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DC1050R-155K Equivalent & Substitute Parts
Part Overview
The DC1050R-155K is a 1.5 mH fixed unshielded inductor manufactured by API Delevan Inc., designed for through-hole radial mounting applications. This component is rated for 1.9 A continuous current with a maximum DC resistance of 518 mOhm and operates across the temperature range of -55°C to 125°C. The part maintains Active product status with full RoHS3 compliance and REACH unaffected certification.
Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances while meeting mechanical and environmental requirements for the intended application.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Inductance | 1.5 | mH |
| Inductance Tolerance | ±10% | — |
| Current Rating | 1.9 | A |
| DC Resistance (Max) | 518 | mOhm |
| Operating Temperature Range | -55 to 125 | °C |
| Shielding | Unshielded | — |
| Mounting Type | Through Hole | — |
| Package Type | Radial, Vertical Cylinder | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution eligibility for the DC1050R-155K is determined by strict alignment of the following critical parameters:
Electrical Parameters:
- Inductance value of 1.5 mH within ±10% tolerance
- DC resistance not exceeding 518 mOhm maximum
- Current rating equal to or greater than 1.9 A
- Unshielded configuration
Mechanical Parameters:
- Through-hole mounting compatibility
- Radial, vertical cylinder package configuration
- Physical dimensions compatible with PCB footprint requirements
Environmental & Compliance Parameters:
- Operating temperature range encompassing -55°C to 125°C minimum
- RoHS3 compliance
- REACH unaffected status
The substitute part 1130-152K-RC from Bourns Inc. meets all substitution criteria within these defined parameters.
Parameter Comparison
| Parameter | DC1050R-155K (API Delevan) | 1130-152K-RC (Bourns) | Compatibility |
|---|---|---|---|
| Inductance | 1.5 mH | 1.5 mH | Equivalent |
| Inductance Tolerance | ±10% | ±10% | Equivalent |
| Current Rating | 1.9 A | 2 A | Compatible (higher rating) |
| DC Resistance (Max) | 518 mOhm | 518 mOhm | Equivalent |
| Shielding | Unshielded | Unshielded | Equivalent |
| Mounting Type | Through Hole | Through Hole | Equivalent |
| Package Type | Radial, Vertical Cylinder | Radial, Vertical Cylinder | Equivalent |
| Operating Temperature Range | -55°C to 125°C | -55°C to 105°C | Substitute range narrower at upper limit |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Equivalent |
| REACH Status | REACH Unaffected | REACH Unaffected | Equivalent |
| Size / Dimension (Dia) | 1.180" (29.98 mm) | 1.100" (27.94 mm) | Substitute is smaller |
| Height - Seated (Max) | 0.840" (21.34 mm) | 0.840" (21.34 mm) | Equivalent |
Engineering Selection Recommendations
Primary Selection (DC1050R-155K): The DC1050R-155K remains the primary component choice when the full operating temperature range of -55°C to 125°C is required. This part is Active status with confirmed RoHS3 compliance and REACH unaffected certification, supporting long-term supply continuity.
Substitute Selection (1130-152K-RC): The 1130-152K-RC from Bourns Inc. is a qualified substitute when the application operating temperature does not exceed 105°C. This part provides equivalent electrical performance with a higher current rating (2 A versus 1.9 A), offering additional thermal margin. The substitute maintains Active product status with identical RoHS3 and REACH compliance. The smaller physical diameter (27.94 mm versus 29.98 mm) may provide PCB layout advantages in space-constrained designs, provided the footprint accommodates the reduced size.
Both parts are suitable for applications requiring 1.5 mH inductance with 518 mOhm maximum DC resistance in through-hole radial configurations.
Frequently Asked Questions (FAQ)
Q: Can the 1130-152K-RC substitute for the DC1050R-155K in all applications?
A: The 1130-152K-RC is a qualified substitute for applications where the maximum operating temperature does not exceed 105°C. The DC1050R-155K supports operation to 125°C. Verify application temperature requirements before substitution.
Q: Are the physical dimensions compatible between these parts?
A: Both parts share identical seated height (0.840 inches / 21.34 mm). The 1130-152K-RC has a smaller diameter (1.100 inches / 27.94 mm) compared to the DC1050R-155K (1.180 inches / 29.98 mm). Confirm PCB footprint and mounting hole spacing accommodate the substitute diameter before implementation.
Q: Do both parts meet the same compliance standards?
A: Yes. Both the DC1050R-155K and 1130-152K-RC are RoHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements for restricted substance use.
Q: What is the significance of the higher current rating on the substitute part?
A: The 1130-152K-RC is rated for 2 A continuous current versus 1.9 A for the DC1050R-155K. This higher rating provides additional thermal margin and may reduce core temperature rise in applications operating near the 1.9 A threshold.
Q: Are there any differences in core material between these inductors?
A: The DC1050R-155K core material is not specified in the provided parameters. The 1130-152K-RC uses a ferrite drum core with wirewound construction. Confirm core material compatibility with application electromagnetic requirements.
Q: What is the inductance test frequency for both parts?
A: Both parts are tested at 1 kHz inductance frequency, ensuring measurement consistency between the two components.
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