DC1050R-684K Equivalent & Substitute Parts

Part Overview

The DC1050R-684K is a 680 µH fixed unshielded inductor manufactured by API Delevan Inc., rated for 2.7 A continuous current with a maximum DC resistance of 256 mOhm. This through-hole radial component operates across the temperature range of -55°C to 125°C and is classified as Active product status with full RoHS3 compliance.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances. The DC1050R-684K remains in active production with 1150 pieces in current inventory.

Substiute Parts

DC1050R-684K

API Delevan Inc.In Stock: 1161DC1050R-684K Datasheet

Current PartRFQ

1130-681K-RC

Bourns Inc.In Stock: 13941130-681K-RC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DC1050R-684K are identified based on strict electrical and mechanical parameter matching. The substitution logic requires:

Electrical Parameters (Must Match):

• Inductance value: 680 µH within ±10% tolerance
• DC Resistance: 256 mOhm maximum
• Current Rating: Equal to or greater than 2.7 A
• Shielding classification: Unshielded

Mechanical Parameters (Must Match):

• Mounting Type: Through Hole
• Package / Case: Radial, Vertical Cylinder
• Physical dimensions compatible with PCB footprint

Compliance Parameters (Must Match):

• RoHS3 Compliant status
• REACH Unaffected status

The substitute part 1130-681K-RC from Bourns Inc. meets all critical substitution criteria within these defined parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: DC1050R-684K

The DC1050R-684K remains the specified component with active production status and full inventory availability (1150 pieces). This part maintains the complete operating temperature range of -55°C to 125°C and carries full RoHS3 and REACH compliance certifications.

Approved Substitute: 1130-681K-RC

The 1130-681K-RC from Bourns Inc. is an approved electrical and mechanical equivalent. This substitute provides:

• Identical inductance value and tolerance (680 µH ±10%)
• Identical DC resistance specification (256 mOhm maximum)
• Higher current rating (2.8 A versus 2.7 A), providing additional thermal margin
• Identical physical mounting height (0.840 inches)
• Smaller radial diameter (1.100 inches versus 1.180 inches), reducing PCB footprint
• Full RoHS3 and REACH compliance
• Active production status with 1329 pieces in inventory

The operating temperature range of the substitute extends to 105°C maximum, which is 20°C lower than the primary part. Selection of the substitute should account for this thermal envelope limitation in applications requiring operation above 105°C.

Frequently Asked Questions (FAQ)

Q: Can the 1130-681K-RC be used as a direct replacement for the DC1050R-684K?

A: Yes, within the specified electrical and mechanical parameters. Both components share identical inductance (680 µH ±10%), DC resistance (256 mOhm maximum), shielding classification (unshielded), mounting type (through-hole), and package style (radial vertical cylinder). Both are RoHS3 compliant and active products.

Q: What is the difference in current rating between these parts?

A: The DC1050R-684K is rated for 2.7 A continuous current, while the 1130-681K-RC is rated for 2.8 A. The substitute provides 0.1 A additional current capacity, which represents improved thermal performance margin. Both parts meet or exceed the 2.7 A requirement.

Q: Are there physical dimension differences?

A: Yes. The DC1050R-684K has a radial diameter of 1.180 inches (29.98 mm), while the 1130-681K-RC measures 1.100 inches (27.94 mm) in diameter. Both share identical seated height of 0.840 inches (21.34 mm). The substitute has a smaller footprint, which may provide PCB layout advantages.

Q: What is the operating temperature limitation of the substitute?

A: The 1130-681K-RC operates from -55°C to 105°C, compared to the primary part's -55°C to 125°C range. The substitute cannot be used in applications requiring sustained operation above 105°C. The primary part DC1050R-684K must be specified for high-temperature applications exceeding this threshold.

Q: Are both parts compliant with environmental regulations?

A: Yes. Both the DC1050R-684K and 1130-681K-RC are RoHS3 compliant and REACH unaffected. Both carry identical regulatory compliance status.

Q: What is the inductance test frequency for these components?

A: Both components are specified at 1 kHz inductance test frequency, establishing a common measurement standard for the 680 µH inductance value.

Q: Can I mix these parts in the same production batch?

A: Both parts are through-hole radial components with identical mounting height and electrical specifications. PCB layout compatibility depends on the specific footprint design. The smaller diameter of the 1130-681K-RC (1.100 inches) may fit within footprints designed for the larger DC1050R-684K (1.180 inches), but verification of the specific PCB layout is required.