Equivalent & Substitute Parts for 2DB1119S-13

Part Overview

The 2DB1119S-13 is a PNP bipolar junction transistor manufactured by Diodes Incorporated, rated for 25 V collector-emitter breakdown voltage and 1 A maximum collector current. This component is designed for surface mount applications in the SOT-89-3 package and operates across a temperature range of -55°C to 150°C. The part is classified as obsolete, making identification of suitable substitute components necessary for ongoing design support and procurement continuity.

Substiute Parts

2DB1119S-13

Diodes IncorporatedIn Stock: 39622DB1119S-13 Datasheet

Current PartRFQ

FCX591ATA

Diodes IncorporatedIn Stock: 15986FCX591ATA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2DB1119S-13 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Transistor type must be PNP
• Package must be TO-243AA (SOT-89-3) surface mount
• Maximum collector current must be ≥ 1 A
• Maximum power dissipation must be ≥ 1 W
• Mounting type must be surface mount
• RoHS3 compliance required

Allowable Parameter Variations:

• Collector-emitter breakdown voltage may exceed 25 V (higher voltage rating provides backward compatibility)
• Transition frequency may be lower than 200 MHz (frequency reduction does not prevent substitution in DC or low-frequency applications)
• Operating temperature range may be extended (wider range provides enhanced capability)
• DC current gain (hFE) may differ from the original specification

The FCX591ATA meets all mandatory compatibility criteria and is classified as an active product with enhanced electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

The FCX591ATA is a direct substitute for the 2DB1119S-13 based on the following engineering criteria:

Product Status Advantage: The FCX591ATA is classified as an active product with current manufacturing support and availability, whereas the 2DB1119S-13 is obsolete. This ensures long-term supply chain reliability and technical support.

Compliance Alignment: Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility in existing designs and manufacturing processes.

Electrical Compatibility: The FCX591ATA provides a higher collector-emitter breakdown voltage rating (40 V versus 25 V), which ensures backward compatibility with circuits designed for the 2DB1119S-13. All other critical parameters—collector current, power dissipation, package type, and mounting configuration—are identical or equivalent.

Enhanced Specifications: The FCX591ATA offers improved DC current gain (300 versus 140 minimum) and extended low-temperature operating range (-65°C versus -55°C), providing additional design margin without requiring circuit modifications.

Transition Frequency Consideration: The FCX591ATA operates at 150 MHz compared to the 2DB1119S-13 at 200 MHz. This reduction does not affect substitution validity for applications operating below 150 MHz or for DC-biased circuits where transition frequency is not a limiting factor.

Frequently Asked Questions (FAQ)

Q: Can the FCX591ATA replace the 2DB1119S-13 in all applications?

A: The FCX591ATA is electrically compatible with the 2DB1119S-13 for applications where the operating frequency does not exceed 150 MHz. The higher voltage rating (40 V) and improved current gain provide enhanced performance margins. Verify that your circuit operates within the FCX591ATA's transition frequency specification before implementation.

Q: What is the significance of the higher collector-emitter breakdown voltage in the FCX591ATA?

A: The FCX591ATA's 40 V rating exceeds the 2DB1119S-13's 25 V specification. This higher rating provides additional safety margin and prevents device failure in circuits with voltage transients or overshoot conditions. The substitute part will not be damaged by voltages that would exceed the original part's rating.

Q: Are the package dimensions identical between these two parts?

A: Both the 2DB1119S-13 and FCX591ATA use the TO-243AA package (SOT-89-3) for surface mount applications. The physical dimensions, pin configuration, and PCB footprint are identical, allowing direct substitution without layout modifications.

Q: Does the lower transition frequency of the FCX591ATA affect high-speed circuit performance?

A: The FCX591ATA operates at 150 MHz compared to the 2DB1119S-13 at 200 MHz. For applications requiring switching speeds above 150 MHz, the FCX591ATA may not be suitable. For DC amplification, low-frequency switching, or applications below 150 MHz, the transition frequency difference is not a limiting factor.

Q: What is the impact of the improved DC current gain in the FCX591ATA?

A: The FCX591ATA provides a minimum DC current gain of 300 compared to 140 in the 2DB1119S-13. This improvement allows circuits to operate with lower base drive currents while achieving the same collector current, potentially reducing power consumption in base drive circuits.

Q: Are there any moisture sensitivity or handling differences between these parts?

A: Both components carry an MSL (Moisture Sensitivity Level) rating of 1 (Unlimited), indicating no special moisture control requirements during storage or handling. Standard ESD precautions apply to both parts.

Q: Can I use the FCX591ATA in a design originally specified for the 2DB1119S-13 without circuit redesign?

A: Yes, the FCX591ATA is a direct substitute requiring no circuit modifications. The identical package, mounting type, and compatible electrical specifications ensure drop-in replacement capability. However, verify that your application's operating frequency does not exceed 150 MHz.