2SC4027T-TL-H Equivalent & Substitute Parts

Part Overview

The 2SC4027T-TL-H is an NPN bipolar junction transistor manufactured by onsemi, rated for 160 V collector-emitter breakdown voltage and 1.5 A maximum collector current. This surface mount device in TO-252-3 (DPAK) packaging is designed for general-purpose switching and amplification applications requiring 1 W power dissipation and 120 MHz transition frequency. The part is classified as obsolete, necessitating identification of equivalent alternatives for ongoing production and maintenance applications.

Substiute Parts

2SC4027T-TL-H

onsemiIn Stock: 9562SC4027T-TL-H Datasheet

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2SC4027T-TL-E

onsemiIn Stock: 172062SC4027T-TL-E Datasheet

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2SD1918TLQ

Rohm SemiconductorIn Stock: 128092SD1918TLQ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SC4027T-TL-H is determined by equivalence in the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Transistor Type: NPN
• Voltage - Collector Emitter Breakdown (Max): 160 V
• Current - Collector (Ic) (Max): 1.5 A
• Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63
• Mounting Type: Surface Mount

Secondary Compatibility Parameters:

• Operating Temperature (TJ): 150°C
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Parts meeting all primary criteria are classified as direct substitutes. Variations in secondary parameters such as DC Current Gain (hFE), Vce Saturation, Power dissipation capability, and Frequency - Transition do not preclude substitution when the primary electrical and mechanical specifications are satisfied.

Parameter Comparison

Engineering Selection Recommendations

2SC4027T-TL-E (onsemi)

The 2SC4027T-TL-E is the primary substitute for the obsolete 2SC4027T-TL-H. Both parts are manufactured by onsemi and share identical electrical specifications including voltage rating, current rating, power dissipation, and transition frequency. The 2SC4027T-TL-E maintains Active product status, ensuring continued availability and supply chain reliability. Packaging, RoHS compliance, and moisture sensitivity specifications are identical. The primary distinction is packaging format: 2SC4027T-TL-E is supplied in Tape & Reel (TR) format, whereas the original part uses Cut Tape (CT) & Digi-Reel® packaging. This substitute is suitable for direct replacement in production environments.

2SD1918TLQ (Rohm Semiconductor)

The 2SD1918TLQ is a secondary substitute meeting all primary electrical and mechanical substitution criteria. This part maintains the same voltage rating (160 V), collector current rating (1.5 A), and package type (TO-252-3, DPAK). However, the 2SD1918TLQ exhibits differences in secondary parameters: higher power dissipation capability (10 W versus 1 W), lower transition frequency (80 MHz versus 120 MHz), and elevated Vce saturation voltage (2V @ 100mA, 1A versus 450mV @ 50mA, 500mA). The product status is classified as Not For New Designs. This substitute is applicable for maintenance and repair of existing equipment where the enhanced power handling and lower frequency characteristics do not conflict with circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can the 2SC4027T-TL-E directly replace the 2SC4027T-TL-H in existing designs?

A: Yes. Both parts are manufactured by onsemi and share identical electrical specifications for voltage rating, current rating, power dissipation, and transition frequency. The primary difference is packaging format (Tape & Reel versus Cut Tape & Digi-Reel). Mechanical compatibility with the TO-252-3 DPAK footprint is identical. The 2SC4027T-TL-E is the recommended substitute for new production.

Q: What are the limitations of using 2SD1918TLQ as a substitute?

A: The 2SD1918TLQ meets primary substitution criteria but exhibits secondary parameter differences. The transition frequency is reduced to 80 MHz (from 120 MHz), and Vce saturation voltage is significantly higher at 2V (from 450mV). These characteristics may affect circuit performance in high-frequency switching applications or circuits with tight saturation voltage requirements. The product status is Not For New Designs. Use this substitute only when circuit design tolerances accommodate these parameter variations.

Q: Are all three parts compatible with the same PCB footprint?

A: Yes. All three parts use the TO-252-3 DPAK (2 Leads + Tab) package designation SC-63. PCB footprint compatibility is confirmed. However, verify that the circuit design accommodates any secondary parameter differences before implementation.

Q: What is the difference between Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) packaging?

A: Both packaging formats contain the same component in identical packages. Cut Tape & Digi-Reel® is supplied in shorter tape lengths suitable for smaller volume orders, while Tape & Reel is supplied in full reel quantities for high-volume production. Component electrical and mechanical specifications are identical.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The 2SC4027T-TL-H, 2SC4027T-TL-E, and 2SD1918TLQ are all ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited). All parts meet the same environmental and compliance standards.

Q: Which substitute should be selected for new product designs?

A: The 2SC4027T-TL-E is the recommended substitute for new designs. It maintains Active product status, ensuring long-term availability and supply chain continuity. Electrical specifications are identical to the original part, and it is manufactured by the same supplier (onsemi).