SCRH104R-331 Equivalent & Substitute Parts

Part Overview

The SCRH104R-331 is a 330 µH shielded inductor manufactured by Signal Transformer, designed for surface mount applications requiring moderate current handling and low DC resistance. This component is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or application-specific requirements within the allowed parameter tolerances.

Substiute Parts

SCRH104R-331

Signal TransformerIn Stock: 808SCRH104R-331 Datasheet

Current PartRFQ

DR1040-331-R

Eaton - Electronics DivisionIn Stock: 2480DR1040-331-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The DR1040-331-R qualifies as a direct substitute for the SCRH104R-331 based on the following critical parameters:

Inductance value matches at 330 µH with identical ±30% tolerance. DC resistance is equivalent at 1.09 Ohm maximum. Saturation current (Isat) is identical at 700 mA, ensuring consistent magnetic performance under transient conditions. Operating temperature range is identical (-40°C to 125°C). Physical dimensions are identical (10.50mm × 10.30mm × 4.00mm), confirming mechanical compatibility for surface mount PCB placement. Shielding classification matches (Shielded). Inductance test frequency is identical at 100 kHz. Both components maintain RoHS3 compliance and MSL 1 rating.

The primary difference is the current rating: the substitute part (DR1040-331-R) is rated at 520 mA continuous current versus 630 mA for the original part. This represents a 17.5% reduction in continuous current capacity. Selection between these parts depends on circuit current requirements relative to the 520 mA threshold.

Parameter Comparison

Engineering Selection Recommendations

Both SCRH104R-331 and DR1040-331-R maintain Active product status with full regulatory compliance (RoHS3 and REACH unaffected). Selection is determined by circuit current requirements. The SCRH104R-331 supports continuous operation at 630 mA. The DR1040-331-R supports continuous operation at 520 mA. Applications requiring sustained current above 520 mA must use the SCRH104R-331. Applications operating at or below 520 mA continuous current may use either part interchangeably from an electrical performance standpoint. Both components are qualified for identical temperature ranges and maintain equivalent magnetic performance through saturation current specifications. Packaging format differs (nonstandard versus Tape & Reel), which may affect procurement and assembly workflows but does not impact electrical or mechanical compatibility on the PCB.

Frequently Asked Questions (FAQ)

Q: Can DR1040-331-R replace SCRH104R-331 in all applications?

A: Substitution is valid only when circuit continuous current requirements do not exceed 520 mA. The DR1040-331-R is rated for 520 mA continuous current versus 630 mA for the original part. If your circuit operates above 520 mA, the SCRH104R-331 must be used.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 10.50mm length × 10.30mm width × 4.00mm height (seated). PCB footprint and mounting compatibility are identical.

Q: Do both parts have the same DC resistance?

A: Yes. Both components specify 1.09 Ohm maximum DC resistance, ensuring equivalent power dissipation characteristics.

Q: What is the difference in saturation current?

A: Both parts have identical saturation current (Isat) of 700 mA. This parameter determines magnetic performance under transient overcurrent conditions and is not a limiting factor for substitution.

Q: Are temperature operating ranges the same?

A: Yes. Both parts operate across -40°C to 125°C, providing identical thermal performance specifications.

Q: Does packaging format affect electrical performance?

A: No. The SCRH104R-331 uses nonstandard packaging while the DR1040-331-R uses Tape & Reel (TR) packaging. Packaging format affects procurement and assembly logistics only, not electrical or mechanical performance.

Q: Are both parts RoHS3 compliant?

A: Yes. Both SCRH104R-331 and DR1040-331-R are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.