L1207C1R0MPWST Equivalent & Substitute Parts

Part Overview

The L1207C1R0MPWST is a 1 µH unshielded drum core wirewound inductor manufactured by KEMET, designed for surface mount applications in the 1207 (3218 Metric) package. This component delivers 1.075 A current rating with 60 mOhm DC resistance and operates across the temperature range of -40°C to 105°C.

The L1207C1R0MPWST carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications utilizing this inductor specification.

Substiute Parts

L1207C1R0MPWST

KEMETIn Stock: 6684L1207C1R0MPWST Datasheet

Current PartRFQ

LB3218T1R0M

Taiyo YudenIn Stock: 1620LB3218T1R0M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the L1207C1R0MPWST are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Inductance value: 1 µH
• Current rating: 1.075 A
• DC resistance: 60 mOhm
• Inductance tolerance: ±20%
• Core material: Ferrite
• Shielding configuration: Unshielded
• Package designation: 1207 (3218 Metric)
• Physical dimensions: 0.126" L x 0.071" W (3.20mm x 1.80mm), height 0.079" (2.00mm) maximum
• Operating temperature range: -40°C to 105°C
• Self-resonant frequency: 100 MHz
• Compliance: ROHS3 Compliant, MSL 1

The LB3218T1R0M from Taiyo Yuden meets all critical electrical and mechanical parameters, making it a direct functional equivalent despite differences in product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The LB3218T1R0M from Taiyo Yuden is electrically and mechanically equivalent to the L1207C1R0MPWST. Both components satisfy identical electrical specifications, dimensional requirements, and environmental operating conditions.

Product Status Consideration: The L1207C1R0MPWST is classified as Obsolete, while the LB3218T1R0M is classified as Not For New Designs. For applications requiring component replacement or supply continuity, the LB3218T1R0M provides functional equivalence with comparable availability constraints.

Compliance Alignment: Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols.

Packaging Difference: The primary distinction between these parts is packaging format. The L1207C1R0MPWST is supplied in Cut Tape (CT) format, while the LB3218T1R0M is supplied in Tape & Reel (TR) format. This difference affects handling and assembly processes but does not impact electrical or mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can the LB3218T1R0M directly replace the L1207C1R0MPWST in existing designs?

A: Yes. The LB3218T1R0M meets all critical electrical parameters (1 µH inductance, 1.075 A current rating, 60 mOhm DCR), mechanical dimensions (1207/3218 Metric package), and environmental specifications (-40°C to 105°C operating range). Direct substitution is supported from an electrical and mechanical standpoint.

Q: What is the significance of the packaging format difference (Cut Tape vs. Tape & Reel)?

A: Packaging format affects supply chain logistics and assembly line integration. Cut Tape (CT) is typically used for lower-volume or manual assembly applications, while Tape & Reel (TR) is standard for high-volume automated assembly. The component itself is identical; only the delivery and handling method differs.

Q: Are there compliance or certification differences between these parts?

A: No. Both the L1207C1R0MPWST and LB3218T1R0M carry identical ROHS3 compliance status and MSL 1 (Unlimited) moisture sensitivity ratings. Both are suitable for applications requiring these certifications.

Q: Why is the L1207C1R0MPWST marked as Obsolete while the LB3218T1R0M is marked as Not For New Designs?

A: Product status reflects manufacturer lifecycle decisions and supply availability. The Obsolete designation indicates the KEMET part is no longer in active production. The Not For New Designs designation for the Taiyo Yuden part indicates limited future availability. Both statuses indicate supply constraints; however, the LB3218T1R0M may offer better current availability for replacement applications.

Q: Do the inductance tolerance and frequency characteristics match between these parts?

A: Yes. Both parts specify ±20% inductance tolerance and 100 MHz self-resonant frequency. These parameters are identical and ensure equivalent performance in frequency-dependent applications.

Q: What are the key parameters I should verify when substituting these parts?

A: Verify inductance value (1 µH), current rating (1.075 A), DC resistance (60 mOhm), package type (1207/3218 Metric), and operating temperature range (-40°C to 105°C). All these parameters are identical between the two parts, confirming substitution compatibility.