors may introduce electromagnetic coupling in sensitive circuits and should be evaluated for specific application requirements.
Q: What packaging formats are available?
A: The Bourns 9250A-564-RC is available in bulk packaging. The API Delevan ER1641 series (all variants) is supplied in tape and reel format suitable for automated assembly processes.
Q: Are there compliance differences between these parts?
A: The Bourns 9250A-564-RC is ROHS3 compliant. The API Delevan ER1641 series parts are RoHS non-compliant. All parts are REACH unaffected and classified as EAR99 for export control purposes.
Q: Do these parts have different temperature ratings?
A: The Bourns 9250A-564-RC operates from -55°C to 125°C. The original 9250-564-RC and all API Delevan ER1641 variants operate from -55°C to 105°C. The extended range of the 9250A-564-RC provides additional thermal margin for high-temperature applications.
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