MPS8599RLRAG Equivalent & Substitute Parts

Part Overview

The MPS8599RLRAG is a PNP bipolar junction transistor manufactured by onsemi, rated for 80 V collector-emitter breakdown voltage and 500 mA maximum collector current. This device is packaged in a Through Hole TO-92 (TO-226-3) configuration and is designed for general-purpose switching and amplification applications. The part is classified as obsolete, making identification of functionally equivalent substitutes necessary for ongoing design support and procurement continuity.

Substiute Parts

MPS8599RLRAG

onsemiIn Stock: 1087MPS8599RLRAG Datasheet

Current PartRFQ

MPSA56-AP

Micro Commercial CoIn Stock: 893MPSA56-AP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MPS8599RLRAG is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Transistor polarity (PNP)
• Maximum collector current rating (500 mA)
• Collector-emitter breakdown voltage (80 V)
• Maximum power dissipation (625 mW)
• Operating temperature range (−55°C to +150°C)
• Through Hole mounting configuration
• TO-92 package form factor

The MPSA56-AP meets all critical electrical specifications and maintains identical package geometry, enabling direct functional substitution in applications where the MPS8599RLRAG is specified. Both devices operate within the same voltage and current envelope and share compatible thermal characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the MPS8599RLRAG and MPSA56-AP are classified as obsolete products. The MPSA56-AP is the direct functional equivalent, meeting all critical electrical and mechanical specifications required for substitution.

Selection Basis:

The MPSA56-AP maintains electrical parity across maximum ratings (voltage, current, power) and thermal operating range. The device is packaged identically in TO-92 form factor, enabling direct board-level replacement without layout modification.

The MPSA56-AP carries ROHS3 compliance certification, providing regulatory advantage for applications subject to environmental standards. The MPS8599RLRAG compliance status is not specified in available documentation.

Transition frequency differs between devices (150 MHz versus 50 MHz). Applications requiring high-frequency switching performance above 50 MHz should retain the MPS8599RLRAG if available. For general-purpose switching and low-frequency amplification, the MPSA56-AP operates within specified performance envelope.

Saturation voltage characteristics differ at specified test conditions. The MPSA56-AP exhibits lower saturation voltage (250 mV versus 400 mV), which may provide marginal efficiency improvement in switching applications but does not affect functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can the MPSA56-AP directly replace the MPS8599RLRAG in existing designs?

A: Yes. Both devices are PNP transistors with identical maximum ratings (80 V, 500 mA, 625 mW) and operate across the same temperature range (−55°C to +150°C). The TO-92 package geometry is identical, enabling direct pin-compatible substitution without circuit modification.

Q: What are the differences between these two parts?

A: The primary differences are transition frequency (MPS8599RLRAG: 150 MHz; MPSA56-AP: 50 MHz) and saturation voltage characteristics at specified test conditions. The MPSA56-AP also carries ROHS3 compliance certification. These differences do not affect functional substitution in standard switching and amplification applications.

Q: Are there any frequency-dependent applications where substitution is not suitable?

A: Applications requiring transition frequencies above 50 MHz should use the MPS8599RLRAG if available. The MPSA56-AP is rated for 50 MHz maximum transition frequency and may not perform adequately in high-frequency switching circuits operating above this specification.

Q: What is the significance of the different saturation voltage specifications?

A: Saturation voltage is specified at different operating points for each device. The MPSA56-AP exhibits lower saturation voltage (250 mV at 10 mA base current, 100 mA collector current) compared to the MPS8599RLRAG (400 mV at 5 mA base current, 100 mA collector current). This difference is not critical for general-purpose applications but may affect efficiency in high-current switching circuits.

Q: Does the MPSA56-AP meet environmental compliance requirements?

A: The MPSA56-AP is ROHS3 compliant. The MPS8599RLRAG compliance status is not specified in available documentation. Applications subject to environmental standards should use the MPSA56-AP to ensure regulatory compliance.

Q: Are both parts currently available for procurement?

A: Both the MPS8599RLRAG and MPSA56-AP are classified as obsolete. Procurement should be directed toward available inventory or alternative current-production PNP transistors meeting the specified electrical and mechanical requirements.

Q: What is the package compatibility between these devices?

A: Both devices use the TO-92 (TO-226-3) Through Hole package with formed leads. Pin configuration and physical dimensions are identical, enabling direct board-level substitution without layout changes.