SCRH74-102 Equivalent & Substitute Parts

Part Overview

The SCRH74-102 is a 1 mH shielded inductor manufactured by Signal Transformer, designed for surface mount applications requiring fixed inductance in compact form factors. This component is rated for 180 mA maximum current with 6 Ohm maximum DC resistance and operates across the temperature range of -40°C to 125°C. The part maintains Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

SCRH74-102

Signal TransformerIn Stock: 924SCRH74-102 Datasheet

Current PartRFQ

SPD74R-105M

API Delevan Inc.In Stock: 2151SPD74R-105M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SCRH74-102 are qualified based on the following critical parameters that determine functional equivalence:

• Inductance Value: 1 mH (±20% tolerance)
• DC Resistance: 6 Ohm maximum
• Shielding: Shielded construction
• Mounting Type: Surface mount
• Operating Temperature Range: Minimum -40°C to 125°C coverage
• RoHS Compliance: RoHS3 compliant
• Moisture Sensitivity: MSL 1 (Unlimited)

The SPD74R-105M qualifies as a substitute part because it meets or exceeds all critical electrical and mechanical parameters. While the current rating differs (280 mA versus 180 mA), this represents an enhancement in capability and does not restrict substitution in applications designed for the SCRH74-102.

Parameter Comparison

Engineering Selection Recommendations

The SPD74R-105M from API Delevan Inc. is qualified as a direct substitute for the SCRH74-102. Both components maintain Active product status and RoHS3 compliance. The substitute part demonstrates enhanced electrical performance through higher current rating (280 mA versus 180 mA) and extended low-temperature operating range (-55°C versus -40°C minimum), while maintaining identical inductance, tolerance, DC resistance, and shielding characteristics. Physical dimensions differ slightly (7.30mm x 7.30mm versus 7.80mm x 7.80mm), requiring verification of PCB layout compatibility. Both parts are packaged in Tape & Reel format and carry MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can SPD74R-105M replace SCRH74-102 in all applications?

A: SPD74R-105M qualifies as a substitute where the SCRH74-102 is specified, provided PCB layout accommodates the slightly smaller physical dimensions (7.30mm x 7.30mm versus 7.80mm x 7.80mm). The higher current rating and extended temperature range of the substitute part do not restrict compatibility.

Q: What are the key differences between these parts?

A: The primary differences are manufacturer (Signal Transformer versus API Delevan Inc.), current rating (180 mA versus 280 mA), operating temperature minimum (-40°C versus -55°C), and physical dimensions. Inductance, tolerance, DC resistance, shielding, and compliance characteristics are identical.

Q: Are there any compliance or certification differences?

A: Both parts are RoHS3 compliant, REACH unaffected, and carry MSL 1 rating. ECCN and HTSUS classifications differ due to manufacturer and core material variations, but both parts meet equivalent regulatory requirements.

Q: What is the impact of the current rating difference?

A: The SPD74R-105M has a higher saturation current (280 mA versus 180 mA). This represents enhanced capability and does not restrict use in applications designed for the SCRH74-102, as the substitute can handle equal or greater current levels without saturation.

Q: Do physical dimension differences affect PCB compatibility?

A: The SPD74R-105M is slightly smaller (7.30mm x 7.30mm versus 7.80mm x 7.80mm) and marginally taller (4.70mm versus 4.50mm). PCB layout must accommodate these dimensions to ensure proper fit and clearance.