RN2104ACT(TPL3) Equivalent & Substitute Parts

Part Overview

The RN2104ACT(TPL3) is a pre-biased PNP bipolar junction transistor (BJT) manufactured by Toshiba Semiconductor and Storage. This surface mount device is rated for 50 V collector-emitter breakdown voltage with a maximum collector current of 80 mA and 100 mW power dissipation. The device features integrated base and emitter-base resistors (47 kOhms each) in a CST3 package (SC-101, SOT-883 form factor).

The RN2104ACT(TPL3) is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements. Active alternatives with compatible electrical and mechanical specifications are available from both Toshiba and Nexperia manufacturers.

Substiute Parts

RN2104ACT(TPL3)

Toshiba Semiconductor and StorageIn Stock: 1149RN2104ACT(TPL3) Datasheet

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RN2104MFV,L3F

Toshiba Semiconductor and StorageIn Stock: 1163RN2104MFV,L3F Datasheet

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PDTA144EM,315

Nexperia USA Inc.In Stock: 10094PDTA144EM,315 Datasheet

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PDTA144TM,315

Nexperia USA Inc.In Stock: 858PDTA144TM,315 Datasheet

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PDTA144TMB,315

NXP USA Inc.In Stock: 170337PDTA144TMB,315 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN2104ACT(TPL3) is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Transistor type must be PNP pre-biased configuration
• Voltage rating (Vce breakdown) must be 50 V or greater
• Maximum collector current must meet or exceed 80 mA
• Integrated base resistor (R1) must be 47 kOhms
• Integrated emitter-base resistor (R2) must be 47 kOhms
• DC current gain (hFE) minimum specification must be compatible with circuit design
• Vce saturation characteristics must support switching performance

Mechanical Compatibility Requirements:

• Surface mount mounting type
• Package form factor must be SC-101 or SOT-883 compatible
• Moisture sensitivity level MSL 1 or better

Supply Chain Considerations:

• Product status (active vs. obsolete) affects long-term availability
• RoHS and REACH compliance certifications ensure regulatory alignment

Substitute parts meeting these criteria are grouped into two categories: Toshiba alternatives and Nexperia alternatives. All listed substitutes maintain electrical parameter compatibility within the specified tolerances while offering improved availability and active product status.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: PDTA144EM,315 (Nexperia USA Inc.)

The PDTA144EM,315 is the direct functional equivalent of the RN2104ACT(TPL3). Both devices share identical package form factors (SC-101, SOT-883), matching base and emitter-base resistor values (47 kOhms), and equivalent voltage ratings (50 V). The PDTA144EM,315 offers 100 mA maximum collector current, exceeding the original 80 mA specification, and provides 250 mW power dissipation compared to the original 100 mW. This device is active in production with ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment and long-term supply availability. Current inventory exceeds 9,900 units.

Secondary Substitute: PDTA144TM,315 (Nexperia USA Inc.)

The PDTA144TM,315 provides equivalent electrical performance with identical package compatibility (SC-101, SOT-883). This device features a higher DC current gain specification (100 @ 1mA, 5V) compared to the original (80 @ 10mA, 5V), offering improved switching characteristics. The PDTA144TM,315 is active in production with ROHS3 compliance and REACH unaffected status. Current inventory is 773 units.

Tertiary Substitute: PDTA144TMB,315 (NXP USA Inc.)

The PDTA144TMB,315 is supplied in DFN1006B-3 package format with equivalent electrical specifications. This device supports 180 MHz transition frequency and is active in production. Current inventory exceeds 170,000 units, providing exceptional supply chain security. Package form factor differs from the original SC-101/SOT-883, requiring PCB layout verification.

Alternative Toshiba Source: RN2104MFV,L3F (Toshiba Semiconductor and Storage)

The RN2104MFV,L3F maintains Toshiba manufacturing continuity with active product status. This device is supplied in SOT-723 package format with 100 mA maximum collector current and 150 mW power dissipation. Package form factor differs from the original CST3 (SC-101, SOT-883), requiring PCB layout verification. RoHS compliance is confirmed. Current inventory is 1,054 units.

Selection Criteria:

For direct pin-compatible replacement without PCB modification, select PDTA144EM,315 or PDTA144TM,315. Both maintain SC-101/SOT-883 package compatibility with the original RN2104ACT(TPL3).

