PDTC144TMB,315 Equivalent & Substitute Parts

Part Overview

The PDTC144TMB,315 is a pre-biased NPN bipolar junction transistor manufactured by Nexperia USA Inc. in a 3-pin DFN surface mount package. This component is designed for general-purpose switching and amplification applications requiring integrated base bias resistors. The part is active in production status and carries automotive-grade qualification under AEC-Q100 standards. Substitute parts are identified when original inventory is unavailable, when packaging format changes are required, or when alternative supplier sourcing is necessary while maintaining functional equivalence within specified electrical parameters.

Substiute Parts

PDTC144TMB,315

Nexperia USA Inc.In Stock: 978PDTC144TMB,315 Datasheet

Current PartRFQ

RN1113ACT(TPL3)

Toshiba Semiconductor and StorageIn Stock: 11024RN1113ACT(TPL3) Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PDTC144TMB,315 is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Transistor type must be NPN with integrated base bias resistor (pre-biased configuration)
• Collector-emitter breakdown voltage must be 50 V or greater
• Base resistor value must be 47 kOhms
• Maximum collector current must support the application requirement (100 mA for primary part)
• DC current gain characteristics must be compatible with circuit design
• Saturation voltage performance must be within acceptable limits

Mechanical Compatibility Criteria:

• Surface mount mounting type required
• Package footprint compatibility or documented pin-compatible alternatives
• Moisture sensitivity level must be MSL 1 or equivalent

Compliance Criteria:

• RoHS compliance status must be maintained
• REACH compliance status must be maintained
• ECCN classification must be EAR99

The substitute part RN1113ACT(TPL3) meets these criteria with the following considerations: identical voltage rating, identical base resistor value, compatible DC current gain, and equivalent saturation voltage performance. The maximum collector current is reduced to 80 mA and power dissipation to 100 mW, which represents a functional limitation that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (PDTC144TMB,315): The PDTC144TMB,315 is the preferred selection for applications requiring the full specified performance envelope. This part carries automotive-grade qualification under AEC-Q100, ROHS3 compliance, and is actively produced by Nexperia USA Inc. The 100 mA collector current rating and 250 mW power dissipation capability provide maximum design margin for switching and amplification circuits. The 230 MHz transition frequency supports high-speed switching applications.

Substitute Selection (RN1113ACT(TPL3)): The RN1113ACT(TPL3) manufactured by Toshiba Semiconductor and Storage is electrically compatible for applications where the maximum collector current requirement does not exceed 80 mA and power dissipation does not exceed 100 mW. This substitute maintains identical voltage rating, base resistor value, and saturation voltage performance. The higher DC current gain (120 vs. 100) provides improved base drive efficiency. Both parts carry RoHS compliance and MSL 1 moisture sensitivity rating. Package format differs (CST3 vs. DFN1006B-3), requiring PCB layout modification.

Compliance Verification: Both parts maintain EAR99 ECCN classification and are REACH unaffected. Selection between these parts does not introduce regulatory compliance risk when used within their respective electrical ratings.

Frequently Asked Questions (FAQ)

Q: Can the RN1113ACT(TPL3) be used as a direct replacement for the PDTC144TMB,315 in all applications?

A: The RN1113ACT(TPL3) is electrically compatible only for applications where collector current does not exceed 80 mA and power dissipation does not exceed 100 mW. Applications requiring the full 100 mA or 250 mW capability must use the PDTC144TMB,315. PCB layout modification is required due to different package formats.

Q: What are the key electrical parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: transistor type (NPN pre-biased), collector-emitter breakdown voltage (50 V minimum), base resistor value (47 kOhms), and saturation voltage performance (150 mV maximum). Current and power ratings must be evaluated against specific application requirements.

Q: Are there package compatibility considerations between these parts?

A: Yes. The PDTC144TMB,315 uses a 3-XFDFN package (DFN1006B-3), while the RN1113ACT(TPL3) uses a CST3 package (SC-101, SOT-883). These packages have different footprints and pin configurations. PCB redesign is required for substitution.

Q: Do both parts meet automotive qualification requirements?

A: The PDTC144TMB,315 carries AEC-Q100 automotive qualification. The RN1113ACT(TPL3) does not list AEC-Q100 qualification in the provided specifications. For automotive applications requiring AEC-Q100 compliance, the PDTC144TMB,315 is the required selection.

Q: What is the difference in DC current gain between these parts?

A: The PDTC144TMB,315 specifies a minimum DC current gain of 100 at 1 mA and 5 V. The RN1113ACT(TPL3) specifies a minimum of 120 at the same conditions. The higher gain in the substitute part improves base drive efficiency but does not affect substitution compatibility for applications designed around the primary part's gain specification.

Q: Are moisture sensitivity levels equivalent between these parts?

A: Yes. Both the PDTC144TMB,315 and RN1113ACT(TPL3) carry MSL 1 (Unlimited) moisture sensitivity rating, indicating no moisture sensitivity restrictions for storage and handling.

Q: What is the significance of the different saturation voltage test conditions?

A: The PDTC144TMB,315 specifies saturation voltage at 500 µA base current and 10 mA collector current. The RN1113ACT(TPL3) specifies saturation voltage at 250 µA base current and 5 mA collector current. Both maintain 150 mV maximum saturation voltage, but at different operating points. Applications must verify saturation performance at their specific operating conditions.