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DC630R-103K Equivalent & Substitute Parts
Part Overview
The DC630R-103K is a 10 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc. This through-hole component is rated for 9.5 A continuous current with a maximum DC resistance of 10 mOhm and operates across the temperature range of -55°C to 125°C. The part is ROHS3 compliant and currently active in production with 994 pieces in stock.
Substitute parts are identified when equivalent electrical and mechanical parameters allow direct replacement in circuit applications without performance degradation. Substitution becomes necessary due to supply chain constraints, inventory availability, or design flexibility requirements.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Inductance | 10 | µH |
| Inductance Tolerance | ±10 | % |
| Current Rating | 9.5 | A |
| DC Resistance (Max) | 10 | mOhm |
| Current - Saturation | 21.5 | A |
| Core Material | Ferrite | — |
| Shielding | Unshielded | — |
| Operating Temperature Range | -55 to 125 | °C |
| Mounting Type | Through Hole | — |
| Package Type | Radial, Vertical Cylinder | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution eligibility for the DC630R-103K is determined by the following critical parameters:
Electrical Equivalence Requirements:
- Inductance value: 10 µH (±10% tolerance)
- DC resistance: 10 mOhm maximum
- Current rating: minimum 9.5 A continuous
- Core material: Ferrite, unshielded configuration
Mechanical Compatibility Requirements:
- Mounting type: Through hole
- Package configuration: Radial, vertical cylinder orientation
- Physical dimensions: compatible with PCB footprint spacing
Compliance & Environmental Requirements:
- RoHS3 compliance mandatory
- Operating temperature range: minimum -55°C to 105°C
- REACH unaffected status
The substitute part 1110-100K-RC (Bourns Inc.) meets the core electrical and mechanical criteria for direct substitution with documented parameter alignment across inductance, tolerance, DC resistance, core type, shielding, and mounting configuration.
Parameter Comparison
| Parameter | DC630R-103K (API Delevan) | 1110-100K-RC (Bourns) | Compatibility |
|---|---|---|---|
| Inductance | 10 µH | 10 µH | Equivalent |
| Inductance Tolerance | ±10% | ±10% | Equivalent |
| Current Rating | 9.5 A | 9 A | Main part rated higher |
| DC Resistance (Max) | 10 mOhm | 10 mOhm | Equivalent |
| Core Material | Ferrite | Ferrite | Equivalent |
| Shielding | Unshielded | Unshielded | Equivalent |
| Operating Temperature Range | -55°C to 125°C | -55°C to 105°C | Main part rated higher |
| Mounting Type | Through Hole | Through Hole | Equivalent |
| Package Type | Radial, Vertical Cylinder | Radial, Vertical Cylinder | Equivalent |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Equivalent |
| Size / Dimension | 0.630" Dia (16.00 mm) | 0.660" Dia (16.76 mm) | Minor variation |
| Height - Seated (Max) | 0.830" (21.08 mm) | 0.840" (21.34 mm) | Minor variation |
Engineering Selection Recommendations
DC630R-103K (API Delevan Inc.) is the primary selection when:
- Operating temperature environment exceeds 105°C
- Current load approaches or exceeds 9.5 A continuous
- Saturation current margin of 21.5 A is required
- Original design specification calls for API Delevan series components
1110-100K-RC (Bourns Inc.) is an acceptable substitute when:
- Operating temperature remains within -55°C to 105°C range
- Continuous current load does not exceed 9 A
- PCB layout accommodates the slightly larger physical dimensions (0.660" diameter vs. 0.630")
- Supply chain or inventory availability favors Bourns series components
- ROHS3 compliance and REACH unaffected status are maintained
Both parts are active products with current manufacturing status and full regulatory compliance documentation.
Frequently Asked Questions (FAQ)
Q: Can the 1110-100K-RC replace the DC630R-103K in all applications?
A: The 1110-100K-RC is electrically and mechanically compatible for applications where continuous current does not exceed 9 A and operating temperature remains below 105°C. Applications requiring the full 9.5 A rating or temperatures above 105°C require the DC630R-103K.
Q: What is the impact of the 0.5 A current rating difference?
A: The DC630R-103K provides 0.5 A additional continuous current capacity. For circuits operating near the 9 A threshold, the main part offers additional thermal margin and reliability headroom.
Q: Are the physical dimension differences significant for PCB layout?
A: The 1110-100K-RC is 0.030" larger in diameter and 0.010" taller than the DC630R-103K. PCB footprints must accommodate these dimensions. Verify clearance with adjacent components and through-hole spacing before substitution.
Q: Do both parts meet the same compliance standards?
A: Yes. Both the DC630R-103K and 1110-100K-RC are ROHS3 compliant, REACH unaffected, and carry EAR99 ECCN classification.
Q: What is the inductance frequency test difference between these parts?
A: The DC630R-103K is tested at 10 kHz while the 1110-100K-RC is tested at 1 kHz. Both maintain the specified 10 µH inductance value within ±10% tolerance at their respective test frequencies.
Q: Can I use the 1110-100K-RC in a -55°C to 125°C temperature range application?
A: No. The 1110-100K-RC is rated only to 105°C maximum. Applications requiring operation above 105°C must use the DC630R-103K.
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