CDRH125-330MC Equivalent & Substitute Parts

Part Overview

The CDRH125-330MC is a 33 µH shielded surface mount inductor manufactured by Sumida America Components Inc., rated for 2.1 A continuous current with a maximum DC resistance of 57 mOhm. This component is classified as obsolete product status. Due to its obsolete classification, identifying equivalent and substitute parts from active manufacturers is essential for ongoing design support, production continuity, and long-term component availability. The substitute parts listed maintain the core electrical and mechanical specifications required for direct replacement in surface mount applications.

Key Parameters

Parameter	Value	Unit
Inductance	33	µH
Inductance Tolerance	±20%	-
Current Rating	2.1	A
DC Resistance (DCR)	57	mOhm Max
Shielding	Shielded	-
Mounting Type	Surface Mount	-
Package Type	Nonstandard	-
Physical Dimensions	12.00 x 12.00 x 6.00	mm (L x W x H)
Operating Temperature Range	-25°C to 80°C	-
Inductance Test Frequency	1	kHz
Moisture Sensitivity Level	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitute parts for the CDRH125-330MC are classified based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

Critical Matching Parameters:

Inductance value: 33 µH
Inductance tolerance: ±20%
Current rating: minimum 2.1 A
DC resistance: maximum 57 mOhm
Shielding: Shielded configuration
Mounting type: Surface Mount
Physical footprint: 12.00 x 12.00 mm base dimensions with 6.00 mm maximum height
Inductance test frequency: 1 kHz

Direct Equivalents maintain all critical parameters identically and are sourced from the same manufacturer (Sumida) or equivalent manufacturers with active product status.

Similar Substitutes maintain the core electrical specifications (inductance, current rating, DCR) and physical form factor but may have enhanced performance characteristics such as higher current saturation ratings, extended temperature ranges, or improved RoHS compliance status. These parts are suitable for applications where the CDRH125-330MC specifications are met or exceeded.

Parameter Comparison

Part Number	Manufacturer	Inductance (µH)	Current Rating (A)	DCR (mOhm Max)	Dimensions (mm)	Height (mm)	Operating Temp (°C)	Product Status	RoHS Compliance
CDRH125-330MC	Sumida America Components Inc.	33	2.1	57	12.00 x 12.00	6.00	-25 to 80	Obsolete	Non-compliant
CDRH125NP-330MC	Sumida America Components Inc.	33	2.1	57	12.00 x 12.00	6.00	-40 to 100	Active	ROHS3 Compliant
PA4304.333NLT	Pulse Electronics	33	2.1	57	12.50 x 12.50	6.00	-40 to 125	Active	ROHS3 Compliant
B82477G2333M000	EPCOS - TDK Electronics	33	2.1	57	12.30 x 12.30	6.00	-55 to 125	Active	ROHS3 Compliant
DR125-330-R	Eaton - Electronics Division	33	3.28	50.5	12.50 x 12.50	6.00	-40 to 125	Active	ROHS3 Compliant
P1170.333NLT	Pulse Electronics	33	2.6	70	12.24 x 12.24	6.00	-40 to 130	Active	ROHS3 Compliant
P1171.333NLT	Pulse Electronics	33	2.6	70	12.24 x 12.24	6.00	-40 to 130	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: CDRH125NP-330MC

The CDRH125NP-330MC is the direct equivalent from Sumida America Components Inc. with active product status. This part maintains identical electrical specifications (33 µH, 2.1 A, 57 mOhm DCR) and physical dimensions (12.00 x 12.00 x 6.00 mm) as the obsolete CDRH125-330MC. The primary advantages are manufacturer continuity, ROHS3 compliance, extended operating temperature range (-40°C to 100°C versus -25°C to 80°C), and confirmed active inventory status (862 pcs available).

Secondary Recommendation: PA4304.333NLT

The PA4304.333NLT from Pulse Electronics provides identical electrical performance with ferrite drum core construction. This part meets all critical substitution parameters with active product status and ROHS3 compliance. The operating temperature range extends to -40°C to 125°C, and physical dimensions (12.50 x 12.50 x 6.00 mm) remain within acceptable tolerance for standard surface mount PCB layouts.

Alternative Recommendation: B82477G2333M000

The B82477G2333M000 from EPCOS - TDK Electronics (TDK group) maintains identical electrical specifications with ferrite drum core construction. This part offers the widest operating temperature range (-55°C to 125°C) and is suitable for applications requiring extended thermal performance. Physical dimensions (12.30 x 12.30 x 6.00 mm) are compatible with standard surface mount assembly processes.

