2N5401RLRAG Equivalent & Substitute Parts

Part Overview

The 2N5401RLRAG is a PNP bipolar junction transistor manufactured by onsemi, rated for 150 V collector-emitter breakdown voltage and 600 mA maximum collector current. This device is packaged in a through-hole TO-92 configuration and is designated as obsolete. Due to its obsolete product status, equivalent and substitute parts are necessary for ongoing design support, production continuity, and component sourcing in applications requiring PNP transistor functionality within the specified electrical and mechanical parameters.

Substiute Parts

2N5401RLRAG

onsemiIn Stock: 42752N5401RLRAG Datasheet

Current PartRFQ

2N5401YTA

onsemiIn Stock: 53072N5401YTA Datasheet

DirectRFQ

MMBT5401LT1G

onsemiIn Stock: 305308MMBT5401LT1G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 2N5401RLRAG are identified based on electrical parameter compatibility and mechanical form factor considerations. The substitution logic is structured into two categories:

Direct Substitutes (Electrical and Mechanical Equivalence): Parts that maintain identical or superior electrical ratings while preserving the through-hole TO-92 package form factor. These parts satisfy the core requirements of 150 V breakdown voltage, 600 mA collector current capability, and PNP transistor type.

Functional Equivalents (Electrical Equivalence with Package Variation): Parts that provide equivalent electrical performance but employ alternative packaging technologies, such as surface-mount SOT-23-3 configurations. These parts are suitable for applications where package form factor can be adapted.

The following parameters determine substitution eligibility:

• Transistor Type: PNP
• Voltage - Collector Emitter Breakdown (Max): ≥ 150 V
• Current - Collector (Ic) (Max): ≥ 600 mA (for direct substitutes) or ≥ 500 mA (for functional equivalents)
• DC Current Gain (hFE) (Min): ≥ 60 @ 10mA, 5V
• Vce Saturation (Max): ≤ 500mV @ 5mA, 50mA
• Operating Temperature Range: -55°C to 150°C minimum

Parameter Comparison

Engineering Selection Recommendations

2N5401YTA (Direct Substitute): This part is the primary equivalent for the 2N5401RLRAG. It maintains identical electrical specifications including 150 V breakdown voltage, 600 mA collector current, and TO-92-3 through-hole packaging. The 2N5401YTA is classified as Active product status, ensuring ongoing availability and supply chain support. It carries ROHS3 compliance certification, meeting modern environmental and regulatory requirements. The transition frequency of 400 MHz exceeds the original specification, providing enhanced performance margin. This part is suitable for direct replacement in existing through-hole PCB designs without layout modification.

MMBT5401LT1G (Functional Equivalent): This part provides electrical equivalence with a critical distinction in packaging technology. The MMBT5401LT1G employs surface-mount SOT-23-3 packaging rather than through-hole TO-92-3 configuration. Electrical parameters remain compatible: 150 V breakdown voltage, 500 mA collector current (100 mA reduction from original), and identical DC current gain specifications. Power dissipation is reduced to 300 mW due to lower current rating. This part is classified as Active with ROHS3 compliance. Selection of MMBT5401LT1G requires PCB redesign to accommodate surface-mount footprint and is appropriate for new designs or board revisions where surface-mount technology is preferred.

Frequently Asked Questions (FAQ)

Q: Can the 2N5401YTA directly replace the 2N5401RLRAG without circuit modification?

A: Yes. The 2N5401YTA maintains identical electrical specifications and TO-92-3 through-hole packaging. No circuit modification is required. Pin configuration and electrical performance are equivalent.

Q: What is the primary difference between the 2N5401YTA and MMBT5401LT1G?

A: The primary difference is packaging technology. The 2N5401YTA uses through-hole TO-92-3 configuration, while the MMBT5401LT1G uses surface-mount SOT-23-3 configuration. Additionally, the MMBT5401LT1G has a maximum collector current of 500 mA compared to 600 mA for the 2N5401YTA, and reduced power dissipation of 300 mW versus 625 mW.

Q: Is the MMBT5401LT1G suitable for applications requiring 600 mA collector current?

A: No. The MMBT5401LT1G is rated for a maximum collector current of 500 mA. Applications requiring 600 mA collector current must use the 2N5401YTA or equivalent 600 mA rated devices.

Q: What compliance certifications apply to the substitute parts?

A: Both 2N5401YTA and MMBT5401LT1G are ROHS3 compliant and REACH unaffected. Both carry EAR99 ECCN classification and identical HTSUS codes.

Q: Can the MMBT5401LT1G be used in existing through-hole PCB designs?

A: No. The MMBT5401LT1G requires surface-mount PCB footprint (SOT-23-3). Existing through-hole designs must use the 2N5401YTA or equivalent TO-92-3 packaged devices.

Q: Are there any frequency performance differences between the substitutes?

A: Yes. The 2N5401YTA has a transition frequency of 400 MHz, exceeding the original 2N5401RLRAG specification of 300 MHz. The MMBT5401LT1G maintains 300 MHz transition frequency. Both are suitable for applications within the original frequency specification.

Q: What is the moisture sensitivity level for these substitute parts?

A: The 2N5401YTA has MSL not applicable (surface-mount packaging consideration). The MMBT5401LT1G has MSL 1 (Unlimited), indicating no moisture sensitivity restrictions.