2N5401RL1G Equivalent & Substitute Parts

Part Overview

The 2N5401RL1G is a Bipolar (BJT) Transistor with PNP polarity manufactured by onsemi. This component operates at 150 V collector-emitter breakdown voltage with a maximum collector current of 600 mA and 625 mW power dissipation in a Through Hole TO-92 package. The device is classified as Obsolete, making identification of equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

2N5401RL1G

onsemiIn Stock: 11242N5401RL1G Datasheet

Current PartRFQ

2N5401YTA

onsemiIn Stock: 53072N5401YTA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2N5401RL1G is determined by electrical and mechanical parameter compatibility within the PNP BJT category. The following parameters establish substitution eligibility:

Critical Electrical Parameters:

• Transistor Type: PNP (must match)
• Current - Collector (Ic) (Max): 600 mA (must match or exceed)
• Voltage - Collector Emitter Breakdown (Max): 150 V (must match or exceed)
• DC Current Gain (hFE) (Min): 60 @ 10mA, 5V (must match or exceed)
• Power - Max: 625 mW (must match or exceed)

Critical Mechanical Parameters:

• Mounting Type: Through Hole (must match)
• Package / Case: TO-92-3 (must match)

Acceptable Variations:

• Frequency - Transition: May exceed specified value
• Operating Temperature Range: May equal or exceed specified range
• Product Status: Active status preferred over Obsolete
• Compliance Certifications: Enhanced compliance acceptable

The 2N5401YTA meets all critical electrical and mechanical parameters and is classified as Active, providing superior procurement availability compared to the Obsolete 2N5401RL1G.

Parameter Comparison

Engineering Selection Recommendations

The 2N5401YTA is a direct substitute for the 2N5401RL1G based on matched electrical and mechanical specifications. Selection of the 2N5401YTA is supported by the following factors:

Product Status: The 2N5401YTA is classified as Active, ensuring long-term availability and supply chain continuity. The 2N5401RL1G is Obsolete, presenting procurement risk.

Electrical Compatibility: All critical electrical parameters are identical, including collector current, breakdown voltage, saturation voltage, current gain, and power dissipation. The transition frequency of the 2N5401YTA (400MHz) exceeds the 2N5401RL1G (300MHz), providing enhanced performance margin without circuit modification.

Mechanical Compatibility: Both devices utilize identical Through Hole mounting and TO-92-3 package configurations, enabling direct board-level substitution without layout changes.

Compliance: The 2N5401YTA carries ROHS3 compliance certification and REACH Unaffected status, meeting current regulatory requirements. Both devices share identical ECCN and HTSUS classifications.

Packaging: The 2N5401YTA is supplied in Cut Tape (CT) format, standard for active production components, compared to the legacy packaging of the obsolete 2N5401RL1G.

Frequently Asked Questions (FAQ)

Q: Can the 2N5401YTA replace the 2N5401RL1G in existing designs?

A: Yes. The 2N5401YTA is electrically and mechanically equivalent to the 2N5401RL1G. All critical parameters including collector current (600 mA), breakdown voltage (150 V), saturation voltage (500mV @ 5mA, 50mA), current gain (60 @ 10mA, 5V), and power rating (625 mW) are identical. The TO-92-3 package configuration is unchanged, permitting direct substitution without circuit redesign or board modification.

Q: What is the difference in transition frequency between these parts?

A: The 2N5401YTA operates at 400MHz transition frequency compared to 300MHz for the 2N5401RL1G. This represents a 33% increase in frequency capability. For applications operating below 300MHz, this difference is not limiting. For applications approaching or exceeding 300MHz, the 2N5401YTA provides additional performance margin.

Q: Why is the 2N5401RL1G classified as Obsolete?

A: The 2N5401RL1G is an older production variant. The 2N5401YTA represents the current Active production part from onsemi for this device family. Obsolete classification indicates that the 2N5401RL1G is no longer manufactured and existing inventory is limited.

Q: Are there packaging differences between these parts?

A: Both parts use the TO-92-3 (TO-226) Through Hole package with formed leads. The 2N5401RL1G is supplied in Long Body configuration, while the 2N5401YTA is supplied in standard TO-92-3 (TO-226AA) Formed Leads configuration. Both are physically compatible with standard TO-92 footprints.

Q: What compliance certifications apply to the 2N5401YTA?

A: The 2N5401YTA is ROHS3 Compliant and REACH Unaffected. Both devices share identical ECCN (EAR99) and HTSUS (8541.21.0075) classifications. The 2N5401YTA meets current environmental and regulatory requirements for component procurement.

Q: Is the 2N5401YTA suitable for high-temperature applications?

A: Yes. The 2N5401YTA operates across the full temperature range of -55°C to 150°C (TJ), identical to the 2N5401RL1G. This range supports industrial and automotive applications requiring extended temperature performance.

Q: Can I use the 2N5401YTA in applications originally designed for the 2N5401RL1G?

A: Yes. The 2N5401YTA is a direct functional equivalent. All electrical specifications are matched or exceeded. No circuit modifications, bias adjustments, or design changes are required. The device is pin-compatible and package-compatible with the original design.