SC1608C-6R8 Equivalent & Substitute Parts

Part Overview

The SC1608C-6R8 is a 6.8 µH shielded inductor manufactured by Signal Transformer, rated for 2.22 A continuous current with a maximum DC resistance of 65mOhm. This component is classified as obsolete, making equivalent substitutes necessary for new designs and production continuity. The part operates across the industrial temperature range of -40°C to 125°C and is RoHS3 compliant.

Substiute Parts

SC1608C-6R8

Signal TransformerIn Stock: 899SC1608C-6R8 Datasheet

Current PartRFQ

CDRH6D23HPNP-6R8NC

Sumida America Components Inc.In Stock: 1045CDRH6D23HPNP-6R8NC Datasheet

MFR RecommendedRFQ

IDCS2512ER6R8M

Vishay DaleIn Stock: 1148IDCS2512ER6R8M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC1608C-6R8 is determined by the following critical parameters:

• Inductance Value: Must be 6.8 µH with tolerance compatibility
• Current Rating: Minimum 2.22 A continuous current capability
• DC Resistance: Maximum 65mOhm to maintain circuit performance
• Shielding: Must be shielded to prevent electromagnetic interference
• Mounting Type: Surface mount configuration required
• Operating Temperature Range: Must support -40°C to 125°C minimum
• Test Frequency: 100 kHz measurement standard

The two substitute parts listed meet these core electrical and mechanical requirements while maintaining form factor compatibility with the original nonstandard package dimensions.

Parameter Comparison

Engineering Selection Recommendations

CDRH6D23HPNP-6R8NC (Sumida America Components Inc.)

This substitute maintains electrical equivalence with a current rating of 2.2 A, matching the original specification within 1%. The DC resistance of 68.8mOhm is within acceptable tolerance of the 65mOhm maximum. The part is active in production with drum core, wirewound construction and ferrite core material. The operating temperature range extends to 105°C, which is 20°C lower than the original specification. This part is suitable for applications where the upper temperature limit does not exceed 105°C.

IDCS2512ER6R8M (Vishay Dale)

This substitute provides identical inductance and DC resistance specifications (65mOhm max) with improved tolerance (±20% versus ±30%). However, the current rating is 1.2 A, which is 46% lower than the original 2.22 A specification. This part is suitable only for applications where the circuit current requirement does not exceed 1.2 A. The operating temperature range matches the original at -40°C to 125°C, and RoHS3 compliance is maintained.

Frequently Asked Questions (FAQ)

Q: Can CDRH6D23HPNP-6R8NC be used in all applications requiring SC1608C-6R8?

A: The CDRH6D23HPNP-6R8NC is electrically equivalent for current ratings up to 2.2 A. The operating temperature range limitation to 105°C maximum must be evaluated against circuit requirements. Applications operating above 105°C require the IDCS2512ER6R8M or continued sourcing of the original part.

Q: Why does IDCS2512ER6R8M have a lower current rating?

A: The IDCS2512ER6R8M is rated for 1.2 A continuous current, which is below the original 2.22 A specification. This part is suitable only for circuits designed for lower current operation. For applications requiring the full 2.22 A rating, use CDRH6D23HPNP-6R8NC or source the original SC1608C-6R8.

Q: Are the physical dimensions compatible between these parts?

A: SC1608C-6R8 and IDCS2512ER6R8M share identical dimensions: 0.260" L x 0.175" W (6.60mm x 4.45mm) with 0.115" (2.92mm) seated height. CDRH6D23HPNP-6R8NC has slightly different dimensions: 0.264" L x 0.264" W (6.70mm x 6.70mm) with 0.098" (2.50mm) seated height. PCB layout verification is required before substitution.

Q: What is the significance of the ±30% versus ±20% tolerance difference?

A: IDCS2512ER6R8M offers tighter inductance tolerance (±20%) compared to the original ±30%. This provides better circuit performance consistency but does not affect substitution eligibility. Both tolerances are acceptable for standard inductor applications at 100 kHz test frequency.

Q: Are all substitute parts RoHS3 compliant?

A: IDCS2512ER6R8M is explicitly RoHS3 compliant. CDRH6D23HPNP-6R8NC compliance status is not specified in the provided data. Compliance verification with the manufacturer is required before use in regulated applications.