PDTC123TT,215 Equivalent & Substitute Parts

Part Overview

The PDTC123TT,215 is a pre-biased NPN bipolar junction transistor (BJT) manufactured by Nexperia USA Inc. in the TO-236AB surface mount package. This component is designed for general-purpose switching and amplification applications requiring a 50 V collector-emitter breakdown voltage with 100 mA maximum collector current and 250 mW power dissipation. The device features an integrated 2.2 kOhm base resistor for simplified circuit design. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are necessary when the primary part is unavailable, when alternative packaging formats are required, or when design optimization calls for different internal resistor configurations or electrical characteristics within the same functional class.

Substiute Parts

PDTC123TT,215

Nexperia USA Inc.In Stock: 6111PDTC123TT,215 Datasheet

Current PartRFQ

MMUN2238LT1G

onsemiIn Stock: 195871MMUN2238LT1G Datasheet

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DDTC123ECA-7-F

Diodes IncorporatedIn Stock: 9171DDTC123ECA-7-F Datasheet

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DDTC123JCA-7-F

Diodes IncorporatedIn Stock: 23309DDTC123JCA-7-F Datasheet

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DDTC123TCA-7-F

Diodes IncorporatedIn Stock: 50254DDTC123TCA-7-F Datasheet

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DDTC123YCA-7-F

Diodes IncorporatedIn Stock: 209134DDTC123YCA-7-F Datasheet

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DTC114TKAT146

Rohm SemiconductorIn Stock: 186672DTC114TKAT146 Datasheet

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DTC143TKAT146

Rohm SemiconductorIn Stock: 365224DTC143TKAT146 Datasheet

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DTD114GKT146

Rohm SemiconductorIn Stock: 6391DTD114GKT146 Datasheet

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SMMUN2238LT1G

onsemiIn Stock: 6326SMMUN2238LT1G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the PDTC123TT,215 is determined by the following critical parameters:

Primary Substitution Criteria:

• Transistor Type: NPN - Pre-Biased
• Maximum Collector Current (Ic): 100 mA
• Collector-Emitter Breakdown Voltage: 50 V
• Base Resistor (R1): 2.2 kOhms
• Package Type: TO-236-3 / SOT-23-3 / SC-59 (surface mount)
• Power Dissipation: 200 mW minimum

Secondary Compatibility Factors:

• Mounting Type: Surface Mount
• RoHS3 Compliance: Required
• MSL Rating: 1 (Unlimited)

Parts are grouped into two categories based on these parameters:

Direct Equivalents maintain identical or functionally equivalent base resistor values (2.2 kOhms) and electrical ratings within the specified limits.

Functional Substitutes provide the same core electrical performance (50 V, 100 mA, NPN pre-biased) but may feature different internal resistor configurations (alternative R2 emitter-base resistor values) or slightly different power ratings (200 mW vs. 246 mW), which remain within acceptable operating margins for the TO-236 package class.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Highest Compatibility):

MMUN2238LT1G and SMMUN2238LT1G (onsemi) are direct functional equivalents with identical base resistor values (2.2 kOhms), maximum collector current (100 mA), and breakdown voltage (50 V). Both maintain RoHS3 compliance and MSL 1 rating. Power dissipation is 246 mW, which is within the thermal envelope of the TO-236 package class. These parts are suitable for direct replacement in existing designs without circuit modification.

DDTC123JCA-7-F and DDTC123YCA-7-F (Diodes Incorporated) provide equivalent electrical performance with 2.2 kOhm base resistors and identical voltage/current ratings. Both are RoHS3 compliant with MSL 1 rating. Power rating of 200 mW is conservative relative to the 250 mW specification of the primary part. These parts are suitable for direct substitution.

Functional Substitutes (Circuit-Dependent Compatibility):

DDTC123ECA-7-F and DDTC123TCA-7-F (Diodes Incorporated) maintain the 2.2 kOhm base resistor configuration and are electrically compatible. Both feature 200 mW power rating and full compliance certifications. Selection depends on packaging preference (Cut Tape vs. Tape & Reel).

DTC143TKAT146 (Rohm Semiconductor) features a 4.7 kOhm base resistor instead of 2.2 kOhms, resulting in different bias characteristics. This part is suitable only when the higher base resistance is compatible with the application circuit. All other electrical parameters (50 V, 100 mA, RoHS3, MSL 1) are equivalent.

DTC114TKAT146 (Rohm Semiconductor) features a 10 kOhm base resistor, providing significantly different bias behavior. This part is suitable only for applications where higher base resistance is required or acceptable.

Not Recommended for Direct Substitution:

DTD114GKT146 (Rohm Semiconductor) features 500 mA maximum collector current, which exceeds the 100 mA specification of the primary part. While voltage and compliance ratings are compatible, the higher current rating indicates a different device class and is not a direct substitute.

Frequently Asked Questions (FAQ)

Q: Can MMUN2238LT1G replace PDTC123TT,215 without circuit modification?

A: Yes. MMUN2238LT1G is a direct functional equivalent with identical base resistor (2.2 kOhms), maximum collector current (100 mA), and breakdown voltage (50 V). The 246 mW power rating is within the thermal limits of the TO-236 package. No circuit changes are required.

Q: What is the difference between DDTC123JCA-7-F and DDTC123YCA-7-F?

A: Both parts are manufactured by Diodes Incorporated with identical electrical specifications (2.2 kOhm base resistor, 100 mA, 50 V). The primary difference is packaging format: DDTC123JCA-7-F is supplied in Tape & Reel, while DDTC123YCA-7-F is also supplied in Tape & Reel. Both are suitable for direct substitution.

Q: Why does DTC143TKAT146 have a different base resistor value?

A: DTC143TKAT146 features a 4.7 kOhm base resistor compared to the 2.2 kOhm in PDTC123TT,215. This results in different bias current and switching characteristics. This part is suitable only when the application circuit is designed to accommodate higher base resistance or when bias point adjustment is required.

Q: Is DTD114GKT146 a suitable substitute?

A: DTD114GKT146 is not a direct substitute. While it maintains the 50 V breakdown voltage and RoHS3 compliance, its 500 mA maximum collector current exceeds the 100 mA specification of PDTC123TT,215. This indicates a different device class intended for higher-current applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental and regulatory specifications of PDTC123TT,215.

Q: What is the difference between TO-236AB and SOT-23-3 packaging?

A: TO-236AB and SOT-23-3 are equivalent package designations for the same physical form factor. Both refer to a three-lead surface mount package with identical pin spacing and footprint. Parts specified as SOT-23-3 (TO-236) are mechanically and electrically interchangeable with TO-236AB devices.

Q: Can I use SMMUN2238LT1G in place of MMUN2238LT1G?

A: Yes. Both parts are manufactured by onsemi with identical electrical specifications (2.2 kOhm base resistor, 100 mA, 50 V, 246 mW). Both are supplied in Tape & Reel packaging and are fully interchangeable.

Q: What packaging formats are available for substitute parts?

A: Substitute parts are available in three packaging formats: Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®, and SMT3. Selection depends on manufacturing and assembly requirements. All formats are compatible with standard surface mount assembly processes.