2N5484 Equivalent & Substitute Parts

Part Overview

The 2N5484 is an RF MOSFET JFET N-Channel transistor manufactured by onsemi, rated for 15V operation at 400MHz frequency. This device is packaged in a TO-92-3 (TO-226AA) through-hole configuration and is currently classified as obsolete. The 2N5484 has been superseded in active production, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute parts maintain electrical and mechanical compatibility while offering improved availability and product status.

Substiute Parts

2N5484

onsemiIn Stock: 108212N5484 Datasheet

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MMBF5484

onsemiIn Stock: 19348MMBF5484 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2N5484 is determined by strict electrical and mechanical parameter matching. The following criteria establish valid substitute relationships:

Electrical Parameters (Must Match):

• Technology: JFET
• Configuration: N-Channel
• Frequency: 400 MHz
• Voltage - Test: 15 V
• Voltage - Rated: 25 V
• Current Rating: 5 mA
• Noise Figure: 4 dB

Mechanical Parameters (Allowed Variation):

• Mounting Type: Through Hole or Surface Mount
• Package / Case: TO-92-3 (original) or SOT-23-3 (surface mount equivalent)

The MMBF5484 qualifies as a direct electrical substitute to the 2N5484. Both devices share identical electrical specifications across all critical parameters. The primary difference is the package configuration: the MMBF5484 uses a surface-mount SOT-23-3 package instead of the through-hole TO-92-3 package of the original 2N5484. This substitution is valid when PCB layout and assembly capabilities support surface-mount technology.

Parameter Comparison

Engineering Selection Recommendations

For Through-Hole PCB Designs: The 2N5484 remains the specified component when through-hole mounting is required. However, due to obsolete product status, long-term availability is limited. Designs should be evaluated for migration to surface-mount alternatives where feasible.

For Surface-Mount PCB Designs: The MMBF5484 is the direct electrical equivalent and is recommended for new designs. This device is manufactured by onsemi with active product status, ensuring ongoing availability and supply chain stability. The MMBF5484 maintains all electrical specifications of the 2N5484 while offering the advantages of surface-mount technology and current production status.

Compliance Considerations: Both the 2N5484 and MMBF5484 are REACH Unaffected and classified under ECCN EAR99. The MMBF5484 carries RoHS3 Compliance certification, providing additional regulatory alignment for applications subject to RoHS requirements.

Frequently Asked Questions (FAQ)

Q: Can the MMBF5484 replace the 2N5484 in existing through-hole designs?

A: Electrical substitution is valid; however, physical package differences require PCB redesign. The MMBF5484 uses SOT-23-3 surface-mount packaging, while the 2N5484 uses TO-92-3 through-hole packaging. Direct socket replacement is not possible without PCB layout modification.

Q: What are the key electrical parameters that define substitution compatibility?

A: Substitution compatibility is determined by matching technology (JFET), configuration (N-Channel), frequency (400 MHz), test voltage (15 V), rated voltage (25 V), current rating (5 mA), and noise figure (4 dB). All these parameters must be identical between the original and substitute part.

Q: Why is the MMBF5484 recommended over the 2N5484?

A: The MMBF5484 is recommended because it maintains identical electrical specifications while offering active product status and improved supply chain availability. The 2N5484 is classified as obsolete, which creates long-term sourcing challenges.

Q: Are there any compliance differences between these parts?

A: Both parts are REACH Unaffected and classified as EAR99. The MMBF5484 carries additional RoHS3 Compliance certification, which may be required for certain applications or markets.

Q: What is the moisture sensitivity level for both parts?

A: Both the 2N5484 and MMBF5484 have a Moisture Sensitivity Level (MSL) of 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.

Q: Can the MMBF5484 be used in RF applications at 400 MHz?

A: Yes. The MMBF5484 is rated for 400 MHz operation and maintains the same noise figure (4 dB) as the 2N5484, making it suitable for RF applications within the specified frequency range.