FMP1T148 Equivalent & Substitute Parts

Part Overview

The FMP1T148 is a single-phase bridge rectifier manufactured by Rohm Semiconductor, rated for 80 V peak reverse voltage with 25 mA average rectified current. This component is designed for surface mount applications in SC-74A, SOT-753 package configuration. The part maintains Active product status with full ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Alternative equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring single-phase rectification at specified voltage and current ratings.

Substiute Parts

FMP1T148

Rohm SemiconductorIn Stock: 23251FMP1T148 Datasheet

Current PartRFQ

FMN1T148

Rohm SemiconductorIn Stock: 18308FMN1T148 Datasheet

Parametric EquivalentRFQ

1SS308(TE85L,F

Toshiba Semiconductor and StorageIn Stock: 115331SS308(TE85L,F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FMP1T148 are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalent (FMN1T148): This Rohm Semiconductor part maintains identical electrical specifications across all critical parameters: 80 V peak reverse voltage, 25 mA average rectified current, 900 mV forward voltage at 5 mA, and 100 nA reverse leakage at 70 V. The package configuration (SC-74A, SOT-753) and mounting type (Surface Mount) are identical. The only distinction is the supplier device package designation (SMT5 versus SMD5), which represents a packaging variant within the same physical form factor. This part qualifies as a direct parametric equivalent.

Similar Substitute (1SS308(TE85L,F): This Toshiba Semiconductor part shares the same package footprint (SC-74A, SOT-753) and peak reverse voltage rating (80 V). However, it is configured as a 4-diode common anode array rather than a bridge rectifier, with per-diode current rating of 100 mA and forward voltage of 1.2 V @ 100 mA. This part is classified as a similar substitute suitable for applications where the diode array configuration can replace the bridge rectifier function, provided circuit design accommodates the different topology and electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

FMN1T148 Selection: This part is recommended as the primary substitute for the FMP1T148. Both components are manufactured by Rohm Semiconductor with identical electrical specifications, compliance certifications (ROHS3, REACH Unaffected), and package footprint. The SMT5 and SMD5 package designations represent equivalent supplier packaging variants. Selection of FMN1T148 maintains full functional and thermal compatibility with designs specified for FMP1T148.

1SS308(TE85L,F) Selection: This part is suitable as a secondary substitute only in applications where circuit topology permits replacement of a bridge rectifier with a 4-diode common anode array. The 80 V voltage rating matches the primary part; however, the higher per-diode current capability (100 mA versus 25 mA), increased forward voltage (1.2 V @ 100 mA versus 900 mV @ 5 mA), and lower maximum junction temperature (125°C versus 150°C) require circuit-level evaluation. This part is appropriate for designs with sufficient thermal margin and where the diode array configuration is functionally equivalent to the bridge rectifier topology.

Frequently Asked Questions (FAQ)

Q: Can FMN1T148 be used as a direct replacement for FMP1T148?

A: Yes. FMN1T148 is a parametric equivalent with identical electrical specifications, voltage ratings, current ratings, forward voltage characteristics, and reverse leakage performance. Both parts share the same SC-74A, SOT-753 package footprint and surface mount configuration. The SMT5 and SMD5 package designations are supplier variants of the same physical form factor.

Q: What is the key difference between FMP1T148 and 1SS308(TE85L,F)?

A: FMP1T148 is a single-phase bridge rectifier, while 1SS308(TE85L,F) is a 4-diode common anode array. The bridge rectifier provides integrated full-wave rectification in a single component, whereas the diode array requires external circuit configuration to achieve equivalent rectification. Additionally, 1SS308(TE85L,F) has higher per-diode current (100 mA), higher forward voltage (1.2 V @ 100 mA), and lower maximum junction temperature (125°C).

Q: Are all three parts pin-compatible?

A: FMP1T148 and FMN1T148 share identical pin configurations within the SC-74A, SOT-753 package. The 1SS308(TE85L,F) uses the same package footprint but has a different internal diode configuration (4-diode array versus bridge rectifier), requiring circuit design evaluation for functional compatibility.

Q: Do all parts meet the same compliance requirements?

A: Yes. FMP1T148, FMN1T148, and 1SS308(TE85L,F) are all ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8541.10.0070. All parts have MSL 1 (Unlimited) moisture sensitivity level.

Q: Which part should be selected for thermal-constrained applications?

A: FMP1T148 and FMN1T148 are rated to 150°C junction temperature, providing superior thermal performance compared to 1SS308(TE85L,F) at 125°C maximum. For applications operating near thermal limits, FMP1T148 or FMN1T148 are the appropriate selections.