ACM2012-201-2P-T002 Equivalent & Substitute Parts

Part Overview

The ACM2012-201-2P-T002 is a 2-line common mode choke (CMC) surface mount component manufactured by TDK Corporation. It provides 200 Ohms impedance at 100 MHz with a maximum current rating of 350mA and DC resistance of 250mOhm. The component is rated for 50V DC operation across an operating temperature range of -40°C to 85°C.

This part carries a "Not For New Designs" product status, indicating it has been superseded or discontinued for new applications. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support existing production requirements.

Substiute Parts

ACM2012-201-2P-T002

TDK CorporationIn Stock: 140282ACM2012-201-2P-T002 Datasheet

Current PartRFQ

BWCU00201212201M02

Pulse ElectronicsIn Stock: 1027BWCU00201212201M02 Datasheet

MFR RecommendedRFQ

SRF2012-201YA

Bourns Inc.In Stock: 3501SRF2012-201YA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ACM2012-201-2P-T002 are qualified based on the following critical parameters:

• Impedance Match: 200 Ohms @ 100 MHz (exact match required)
• Number of Lines: 2-line configuration (exact match required)
• Current Rating: Minimum 330mA (ACM2012 rated at 350mA; substitutes must support the application current demand)
• DC Resistance: Maximum 400mOhm (ACM2012 at 250mOhm; higher DCR acceptable within thermal and performance constraints)
• Voltage Rating: Minimum 50V DC (all candidates meet or exceed this requirement)
• Mounting Type: Surface Mount (exact match required)
• Package / Case: Horizontal, 4 PC Pad (exact match required)
• RoHS & Compliance: ROHS3 Compliant, REACH Unaffected (all candidates meet these requirements)

Two substitute parts meet these criteria: BWCU00201212201M02 (Pulse Electronics) and SRF2012-201YA (Bourns Inc.). Both maintain the core electrical specifications while offering active product status and extended operating temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

BWCU00201212201M02 (Pulse Electronics) is the primary substitute candidate. It maintains the 200 Ohms @ 100 MHz impedance specification with a 330mA current rating, representing a 5.7% reduction from the original 350mA specification. The DCR increases to 350mOhm (40% higher than the original 250mOhm). The operating temperature range extends to 105°C, providing improved thermal margin. Physical dimensions increase marginally (2.05mm x 1.25mm vs. 2.00mm x 1.20mm), and height increases to 1.40mm. This part carries Active product status and maintains full ROHS3 and REACH compliance.

SRF2012-201YA (Bourns Inc.) is the secondary substitute candidate. It maintains identical impedance and 2-line configuration with a 300mA current rating, representing an 14.3% reduction from the original specification. The DCR increases to 400mOhm (60% higher than the original). The operating temperature range extends to 125°C, providing maximum thermal margin. Physical dimensions match the original footprint (2.00mm x 1.20mm), with height at 1.40mm. This part carries Active product status and maintains full ROHS3 and REACH compliance.

Selection between these substitutes depends on application current requirements and thermal design constraints. Applications requiring the full 350mA specification should prioritize BWCU00201212201M02. Applications with lower current demands or requiring extended temperature operation may select SRF2012-201YA.

Frequently Asked Questions (FAQ)

Q: Can ACM2012-201-2P-T002 be directly replaced with BWCU00201212201M02?

A: Yes, with current derating consideration. The BWCU00201212201M02 provides the same 200 Ohms @ 100 MHz impedance and 2-line configuration. The current rating is 330mA versus the original 350mA. If your application operates below 330mA, direct substitution is valid. The DCR increases from 250mOhm to 350mOhm, which may increase power dissipation in high-current scenarios.

Q: What are the physical compatibility considerations for substitution?

A: The SRF2012-201YA maintains the original footprint (2.00mm x 1.20mm), making it a direct PCB layout replacement. The BWCU00201212201M02 has slightly larger dimensions (2.05mm x 1.25mm) and may require minor PCB layout adjustment. Both substitutes increase height to 1.40mm compared to the original 1.30mm; verify clearance in your assembly design.

Q: How do DCR differences affect circuit performance?

A: The original ACM2012-201-2P-T002 has 250mOhm DCR. BWCU00201212201M02 increases this to 350mOhm, and SRF2012-201YA to 400mOhm. Higher DCR results in increased resistive losses and heat generation, particularly at higher currents. Calculate power dissipation (P = I²R) for your specific current to determine thermal impact. If thermal margin is critical, BWCU00201212201M02 is preferred over SRF2012-201YA.

Q: Are both substitutes suitable for new designs?

A: Yes. Both BWCU00201212201M02 and SRF2012-201YA carry Active product status, making them appropriate for new design implementations. The original ACM2012-201-2P-T002 is marked "Not For New Designs" and should not be used in new applications.

Q: What compliance certifications apply to these substitutes?

A: All three parts (original and both substitutes) are ROHS3 Compliant and REACH Unaffected. Moisture Sensitivity Level is 1 (Unlimited) for all parts, indicating no special moisture handling requirements during storage or assembly.