SCRH103R-100 Equivalent & Substitute Parts

Part Overview

The SCRH103R-100 is a 10 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 2.75 A continuous current with a maximum DC resistance of 58 mOhm. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductance value and current rating category.

Substiute Parts

SCRH103R-100

Signal TransformerIn Stock: 742SCRH103R-100 Datasheet

Current PartRFQ

CDRH103RNP-100NC-B

Sumida America Components Inc.In Stock: 3320CDRH103RNP-100NC-B Datasheet

MFR RecommendedRFQ

DR1030-100-R

Eaton - Electronics DivisionIn Stock: 2178DR1030-100-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SCRH103R-100 are qualified based on the following critical parameters:

• Inductance Value: 10 µH (within ±30% tolerance specification)
• Current Rating: Minimum 2.75 A continuous current capability
• Saturation Current (Isat): Minimum 2.7 A
• DC Resistance (DCR): Maximum 58 mOhm (lower values acceptable)
• Shielding: Shielded construction required
• Mounting Type: Surface Mount
• Operating Temperature Range: Minimum -40°C ~ 125°C coverage
• RoHS Compliance: ROHS3 Compliant
• Moisture Sensitivity: MSL 1 (Unlimited)

The identified substitute parts CDRH103RNP-100NC-B and DR1030-100-R meet or exceed these electrical and mechanical requirements, enabling direct functional replacement in applications requiring 10 µH shielded surface mount inductors.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts satisfy the electrical and mechanical requirements for direct replacement of the SCRH103R-100:

CDRH103RNP-100NC-B (Sumida America Components Inc.)

• Meets all critical electrical parameters with equivalent current rating (2.8 A) and saturation current (3.18 A)
• DC resistance specification (59 mOhm Max) is within acceptable tolerance relative to the main part
• Operating temperature range is -40°C ~ 100°C, which covers the lower portion of the main part's range
• Ferrite core material construction with shielding
• ROHS3 compliant with MSL 1 rating
• Slightly smaller footprint (10.20mm x 10.00mm vs. 10.50mm x 10.30mm)

DR1030-100-R (Eaton - Electronics Division)

• Exceeds electrical performance with higher current rating (2.8 A) and saturation current (3.18 A)
• Superior DC resistance specification (48 mOhm Max), providing lower power dissipation
• Operating temperature range matches the main part (-40°C ~ 125°C)
• Drum core, wirewound construction with ferrite material and shielding
• ROHS3 compliant with MSL 1 rating
• Identical footprint to main part (10.50mm x 10.30mm) with slightly lower profile (3.00mm vs. 3.10mm)

Selection between substitutes depends on application-specific requirements regarding operating temperature ceiling and DC resistance performance.

Frequently Asked Questions (FAQ)

Q: Can CDRH103RNP-100NC-B be used in applications requiring operation above 100°C? A: No. The CDRH103RNP-100NC-B has a maximum operating temperature of 100°C, while the SCRH103R-100 and DR1030-100-R support -40°C ~ 125°C. For applications requiring the full temperature range, use DR1030-100-R.

Q: What is the significance of the DC resistance difference between these parts? A: DC resistance directly affects power dissipation in the inductor. The DR1030-100-R (48 mOhm Max) dissipates less power than the SCRH103R-100 (58 mOhm Max) at equivalent current levels. The CDRH103RNP-100NC-B (59 mOhm Max) has slightly higher dissipation. Selection should account for thermal management requirements in the application.

Q: Are all three parts compatible with the same PCB footprint? A: The SCRH103R-100 and DR1030-100-R share identical length and width dimensions (10.50mm x 10.30mm). The CDRH103RNP-100NC-B has a slightly smaller footprint (10.20mm x 10.00mm). Height differences are minimal (3.10mm vs. 3.00mm vs. 3.10mm). Verify PCB layout constraints before substitution.

Q: Do all substitute parts maintain the same inductance tolerance? A: Yes. All three parts specify ±30% inductance tolerance at 100 kHz test frequency, ensuring equivalent inductance accuracy across the product group.

Q: Are there any compliance or certification differences between these parts? A: All three parts are ROHS3 compliant, MSL 1 (Unlimited), and carry EAR99 ECCN classification. No compliance differentiation exists between the main part and substitutes.

Q: What is the saturation current significance for this inductor category? A: Saturation current (Isat) defines the current level at which the inductor's inductance begins to degrade. Both substitutes (3.18 A Isat) exceed the main part (2.7 A Isat), providing additional margin before saturation effects occur.