PCMC135T-2R2MF Equivalent & Substitute Parts

Part Overview

The PCMC135T-2R2MF is a 2.2 µH unshielded surface mount inductor manufactured by Susumu, rated for 20 A continuous current with a maximum DC resistance of 5.5 mOhm. This component is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical performance across the specified inductance, current rating, and DC resistance parameters while accommodating potential differences in shielding configuration and core construction.

Key Parameters

Parameter	Value	Unit	Criticality
Inductance	2.2	µH	Primary
Inductance Tolerance	±20%	%	Primary
Current Rating (Continuous)	20	A	Primary
Current - Saturation (Isat)	32	A	Primary
DC Resistance (DCR) Maximum	5.5	mOhm	Primary
Inductance Test Frequency	100	kHz	Secondary
Mounting Type	Surface Mount	-	Primary
Package Type	Nonstandard	-	Primary
Shielding	Unshielded	-	Secondary
RoHS Status	ROHS3 Compliant	-	Compliance
Moisture Sensitivity Level	1 (Unlimited)	-	Handling

Substitute Part Grouping Explanation

Substitution of the PCMC135T-2R2MF is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

Inductance value of 2.2 µH at 100 kHz test frequency
Inductance tolerance of ±20%
Continuous current rating of 20 A minimum
Saturation current (Isat) of 32 A minimum
DC resistance (DCR) not exceeding 5.5 mOhm
Surface mount configuration
Nonstandard package dimensions compatible with PCB layout

Secondary Compatibility Factors:

Shielding configuration (unshielded primary, shielded acceptable with electromagnetic isolation verification)
Operating temperature range (if specified in application requirements)
RoHS3 compliance and MSL rating

The identified substitute parts BMMA001313502R2MX1 and HCM1305-2R2-R satisfy all primary electrical parameters. Both are active products with confirmed inventory availability, addressing the obsolescence status of the original PCMC135T-2R2MF.

Parameter Comparison

Parameter	PCMC135T-2R2MF (Main)	BMMA001313502R2MX1 (Substitute)	HCM1305-2R2-R (Substitute)
Manufacturer	Susumu	Pulse Electronics	Eaton - Electronics Division
Product Status	Obsolete	Active	Active
Inductance	2.2 µH	2.2 µH	2.2 µH
Inductance Tolerance	±20%	±20%	±20%
Current Rating	20 A	20 A	20 A
Saturation Current (Isat)	32 A	32 A	32 A
DC Resistance (DCR) Max	5.5 mOhm	5.5 mOhm	5.29 mOhm
Shielding	Unshielded	Shielded	Shielded
Core Type	-	Molded	Drum Core, Wirewound (Iron Powder)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package Type	Nonstandard	Nonstandard	Nonstandard
Size (L x W)	13.45 x 12.60 mm	13.20 x 12.90 mm	13.30 x 12.20 mm
Height (Seated Max)	4.80 mm	5.00 mm	5.00 mm
Operating Temperature	-	-55°C ~ 125°C	-55°C ~ 125°C
Inductance Test Frequency	100 kHz	100 kHz	100 kHz
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging	-	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

BMMA001313502R2MX1 (Pulse Electronics)

This substitute is an active product with 915 units in stock. It maintains all primary electrical specifications: 2.2 µH inductance, 20 A continuous current rating, 32 A saturation current, and 5.5 mOhm maximum DC resistance. The molded construction provides shielded performance, which reduces electromagnetic coupling to adjacent circuit elements compared to the unshielded original. Physical dimensions (13.20 x 12.90 x 5.00 mm) are within acceptable tolerance of the original footprint. RoHS3 compliance and MSL 1 rating match the original specification. This part is suitable for applications where electromagnetic isolation is beneficial or neutral.

HCM1305-2R2-R (Eaton - Electronics Division)

This substitute is an active product with 9017 units in stock, offering the highest inventory availability. It exceeds electrical specifications with a DC resistance of 5.29 mOhm, which is lower than the 5.5 mOhm maximum, resulting in reduced power dissipation. The drum core wirewound construction with iron powder core provides shielded performance. Physical dimensions (13.30 x 12.20 x 5.00 mm) are compatible with the original layout. Operating temperature range of -55°C to 125°C is specified. RoHS3 compliance and MSL 1 rating are confirmed. This part is suitable for applications requiring lower DC resistance and extended temperature operation.

Both substitutes are compliant with RoHS3 and REACH requirements. Selection between them depends on electromagnetic isolation requirements and DC resistance optimization for the specific application circuit.

Frequently Asked Questions (FAQ)

Q: Can BMMA001313502R2MX1 or HCM1305-2R2-R be used as direct replacements for PCMC135T-2R2MF?

A: Both parts satisfy the primary electrical parameters: 2.2 µH inductance, 20 A continuous current, 32 A saturation current, and DC resistance within specification. Physical dimensions are compatible with nonstandard surface mount layouts. The primary difference is shielding configuration; both substitutes are shielded, whereas the original is unshielded. This change reduces electromagnetic coupling and is generally compatible with existing designs unless the circuit specifically requires unshielded operation.

Q: What is the impact of switching from unshielded to shielded inductors?

A: Shielded inductors reduce magnetic field radiation to adjacent components, decreasing electromagnetic interference (EMI) coupling. In most applications, this is beneficial. However, if the original design relied on magnetic coupling between the inductor and other components, shielding may alter circuit behavior. Circuit-level analysis is required only if magnetic coupling is intentional in the design.

Q: Are the physical dimensions of the substitutes compatible with the original PCB layout?

A: The substitute parts have nonstandard packages with dimensions within 0.25 mm of the original in length and width, and 0.20 mm in height. These tolerances are within typical PCB design margins for surface mount components. Verification of specific PCB footprint compatibility is required based on design layout constraints.

Q: What is the difference between the molded construction of BMMA001313502R2MX1 and the drum core wirewound construction of HCM1305-2R2-R?

A: Molded inductors (BMMA series) use a molded compound encapsulation, while drum core wirewound inductors (HCM series) use a traditional iron powder core with wire windings. Both achieve the specified electrical performance. The HCM1305-2R2-R offers slightly lower DC resistance (5.29 mOhm vs. 5.5 mOhm), reducing power dissipation. Selection depends on thermal management and cost considerations specific to the application.

Q: Are both substitutes available in the same packaging format?

A: Both BMMA001313502R2MX1 and HCM1305-2R2-R are supplied in Tape & Reel (TR) packaging, which is standard for high-volume surface mount assembly. The original PCMC135T-2R2MF packaging format is not specified in the available data. Tape & Reel packaging is compatible with automated pick-and-place assembly equipment.

Q: Do the substitutes meet the same compliance standards as the original?

A: Yes. Both BMMA001313502R2MX1 and HCM1305-2R2-R are RoHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. Moisture Sensitivity Level is 1 (Unlimited) for both, matching the original specification. These certifications confirm suitability for regulated applications.

Q: What is the inventory status of the substitute parts?

A: BMMA001313502R2MX1 has 915 units in stock. HCM1305-2R2-R has 9017 units in stock. Both are active products with confirmed availability, addressing the obsolescence of the original PCMC135T-2R2MF (1263 units in stock, obsolete status).

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