KSC2682YSTU Equivalent & Substitute Parts

Part Overview

The KSC2682YSTU is an NPN Bipolar Junction Transistor (BJT) manufactured by onsemi, designed for general-purpose switching and amplification applications. This device features a maximum collector-emitter breakdown voltage of 180 V, a maximum collector current of 100 mA, and a maximum power dissipation of 1.2 W in a Through Hole TO-126-3 package.

The KSC2682YSTU is classified as an obsolete product. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

KSC2682YSTU

onsemiIn Stock: 5726KSC2682YSTU Datasheet

Current PartRFQ

MJE340

NTE Electronics, IncIn Stock: 2035MJE340 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KSC2682YSTU with alternative NPN BJT transistors is determined by the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Transistor Type: NPN configuration required
• Mounting Type: Through Hole required
• Package / Case: TO-126-3 compatible package required
• Voltage - Collector Emitter Breakdown (Max): Must equal or exceed 180 V
• Current - Collector (Ic) (Max): Must equal or exceed 100 mA
• Power - Max: Must equal or exceed 1.2 W

Secondary Compatibility Factors:

• DC Current Gain (hFE): Minimum 160 @ 10mA, 5V preferred for direct replacement
• Vce Saturation: 500mV @ 5mA, 50mA preferred for switching applications
• Frequency - Transition: 200 MHz preferred for high-frequency applications

The MJE340 is identified as a substitute part. This device meets or exceeds all primary substitution criteria, providing enhanced electrical performance characteristics while maintaining mechanical compatibility through the TO-126-3 package format.

Parameter Comparison

Engineering Selection Recommendations

KSC2682YSTU (Main Part):

• Product Status: Obsolete
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected
• ECCN Classification: EAR99
• Current Inventory: 5705 Pcs New Original In Stock

The KSC2682YSTU remains available in inventory. Selection of this part is appropriate for applications where existing design specifications, documentation, and qualification records reference this specific part number.

MJE340 (Substitute Part):

• Product Status: Active
• RoHS Status: RoHS non-compliant
• ECCN Classification: EAR99
• Current Inventory: 1957 Pcs New Original In Stock

The MJE340 is an active product manufactured by NTE Electronics, Inc. This substitute part provides enhanced electrical performance across all primary parameters: 300 V breakdown voltage (versus 180 V), 500 mA maximum collector current (versus 100 mA), and 20 W maximum power dissipation (versus 1.2 W). Both parts share identical package and mounting specifications (TO-126-3, Through Hole).

Selection of the MJE340 is appropriate for new designs, production continuity when the KSC2682YSTU becomes unavailable, or applications where the enhanced electrical ratings provide design margin. The RoHS non-compliant status of the MJE340 must be evaluated against project compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can the MJE340 directly replace the KSC2682YSTU in existing circuits?

A: The MJE340 is mechanically and electrically compatible with the KSC2682YSTU. Both devices use the TO-126-3 Through Hole package and share identical pinout configuration. The MJE340 exceeds all primary electrical specifications of the KSC2682YSTU (higher breakdown voltage, higher collector current, higher power rating). Direct substitution is supported from an electrical and mechanical standpoint. However, the DC current gain (hFE) is specified at different operating points: KSC2682YSTU at 10mA/5V versus MJE340 at 50mA/10V. Circuit performance should be evaluated if the application depends on specific current gain characteristics at the original operating point.

Q: What is the primary reason for substituting the KSC2682YSTU?

A: The KSC2682YSTU is classified as an obsolete product. The MJE340 is an active product with confirmed ongoing availability. Substitution is necessary to ensure long-term supply chain continuity and support for production or repair activities.

Q: Are there any compliance differences between the KSC2682YSTU and MJE340?

A: Both parts share the same ECCN classification (EAR99). The KSC2682YSTU is REACH Unaffected. The MJE340 is RoHS non-compliant. Projects subject to RoHS compliance requirements must evaluate this difference before selecting the MJE340 as a substitute.

Q: Do both parts use the same package?

A: Yes. Both the KSC2682YSTU and MJE340 use the TO-126-3 Through Hole package. Mechanical compatibility is confirmed, and no PCB layout modifications are required for substitution.

Q: What are the key electrical differences between these parts?

A: The MJE340 provides enhanced electrical performance across all primary ratings. Maximum collector-emitter breakdown voltage is 300 V (versus 180 V), maximum collector current is 500 mA (versus 100 mA), and maximum power dissipation is 20 W (versus 1.2 W). These higher ratings provide additional design margin in applications operating near the limits of the KSC2682YSTU specifications.

Q: Is the MJE340 suitable for high-frequency applications?

A: The transition frequency specification is not provided for the MJE340. The KSC2682YSTU specifies a transition frequency of 200 MHz. Applications requiring confirmed high-frequency performance should evaluate the MJE340 datasheet for frequency response characteristics before selection.