2N5401CTA Equivalent & Substitute Parts

Part Overview

The 2N5401CTA is a PNP bipolar junction transistor (BJT) manufactured by onsemi, designed for general-purpose switching and amplification applications. This device features a maximum collector current of 600 mA, collector-emitter breakdown voltage of 150 V, and a transition frequency of 400 MHz. The component is housed in a TO-92-3 through-hole package with formed leads.

The 2N5401CTA is classified as obsolete. Locating equivalent substitute parts is necessary to support ongoing production requirements, maintenance operations, and system redesigns where this component is specified in existing designs.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Current - Collector (Ic) (Max)	600	mA
Voltage - Collector Emitter Breakdown (Max)	150	V
Vce Saturation (Max) @ Ib, Ic	500 mV @ 5 mA, 50 mA	—
DC Current Gain (hFE) (Min) @ Ic, Vce	60 @ 10 mA, 5 V	—
Power - Max	625	mW
Frequency - Transition	400	MHz
Operating Temperature Range	-55 to 150	°C (TJ)
Mounting Type	Through Hole	—
Package / Case	TO-92-3 (TO-226AA)	—

Substitute Part Grouping Explanation

Substitution of the 2N5401CTA is determined by electrical and mechanical parameter equivalence. The following criteria establish valid substitution:

Electrical Parameters (Must Match):

Transistor polarity: PNP
Maximum collector current: 600 mA
Collector-emitter breakdown voltage: 150 V
Vce saturation characteristics: 500 mV @ 5 mA, 50 mA
DC current gain (hFE): minimum 60 @ 10 mA, 5 V
Maximum power dissipation: 625 mW
Transition frequency: 400 MHz
Operating temperature range: -55°C to 150°C

Mechanical Parameters (Must Match):

Mounting type: Through Hole
Package designation: TO-92-3 (TO-226AA) with formed leads

The 2N5401YTA meets all specified electrical and mechanical parameters and qualifies as a direct substitute for the 2N5401CTA.

Parameter Comparison

Parameter	2N5401CTA	2N5401YTA	Match
Transistor Type	PNP	PNP	✓
Current - Collector (Ic) (Max)	600 mA	600 mA	✓
Voltage - Collector Emitter Breakdown (Max)	150 V	150 V	✓
Vce Saturation (Max) @ Ib, Ic	500 mV @ 5 mA, 50 mA	500 mV @ 5 mA, 50 mA	✓
DC Current Gain (hFE) (Min) @ Ic, Vce	60 @ 10 mA, 5 V	60 @ 10 mA, 5 V	✓
Power - Max	625 mW	625 mW	✓
Frequency - Transition	400 MHz	400 MHz	✓
Operating Temperature Range	-55 to 150°C (TJ)	-55 to 150°C (TJ)	✓
Mounting Type	Through Hole	Through Hole	✓
Package / Case	TO-92-3 (TO-226AA)	TO-92-3 (TO-226AA)	✓
Base Product Number	2N5401	2N5401	✓
REACH Status	REACH Unaffected	REACH Unaffected	✓
ECCN	EAR99	EAR99	✓
HTSUS	8541.21.0075	8541.21.0075	✓

Engineering Selection Recommendations

The 2N5401YTA is a direct electrical and mechanical equivalent to the 2N5401CTA. Selection between these parts should be based on the following factors:

Product Status: The 2N5401CTA is classified as obsolete, while the 2N5401YTA is active. For new designs and ongoing production, the 2N5401YTA is the appropriate selection to ensure long-term component availability.

Compliance and Certifications: Both parts maintain REACH Unaffected status and EAR99 export classification. The 2N5401YTA carries RoHS3 compliance certification, providing additional regulatory alignment for applications subject to RoHS requirements.

Packaging Consideration: The 2N5401CTA is supplied in standard packaging, while the 2N5401YTA is available in Cut Tape (CT) format. This packaging difference does not affect electrical or mechanical compatibility and reflects standard distribution practices for active components.

Inventory Availability: The 2N5401YTA maintains significantly higher inventory levels (5200 pcs) compared to the 2N5401CTA (1084 pcs), supporting consistent supply chain operations.

Frequently Asked Questions (FAQ)

Q: Can the 2N5401YTA be used as a direct replacement for the 2N5401CTA in existing circuit designs?

A: Yes. The 2N5401YTA meets all electrical specifications (collector current, breakdown voltage, saturation characteristics, current gain, power dissipation, and transition frequency) and mechanical requirements (through-hole mounting, TO-92-3 package with formed leads) of the 2N5401CTA. No circuit modifications are required.

Q: What is the difference between the 2N5401CTA and 2N5401YTA part numbers?

A: Both parts share the base product number 2N5401 and are manufactured by onsemi. The suffix designations (CTA and YTA) indicate different manufacturing batches or packaging configurations. The 2N5401YTA is the active production variant, while the 2N5401CTA is obsolete.

Q: Does the Cut Tape (CT) packaging of the 2N5401YTA affect its performance or compatibility?

A: No. Cut Tape packaging is a distribution format that does not alter the electrical characteristics or physical dimensions of the component. The transistor itself remains identical in performance and pin configuration.

Q: Are there any compliance or regulatory differences between these parts?

A: Both parts maintain REACH Unaffected status and EAR99 export classification. The 2N5401YTA additionally carries RoHS3 compliance certification. Both parts are suitable for applications with equivalent regulatory requirements.

Q: What is the operating temperature range for both parts?

A: Both the 2N5401CTA and 2N5401YTA operate across the same temperature range of -55°C to 150°C (junction temperature). This specification applies to all electrical parameters and performance characteristics.

Q: Can these transistors be used in high-frequency switching applications?

A: Yes. Both parts feature a transition frequency of 400 MHz, supporting high-frequency switching and amplification applications within the specified electrical limits.

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