RN1112ACT(TPL3) Equivalent & Substitute Parts

Part Overview

The RN1112ACT(TPL3) is a pre-biased NPN bipolar junction transistor (BJT) manufactured by Toshiba Semiconductor and Storage. This surface mount device operates at 50 V collector-emitter breakdown voltage with a maximum collector current of 80 mA and 100 mW power dissipation. The integrated base resistor of 22 kOhms provides simplified circuit design for switching and amplification applications. The part maintains Active product status with RoHS compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design alternatives while maintaining electrical and mechanical compatibility within specified parameter ranges.

Substiute Parts

RN1112ACT(TPL3)

Toshiba Semiconductor and StorageIn Stock: 10784RN1112ACT(TPL3) Datasheet

Current PartRFQ

PDTC124TM,315

Nexperia USA Inc.In Stock: 1066PDTC124TM,315 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN1112ACT(TPL3) is determined by equivalence in the following critical parameters:

Electrical Compatibility Requirements:

• Transistor type classification: NPN - Pre-Biased
• Voltage rating: Collector-emitter breakdown voltage of 50 V or greater
• Base resistor value: 22 kOhms (integrated)
• Package form factor: SC-101 or SOT-883 surface mount

Mechanical Compatibility Requirements:

• Surface mount packaging with identical or compatible footprint
• Supplier device package designation: SOT-883 or equivalent

Performance Envelope:

• Maximum collector current: 80 mA or greater
• Power dissipation capability: 100 mW or greater
• DC current gain (hFE): Minimum 100 at specified conditions
• Saturation voltage: 150 mV or less at specified bias conditions

The PDTC124TM,315 from Nexperia USA Inc. satisfies all substitution criteria through matching voltage rating, base resistor value, package designation, and exceeding minimum current and power specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: RN1112ACT(TPL3)

The RN1112ACT(TPL3) is the specified component with Active product status and RoHS compliance. This part is suitable for applications requiring the stated electrical and thermal specifications within the 80 mA collector current and 100 mW power envelope.

Substitute Part: PDTC124TM,315

The PDTC124TM,315 qualifies as a direct substitute based on electrical parameter equivalence and mechanical compatibility. This part provides enhanced performance margins through higher maximum collector current (100 mA versus 80 mA) and increased power dissipation capability (250 mW versus 100 mW). The PDTC124TM,315 maintains identical voltage rating, base resistor value, and package form factor. Both parts carry Active product status and RoHS compliance. The PDTC124TM,315 includes AEC-Q100 automotive qualification and REACH unaffected status, providing additional compliance documentation for regulated applications.

Selection between these parts depends on application requirements, inventory availability, and compliance documentation needs. Both parts are electrically and mechanically interchangeable within the specified parameter ranges.

Frequently Asked Questions (FAQ)

Q: Can the PDTC124TM,315 replace the RN1112ACT(TPL3) in existing designs?

A: Yes. The PDTC124TM,315 is electrically and mechanically compatible. Both parts share identical voltage rating (50 V), base resistor value (22 kOhms), package designation (SOT-883), and mounting type (surface mount). The PDTC124TM,315 exceeds the minimum specifications for collector current and power dissipation, making it suitable for applications designed for the RN1112ACT(TPL3).

Q: What are the key differences between these parts?

A: The primary differences are manufacturer (Toshiba versus Nexperia), maximum collector current (80 mA versus 100 mA), maximum power dissipation (100 mW versus 250 mW), and DC current gain specification (120 minimum versus 100 minimum). The PDTC124TM,315 includes AEC-Q100 automotive qualification. Both parts maintain identical voltage rating, base resistor value, and package form factor.

Q: Are the packages physically identical?

A: Both parts use the SOT-883 package designation with SC-101 case style. The physical footprint and pin configuration are identical, allowing direct PCB substitution without layout modifications.

Q: What is the significance of the 22 kOhms base resistor?

A: The integrated 22 kOhms base resistor is a pre-biasing element that simplifies circuit design by eliminating the need for external base resistor networks. Both the RN1112ACT(TPL3) and PDTC124TM,315 incorporate this identical resistor value, ensuring equivalent switching characteristics and biasing behavior.

Q: Do both parts meet RoHS requirements?

A: Yes. The RN1112ACT(TPL3) is RoHS Compliant. The PDTC124TM,315 is ROHS3 Compliant. Both parts satisfy RoHS directive requirements and are suitable for applications with RoHS compliance mandates.

Q: What is the moisture sensitivity rating for these parts?

A: Both parts carry MSL 1 (Unlimited) moisture sensitivity level, indicating no moisture sensitivity restrictions. These parts do not require special moisture control during storage, handling, or assembly.

Q: Are there any differences in saturation voltage performance?

A: Both parts specify 150 mV maximum saturation voltage. The PDTC124TM,315 is characterized at higher bias conditions (500µA base current, 10 mA collector current) compared to the RN1112ACT(TPL3) (250µA base current, 5 mA collector current). Both parts meet the 150 mV saturation specification within their respective test conditions.