Request Quote
(Ships tomorrow)
DC780R-105K Equivalent & Substitute Parts
Part Overview
The DC780R-105K is a 1 mH unshielded drum core wirewound inductor manufactured by API Delevan Inc. This through-hole component is rated for 1 A continuous current with a maximum DC resistance of 818 mOhm and operates across the temperature range of -55°C to 125°C. The part is currently active in production with 1121 pieces available in stock. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing, inventory constraints, or supply chain optimization while maintaining electrical and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Inductance | 1 | mH |
| Inductance Tolerance | ±10 | % |
| Current Rating | 1 | A |
| DC Resistance (Max) | 818 | mOhm |
| Core Material | Ferrite | — |
| Shielding | Unshielded | — |
| Mounting Type | Through Hole | — |
| Package Type | Radial, Vertical Cylinder | — |
| Operating Temperature Range | -55 to 125 | °C |
| Inductance Test Frequency | 1 | kHz |
Substitute Part Grouping Explanation
Substitution of the DC780R-105K is determined by strict equivalence across the following critical parameters:
Electrical Parameters:
- Inductance value: 1 mH at ±10% tolerance
- Current rating: 1 A minimum
- DC resistance: 818 mOhm maximum
- Core material: Ferrite
- Shielding configuration: Unshielded
Mechanical Parameters:
- Mounting type: Through hole
- Package configuration: Radial, vertical cylinder orientation
- Inductance measurement frequency: 1 kHz
Compliance & Status:
- Product status: Active
- RoHS3 compliance required
- REACH unaffected status
The substitute part 1120-102K-RC manufactured by Bourns Inc. meets all electrical and mechanical equivalence criteria. Dimensional variations and operating temperature range differences do not preclude substitution when the application requirements fall within the substitute part's specified limits.
Parameter Comparison
| Parameter | DC780R-105K (API Delevan) | 1120-102K-RC (Bourns) | Match Status |
|---|---|---|---|
| Inductance | 1 mH | 1 mH | Equivalent |
| Inductance Tolerance | ±10% | ±10% | Equivalent |
| Current Rating | 1 A | 1 A | Equivalent |
| DC Resistance (Max) | 818 mOhm | 818 mOhm | Equivalent |
| Core Material | Ferrite | Ferrite | Equivalent |
| Shielding | Unshielded | Unshielded | Equivalent |
| Mounting Type | Through Hole | Through Hole | Equivalent |
| Package Type | Radial, Vertical Cylinder | Radial, Vertical Cylinder | Equivalent |
| Inductance Test Frequency | 1 kHz | 1 kHz | Equivalent |
| Operating Temperature Range | -55°C to 125°C | -55°C to 105°C | Partial |
| RoHS3 Compliance | Compliant | Compliant | Equivalent |
| REACH Status | Unaffected | Unaffected | Equivalent |
Engineering Selection Recommendations
DC780R-105K (API Delevan Inc.) is the primary component specification. This part is active in production with full inventory availability and supports the complete operating temperature range of -55°C to 125°C.
1120-102K-RC (Bourns Inc.) serves as a direct electrical and mechanical equivalent. Both parts are RoHS3 compliant and REACH unaffected. The substitute part operates within -55°C to 105°C, which covers the majority of industrial and commercial applications. Selection of the substitute part is appropriate when the application maximum operating temperature does not exceed 105°C and when supply or cost considerations warrant alternative sourcing.
Both parts are active products with confirmed inventory. Component selection should be based on application temperature requirements, supply chain availability, and procurement specifications.
Frequently Asked Questions (FAQ)
Q: Can the 1120-102K-RC substitute for the DC780R-105K in all applications?
A: The 1120-102K-RC is electrically and mechanically equivalent across all specified parameters. Substitution is valid when the application operating temperature remains within -55°C to 105°C. Applications requiring operation above 105°C must use the DC780R-105K.
Q: Are the physical dimensions interchangeable?
A: Both parts use radial, vertical cylinder packaging for through-hole mounting. The DC780R-105K has a diameter of 0.772" (19.60 mm) and height of 0.831" (21.10 mm). The 1120-102K-RC has a diameter of 0.810" (20.57 mm) and height of 0.840" (21.34 mm). Verify PCB layout and mechanical clearances before substitution.
Q: Do both parts meet compliance requirements?
A: Yes. Both the DC780R-105K and 1120-102K-RC are RoHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic components.
Q: What is the saturation current specification for the substitute part?
A: The saturation current (Isat) is not specified for the 1120-102K-RC. The DC780R-105K specifies 3.5 A saturation current. Verify saturation performance requirements with the component manufacturer if this parameter is critical to the application.
Q: Are there any differences in DC resistance?
A: Both parts specify a maximum DC resistance of 818 mOhm, ensuring equivalent electrical performance in circuits where DCR is a design constraint.
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