PFSM.150.33.2 Equivalent & Substitute Parts

Part Overview

The PFSM.150.33.2 is a polymeric PTC resettable fuse manufactured by SCHURTER Inc., designed for surface mount applications requiring overcurrent protection at 33V with a 1.5A hold current. This component is classified as Active product status and carries AEC-Q200 automotive-grade qualification. Equivalent substitute parts are identified when they maintain identical electrical specifications, mechanical compatibility, and regulatory compliance across the same functional category.

Substiute Parts

PFSM.150.33.2

SCHURTER Inc.In Stock: 2153PFSM.150.33.2 Datasheet

Current PartRFQ

MF-SM150/33-2

Bourns Inc.In Stock: 3679MF-SM150/33-2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PFSM.150.33.2 is determined by strict equivalence across the following critical parameters:

Voltage rating must equal 33V maximum. Current hold specification must equal 1.5A maximum. Current trip specification must equal 3A. Maximum current capacity must equal 40A. Time to trip must equal 5 seconds. Initial resistance must equal 60 mOhms minimum. Post-trip resistance must not exceed 230 mOhms maximum. Operating temperature range must span -40°C to 85°C. Mounting configuration must be surface mount with 2-SMD package. Physical dimensions must match 0.344" L x 0.264" W (8.75mm x 6.71mm). Thickness must not exceed 0.118" (3.00mm). Component type must be polymeric PTC resettable fuse. Regulatory compliance must include AEC-Q200 rating and cURus/TUV approval. RoHS3 compliance is required.

Parameter Comparison

Engineering Selection Recommendations

Both the PFSM.150.33.2 and MF-SM150/33-2 maintain identical electrical and mechanical specifications, making them direct parametric equivalents. Both components carry Active product status, ensuring continued availability and manufacturing support. Both meet AEC-Q200 automotive-grade qualification and carry cURus and TUV approvals. Both comply with ROHS3 requirements. Selection between these parts may be based on packaging format availability: SCHURTER supplies in Tape & Reel format, while Bourns provides Cut Tape and Digi-Reel® options. Inventory availability and lead time considerations may also influence component selection, with current stock levels at 2104 units for PFSM.150.33.2 and 3652 units for MF-SM150/33-2.

Frequently Asked Questions (FAQ)

Q: Are PFSM.150.33.2 and MF-SM150/33-2 electrically interchangeable?

A: Yes. Both components share identical voltage rating (33V), current hold specification (1.5A), current trip specification (3A), maximum current capacity (40A), time to trip (5s), initial resistance (60 mOhms minimum), and post-trip resistance (230 mOhms maximum). Operating temperature ranges are identical at -40°C to 85°C.

Q: Do these parts have the same physical footprint?

A: Yes. Both components use 2-SMD surface mount packaging with identical dimensions of 0.344" L x 0.264" W (8.75mm x 6.71mm) and maximum thickness of 0.118" (3.00mm). PCB layout compatibility is maintained.

Q: What is the difference between these substitute parts?

A: The primary differences are manufacturer identity and packaging format. SCHURTER supplies PFSM.150.33.2 in Tape & Reel format, while Bourns supplies MF-SM150/33-2 in Cut Tape and Digi-Reel® formats. Electrical and mechanical specifications are identical.

Q: Are both parts qualified for automotive applications?

A: Yes. Both components carry AEC-Q200 automotive-grade qualification and meet cURus and TUV approval requirements.

Q: Do both parts comply with environmental regulations?

A: Yes. Both PFSM.150.33.2 and MF-SM150/33-2 are ROHS3 compliant and REACH unaffected.