For applications where package form factor change is acceptable, PDTA144TMB,315 offers the highest inventory availability (170,278 units) and extended frequency performance (180 MHz).

For continued Toshiba sourcing, RN2104MFV,L3F provides active product status with RoHS compliance, though package form factor change (SOT-723) requires PCB layout verification.

All recommended substitutes meet or exceed the electrical specifications of the original RN2104ACT(TPL3) and maintain MSL 1 moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can PDTA144EM,315 be used as a direct replacement for RN2104ACT(TPL3) without PCB modification?

A: Yes. Both devices use SC-101/SOT-883 package form factors with identical pin configurations. Electrical specifications are compatible: 50 V voltage rating, 47 kOhms base and emitter-base resistors, and equivalent DC current gain characteristics. The PDTA144EM,315 provides higher current capacity (100 mA vs. 80 mA) and power dissipation (250 mW vs. 100 mW), making it suitable for direct substitution.

Q: What is the difference between PDTA144TM,315 and PDTA144EM,315?

A: Both devices share identical package form factors (SC-101, SOT-883) and voltage ratings (50 V). The primary difference is DC current gain specification: PDTA144TM,315 specifies 100 @ 1mA, 5V while PDTA144EM,315 specifies 80 @ 5mA, 5V. Both are active products with ROHS3 compliance. Selection depends on circuit requirements for switching speed and base drive current.

Q: Why does PDTA144TMB,315 have higher inventory availability?

A: PDTA144TMB,315 is supplied in DFN1006B-3 package format (different from the original SC-101/SOT-883), which is a more compact surface mount package used across multiple product lines. Higher production volumes for this package format result in greater inventory availability (170,278 units). However, PCB layout modification is required for implementation.

Q: Are all substitute parts RoHS compliant?

A: PDTA144EM,315 and PDTA144TM,315 are ROHS3 compliant. RN2104MFV,L3F is RoHS compliant. PDTA144TMB,315 RoHS status is not specified in the provided data. Verify RoHS compliance requirements with your specific application and regulatory framework.

Q: What is the impact of higher power dissipation ratings in substitute parts?

A: Substitute parts offer higher power dissipation ratings (150 mW to 250 mW) compared to the original RN2104ACT(TPL3) (100 mW). This provides thermal margin and allows operation in higher power applications. No negative impact occurs when substituting into designs rated for the original 100 mW specification; the higher rating simply provides additional design headroom.

Q: Can RN2104MFV,L3F be used without PCB modification?

A: RN2104MFV,L3F uses SOT-723 package format, which differs from the original CST3 (SC-101, SOT-883). PCB layout modification is required. Verify pin-to-pin compatibility and footprint dimensions before implementation. This device maintains Toshiba manufacturing continuity with active product status.

Q: What does "pre-biased" mean in the context of these transistors?

A: Pre-biased transistors integrate internal base and emitter-base resistors (47 kOhms each in this case) directly into the device package. These resistors provide automatic biasing without external components, simplifying circuit design and reducing component count. All listed substitutes maintain identical 47 kOhms resistor values, ensuring functional equivalence.

Q: Is moisture sensitivity level (MSL) a factor in substitute selection?

A: All listed substitutes maintain MSL 1 (Unlimited) rating, identical to the original RN2104ACT(TPL3). This indicates no moisture sensitivity concerns and no special storage or handling requirements. MSL 1 devices can be stored and handled under standard conditions without moisture bake-out procedures.

Q: What is the significance of "Vce Saturation" specifications in the parameter comparison?

A: Vce saturation indicates the minimum voltage drop across the collector-emitter junction when the transistor is fully saturated (conducting). Lower Vce saturation values indicate better switching efficiency and reduced power dissipation during conduction. The original RN2104ACT(TPL3) specifies 150mV @ 250µA, 5mA. PDTA144EM,315, PDTA144TM,315, and PDTA144TMB,315 all specify 150mV @ 500µA, 10mA, indicating equivalent or superior saturation performance at higher current levels.

Q: Can multiple substitute parts be used interchangeably in the same design?

A: PDTA144EM,315 and PDTA144TM,315 are fully interchangeable for applications using SC-101/SOT-883 packages. Both maintain identical package form factors, voltage ratings, and resistor values. Selection between these two depends on specific DC current gain requirements. PDTA144TMB,315 and RN2104MFV,L3F require PCB layout verification due to different package formats and should not be mixed with SC-101/SOT-883 devices in the same design without layout modification.