2SD2257,Q(J Equivalent & Substitute Parts

Part Overview

The 2SD2257,Q(J is an NPN bipolar junction transistor manufactured by Toshiba Semiconductor and Storage, designed for general-purpose switching and amplification applications. This component features a TO-220-3 through-hole package rated for 100 V collector-emitter breakdown voltage and 3 A maximum collector current with 2 W power dissipation capability.

The 2SD2257,Q(J is classified as obsolete. Locating equivalent substitute parts is necessary to support ongoing maintenance, repair, and production requirements for legacy equipment and systems utilizing this transistor.

Substiute Parts

2SD2257,Q(J

Toshiba Semiconductor and StorageIn Stock: 7892SD2257,Q(J Datasheet

Current PartRFQ

TTD1415B,S4X(S

Toshiba Semiconductor and StorageIn Stock: 1057TTD1415B,S4X(S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 2SD2257,Q(J are identified based on electrical and mechanical compatibility within the NPN bipolar junction transistor category. The primary substitution criteria are:

Electrical Parameters:

• Transistor polarity: NPN configuration
• Voltage rating: Collector-emitter breakdown voltage of 100 V or greater
• Current rating: Maximum collector current of 3 A or greater
• Power dissipation: 2 W or greater
• Saturation characteristics: Vce saturation performance suitable for switching applications
• Current gain: DC current gain (hFE) supporting the required amplification or switching function

Mechanical Parameters:

• Package type: TO-220-3 through-hole configuration for direct board-level compatibility
• Mounting compatibility: Through-hole mounting on standard PCB layouts
• Thermal characteristics: Operating temperature range supporting 150°C junction temperature operation

The TTD1415B,S4X(S meets these substitution criteria and is classified as an active product with current manufacturing support.

Parameter Comparison

Engineering Selection Recommendations

The TTD1415B,S4X(S is an active product manufactured by Toshiba Semiconductor and Storage and serves as a direct substitute for the obsolete 2SD2257,Q(J. Both components share identical package configuration (TO-220-3), mounting methodology (through-hole), and regulatory classification (EAR99, HTSUS 8541.29.0095).

The TTD1415B,S4X(S maintains MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard storage and handling procedures. As an active product, the TTD1415B,S4X(S benefits from ongoing manufacturing support and documented availability, addressing supply chain continuity for applications previously dependent on the 2SD2257,Q(J.

Selection of the TTD1415B,S4X(S for replacement applications is supported by electrical parameter alignment and mechanical interchangeability within the TO-220-3 package footprint.

Frequently Asked Questions (FAQ)

Q: Can the TTD1415B,S4X(S directly replace the 2SD2257,Q(J in existing circuit designs?

A: The TTD1415B,S4X(S is electrically and mechanically compatible with the 2SD2257,Q(J. Both components are NPN bipolar junction transistors in TO-220-3 packages with identical pin configurations. Direct substitution is supported for applications within the specified electrical parameter ranges.

Q: What is the primary reason for seeking a substitute for the 2SD2257,Q(J?

A: The 2SD2257,Q(J is classified as obsolete. The TTD1415B,S4X(S is an active product with current manufacturing availability, providing supply chain continuity and long-term component availability for legacy system support and repair.

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

A: Both the 2SD2257,Q(J and TTD1415B,S4X(S are classified as MSL Level 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply to both components.

Q: Does the TTD1415B,S4X(S meet the same regulatory classifications as the 2SD2257,Q(J?

A: Yes. Both components share identical ECCN (EAR99) and HTSUS (8541.29.0095) classifications, ensuring regulatory compliance equivalence for export and trade purposes.

Q: What mounting considerations apply when substituting the TTD1415B,S4X(S for the 2SD2257,Q(J?

A: Both components utilize through-hole mounting in TO-220-3 packages. PCB footprint compatibility is maintained, and no modifications to mounting hardware or thermal management structures are required for direct substitution.