Higher Current Capability: DR125-330-R

The DR125-330-R from Eaton Electronics Division provides enhanced current rating (3.28 A versus 2.1 A) and improved DC resistance (50.5 mOhm versus 57 mOhm maximum). This part is suitable for applications where the original specification can be exceeded without circuit modification. Physical dimensions (12.50 x 12.50 x 6.00 mm) and operating temperature range (-40°C to 125°C) support standard industrial applications.

Compliance Consideration:

All recommended substitute parts carry ROHS3 compliance certification, addressing regulatory requirements that the obsolete CDRH125-330MC does not meet. Selection should prioritize CDRH125NP-330MC for direct replacement, with alternatives selected based on specific thermal, current, or dimensional requirements of the target application.

Frequently Asked Questions (FAQ)

Q1: Can CDRH125NP-330MC directly replace CDRH125-330MC without circuit modification?

A: Yes. The CDRH125NP-330MC maintains identical inductance (33 µH ±20%), current rating (2.1 A), DC resistance (57 mOhm maximum), and physical dimensions (12.00 x 12.00 x 6.00 mm). The primary differences are product status (active versus obsolete), RoHS compliance (ROHS3 versus non-compliant), and extended operating temperature range (-40°C to 100°C versus -25°C to 80°C). No circuit redesign is required.

Q2: What is the difference between "Direct Equivalent" and "Similar Substitute" classifications?

A: Direct equivalents maintain all electrical and mechanical specifications identically and are sourced from the same manufacturer or equivalent manufacturers with active product status. Similar substitutes maintain core electrical specifications (inductance, current rating, DCR) and physical form factor but may have enhanced performance characteristics such as higher current saturation ratings, extended temperature ranges, or different core materials. Similar substitutes are suitable when the original specification is met or exceeded.

Q3: Are PA4304.333NLT and B82477G2333M000 compatible with the original PCB layout?

A: Both parts are compatible with standard surface mount PCB layouts. PA4304.333NLT dimensions are 12.50 x 12.50 x 6.00 mm, and B82477G2333M000 dimensions are 12.30 x 12.30 x 6.00 mm. These represent minor variations from the original 12.00 x 12.00 x 6.00 mm footprint. Verify PCB pad spacing and clearance requirements before assembly. Height (6.00 mm maximum) is identical across all parts.

Q4: Why do P1170.333NLT and P1171.333NLT have higher DC resistance (70 mOhm) than the original specification (57 mOhm)?

A: P1170.333NLT and P1171.333NLT are wirewound inductors with higher current ratings (2.6 A) and extended operating temperature ranges (-40°C to 130°C). The increased DC resistance reflects the wirewound construction and enhanced thermal performance. These parts are classified as similar substitutes suitable for applications where the original 57 mOhm specification can be exceeded without circuit performance degradation.

Q5: What is the significance of the inductance test frequency (1 kHz versus 100 kHz)?

A: The inductance test frequency indicates the measurement condition for the specified inductance value. CDRH125-330MC, CDRH125NP-330MC, PA4304.333NLT, and B82477G2333M000 are tested at 1 kHz. P1170.333NLT, P1171.333NLT, and DR125-330-R are tested at 100 kHz. For applications operating at frequencies significantly different from the test frequency, inductor impedance characteristics may vary. Verify frequency response requirements for critical applications.

Q6: Is RoHS compliance mandatory for substitute part selection?

A: RoHS compliance is a regulatory requirement in many markets and applications. The original CDRH125-330MC is RoHS non-compliant. All recommended substitute parts (CDRH125NP-330MC, PA4304.333NLT, B82477G2333M000, DR125-330-R, P1170.333NLT, P1171.333NLT) carry ROHS3 compliance certification. Selection of RoHS-compliant parts is recommended for new designs and applications subject to regulatory requirements.

Q7: Can DR125-330-R be used in applications designed for 2.1 A current rating?

A: Yes. The DR125-330-R has a current rating of 3.28 A, which exceeds the original 2.1 A specification. This part can be used in applications designed for 2.1 A without circuit modification. The improved current capability and lower DC resistance (50.5 mOhm versus 57 mOhm) provide enhanced thermal performance and reduced power dissipation in the inductor.

Q8: What packaging formats are available for substitute parts?

A: CDRH125-330MC is supplied in standard packaging (format not specified). CDRH125NP-330MC, PA4304.333NLT, B82477G2333M000, DR125-330-R, and P1170.333NLT are supplied in Tape & Reel (TR) format suitable for automated assembly. P1171.333NLT packaging format is not specified in available data. Verify packaging requirements with procurement and assembly processes before final part selection.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message