KSD2012YYDTU Equivalent & Substitute Parts

Part Overview

The KSD2012YYDTU is a Bipolar (BJT) Transistor manufactured by onsemi, classified as an NPN-type device rated for 60 V collector-emitter breakdown voltage and 3 A maximum collector current. The device is packaged in a TO-220-3 Full Pack with formed leads (TO-220F-3 Y-Forming configuration) and is designed for through-hole mounting applications requiring 25 W power dissipation capability.

The KSD2012YYDTU carries an Obsolete product status. Locating equivalent substitute components is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for applications utilizing this transistor.

Substiute Parts

KSD2012YYDTU

onsemiIn Stock: 1090KSD2012YYDTU Datasheet

Current PartRFQ

KSD2012GTU

Fairchild SemiconductorIn Stock: 3178KSD2012GTU Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the KSD2012YYDTU are identified based on strict electrical and mechanical parameter matching within the allowed specifications for NPN Bipolar (BJT) Transistors. The substitution criteria are:

Electrical Parameters (Must Match):

• Transistor Type: NPN
• Current - Collector (Ic) (Max): 3 A
• Voltage - Collector Emitter Breakdown (Max): 60 V
• Power - Max: 25 W
• Frequency - Transition: 3 MHz
• Operating Temperature (TJ): 150°C
• Vce Saturation (Max) @ Ib, Ic: 1V @ 200mA, 2A
• Current - Collector Cutoff (Max): 100µA (ICBO)

Mechanical Parameters (Must Match):

• Mounting Type: Through Hole
• Package / Case: TO-220-3 Full Pack
• Supplier Device Package: TO-220F-3

The KSD2012GTU manufactured by Fairchild Semiconductor meets all mandatory electrical and mechanical parameters and is classified as a direct substitute for the KSD2012YYDTU.

Parameter Comparison

Engineering Selection Recommendations

The KSD2012GTU manufactured by Fairchild Semiconductor is a direct electrical and mechanical equivalent to the KSD2012YYDTU. Both devices share identical maximum ratings for collector current (3 A), collector-emitter breakdown voltage (60 V), power dissipation (25 W), transition frequency (3 MHz), and operating temperature (150°C). Both are packaged in TO-220-3 Full Pack configurations suitable for through-hole mounting.

The primary distinction between the two devices is product status: the KSD2012YYDTU is classified as Obsolete, while the KSD2012GTU maintains Active status. The KSD2012GTU is manufactured by Fairchild Semiconductor and is available in higher inventory quantities (3098 Pcs), providing improved supply chain continuity compared to the obsolete onsemi part.

The KSD2012GTU exhibits a higher minimum DC Current Gain (hFE) specification of 150 @ 500mA, 5V compared to the KSD2012YYDTU specification of 100 @ 500mA, 5V. This parameter difference does not preclude substitution; the higher gain value represents an enhanced performance characteristic within the same functional class.

Selection of the KSD2012GTU is supported by active product status, established supply availability, and full electrical and mechanical parameter compatibility with the obsolete KSD2012YYDTU.

Frequently Asked Questions (FAQ)

Q: Can the KSD2012GTU be used as a direct replacement for the KSD2012YYDTU in existing circuit designs?

A: Yes. The KSD2012GTU meets all electrical and mechanical specifications required for direct substitution. Both devices are NPN Bipolar (BJT) Transistors with identical maximum ratings for collector current (3 A), collector-emitter breakdown voltage (60 V), power dissipation (25 W), and operating temperature (150°C). Both are packaged in TO-220-3 Full Pack configurations for through-hole mounting.

Q: What is the significance of the higher DC Current Gain (hFE) specification in the KSD2012GTU?

A: The KSD2012GTU specifies a minimum DC Current Gain of 150 @ 500mA, 5V, compared to 100 @ 500mA, 5V for the KSD2012YYDTU. This represents a higher gain characteristic in the substitute part. In applications where base drive current is limited, the higher gain may reduce base current requirements. Circuit designs that accommodate the original specification will function with the substitute part.

Q: Are there any package or lead configuration differences between the KSD2012YYDTU and KSD2012GTU?

A: Both devices utilize TO-220-3 Full Pack configurations for through-hole mounting. The KSD2012YYDTU specifies TO-220F-3 (Y-Forming) with formed leads, while the KSD2012GTU specifies TO-220F-3 without additional lead-forming designation. Both configurations are mechanically compatible with standard TO-220-3 through-hole footprints.

Q: Why is the KSD2012YYDTU classified as Obsolete?

A: The KSD2012YYDTU carries an Obsolete product status designation from onsemi. The KSD2012GTU from Fairchild Semiconductor maintains Active status and is available in production quantities, making it the recommended substitute for ongoing applications.

Q: Are there compliance or certification differences between the two parts?

A: The KSD2012YYDTU is classified as REACH Unaffected. The KSD2012GTU is classified as REACH Affected. Both devices carry Moisture Sensitivity Level (MSL) classifications appropriate for their respective manufacturing and supply chain requirements. Applications subject to specific regulatory compliance requirements should verify alignment with the substitute part's compliance status.