SCRH64B-120 Equivalent & Substitute Parts

Part Overview

The SCRH64B-120 is a 12 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 1.22 A with a maximum DC resistance of 130mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The part operates across the industrial temperature range of -40°C to 125°C and meets ROHS3 compliance requirements.

Key Parameters

Parameter	Value
Inductance	12 µH
Inductance Tolerance	±20%
Current Rating	1.22 A
DC Resistance (DCR)	130mOhm Max
Shielding	Shielded
Mounting Type	Surface Mount
Operating Temperature Range	-40°C ~ 125°C
Package Type	Nonstandard
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the SCRH64B-120 is determined by the following critical parameters:

Inductance Value: Must be 12 µH (exact match required)
Current Rating: Substitute must support minimum 1.2 A (acceptable reduction from 1.22 A within operational margin)
DC Resistance: Maximum 130mOhm (lower values acceptable; higher values not acceptable)
Shielding: Must be shielded construction
Mounting: Surface mount configuration required
Temperature Range: Minimum -40°C to 100°C acceptable (original supports to 125°C)
Compliance: ROHS3 compliance required

Two active substitute parts meet these criteria: CDRH5D28RNP-120NC and CDRH64BNP-120MC-B, both manufactured by Sumida America Components Inc.

Parameter Comparison

Parameter	SCRH64B-120 (Main)	CDRH5D28RNP-120NC	CDRH64BNP-120MC-B
Manufacturer	Signal Transformer	Sumida America Components Inc.	Sumida America Components Inc.
Product Status	Obsolete	Active	Active
Inductance	12 µH	12 µH	12 µH
Inductance Tolerance	±20%	±30%	±20%
Current Rating (Amps)	1.22 A	1.2 A	1.2 A
DC Resistance (DCR)	130mOhm Max	71.6mOhm Max	130mOhm Max
Shielding	Shielded	Shielded	Shielded
Operating Temperature	-40°C ~ 125°C	-40°C ~ 100°C	-40°C ~ 100°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	Nonstandard	Nonstandard	Nonstandard
Size / Dimension	0.256" L x 0.252" W (6.50mm x 6.40mm)	0.236" L x 0.232" W (6.00mm x 5.90mm)	0.244" L x 0.232" W (6.20mm x 5.90mm)
Height - Seated (Max)	0.205" (5.20mm)	0.118" (3.00mm)	0.197" (5.00mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	-	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

Both substitute parts are manufactured by Sumida America Components Inc. and carry active product status, ensuring long-term availability and supply chain stability compared to the obsolete SCRH64B-120.

CDRH64BNP-120MC-B is the primary substitute recommendation. It maintains identical inductance tolerance (±20%), matching DC resistance specification (130mOhm Max), and equivalent current rating (1.2 A). Physical dimensions are comparable, with height difference of 0.008" (0.20mm). This part provides the closest electrical and mechanical compatibility.

CDRH5D28RNP-120NC is an alternative substitute with superior DC resistance performance (71.6mOhm Max versus 130mOhm Max), resulting in lower power dissipation. However, it features wider inductance tolerance (±30% versus ±20%) and significantly reduced height (0.118" versus 0.205"), which may impact PCB layout compatibility. This option is suitable for applications where lower resistance and compact form factor are advantageous.

Both substitutes operate within -40°C to 100°C, which covers the lower portion of the original part's temperature range. Applications requiring operation above 100°C require alternative evaluation.

All three parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can CDRH5D28RNP-120NC and CDRH64BNP-120MC-B be used interchangeably with SCRH64B-120?

A: Both parts meet the core electrical requirements (12 µH inductance, 1.2 A minimum current rating, shielded construction, surface mount). However, physical dimensions differ. CDRH64BNP-120MC-B offers closer dimensional compatibility. CDRH5D28RNP-120NC has significantly reduced height (3.00mm versus 5.20mm), requiring PCB layout verification.

Q: What is the impact of inductance tolerance differences?

A: SCRH64B-120 and CDRH64BNP-120MC-B both specify ±20% tolerance. CDRH5D28RNP-120NC specifies ±30% tolerance, representing a wider acceptable inductance range. Circuit designs with tight inductance requirements should prioritize CDRH64BNP-120MC-B.

Q: Does DC resistance affect circuit performance?

A: CDRH5D28RNP-120NC provides 71.6mOhm Max resistance, approximately 45% lower than the 130mOhm Max specification of both SCRH64B-120 and CDRH64BNP-120MC-B. Lower resistance reduces power dissipation and heat generation. Applications sensitive to inductor losses benefit from CDRH5D28RNP-120NC.

Q: Are there temperature range limitations?

A: SCRH64B-120 operates to 125°C. Both substitutes operate to 100°C maximum. Applications requiring operation above 100°C cannot use these substitutes without additional thermal analysis.

Q: What packaging considerations apply?

A: CDRH5D28RNP-120NC and CDRH64BNP-120MC-B are supplied in Tape & Reel (TR) format, standard for automated assembly. Verify reel specifications and handling requirements for your manufacturing process.

Q: Are all parts RoHS compliant?

A: Yes. SCRH64B-120, CDRH5D28RNP-120NC, and CDRH64BNP-120MC-B all meet ROHS3 compliance requirements.

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