2PC4081Q-QX Equivalent & Substitute Parts

Part Overview

The 2PC4081Q-QX is an NPN bipolar junction transistor (BJT) manufactured by Nexperia USA Inc. in the SOT-323 surface mount package. This component is designed for general-purpose switching and amplification applications requiring moderate current handling and frequency response. The part maintains Active product status and carries automotive-grade qualification under AEC-Q101 standards. Substitute parts are identified when inventory constraints, supply chain disruptions, or design flexibility requirements necessitate alternative component selection while maintaining electrical and mechanical compatibility.

Substiute Parts

2PC4081Q-QX

Nexperia USA Inc.In Stock: 11022PC4081Q-QX Datasheet

Current PartRFQ

2PC4081Q,115

Nexperia USA Inc.In Stock: 38792PC4081Q,115 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 2PC4081Q-QX is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Transistor polarity: NPN
• Maximum collector current: 150 mA
• Collector-emitter breakdown voltage: 50 V
• Vce saturation: 400 mV @ 5mA, 50mA
• Collector cutoff current: 100 nA (ICBO)
• DC current gain (hFE): minimum 120 @ 1mA, 6V
• Maximum power dissipation: 200 mW
• Transition frequency: 100 MHz
• Maximum operating temperature: 150°C

Mechanical Parameters (Must Match):

• Package type: SOT-323 / SC-70
• Mounting type: Surface Mount

Compliance Parameters (Must Match):

• Automotive grade qualification
• AEC-Q101 certification
• RoHS3 compliance

The substitute part 2PC4081Q,115 meets all electrical, mechanical, and compliance requirements and is therefore a direct parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: 2PC4081Q-QX

The 2PC4081Q-QX is the specified component and maintains full Active product status with established supply availability (1058 pcs in stock). This part carries complete automotive-grade qualification under AEC-Q101 standards and meets all RoHS3 and REACH compliance requirements. Selection of this part number is appropriate for new designs and production applications requiring documented traceability to the original specification.

Substitute Selection: 2PC4081Q,115

The 2PC4081Q,115 is a direct parametric equivalent offering identical electrical performance, mechanical compatibility, and compliance certifications. This part maintains Active product status with higher inventory availability (3790 pcs in stock). The substitute is suitable for applications where the original part number is unavailable or where design flexibility permits equivalent component substitution. Both parts are manufactured by the same supplier (Nexperia USA Inc.) and share identical performance characteristics across all critical parameters.

Compliance Assurance

Both the primary and substitute parts satisfy automotive-grade requirements and carry AEC-Q101 qualification. Both are RoHS3 compliant and REACH unaffected, ensuring regulatory compliance for automotive and industrial applications. No additional qualification or testing is required when substituting between these parts within the same application context.

Frequently Asked Questions (FAQ)

Q: Can 2PC4081Q,115 be used as a direct replacement for 2PC4081Q-QX?

A: Yes. The 2PC4081Q,115 is a direct parametric equivalent. All electrical specifications, mechanical dimensions, and compliance certifications are identical. Both parts are NPN transistors in SOT-323 packages with 150 mA maximum collector current, 50 V breakdown voltage, 200 mW power dissipation, and 100 MHz transition frequency. Both carry AEC-Q101 automotive qualification and RoHS3 compliance.

Q: Are there any differences in package dimensions between these parts?

A: No. Both parts use the SOT-323 / SC-70 surface mount package with identical mechanical specifications. PCB footprints and assembly processes are interchangeable.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the 2PC4081Q-QX and 2PC4081Q,115 are automotive-grade components with AEC-Q101 qualification. Both are suitable for automotive applications requiring this certification level.

Q: What is the difference between the part numbers 2PC4081Q-QX and 2PC4081Q,115?

A: The part numbers reflect different packaging or distribution designations from Nexperia USA Inc., but the electrical and mechanical specifications are identical. The difference is administrative rather than technical.

Q: Are there any moisture sensitivity or storage differences between these parts?

A: The 2PC4081Q,115 specifies Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard surface mount component handling procedures apply to both parts.

Q: Can these parts be used interchangeably in existing production?

A: Yes, within the same application context. Both parts meet identical electrical specifications and compliance requirements. Design documentation should be updated to reflect any part number changes in production.

Q: What is the maximum operating temperature for these transistors?

A: Both parts are rated for maximum junction temperature (TJ) of 150°C. This specification applies to both the 2PC4081Q-QX and 2PC4081Q,115.

Q: Are these parts suitable for high-frequency applications?

A: Both parts have a transition frequency of 100 MHz, making them suitable for general-purpose switching and amplification applications in this frequency range. Application-specific frequency requirements should be evaluated against this specification.