SS9014CBU NPN Bipolar Junction Transistor Equivalent & Substitute Parts

Part Overview

The SS9014CBU is an NPN bipolar junction transistor manufactured by onsemi, rated for 45 V collector-emitter breakdown voltage and 100 mA maximum collector current. This device is packaged in a TO-92-3 through-hole configuration and is classified as obsolete product status. Due to its obsolete classification, identifying equivalent and substitute parts is necessary for ongoing design support, production continuity, and component sourcing in applications where the SS9014CBU is currently deployed.

Substiute Parts

SS9014CBU

onsemiIn Stock: 2034SS9014CBU Datasheet

Current PartRFQ

2N5232A PBFREE

Central Semiconductor CorpIn Stock: 178042N5232A PBFREE Datasheet

SimilarRFQ

SS9014CBU

Fairchild SemiconductorIn Stock: 2012SS9014CBU Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SS9014CBU is determined by the following critical parameters:

Mandatory Matching Criteria:

• Transistor Type: NPN
• Package / Case: TO-92-3 (TO-226-3)
• Mounting Type: Through Hole
• Current - Collector (Ic) Max: 100 mA (minimum requirement)
• Voltage - Collector Emitter Breakdown (Max): ≥45 V

Acceptable Variation Criteria:

• Power - Max: Equal to or greater than 450 mW
• Frequency - Transition: Equal to or greater than 270 MHz (where specified)
• Operating Temperature: Equal to or greater than 150°C maximum
• DC Current Gain (hFE): Equal to or greater than specified minimum values
• Vce Saturation: Equal to or lower than specified maximum values

Substitute parts must maintain electrical performance within the design envelope of the original SS9014CBU while meeting or exceeding its rated specifications. Parts that exceed these parameters remain compatible for direct substitution in existing applications.

Parameter Comparison

Engineering Selection Recommendations

SS9014CBU (Fairchild Semiconductor): This parametric equivalent maintains identical electrical specifications to the onsemi SS9014CBU, including 45 V breakdown voltage, 270 MHz transition frequency, and 450 mW power rating. The Fairchild variant carries active product status, ensuring continued availability and supply chain stability. Both devices are ROHS3 compliant and share identical package geometry. This part is the primary equivalent for direct substitution in applications currently using the onsemi SS9014CBU.

2N5232A PBFREE (Central Semiconductor): This substitute part exceeds the electrical performance envelope of the SS9014CBU across multiple parameters: 50 V breakdown voltage (versus 45 V), 625 mW power rating (versus 450 mW), and superior DC current gain of 250 minimum (versus 200 minimum). The 2N5232A demonstrates lower Vce saturation voltage and reduced collector cutoff current, indicating improved switching characteristics. This part maintains active product status and ROHS3 compliance. The 2N5232A is suitable for applications where enhanced performance margins and extended component availability are required. Transition frequency is not specified for this part.

Both substitute parts are housed in TO-92-3 through-hole packages and maintain compatibility with existing PCB layouts and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the 2N5232A PBFREE directly replace the SS9014CBU in all applications?

A: The 2N5232A PBFREE meets or exceeds all critical electrical parameters of the SS9014CBU, including collector current, breakdown voltage, and power dissipation. The package geometry is identical (TO-92-3). However, the 2N5232A does not specify transition frequency, whereas the SS9014CBU is rated at 270 MHz. Applications requiring confirmed high-frequency performance should verify the 2N5232A specification with the manufacturer or select the Fairchild SS9014CBU equivalent.

Q: What is the difference between the onsemi SS9014CBU and the Fairchild SS9014CBU?

A: Both parts share identical part numbers and electrical specifications: 45 V breakdown voltage, 100 mA collector current, 270 MHz transition frequency, and 450 mW power rating. The primary difference is manufacturer and product status. The Fairchild variant carries active product status, whereas the onsemi version is classified as obsolete. For new designs or ongoing production, the Fairchild SS9014CBU provides assured supply continuity.

Q: Are all three parts pin-compatible?

A: Yes. All three parts (onsemi SS9014CBU, Fairchild SS9014CBU, and 2N5232A PBFREE) are packaged in TO-92-3 through-hole configuration with identical pin assignments for NPN transistors: Base, Collector, and Emitter. Direct PCB substitution is mechanically feasible without layout modification.

Q: Which substitute part should be selected for maximum design margin?

A: The 2N5232A PBFREE provides the highest performance margin with 50 V breakdown voltage (5 V above the SS9014CBU requirement), 625 mW power rating (175 mW above the SS9014CBU requirement), and superior current gain characteristics. This part is appropriate for applications where enhanced reliability and performance headroom are design objectives.

Q: Are all parts RoHS compliant?

A: Yes. The onsemi SS9014CBU, Fairchild SS9014CBU, and 2N5232A PBFREE are all ROHS3 compliant. All parts carry REACH Unaffected status and are suitable for applications subject to environmental and regulatory compliance requirements.

Q: What is the significance of the "PBFREE" designation on the 2N5232A?

A: The PBFREE designation indicates that the 2N5232A is manufactured without lead (Pb) in the solder or plating materials, consistent with RoHS3 compliance requirements. This designation confirms the part meets lead-free manufacturing standards.