PM5022S-151M Equivalent & Substitute Parts

Part Overview

The PM5022S-151M is a 150 µH shielded drum core, wirewound inductor manufactured by Bourns Inc., rated for 1.3 A with a maximum DC resistance of 293mOhm. This component operates across the temperature range of -40°C to 85°C and is designed for surface mount applications in nonstandard package configurations. The part is currently obsolete, making equivalent and substitute components necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Inductance	150 µH
Inductance Tolerance	±20%
Current Rating	1.3 A
Current - Saturation (Isat)	2.1 A
DC Resistance (DCR)	293 mOhm Max
Shielding	Shielded
Core Material	Ferrite
Core Type	Drum Core, Wirewound
Operating Temperature	-40°C to 85°C
Mounting Type	Surface Mount
Physical Dimensions	18.60mm L × 15.30mm W × 7.60mm H

Substitute Part Grouping Explanation

Substitution eligibility for the PM5022S-151M is determined by the following critical parameters:

Inductance Value: Must be 150 µH with ±20% tolerance
Shielding Configuration: Must be shielded to maintain electromagnetic isolation
Core Type: Ferrite drum core, wirewound construction
Current Rating: Minimum 1.3 A continuous rating
DC Resistance: Maximum 293 mOhm to ensure acceptable power dissipation
Saturation Current (Isat): Minimum 2.1 A to prevent core saturation under transient conditions
Mounting Type: Surface mount, nonstandard package
Operating Temperature Range: Must support -40°C to 85°C minimum

Substitute parts are classified into two categories:

Direct Substitutes maintain electrical and mechanical compatibility with the original specification. These parts can replace the PM5022S-151M without circuit redesign.

Similar Substitutes meet the core electrical requirements but may have minor variations in DC resistance, saturation current, or physical dimensions. These require verification of circuit tolerance to these parameter variations.

Parameter Comparison

Parameter	PM5022S-151M	PM5022S-151M-RC	SRR1806-151M	UP5S-151-R	ASPI-1306S-151M-T	UP3B-151-R
Manufacturer	Bourns Inc.	Bourns Inc.	Bourns Inc.	Eaton - Electronics Division	Abracon LLC	Eaton - Electronics Division
Inductance	150 µH	150 µH	150 µH	150 µH	150 µH	150 µH
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%
Current Rating (A)	1.3	1.05	1.05	1.35	1.3	1.2
Isat (A)	2.1	2.3	2.3	2.0	2.1	1.4
DC Resistance (mOhm)	293 Max	400	400	220 Max	293 Max	296 Max
Shielding	Shielded	Shielded	Shielded	Shielded	Shielded	Unshielded
Core Type	Drum Core, Wirewound	Drum Core, Wirewound	Drum Core, Wirewound	Wirewound	Drum Core, Wirewound	Drum Core, Wirewound
Core Material	Ferrite	Ferrite	Ferrite	Not specified	Ferrite	Ferrite
Operating Temperature	-40°C to 85°C	-40°C to 125°C	-40°C to 125°C	-25°C to 85°C	-40°C to 85°C	-40°C to 85°C
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant
Dimensions (mm)	18.60 L × 15.30 W × 7.60 H	18.30 L × 14.00 W × 7.10 H	18.30 L × 14.00 W × 7.10 H	18.40 L × 15.00 W × 7.50 H	18.54 L × 15.24 W × 7.62 H	19.30 L × 13.21 W × 6.80 H
Inventory Status	1045 Pcs	661 Pcs	1998 Pcs	799 Pcs	887 Pcs	1032 Pcs

Engineering Selection Recommendations

PM5022S-151M-RC (Bourns Inc.) and SRR1806-151M (Bourns Inc.) are direct substitutes from the original manufacturer. Both are ROHS3 compliant and active products with extended operating temperature ranges to 125°C. PM5022S-151M-RC exhibits higher DC resistance at 400 mOhm and reduced current rating at 1.05 A, requiring circuit verification for power dissipation tolerance. SRR1806-151M shares identical electrical specifications with PM5022S-151M-RC and offers the highest inventory availability at 1998 pieces.

ASPI-1306S-151M-T (Abracon LLC) provides the closest electrical match to the original PM5022S-151M, maintaining identical current rating (1.3 A), saturation current (2.1 A), and DC resistance (293 mOhm Max). This part is ROHS3 compliant and active. Physical dimensions are nearly identical, with only 0.04mm variation in length and 0.02mm in height.

UP5S-151-R (Eaton - Electronics Division) offers superior current rating at 1.35 A and lower DC resistance at 220 mOhm Max, providing better thermal performance. This part is ROHS3 compliant and active. Operating temperature range is limited to -25°C to 85°C, which may restrict use in applications requiring full -40°C operation.

UP3B-151-R (Eaton - Electronics Division) is an unshielded alternative with comparable electrical specifications. This configuration is unsuitable for applications requiring electromagnetic shielding and should only be considered in designs where shielding is not a functional requirement.

Frequently Asked Questions (FAQ)

Q: Can PM5022S-151M-RC directly replace PM5022S-151M in all applications?

A: PM5022S-151M-RC maintains shielding, core type, and inductance value. However, the increased DC resistance (400 mOhm vs. 293 mOhm) and reduced current rating (1.05 A vs. 1.3 A) require verification that circuit current demands and thermal dissipation limits remain within acceptable margins.

Q: What is the primary difference between PM5022S-151M-RC and SRR1806-151M?

A: Both parts share identical electrical specifications and are manufactured by Bourns Inc. The distinction is in series designation and base product number. SRR1806-151M offers higher inventory availability and can be selected based on supply chain considerations.

Q: Is ASPI-1306S-151M-T a suitable replacement for the original PM5022S-151M?

A: Yes. ASPI-1306S-151M-T matches the original part in current rating (1.3 A), saturation current (2.1 A), and DC resistance (293 mOhm Max). Physical dimensions are within 0.04mm tolerance. This part is ROHS3 compliant and currently active.

Q: Why is UP3B-151-R listed as a similar substitute rather than a direct substitute?

A: UP3B-151-R is unshielded, whereas the original PM5022S-151M is shielded. Unshielded inductors exhibit different electromagnetic coupling characteristics and are unsuitable for applications requiring electromagnetic isolation. This part should only be considered if shielding is not a circuit requirement.

Q: What are the temperature range implications when selecting a substitute?

A: The original PM5022S-151M operates from -40°C to 85°C. PM5022S-151M-RC and SRR1806-151M extend to 125°C, providing additional thermal margin. UP5S-151-R is limited to -25°C to 85°C and cannot support full low-temperature operation. Application requirements must determine acceptable temperature range.

Q: How do DC resistance differences affect circuit performance?

A: DC resistance directly impacts power dissipation and voltage drop across the inductor. PM5022S-151M-RC and SRR1806-151M at 400 mOhm dissipate approximately 36% more power than the original at 293 mOhm when carrying rated current. UP5S-151-R at 220 mOhm dissipates approximately 25% less power. Circuit thermal analysis must confirm acceptability of these variations.

Q: Are all substitute parts RoHS compliant?

A: The original PM5022S-151M is RoHS non-compliant. All active substitute parts (PM5022S-151M-RC, SRR1806-151M, UP5S-151-R, ASPI-1306S-151M-T, and UP3B-151-R) are RoHS3 compliant or RoHS compliant, meeting current environmental regulations.

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