1234AS-H-100M=P3 Equivalent & Substitute Parts

Part Overview

The 1234AS-H-100M=P3 is a 10 µH shielded drum core wirewound inductor manufactured by Murata Electronics, rated for 1.25 A with a maximum DC resistance of 192mOhm. This surface mount component operates across the temperature range of -40°C to 85°C and is designed for applications requiring fixed inductance in compact form factors.

The part is currently listed as obsolete. Identifying equivalent and substitute components is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this inductor.

Substiute Parts

1234AS-H-100M=P3

Murata ElectronicsIn Stock: 410511234AS-H-100M=P3 Datasheet

Current PartRFQ

SD53-100-R

Eaton - Electronics DivisionIn Stock: 1291SD53-100-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1234AS-H-100M=P3 is determined by the following critical parameters:

• Inductance Value: Must match at 10 µH
• Inductance Tolerance: Must be ±20%
• Core Type and Shielding: Must be ferrite-based drum core with shielding
• Mounting Type: Must be surface mount
• Current Rating: Substitute must meet or exceed 1.25 A
• DC Resistance: Substitute must not exceed 192mOhm
• Operating Temperature Range: Substitute must support minimum -40°C ~ 85°C
• Test Frequency: Must be characterized at 100 kHz

The SD53-100-R from Eaton Electronics Division qualifies as a direct substitute based on these parameters.

Parameter Comparison

Engineering Selection Recommendations

The SD53-100-R is a qualified substitute for the 1234AS-H-100M=P3 based on the following factors:

Electrical Compatibility: The SD53-100-R meets all critical electrical specifications. It maintains the same 10 µH inductance value with ±20% tolerance and is characterized at the same 100 kHz test frequency. The substitute provides superior current handling (1.41 A vs. 1.25 A) and lower DC resistance (90mOhm vs. 192mOhm), resulting in improved thermal performance and reduced power dissipation.

Environmental Performance: The SD53-100-R extends the operating temperature range to -40°C ~ 125°C, exceeding the original part's -40°C ~ 85°C specification. Both components maintain MSL 1 (Unlimited) moisture sensitivity rating.

Supply Chain Status: The original 1234AS-H-100M=P3 is obsolete. The SD53-100-R is actively manufactured by Eaton Electronics Division with confirmed inventory availability, ensuring long-term supply continuity.

Compliance: The SD53-100-R is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements. Both components share the same ECCN (EAR99) and HTSUS (8504.50.8000) classifications.

Packaging Consideration: The SD53-100-R is supplied in Tape & Reel (TR) format. Physical dimensions differ slightly (5.20mm x 5.20mm vs. 4.70mm x 4.50mm), and height is greater (3.00mm vs. 1.40mm). PCB layout and mechanical clearance must be verified before implementation.

Frequently Asked Questions (FAQ)

Q: Can the SD53-100-R directly replace the 1234AS-H-100M=P3 without circuit modifications?

A: Electrical substitution is valid. The SD53-100-R meets or exceeds all electrical parameters. However, physical dimensions differ. PCB footprint, component height clearance, and spatial constraints must be evaluated for your specific application before implementation.

Q: Why is the DC resistance lower in the substitute part?

A: The SD53-100-R exhibits 90mOhm maximum DC resistance compared to 192mOhm in the original part. This represents improved core and winding design in the substitute component, resulting in lower power loss and reduced heat generation during operation.

Q: What is the impact of the extended temperature range in the SD53-100-R?

A: The SD53-100-R operates to 125°C versus 85°C for the original part. This provides additional thermal margin and allows use in higher ambient temperature environments. If your application operates within the original -40°C ~ 85°C range, both components are functionally equivalent in this regard.

Q: Are there any compliance differences between these components?

A: Both components share identical ECCN and HTSUS classifications. The SD53-100-R carries RoHS3 compliance and REACH unaffected status, meeting current regulatory standards. The original part's compliance status is not specified in available documentation.

Q: How do the saturation current ratings compare?

A: The original part saturates at 1 A, while the SD53-100-R saturates at 1.4 A. The substitute provides greater headroom before saturation, allowing operation at higher current levels without inductance degradation.

Q: What packaging format is the substitute supplied in?

A: The SD53-100-R is supplied in Tape & Reel (TR) format, suitable for automated assembly processes. Confirm tape specifications and reel compatibility with your production equipment.