KSC1815GRBU Equivalent & Substitute Parts

Part Overview

The KSC1815GRBU is an NPN bipolar junction transistor manufactured by onsemi, rated for 50V collector-emitter breakdown voltage and 150mA maximum collector current. This through-hole TO-92-3 package device is designed for general-purpose switching and amplification applications. The part is currently listed as obsolete, making identification of equivalent and substitute components necessary for ongoing design support, maintenance, and production continuity.

Substiute Parts

KSC1815GRBU

onsemiIn Stock: 884KSC1815GRBU Datasheet

Current PartRFQ

2N6428 PBFREE

Central Semiconductor CorpIn Stock: 9712N6428 PBFREE Datasheet

SimilarRFQ

2SC1815 PBFREE

Central Semiconductor CorpIn Stock: 10872SC1815 PBFREE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the KSC1815GRBU are identified based on strict electrical and mechanical parameter alignment within the NPN bipolar transistor category. The substitution logic is based on the following critical parameters:

Electrical Compatibility Criteria:

• Transistor Type: NPN (required match)
• Voltage - Collector Emitter Breakdown (Max): 50V (required match)
• Current - Collector (Ic) (Max): 150mA minimum (equal or greater acceptable)
• Power - Max: 400mW minimum (equal or greater acceptable)
• Frequency - Transition: 80MHz minimum (equal or greater acceptable)
• Package / Case: TO-92-3 (required match for mechanical compatibility)
• Mounting Type: Through Hole (required match)

Compliance Criteria:

• REACH Status: REACH Unaffected (maintained across substitutes)
• ECCN: EAR99 (maintained across substitutes)

Substitute parts meeting all electrical parameters within or exceeding the KSC1815GRBU specifications and maintaining identical package and mounting characteristics are listed below.

Parameter Comparison

Engineering Selection Recommendations

2SC1815 PBFREE (Central Semiconductor Corp)

The 2SC1815 PBFREE is a direct electrical and mechanical equivalent to the KSC1815GRBU. Both devices share identical maximum ratings for collector-emitter breakdown voltage (50V), collector current (150mA), power dissipation (400mW), and transition frequency (80MHz). Saturation voltage and collector cutoff current specifications are identical. The part is currently in active product status with RoHS3 compliance and maintains REACH Unaffected designation. This substitute provides the most direct replacement path with no parameter derating required.

2N6428 PBFREE (Central Semiconductor Corp)

The 2N6428 PBFREE exceeds the KSC1815GRBU specifications in collector current (200mA versus 150mA), power dissipation (1.5W versus 400mW), and transition frequency (100MHz versus 80MHz). The device maintains the required 50V collector-emitter breakdown voltage and TO-92-3 package configuration. This substitute is suitable for applications where higher current capacity or power handling is beneficial. The part is currently in active product status with RoHS3 compliance. Note that saturation voltage is higher (600mV versus 250mV), which may affect switching performance in saturation-mode applications.

Both substitute parts maintain compliance certifications (REACH Unaffected, EAR99) and are available in active product status, providing long-term supply continuity compared to the obsolete KSC1815GRBU.

Frequently Asked Questions (FAQ)

Q: Can the 2SC1815 PBFREE be used as a direct replacement for the KSC1815GRBU?

A: Yes. The 2SC1815 PBFREE meets all electrical and mechanical specifications of the KSC1815GRBU. Both devices are rated for 50V collector-emitter breakdown, 150mA maximum collector current, 400mW power dissipation, and 80MHz transition frequency. The TO-92-3 through-hole package is identical. No circuit modifications are required.

Q: What is the primary difference between the 2SC1815 PBFREE and 2N6428 PBFREE?

A: The 2N6428 PBFREE provides higher current capacity (200mA versus 150mA) and greater power dissipation capability (1.5W versus 400mW). Both maintain the 50V voltage rating and TO-92-3 package. The 2N6428 PBFREE has a higher saturation voltage (600mV versus 250mV), which may impact switching speed in saturation-mode circuits.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both 2SC1815 PBFREE and 2N6428 PBFREE are RoHS3 compliant. The "PBFREE" designation indicates lead-free construction.

Q: Do the substitute parts have the same package configuration?

A: Yes. All three parts (KSC1815GRBU, 2SC1815 PBFREE, and 2N6428 PBFREE) use the TO-92-3 through-hole package with identical pin configuration and mechanical dimensions.

Q: What is the DC current gain difference between the KSC1815GRBU and 2SC1815 PBFREE?

A: The KSC1815GRBU specifies a minimum DC current gain (hFE) of 200 at 2mA and 6V. The 2SC1815 PBFREE specifies a minimum hFE of 70 at the same conditions. This difference may affect base drive requirements in amplifier circuits but does not prevent substitution in switching applications.

Q: Can the 2N6428 PBFREE be used in all applications designed for the KSC1815GRBU?

A: The 2N6428 PBFREE can be used in most applications. Its higher current and power ratings provide additional design margin. However, the higher saturation voltage (600mV versus 250mV) may affect switching performance in circuits optimized for the lower saturation voltage of the original part. Circuit verification is appropriate for saturation-mode switching applications.

Q: What is the product status of the substitute parts?

A: Both 2SC1815 PBFREE and 2N6428 PBFREE are listed as active products, ensuring ongoing availability and supply continuity compared to the obsolete KSC1815GRBU.