SC1608C-102 Equivalent & Substitute Parts

Part Overview

The SC1608C-102 is a 1 mH shielded inductor manufactured by Signal Transformer, designed for surface mount applications with a current rating of 220 mA and maximum DC resistance of 5.35Ohm. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement continuity. Substitute parts must maintain the same inductance value, shielding characteristics, and operating temperature range while accommodating variations in current rating and DC resistance within acceptable engineering tolerances.

Substiute Parts

SC1608C-102

Signal TransformerIn Stock: 1150SC1608C-102 Datasheet

Current PartRFQ

IDCS2512ER102M

Vishay DaleIn Stock: 947IDCS2512ER102M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC1608C-102 is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 1 mH (exact match required)
• Inductance test frequency: 100 kHz
• Shielding type: Shielded
• Mounting type: Surface Mount
• Physical dimensions: 0.260" L x 0.175" W (6.60mm x 4.45mm)
• Height - Seated (Max): 0.115" (2.92mm)
• Operating temperature range: -40°C ~ 125°C

Secondary Tolerance Parameters:

• Inductance tolerance: ±20% to ±30% acceptable
• Current rating: Minimum 150 mA (substitute may have lower rating if circuit design permits)
• DC resistance: Up to 5.35Ohm Max (lower values preferred for reduced losses)

The IDCS2512ER102M from Vishay Dale meets all primary matching criteria and operates within the specified temperature range. While the current rating is reduced to 150 mA and DC resistance is improved to 3.4Ohm Max, these parameters remain within acceptable substitution boundaries for applications where the original 220 mA rating is not a hard requirement.

Parameter Comparison

Engineering Selection Recommendations

The IDCS2512ER102M is the qualified substitute for the SC1608C-102 based on the following engineering factors:

Compliance & Availability: The substitute part maintains ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. As an active product from Vishay Dale, the IDCS2512ER102M provides long-term procurement stability compared to the obsolete SC1608C-102.

Electrical Compatibility: Both parts share identical inductance values (1 mH) and test frequencies (100 kHz), with the substitute offering tighter inductance tolerance (±20% vs. ±30%). The reduced DC resistance of the substitute (3.4Ohm vs. 5.35Ohm) provides improved efficiency characteristics.

Current Rating Consideration: The substitute current rating of 150 mA is lower than the original 220 mA specification. Selection of this substitute requires circuit-level analysis to confirm that peak and RMS current demands do not exceed 150 mA during normal operation.

Physical & Thermal Compatibility: Identical package dimensions and height ensure direct mechanical compatibility. Both parts operate across the same temperature range (-40°C ~ 125°C), supporting equivalent thermal performance in target applications.

Frequently Asked Questions (FAQ)

Q: Can the IDCS2512ER102M be used as a direct replacement for SC1608C-102?

A: Direct mechanical and electrical substitution is possible if circuit current requirements do not exceed 150 mA. The lower current rating is the primary design constraint. All other electrical and physical parameters are compatible.

Q: What is the impact of the reduced current rating (150 mA vs. 220 mA)?

A: The substitute part has a lower saturation current threshold. Applications operating at or near 220 mA may experience inductor saturation with the substitute, resulting in reduced inductance and increased losses. Circuit analysis is required to confirm operation within the 150 mA limit.

Q: Are the inductance tolerances interchangeable?

A: The substitute offers tighter tolerance (±20%) compared to the original (±30%). This represents an improvement in inductance accuracy and does not create compatibility issues. Circuits designed for ±30% tolerance will operate within specification with ±20% tolerance components.

Q: Does the lower DC resistance affect circuit performance?

A: The reduced DC resistance (3.4Ohm vs. 5.35Ohm) decreases resistive losses in the inductor, resulting in improved efficiency. This is a beneficial characteristic and does not create compatibility concerns.

Q: Are packaging and mounting identical?

A: Yes. Both parts use surface mount technology with identical package dimensions (0.260" L x 0.175" W / 6.60mm x 4.45mm) and maximum seated height (0.115" / 2.92mm). No PCB layout modifications are required.

Q: What is the difference in product status between these parts?

A: The SC1608C-102 is obsolete, while the IDCS2512ER102M is active. The active status of the substitute ensures ongoing availability and manufacturing support for future procurement cycles.