1210HS-331EMFS Equivalent & Substitute Parts

Part Overview

The 1210HS-331EMFS is a 330 nH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components, designed for surface mount applications in the 1210 (3225 Metric) package. This component operates at 530 mA with a DC resistance of 250 mOhm and is rated for -40°C to 85°C operating temperature range.

The 1210HS-331EMFS has reached obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this inductance value and package format.

Substiute Parts

1210HS-331EMFS

Delta Electronics/ComponentsIn Stock: 11221210HS-331EMFS Datasheet

Current PartRFQ

NLCV32T-R33M-EFR

TDK CorporationIn Stock: 5041NLCV32T-R33M-EFR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1210HS-331EMFS must satisfy the following critical parameters to ensure functional equivalence:

Mandatory Matching Parameters:

• Inductance value: 330 nH
• Inductance tolerance: ±20%
• Package / Case: 1210 (3225 Metric)
• Core type: Ferrite, Drum Core, Wirewound
• Shielding configuration: Unshielded
• Mounting type: Surface Mount
• Test frequency: 25.2 MHz

Allowable Variation Parameters:

• Current rating must equal or exceed 530 mA
• DC resistance must be equal to or lower than 250 mOhm
• Operating temperature range may extend beyond -40°C ~ 85°C
• Product status may differ (active vs. obsolete)
• Packaging format may vary (Tape & Reel vs. other formats)

The NLCV32T-R33M-EFR from TDK Corporation meets all mandatory matching criteria and provides superior electrical performance in current rating and DC resistance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The NLCV32T-R33M-EFR is a direct functional substitute for the 1210HS-331EMFS based on the following engineering criteria:

Electrical Compatibility: Both components share identical inductance values (330 nH) and tolerance specifications (±20%), ensuring equivalent circuit performance at the specified test frequency of 25.2 MHz. The substitute part exceeds the current rating requirement (2.1 A vs. 530 mA) and provides superior DC resistance performance (42 mOhm Max vs. 250 mOhm), resulting in lower power dissipation and improved thermal characteristics.

Physical and Mechanical Compatibility: Both parts utilize the 1210 (3225 Metric) surface mount package with identical core construction (ferrite drum core, wirewound, unshielded). Physical dimensions and mounting characteristics are compatible with existing PCB layouts and assembly processes.

Regulatory and Compliance Status: Both components maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. The substitute part is currently in active production status, ensuring long-term supply chain availability compared to the obsolete main part.

Operating Environment: The substitute part supports an extended operating temperature range (-40°C ~ 105°C) that encompasses the original specification (-40°C ~ 85°C), providing additional thermal margin for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the NLCV32T-R33M-EFR directly replace the 1210HS-331EMFS in existing designs?

A: Yes. Both components share identical inductance values, tolerance specifications, package dimensions, and core construction. The substitute part meets or exceeds all electrical performance requirements of the original component.

Q: What are the key differences between these two inductors?

A: The primary differences are: (1) Current rating—the substitute supports 2.1 A versus 530 mA for the original; (2) DC resistance—the substitute provides 42 mOhm Max versus 250 mOhm for the original; (3) Operating temperature range—the substitute extends to 105°C versus 85°C for the original; (4) Product status—the substitute is active production while the original is obsolete.

Q: Does the lower DC resistance of the substitute part affect circuit operation?

A: No. Lower DC resistance is a performance improvement that reduces power dissipation and heat generation. This does not negatively impact circuit function and is compatible with designs specified for the original component.

Q: Are there packaging format differences between these parts?

A: The main part is supplied in standard packaging, while the substitute (NLCV32T-R33M-EFR) is supplied in Tape & Reel (TR) format. Both are surface mount compatible and suitable for automated assembly processes.

Q: What is the significance of the Q factor difference (35 vs. 10 at 25.2 MHz)?

A: The Q factor indicates the quality of the inductor at the specified frequency. The original part exhibits higher Q, indicating lower losses at 25.2 MHz. However, both values are within acceptable ranges for typical RF and filtering applications. Circuit performance should be validated for frequency-dependent applications.

Q: Are both components RoHS compliant?

A: Yes. Both the 1210HS-331EMFS and NLCV32T-R33M-EFR are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the self-resonant frequency difference, and does it matter?

A: The original part has a self-resonant frequency of 400 MHz, while the substitute is 300 MHz. For applications operating below these frequencies, this difference has minimal impact. Applications requiring operation near or above 300 MHz should be evaluated for frequency-dependent performance.