2SA1048-Y-AP Equivalent & Substitute Parts

Part Overview

The 2SA1048-Y-AP is a PNP bipolar junction transistor manufactured by Micro Commercial Co, designed for general-purpose switching and amplification applications. This device features a 50 V collector-emitter breakdown voltage rating and supports collector currents up to 150 mA with a maximum power dissipation of 200 mW. The component is packaged in a TO-92S through-hole configuration.

The 2SA1048-Y-AP is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure component availability for production, and support long-term product serviceability when original inventory becomes depleted.

Substiute Parts

2SA1048-Y-AP

Micro Commercial CoIn Stock: 10282SA1048-Y-AP Datasheet

Current PartRFQ

KSA1015YTA

onsemiIn Stock: 59898KSA1015YTA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SA1048-Y-AP is determined by electrical and mechanical parameter equivalence within the PNP bipolar transistor category. The following parameters establish substitution eligibility:

Electrical Parameters (Critical):

• Transistor Type: PNP
• Collector Current Rating (Ic Max): 150 mA
• Collector-Emitter Breakdown Voltage (Vceo Max): 50 V
• Vce Saturation: 300 mV @ 10 mA, 100 mA
• Collector Cutoff Current (ICBO): 100 nA
• DC Current Gain (hFE Min): 120 @ 2 mA, 6 V
• Transition Frequency: 80 MHz

Mechanical Parameters (Critical):

• Mounting Type: Through Hole
• Package / Case: TO-92-3 (compatible with TO-226-3 variants)

Compliance Parameters:

• RoHS3 Compliance
• ECCN: EAR99
• HTSUS: 8541.21.0095

Substitute parts must satisfy all critical electrical and mechanical parameters. Variations in maximum power dissipation above the 200 mW minimum threshold, operating temperature range extensions, and packaging format variants (Cut Tape vs. standard packaging) do not disqualify substitution eligibility when all other parameters align.

Parameter Comparison

Engineering Selection Recommendations

The KSA1015YTA manufactured by onsemi qualifies as a direct substitute for the 2SA1048-Y-AP based on electrical and mechanical parameter equivalence. All critical specifications—collector current, breakdown voltage, saturation characteristics, current gain, and transition frequency—are identical between the two devices.

Availability and Product Status: The 2SA1048-Y-AP is classified as obsolete with limited inventory (993 units). The KSA1015YTA is an active product with substantial inventory availability (59,815 units), ensuring long-term supply chain continuity.

Compliance Alignment: Both devices maintain ROHS3 compliance and share identical ECCN and HTSUS classifications, supporting regulatory and export requirements without modification.

Power Dissipation: The KSA1015YTA features a maximum power rating of 400 mW compared to the 2SA1048-Y-AP's 200 mW specification. This higher rating provides additional thermal margin in applications operating at or near the original device's power limits.

Operating Temperature: The KSA1015YTA specifies an upper operating temperature of 150 °C, matching the 2SA1048-Y-AP maximum. The substitute does not extend the lower temperature bound; applications requiring operation below −55 °C require verification against the KSA1015YTA datasheet.

Package Compatibility: Both devices use TO-92-3 through-hole packaging with formed leads. Physical dimensions and pin configurations are compatible for direct board-level substitution without layout modification.

Frequently Asked Questions (FAQ)

Q: Can the KSA1015YTA be used as a direct replacement for the 2SA1048-Y-AP in existing designs?

A: Yes. The KSA1015YTA meets all critical electrical specifications of the 2SA1048-Y-AP, including collector current, breakdown voltage, saturation characteristics, current gain, and transition frequency. Both devices use compatible TO-92-3 through-hole packaging. No circuit modification is required for substitution.

Q: What are the key differences between these two transistors?

A: The primary differences are manufacturer (Micro Commercial Co vs. onsemi), product status (obsolete vs. active), and maximum power dissipation (200 mW vs. 400 mW). The KSA1015YTA provides higher power handling capability. Operating temperature specifications differ slightly; the KSA1015YTA does not specify a lower temperature bound below −55 °C.

Q: Are there any package compatibility concerns?

A: No. Both devices are packaged in TO-92-3 with formed leads. The 2SA1048-Y-AP is specified as TO-92S (short body), and the KSA1015YTA as TO-92-3 (TO-226AA). These variants are mechanically compatible for through-hole PCB mounting without modification.

Q: Does the higher power rating of the KSA1015YTA affect circuit operation?

A: No. The higher 400 mW maximum power rating of the KSA1015YTA does not alter electrical behavior in circuits designed for the 2SA1048-Y-AP's 200 mW specification. The additional power margin provides thermal headroom without changing device characteristics.

Q: Are both devices RoHS compliant?

A: Yes. Both the 2SA1048-Y-AP and KSA1015YTA are ROHS3 compliant, meeting environmental and regulatory requirements for lead-free manufacturing and hazardous substance restrictions.

Q: What is the inventory status of each part?

A: The 2SA1048-Y-AP has 993 units in stock and is classified as obsolete. The KSA1015YTA has 59,815 units in stock and is an active product, ensuring sustained availability for current and future production requirements.

Q: Can the KSA1015YTA be used in applications requiring operation below −55 °C?

A: The KSA1015YTA datasheet does not specify a lower operating temperature bound. Applications requiring operation below −55 °C require direct verification against the KSA1015YTA manufacturer datasheet to confirm suitability.