2SA1577-P-AP Equivalent & Substitute Parts

Part Overview

The 2SA1577-P-AP is a PNP bipolar junction transistor manufactured by Micro Commercial Co, designed for surface mount applications in the SOT-323 package. This component operates at a maximum collector current of 500 mA, collector-emitter breakdown voltage of 32 V, and maximum power dissipation of 200 mW with a transition frequency of 200 MHz. The part is classified as obsolete, which necessitates identification of active equivalent components for ongoing design requirements and production continuity.

Substiute Parts

2SA1577-P-AP

Micro Commercial CoIn Stock: 8462SA1577-P-AP Datasheet

Current PartRFQ

2SA1577T106Q

Rohm SemiconductorIn Stock: 153552SA1577T106Q Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SA1577-P-AP is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Transistor polarity: PNP configuration
• Maximum collector current: 500 mA
• Collector-emitter breakdown voltage: 32 V
• Maximum power dissipation: 200 mW
• Transition frequency: 200 MHz
• Operating temperature range: 150°C (TJ) maximum

Mechanical Equivalence Criteria:

• Package type: SOT-323 / SC-70 surface mount
• Pin configuration: Compatible with SOT-323 footprint

Compliance Equivalence Criteria:

• RoHS3 compliance status
• Moisture sensitivity level: 1 (Unlimited)

The 2SA1577T106Q manufactured by Rohm Semiconductor meets all specified electrical and mechanical parameters, with identical maximum ratings for collector current, breakdown voltage, power dissipation, and transition frequency. Both components share the same base product number (2SA1577) and are housed in equivalent surface mount packages. The substitute part is currently in active production status, providing supply continuity for the obsolete 2SA1577-P-AP.

Parameter Comparison

Engineering Selection Recommendations

The 2SA1577T106Q is a direct functional substitute for the 2SA1577-P-AP based on electrical and mechanical parameter equivalence. Selection of the substitute part is supported by the following factors:

Product Status: The 2SA1577T106Q maintains active production status with Rohm Semiconductor, ensuring long-term supply availability and manufacturing consistency. The original 2SA1577-P-AP is classified as obsolete, making the active substitute the appropriate choice for new designs and production continuity.

Compliance Certification: Both components maintain ROHS3 compliance and identical moisture sensitivity levels (MSL 1 - Unlimited), ensuring compatibility with current manufacturing and environmental standards.

Electrical Equivalence: Maximum ratings for collector current (500 mA), collector-emitter breakdown voltage (32 V), power dissipation (200 mW), and transition frequency (200 MHz) are identical between both parts. These parameters define the operational envelope for circuit design and component selection.

Package Compatibility: Both components utilize the SOT-323 / SC-70 surface mount package, providing direct footprint compatibility on existing printed circuit boards without layout modifications.

Parametric Variations: Differences in Vce saturation voltage and DC current gain are measured under different test conditions and do not affect substitution eligibility. These variations reflect normal manufacturing process differences between manufacturers and do not impact circuit functionality within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can the 2SA1577T106Q be used as a direct replacement for the 2SA1577-P-AP in existing designs?

A: Yes. The 2SA1577T106Q meets all critical electrical and mechanical specifications of the 2SA1577-P-AP, including maximum collector current (500 mA), breakdown voltage (32 V), power dissipation (200 mW), transition frequency (200 MHz), and package type (SOT-323). Direct substitution is supported without circuit modifications.

Q: What is the primary reason for substituting the 2SA1577-P-AP?

A: The 2SA1577-P-AP is classified as obsolete. The 2SA1577T106Q is an active production component from Rohm Semiconductor, providing supply continuity and long-term availability for new designs and production requirements.

Q: Are there package differences between the 2SA1577-P-AP and 2SA1577T106Q?

A: Both components use the SOT-323 / SC-70 surface mount package. The 2SA1577-P-AP is supplied in standard packaging, while the 2SA1577T106Q is available in Cut Tape (CT) and Digi-Reel® formats. The physical package dimensions and pin configuration are identical, ensuring footprint compatibility.

Q: How do the DC current gain specifications differ between these parts?

A: The DC current gain (hFE) specifications are measured under different test conditions. The 2SA1577-P-AP specifies a minimum of 82 @ 10mA, 3V, while the 2SA1577T106Q specifies a minimum of 120 @ 100mA, 3V. These differences reflect manufacturer test methodologies and do not affect substitution eligibility. Both parts operate within the same electrical envelope defined by maximum ratings.

Q: Are both components RoHS compliant?

A: Yes. Both the 2SA1577-P-AP and 2SA1577T106Q are ROHS3 compliant and carry identical moisture sensitivity levels (MSL 1 - Unlimited), ensuring compatibility with current manufacturing standards and environmental regulations.

Q: What is the significance of the base product number 2SA1577?

A: The base product number 2SA1577 identifies the core transistor design. Both the 2SA1577-P-AP and 2SA1577T106Q share this base product number, indicating they are variants of the same fundamental PNP transistor design with identical electrical specifications and performance characteristics.

Q: Can the 2SA1577T106Q handle the same power dissipation as the original part?

A: Yes. Both components have a maximum power dissipation rating of 200 mW and identical thermal operating temperature limits (150°C TJ). Power handling capability is equivalent between the two parts.