B1135AS-100M=P3 Equivalent & Substitute Parts

Part Overview

The B1135AS-100M=P3 is a 10 µH shielded drum core wirewound inductor manufactured by Murata Electronics, rated for 3.3 A continuous current with a maximum DC resistance of 45 mOhm. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications. The part operates across the industrial temperature range of -40°C to 85°C and is suitable for surface mount assembly in compact form factors.

Substiute Parts

B1135AS-100M=P3

Murata ElectronicsIn Stock: 888B1135AS-100M=P3 Datasheet

Current PartRFQ

SLF10165T-100M3R83PF

TDK CorporationIn Stock: 28588SLF10165T-100M3R83PF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the B1135AS-100M=P3 is determined by strict equivalence across the following critical parameters:

• Inductance Value: 10 µH at 100 kHz test frequency with ±20% tolerance
• Core Type & Shielding: Ferrite material with shielded drum core construction
• Current Handling: Minimum continuous current rating of 3.3 A
• DC Resistance: Maximum 45 mOhm to maintain thermal and efficiency characteristics
• Mounting & Package: Surface mount configuration compatible with SMD assembly
• Temperature Range: Operating range encompassing -40°C to 85°C minimum

The substitute part SLF10165T-100M3R83PF meets these criteria with enhanced electrical performance characteristics while maintaining functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SLF10165T-100M3R83PF from TDK Corporation serves as a direct functional substitute for the obsolete B1135AS-100M=P3. The substitute part maintains identical inductance specifications and tolerance while providing superior electrical performance across all critical parameters: higher continuous current rating (3.8 A vs. 3.3 A), improved saturation current (4.1 A vs. 2.4 A), and reduced DC resistance (22.2 mOhm vs. 45 mOhm maximum).

The TDK substitute extends the operating temperature range to 105°C, providing additional thermal margin beyond the original specification. Both components maintain MSL 1 moisture sensitivity classification and are tested at 100 kHz. The substitute is classified as "Not For New Designs" by TDK; however, it remains suitable for replacement and maintenance applications where the B1135AS-100M=P3 is no longer available.

Compliance certifications for the substitute include ROHS3 compliance and REACH unaffected status, supporting regulatory requirements in industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can the SLF10165T-100M3R83PF directly replace the B1135AS-100M=P3 in existing designs?

A: Yes. Both components share identical inductance values (10 µH), tolerance (±20%), core material (ferrite), shielding configuration, and mounting type (surface mount). The substitute meets or exceeds all electrical requirements of the original part.

Q: What are the physical dimension differences between these parts?

A: The B1135AS-100M=P3 measures 0.331" L × 0.327" W × 0.197" H (8.40mm × 8.30mm × 5.00mm). The SLF10165T-100M3R83PF measures 0.398" L × 0.398" W × 0.268" H (10.10mm × 10.10mm × 6.80mm). PCB layout verification is required to confirm physical fit in space-constrained applications.

Q: Why does the substitute have lower DC resistance?

A: The SLF10165T-100M3R83PF exhibits 22.2 mOhm maximum DC resistance compared to 45 mOhm maximum for the original part. Lower DC resistance reduces resistive losses and heat generation, providing improved efficiency. This represents an enhancement rather than a limitation for substitution.

Q: Are there packaging differences between the original and substitute?

A: The B1135AS-100M=P3 is supplied in nonstandard packaging. The SLF10165T-100M3R83PF is supplied in Tape & Reel (TR) format, standard for high-volume surface mount assembly. Reel compatibility with existing pick-and-place equipment should be verified.

Q: What is the significance of the "Not For New Designs" status on the TDK part?

A: This designation indicates TDK does not recommend the SLF10165T-100M3R83PF for new product development. However, it remains available for replacement, maintenance, and legacy system support where the original B1135AS-100M=P3 is obsolete and unavailable.

Q: Do both parts meet the same moisture sensitivity requirements?

A: Yes. Both components are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or assembly processes.