2SB647L-B-AP Equivalent & Substitute Parts

Part Overview

The 2SB647L-B-AP is a PNP bipolar junction transistor manufactured by Micro Commercial Co, rated for 80V collector-emitter breakdown voltage and 1A maximum collector current. This device is packaged in a TO-92 through-hole configuration and is classified as obsolete. Due to its obsolete status, identifying functionally equivalent active alternatives is necessary for ongoing design support, production continuity, and component sourcing in applications requiring PNP transistor functionality within the specified electrical parameters.

Substiute Parts

2SB647L-B-AP

Micro Commercial CoIn Stock: 9732SB647L-B-AP Datasheet

Current PartRFQ

PN4033 PBFREE

Central Semiconductor CorpIn Stock: 935PN4033 PBFREE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SB647L-B-AP is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Transistor polarity: PNP
• Maximum collector current: 1 A minimum
• Maximum collector-emitter breakdown voltage: 80 V minimum
• Mounting type: Through Hole
• Package type: TO-92-3 compatible
• RoHS compliance: ROHS3 Compliant

The PN4033 PBFREE meets all mandatory substitution criteria. Both devices share identical maximum ratings for collector current (1 A) and collector-emitter breakdown voltage (80 V), operate in through-hole TO-92-3 packages, and maintain ROHS3 compliance. The PN4033 PBFREE is classified as active product status, providing ongoing availability and supply chain continuity compared to the obsolete 2SB647L-B-AP.

Parameter Comparison

Engineering Selection Recommendations

The PN4033 PBFREE is a direct substitute for the 2SB647L-B-AP based on electrical and mechanical parameter equivalence. Selection of the PN4033 PBFREE provides the following advantages:

Product Status: The PN4033 PBFREE maintains active product status with confirmed inventory availability (828 Pcs), whereas the 2SB647L-B-AP is obsolete. This ensures long-term supply chain reliability and production continuity.

Regulatory Compliance: Both devices are ROHS3 compliant, maintaining equivalent environmental and regulatory standing. The PN4033 PBFREE additionally carries REACH Unaffected status, providing expanded compliance documentation.

Electrical Performance: The PN4033 PBFREE demonstrates superior electrical characteristics within the same maximum ratings. Lower collector cutoff current (50nA versus 10µA) and higher DC current gain (100 versus 60) indicate improved performance margins. The higher transition frequency (400MHz versus 140MHz) provides additional operational headroom for high-frequency applications.

Thermal Performance: The PN4033 PBFREE supports an extended lower operating temperature limit (-65°C versus -55°C), expanding the usable temperature range for cold-environment applications.

Power Dissipation: The PN4033 PBFREE operates at 625mW maximum power dissipation compared to 750mW for the 2SB647L-B-AP. Applications operating near thermal limits require verification that the reduced power rating remains acceptable for the specific use case.

Frequently Asked Questions (FAQ)

Q: Can the PN4033 PBFREE directly replace the 2SB647L-B-AP in existing designs?

A: Yes. Both devices share identical maximum collector current (1 A) and collector-emitter breakdown voltage (80 V) ratings, operate in compatible TO-92-3 packages, and maintain ROHS3 compliance. No circuit modifications are required for direct substitution.

Q: What are the differences in saturation voltage between these devices?

A: The 2SB647L-B-AP exhibits 1V saturation voltage at 50mA base current and 500mA collector current, while the PN4033 PBFREE exhibits 500mV under identical conditions. The lower saturation voltage of the PN4033 PBFREE reduces power dissipation in switching applications.

Q: Does the lower power rating of the PN4033 PBFREE affect substitution suitability?

A: The PN4033 PBFREE is rated for 625mW maximum power dissipation compared to 750mW for the 2SB647L-B-AP. Applications must operate within the 625mW limit. Designs operating near the 750mW threshold require thermal analysis to confirm compatibility with the reduced rating.

Q: Are the operating temperature ranges compatible?

A: The PN4033 PBFREE supports -65°C to 150°C, while the 2SB647L-B-AP supports -55°C to 150°C. The PN4033 PBFREE provides extended low-temperature capability. Both devices support the same upper temperature limit of 150°C.

Q: What is the significance of the higher transition frequency in the PN4033 PBFREE?

A: The PN4033 PBFREE operates at 400MHz transition frequency compared to 140MHz for the 2SB647L-B-AP. This higher frequency capability provides improved performance in high-frequency switching and amplification circuits, though it does not affect substitution in applications operating below 140MHz.

Q: How do the DC current gain specifications compare?

A: The 2SB647L-B-AP specifies minimum hFE of 60 at 150mA collector current and 5V collector-emitter voltage. The PN4033 PBFREE specifies minimum hFE of 100 at 100mA collector current and 5V collector-emitter voltage. The PN4033 PBFREE demonstrates higher current gain, providing improved amplification characteristics.

Q: Are both devices available in the same packaging format?

A: Yes. Both devices are packaged in TO-92-3 (TO-226AA) through-hole configuration with formed leads, ensuring mechanical and electrical compatibility in existing PCB layouts.

Q: What is the inventory status for each device?

A: The 2SB647L-B-AP has 918 Pcs in stock but is classified as obsolete. The PN4033 PBFREE has 828 Pcs in stock and is classified as active product status, ensuring continued availability and supply chain support.