PDTC115TMB,315 Equivalent & Substitute Parts

Part Overview

The PDTC115TMB,315 is a pre-biased NPN bipolar junction transistor manufactured by Nexperia USA Inc. in a 3-pin DFN1006B-3 surface mount package. This component is designed for applications requiring integrated base biasing resistors, eliminating the need for external bias networks. The part is currently in active production status with automotive-grade qualification (AEC-Q100) and full RoHS3 compliance.

Substitute parts become necessary when the primary component experiences supply discontinuation, extended lead times, or inventory constraints. The PDTC115TMB,315 has been identified with one qualified equivalent that maintains electrical and mechanical compatibility within specified operating parameters.

Substiute Parts

PDTC115TMB,315

Nexperia USA Inc.In Stock: 718PDTC115TMB,315 Datasheet

Current PartRFQ

NSBC115TF3T5G

onsemiIn Stock: 959NSBC115TF3T5G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PDTC115TMB,315 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Transistor type classification: NPN - Pre-Biased
• Maximum collector current: 100 mA
• Collector-emitter breakdown voltage: 50 V
• Base resistor value: 100 kOhms
• Surface mount mounting type
• RoHS3 compliance status
• Moisture sensitivity level: 1 (Unlimited)

The NSBC115TF3T5G manufactured by onsemi meets all critical electrical specifications. While the package format differs (SOT-1123 versus DFN1006B-3), both are three-pin surface mount packages with identical pin functionality and electrical performance within the specified operating range. The substitute part maintains the same base biasing resistor configuration and maximum current/voltage ratings required for direct functional replacement.

Parameter Comparison

Engineering Selection Recommendations

PDTC115TMB,315 (Primary Selection)

The PDTC115TMB,315 remains the preferred component for new designs and ongoing production. This part maintains active production status with full automotive-grade qualification (AEC-Q100) and unlimited moisture sensitivity rating. The DFN1006B-3 package provides compact footprint optimization for space-constrained applications. Current inventory availability (684 pieces) supports immediate procurement requirements.

NSBC115TF3T5G (Substitute Selection)

The NSBC115TF3T5G qualifies as a functional equivalent when PDTC115TMB,315 availability is constrained. This onsemi part carries Last Time Buy status, indicating limited future availability. Selection of this substitute requires confirmation that the SOT-1123 package footprint accommodates existing PCB layout constraints. Both parts maintain identical electrical performance within specified operating parameters and carry equivalent RoHS3 compliance and moisture sensitivity ratings. The higher inventory availability (887 pieces) may provide short-term supply advantages.

Frequently Asked Questions (FAQ)

Q: Can NSBC115TF3T5G directly replace PDTC115TMB,315 on existing PCBs?

A: Electrical substitution is valid. However, package format differs (SOT-1123 versus DFN1006B-3). PCB layout compatibility requires verification of footprint dimensions and pin spacing. Both packages are three-pin surface mount configurations with identical electrical pin functions.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is based on matching transistor type (NPN - Pre-Biased), maximum collector current (100 mA), collector-emitter breakdown voltage (50 V), base resistor value (100 kOhms), and surface mount mounting type. Both parts meet these criteria.

Q: Are there compliance differences between the two parts?

A: Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. The primary difference is product status: PDTC115TMB,315 is Active, while NSBC115TF3G is Last Time Buy. This affects long-term availability planning.

Q: How do the DC current gain specifications compare?

A: The PDTC115TMB,315 specifies minimum hFE of 100 at 1mA/5V, while NSBC115TF3T5G specifies minimum hFE of 160 at 5mA/10V. Both values are measured at different operating points. Application-specific verification is required if DC current gain is a critical design parameter.

Q: What is the significance of the Last Time Buy status for NSBC115TF3T5G?

A: Last Time Buy status indicates that onsemi has announced end-of-life for this component. Future availability will be limited to existing inventory. This part should be considered only for immediate substitution needs, not for long-term production planning.

Q: Are there differences in maximum power dissipation?

A: The PDTC115TMB,315 is rated at 250 mW maximum, while NSBC115TF3T5G is rated at 254 mW maximum. Both ratings support equivalent thermal performance within typical application operating ranges.