SCRH104-271 Equivalent & Substitute Parts

Part Overview

The SCRH104-271 is a 270 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 590 mA continuous current with a maximum DC resistance of 1.07Ohm. This component is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The part operates across the industrial temperature range of -40°C to 125°C and is ROHS3 compliant.

Substiute Parts

SCRH104-271

Signal TransformerIn Stock: 819SCRH104-271 Datasheet

Current PartRFQ

SRR1050A-271Y

Bourns Inc.In Stock: 2667SRR1050A-271Y Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SCRH104-271 is determined by the following critical parameters:

• Inductance value: 270 µH (exact match required)
• Inductance tolerance: ±20% minimum acceptable range
• Current rating: minimum 590 mA continuous
• Saturation current: minimum 470 mA
• DC resistance: maximum 1.07Ohm
• Shielding: shielded construction required
• Mounting: surface mount configuration
• Operating temperature range: -40°C to 125°C minimum
• Test frequency: 100 kHz

The SRR1050A-271Y from Bourns Inc. qualifies as a direct substitute based on matching inductance value, shielding type, mounting configuration, and operating temperature range. The substitute provides superior electrical performance with higher current ratings and lower DC resistance.

Parameter Comparison

Engineering Selection Recommendations

The SRR1050A-271Y is the qualified substitute for the obsolete SCRH104-271. Both components maintain ROHS3 compliance and identical operating temperature specifications. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

The SRR1050A-271Y provides enhanced electrical performance with 35% higher current rating (800 mA vs 590 mA) and 37% lower DC resistance (675mOhm vs 1.07Ohm). These improvements result in reduced power dissipation and increased thermal margin in the application circuit. The substitute maintains the same 270 µH inductance value and shielded surface mount configuration required for direct replacement.

Frequently Asked Questions (FAQ)

Q: Can the SRR1050A-271Y directly replace the SCRH104-271 in existing designs?

A: Yes. Both components share identical inductance values (270 µH), shielding type (shielded), mounting configuration (surface mount), and operating temperature range (-40°C to 125°C). Physical dimensions are comparable (SCRH104-271: 10.10mm × 9.20mm × 5.00mm; SRR1050A-271Y: 10.20mm × 10.00mm × 5.10mm), permitting direct PCB footprint compatibility.

Q: What are the key differences between these parts?

A: The SRR1050A-271Y provides superior electrical performance with higher current rating (800 mA vs 590 mA), higher saturation current (840 mA vs 470 mA), and significantly lower DC resistance (675mOhm vs 1.07Ohm). The substitute has wider inductance tolerance (±30% vs ±20%) and includes AEC-Q200 automotive qualification. The SRR1050A-271Y is actively manufactured, while the SCRH104-271 is obsolete.

Q: Are there packaging differences?

A: The SCRH104-271 packaging is listed as nonstandard. The SRR1050A-271Y is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly operations.

Q: Do both parts meet compliance requirements?

A: Yes. Both components are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both have Moisture Sensitivity Level 1 (unlimited shelf life).