SCRH127B-270 Equivalent & Substitute Parts

Part Overview

The SCRH127B-270 is a 27 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. 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

SCRH127B-270

Signal TransformerIn Stock: 726SCRH127B-270 Datasheet

Current PartRFQ

ASPI-1207S-270M-T

Abracon LLCIn Stock: 1369ASPI-1207S-270M-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The ASPI-1207S-270M-T qualifies as a direct substitute based on the following alignment of critical parameters:

• Inductance value matches at 27 µH with identical ±20% tolerance
• Current rating of 3.4 A remains within acceptable operating range for the 3.6 A primary specification
• DC resistance of 46 mOhm Max is equivalent to the 45.9 mOhm Max specification, with negligible difference
• Shielded construction maintained for electromagnetic isolation
• Operating temperature range identical at -40°C to 125°C
• Surface mount configuration with nonstandard package dimensions
• RoHS3 compliance and MSL 1 rating preserved
• Both components are Active status products

Parameter Comparison

Engineering Selection Recommendations

Both the SCRH127B-270 and ASPI-1207S-270M-T maintain Active product status with full regulatory compliance. The ASPI-1207S-270M-T is classified as a wirewound construction type, whereas the SCRH127B-270 type is not specified. The current rating differential of 0.2 A (3.6 A versus 3.4 A) is within acceptable substitution parameters for applications not operating at maximum rated current. DC resistance values are functionally equivalent. Both components satisfy RoHS3 and REACH compliance requirements with identical MSL 1 ratings. Physical dimensions differ slightly (12.50mm versus 12.00mm), with height remaining constant at 8.00 mm maximum.

Frequently Asked Questions (FAQ)

Q: Can the ASPI-1207S-270M-T replace the SCRH127B-270 in all applications?

A: The ASPI-1207S-270M-T is electrically equivalent for inductance, tolerance, and DC resistance specifications. The 0.2 A lower current rating (3.4 A versus 3.6 A) requires verification that circuit operating current does not exceed 3.4 A. Physical dimensions differ by 0.50 mm in length and width; PCB layout compatibility must be confirmed.

Q: What is the significance of the ±20% inductance tolerance?

A: The ±20% tolerance indicates that actual inductance values may range from 21.6 µH to 32.4 µH. Both the primary and substitute parts share this tolerance specification, ensuring equivalent performance variation across the component population.

Q: Are there differences in construction between these inductors?

A: The ASPI-1207S-270M-T is specified as wirewound construction. The SCRH127B-270 construction type is not provided in the available parameters. Both maintain shielded configuration for electromagnetic isolation.

Q: How do the DC resistance values compare?

A: The SCRH127B-270 specifies 45.9 mOhm Max, while the ASPI-1207S-270M-T specifies 46 mOhm Max. This 0.1 mOhm difference is negligible for practical circuit applications and falls within normal manufacturing variation.

Q: Are both components suitable for the full -40°C to 125°C temperature range?

A: Yes. Both the SCRH127B-270 and ASPI-1207S-270M-T are rated for identical operating temperature ranges of -40°C to 125°C.

Q: What compliance certifications apply to both parts?

A: Both components are RoHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings. ECCN classification is EAR99 for both parts.