Request Quote
(Ships tomorrow)
Bourns 5240 40µH 3A Wirewound Inductor - Equivalent & Substitute Parts
Part Overview
The Bourns 5240 is a 40µH unshielded drum core wirewound inductor rated for 3A continuous current with a maximum DC resistance of 82mOhm. This through-hole axial component operates across the temperature range of -55°C to 105°C and is designed for applications requiring fixed inductance in compact form factors.
The 5240 carries an obsolete product status. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications currently utilizing this component.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 40 µH |
| Inductance Tolerance | ±20% |
| Current Rating | 3 A |
| DC Resistance (Max) | 82 mOhm |
| Core Type | Ferrite Drum Core |
| Shielding | Unshielded |
| Mounting Type | Through Hole |
| Package | Axial |
| Physical Dimensions | 0.310" Dia × 1.250" L (7.87mm × 31.75mm) |
| Operating Temperature Range | -55°C to 105°C |
| Frequency - Self Resonant | 145 MHz |
| Inductance Test Frequency | 1 kHz |
Substitute Part Grouping Explanation
Substitution for the Bourns 5240 is determined by strict equivalence across the following electrical and mechanical parameters:
- Inductance Value: 40 µH at 1 kHz test frequency
- Inductance Tolerance: ±20%
- Current Rating: 3 A minimum
- DC Resistance: 82 mOhm maximum
- Core Material: Ferrite
- Core Configuration: Drum core, wirewound
- Shielding: Unshielded
- Mounting: Through hole, axial package
- Physical Footprint: 0.310" diameter × 1.250" length
- Operating Temperature: -55°C to 105°C minimum range
The substitute part 5240-RC maintains identical electrical specifications and physical dimensions while offering improved product status and regulatory compliance.
Parameter Comparison
| Parameter | Bourns 5240 | Bourns 5240-RC |
|---|---|---|
| Manufacturer | Bourns Inc. | Bourns Inc. |
| Series | 5200 | 5200 |
| Inductance | 40 µH | 40 µH |
| Inductance Tolerance | ±20% | ±20% |
| Current Rating | 3 A | 3 A |
| DC Resistance (Max) | 82 mOhm | 82 mOhm |
| Core Type | Ferrite Drum Core | Ferrite Drum Core |
| Shielding | Unshielded | Unshielded |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | Axial | Axial |
| Physical Dimensions | 0.310" Dia × 1.250" L (7.87mm × 31.75mm) | 0.310" Dia × 1.250" L (7.87mm × 31.75mm) |
| Operating Temperature Range | -55°C to 105°C | -55°C to 105°C |
| Frequency - Self Resonant | 145 MHz | 145 MHz |
| Inductance Test Frequency | 1 kHz | 1 kHz |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | RoHS3 Compliant |
| Packaging Type | Tape and Reel | Bulk |
| REACH Status | REACH Unaffected | REACH Unaffected |
| ECCN | EAR99 | EAR99 |
| HTSUS Code | 8504.50.8000 | 8504.50.8000 |
Engineering Selection Recommendations
The Bourns 5240-RC is the direct substitute for the obsolete Bourns 5240. Both components are electrically and mechanically identical across all specified parameters. The 5240-RC offers the following advantages:
- Active Product Status: The 5240-RC maintains current manufacturing and support from Bourns Inc., ensuring long-term availability and supply chain stability.
- RoHS3 Compliance: The 5240-RC meets RoHS3 regulatory requirements, whereas the original 5240 is non-compliant. This compliance is essential for applications subject to EU environmental directives and equivalent regulations in other jurisdictions.
- Identical Electrical Performance: All electrical parameters—inductance, current rating, DC resistance, and frequency characteristics—are identical between the two parts.
- Identical Physical Footprint: Pin-to-pin compatibility and board layout remain unchanged, enabling direct substitution without PCB redesign.
For new designs or component replacement in existing applications, the 5240-RC is the appropriate selection.
Frequently Asked Questions (FAQ)
Q: Can the 5240-RC be used as a direct replacement for the 5240 on existing PCBs?
A: Yes. The 5240-RC is electrically and mechanically identical to the 5240. Physical dimensions, pinout, and electrical specifications are unchanged, enabling direct substitution without PCB modification.
Q: What is the difference between the 5240 and 5240-RC?
A: The primary differences are product status and regulatory compliance. The 5240 is obsolete and RoHS non-compliant. The 5240-RC is an active product that meets RoHS3 requirements. All electrical and mechanical specifications are identical.
Q: Does the 5240-RC meet RoHS requirements?
A: Yes. The 5240-RC is RoHS3 compliant. The original 5240 is not RoHS compliant.
Q: Are there any performance differences between the 5240 and 5240-RC?
A: No. Both components share identical inductance values, current ratings, DC resistance specifications, temperature operating ranges, and frequency characteristics.
Q: What packaging options are available for the 5240-RC?
A: The 5240-RC is supplied in bulk packaging. The original 5240 was supplied in tape and reel format.
Q: Can the 5240-RC handle the same current and temperature conditions as the 5240?
A: Yes. The 5240-RC is rated for 3A continuous current and operates across the same temperature range of -55°C to 105°C as the original 5240.
Q: Is the physical footprint identical between the two parts?
A: Yes. Both components measure 0.310" diameter × 1.250" length (7.87mm × 31.75mm) and use identical axial through-hole mounting.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts