SCRH124-101 Equivalent & Substitute Parts Reference

Part Overview

The SCRH124-101 is a 100 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 1.36 A continuous current with a maximum DC resistance of 308mOhm. 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 100 kHz inductance applications.

Key Parameters

Parameter	Value
Inductance	100 µH
Inductance Tolerance	±20%
Current Rating	1.36 A
DC Resistance (DCR)	308mOhm Max
Shielding	Shielded
Operating Temperature Range	-40°C ~ 125°C
Mounting Type	Surface Mount
Package Dimensions	12.50mm x 12.50mm x 4.50mm Max
RoHS Status	RoHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SCRH124-101 are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

Inductance value: 100 µH ±20%
DC Resistance: 308mOhm maximum
Current Rating: minimum 1.36 A
Shielding configuration: Shielded
Operating temperature range: -40°C minimum to 125°C maximum
Mounting type: Surface Mount
Package footprint: 12.50mm x 12.50mm base dimensions
RoHS3 compliance

Substitute Classification:

DR124-101-R (Eaton - Electronics Division) qualifies as a direct substitute. This part maintains 100 µH inductance at ±20% tolerance, 308mOhm maximum DCR, shielded configuration, and surface mount compatibility. Current rating of 1.5 A exceeds the 1.36 A requirement. Operating temperature range of -40°C ~ 125°C matches the main part specification. Package dimensions of 12.50mm x 12.50mm x 4.50mm are identical.

UP2B-101-R (Eaton - Electronics Division) is listed as an alternative but does not fully meet substitution criteria. While it maintains 100 µH inductance and ±20% tolerance, it is unshielded (versus shielded requirement), has a lower current rating of 1.2 A (below 1.36 A requirement), and operates only to 85°C maximum (below 125°C requirement). Package dimensions also differ at 13.97mm x 10.41mm x 6.00mm.

Parameter Comparison

Parameter	SCRH124-101 (Main)	DR124-101-R (Substitute)	UP2B-101-R (Alternative)
Manufacturer	Signal Transformer	Eaton - Electronics Division	Eaton - Electronics Division
Series	SCRH124	DR124	UNI-PAC™
Inductance	100 µH	100 µH	100 µH
Inductance Tolerance	±20%	±20%	±20%
Current Rating (Amps)	1.36 A	1.5 A	1.2 A
Current - Saturation (Isat)	1.2A	1.79A	950mA
DC Resistance (DCR)	308mOhm Max	308mOhm Max	270.7mOhm Max
Shielding	Shielded	Shielded	Unshielded
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C
Inductance Frequency - Test	100 kHz	100 kHz	100 kHz
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package Dimensions	12.50mm x 12.50mm	12.50mm x 12.50mm	13.97mm x 10.41mm
Height - Seated (Max)	4.50mm	4.50mm	6.00mm
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active

Engineering Selection Recommendations

DR124-101-R is the qualified substitute for SCRH124-101 applications. Both parts maintain Active product status and RoHS3 compliance. The DR124-101-R provides equivalent electrical performance with identical inductance, tolerance, and DC resistance specifications. The higher current rating of 1.5 A provides additional margin above the 1.36 A requirement. Identical package footprint and height ensure mechanical compatibility in existing PCB layouts. Operating temperature range matches the main part specification across the full -40°C to 125°C range.

UP2B-101-R does not qualify as a substitute for applications requiring shielded inductors or operating at temperatures above 85°C. The unshielded configuration introduces electromagnetic coupling differences. The 1.2 A current rating falls below the 1.36 A requirement. The reduced operating temperature maximum of 85°C restricts use in applications requiring the full -40°C to 125°C range. Package dimension differences require PCB layout modification.

Frequently Asked Questions (FAQ)

Q: Can DR124-101-R replace SCRH124-101 in existing designs without PCB modification?

A: Yes. DR124-101-R maintains identical package footprint (12.50mm x 12.50mm) and height (4.50mm maximum), enabling direct PCB substitution without layout changes.

Q: What is the primary difference between DR124-101-R and UP2B-101-R?

A: DR124-101-R is shielded with a 1.5 A current rating and full -40°C to 125°C temperature range. UP2B-101-R is unshielded with a 1.2 A current rating and limited -40°C to 85°C temperature range. These differences affect electromagnetic isolation and thermal performance.

Q: Why is UP2B-101-R listed if it does not meet substitution criteria?

A: UP2B-101-R is documented as an alternative option for applications where shielding is not required, current demand does not exceed 1.2 A, and operating temperature remains below 85°C. It is not a direct substitute for the SCRH124-101 specification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. Both DR124-101-R and UP2B-101-R are RoHS3 compliant with MSL rating of 1 (Unlimited), matching the main part SCRH124-101 compliance status.

Q: What is the saturation current difference between the main part and DR124-101-R?

A: SCRH124-101 has saturation current (Isat) of 1.2A, while DR124-101-R has 1.79A. The higher saturation current in DR124-101-R provides additional headroom before inductance degradation occurs under peak current conditions.

Q: Can packaging format differences affect component procurement?

A: Yes. SCRH124-101 is supplied in Tape & Reel (TR) format. DR124-101-R is supplied in Cut Tape (CT) & Digi-Reel® format. UP2B-101-R is supplied in Tape & Reel (TR) format. Packaging format may affect minimum order quantities and lead times but does not affect electrical or mechanical compatibility.

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