Bourns 1120-1R5M Equivalent & Substitute Parts

Part Overview

The Bourns 1120-1R5M is a 1.5 µH unshielded drum core wirewound inductor rated for 11.4 A continuous current with a maximum DC resistance of 3 mOhm. This through-hole radial component operates across the temperature range of -55°C to 105°C and is designed for applications requiring low-inductance, high-current filtering and energy storage.

The 1120-1R5M carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for legacy systems utilizing this component.

Substiute Parts

1120-1R5M

Bourns Inc.In Stock: 9761120-1R5M Datasheet

Current PartRFQ

DC780-152L

API Delevan Inc.In Stock: 848DC780-152L Datasheet

SimilarRFQ

IHB2EB1R5M

Vishay DaleIn Stock: 820IHB2EB1R5M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1120-1R5M are qualified based on the following critical parameters:

• Inductance Value: 1.5 µH (primary electrical specification)
• Current Rating: Minimum 11.4 A (functional requirement for load handling)
• DC Resistance: 3 mOhm maximum (thermal and efficiency constraint)
• Core Material: Ferrite (electromagnetic performance characteristic)
• Shielding Configuration: Unshielded (EMI profile and form factor)
• Mounting Type: Through Hole (mechanical interface requirement)
• Package Style: Radial, Vertical Cylinder (PCB footprint compatibility)

Substitute parts must satisfy all these parameters to ensure functional equivalence. Tolerance variations and enhanced operating temperature ranges represent acceptable improvements over the original specification.

Parameter Comparison

Engineering Selection Recommendations

API Delevan DC780-152L qualifies as a direct substitute for the 1120-1R5M. This part maintains identical inductance, current rating, and DC resistance specifications while offering improved inductance tolerance (±15% versus ±20%) and an extended operating temperature range (-55°C to 125°C). The DC780-152L carries active product status, ensuring ongoing availability and supply chain support. Both parts share identical RoHS non-compliance status and REACH unaffected classification.

Vishay Dale IHB2EB1R5M meets the core electrical requirements with matching inductance and DC resistance values. This part provides enhanced current handling capability at 17.4 A, exceeding the 11.4 A requirement of the original specification. The IHB2EB1R5M is suitable for applications where increased current margin is beneficial. Incomplete specification data limits full parameter verification for this option.

For new designs or production requiring maximum supply certainty, the DC780-152L is the preferred substitute due to active product status and complete specification documentation.

Frequently Asked Questions (FAQ)

Q: Can the DC780-152L be used as a direct replacement for the 1120-1R5M?

A: Yes. Both parts share identical inductance (1.5 µH), current rating (11.4 A), and DC resistance (3 mOhm maximum). The DC780-152L offers improved inductance tolerance and extended temperature range, making it functionally equivalent and superior in performance margin.

Q: What is the significance of the inductance tolerance difference between the 1120-1R5M (±20%) and DC780-152L (±15%)?

A: Tighter tolerance in the DC780-152L reduces inductance variation across the manufacturing range, providing more consistent circuit performance. Applications with strict inductance requirements benefit from this improvement.

Q: Is the IHB2EB1R5M suitable for applications designed around the 1120-1R5M?

A: The IHB2EB1R5M meets the electrical specifications for inductance and DC resistance. The higher current rating (17.4 A versus 11.4 A) provides additional thermal margin. Mechanical compatibility should be verified through dimensional comparison before implementation.

Q: Why is the 1120-1R5M listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Substitute parts ensure continued availability for maintenance, repair, and legacy system support.

Q: Are there any compliance differences between the substitute parts and the original?

A: All listed parts share identical RoHS non-compliance and REACH unaffected status. Compliance requirements should be evaluated based on end-application regulatory obligations.