VRF148A Equivalent & Substitute Parts Reference

Part Overview

VRF148A is an N-Channel RF MOSFET transistor designed for RF applications at 175MHz with a gain of 16dB and output power of 30W, operating at a 50V test voltage. The device is classified as obsolete by the manufacturer (Microchip Technology). Given its product status as obsolete and the presence of remaining inventory only, identification of alternative models with matching functional parameters within the Transistors, FETs, MOSFETs category is required for designs, repair, or stocking to ensure backward compatibility and supply continuity.

Substiute Parts

VRF148A

Microchip TechnologyIn Stock: 704VRF148A Datasheet

Current PartRFQ

SD4931

STMicroelectronicsIn Stock: 2275SD4931 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts listed are grouped strictly by matching core electrical and mechanical characteristics required for direct replacement in RF MOSFET applications. Only parts classified as MOSFETs, N-Channel, with frequency rating at 175MHz, similar gain, operate at a test voltage of 50V, and suitable package/case style are included. These parameters ensure the substitute parts are suitable for similar RF circuit requirements, interfacing, and assembly. Device compliance details such as MSL and REACH/ECCN match ensure supply chain and regulatory requirements are met.

Parameter Comparison

Engineering Selection Recommendations

Selection of substitute parts is determined by matching electrical function, operational frequency, gain, voltage and current parameters, and compliance requirements. VRF148A is Obsolete; SD4931 is Active. Both are REACH Unaffected and have MSL 1 (Unlimited). Both comply with EAR99 export regulations. Consistent packaging and compliance features support direct interchangeability in supply chains and assembly operations where category and regulatory attributes are strictly required.

Frequently Asked Questions (FAQ)

Q1: What parameters are critical for selecting an RF MOSFET substitute for VRF148A?
A1: Frequency rating, gain, test voltage, MOSFET technology, N-Channel configuration, and package / case are critical.

Q2: Are the package and device footprint identical between VRF148A and SD4931?
A2: VRF148A uses the M113 package; SD4931 uses the M174 package. Package dimensions and assembly requirements should be compared directly.

Q3: How does compliance status affect the choice of substitute?
A3: Both VRF148A and SD4931 are REACH Unaffected, MSL 1 (Unlimited), and classified as EAR99, facilitating compliance in regulated supply chains.

Q4: Is the electrical performance equivalent between VRF148A and SD4931?
A4: Both operate at 175MHz and 50V test voltage, but parameters such as gain, current rating, and power output differ.

Q5: What should be checked regarding physical compatibility?
A5: The package/case types (M113 vs. M174) should be evaluated for dimensional and pinout equivalence within the application.