Toshiba Semiconductor and Storage 2SC3303-Y(T6L1,NQ)

Overview

2SC3303-Y(T6L1,NQ) from TOSHIBA is a silicon NPN epitaxial transistor using PCT process, designed for high-current switching in DC-DC converters and industrial power supplies. It delivers V_CE(sat) ≤ 0.4 V at I_C = 3 A, f_T = 120 MHz typ., and supports V_CEO = 80 V, I_C = 5 A continuous, with 20 W power dissipation at T_c = 25°C.

For engineers reviewing the 2SC3303-Y(T6L1,NQ) datasheet, 2SC3303-Y(T6L1,NQ) pinout, 2SC3303-Y(T6L1,NQ) application, or 2SC3303-Y(T6L1,NQ) equivalent, key selection criteria include saturation voltage under 3 A load, switching speed (t_stg = 1.0 μs typ.), h_FE classification Y (120–240), thermal performance in TO-220AB package, and RoHS-compliant marking per JEITA standard.

Technical Context

This transistor operates in common-emitter configuration with fixed-base drive, optimized for linear and saturated switching modes. Its PCT (Planar Collector Technology) structure enables low V_CE(sat) and high f_T, while the epitaxial base ensures stable h_FE across temperature (−55°C to 100°C).

The device exhibits defined safe operating area (SOA) limits up to 30 A pulsed (10 ms), with thermal resistance r_th(j-c) enabling 20 W dissipation at case temperature 25°C. Derating is required above 25°C per linear curve, and operation beyond SOA boundaries risks secondary breakdown.

Key Specifications

Pinout & Package

2SC3303-Y(T6L1,NQ) is housed in a TO-220AB plastic package (TOSHIBA designation 2-7J1A), with 3 leads, 0.36 g typical weight, and JEDEC-compliant outline. The package supports vertical mounting with insulated tab and is rated for T_j = 150°C max.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN power switching applications.

Compared with 2SC3303-O(T6L1,NQ) and MJD127G, the 2SC3303-Y(T6L1,NQ) provides superior h_FE consistency and lowest V_CE(sat), making it optimal for thermally constrained, high-efficiency linear or saturated switching where base drive stability and conduction loss are critical.

Availability

2SC3303-Y(T6L1,NQ) is available at Aetrix Electronics and suitable for industrial DC-DC converters, high-current relay drivers, and motor start circuits requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.

Supply support for 2SC3303-Y(T6L1,NQ) includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Toshiba Electronic Devices & Storage Corporation designs and manufactures discrete semiconductors, power devices, and logic ICs, with global manufacturing and quality systems certified to ISO 9001 and IATF 16949.

The 2SC3303 belongs to Toshiba's legacy high-current bipolar transistor family, engineered specifically for robust industrial switching applications where reliability under thermal stress and consistent gain behavior are essential.

FAQ

What is the h_FE classification for 2SC3303-Y(T6L1,NQ)?

The "Y" suffix in 2SC3303-Y(T6L1,NQ) denotes h_FE classification Y, specifying a DC current gain range of 120–240 measured at V_CE = 1 V and I_C = 1 A. This tighter binning improves predictability in base drive design compared to the O-class (70–140). The 2SC3303-Y(T6L1,NQ) maintains this gain range across −55°C to 100°C operating temperatures per Toshiba's published curves.

Does 2SC3303-Y(T6L1,NQ) support pulsed operation above 5 A?

Yes, 2SC3303-Y(T6L1,NQ) supports pulsed collector current up to 8 A (I_CP) with duty cycle ≤1%, as specified in its Absolute Maximum Ratings. Pulse operation must respect the Safe Operating Area (SOA) limits shown in Figure 4 of the datasheet - for example, 30 A is allowed for ≤10 ms only if V_CE remains ≤20 V. Exceeding SOA boundaries risks secondary breakdown.

What thermal derating applies to 2SC3303-Y(T6L1,NQ) above 25°C case temperature?

2SC3303-Y(T6L1,NQ) requires linear derating of collector power dissipation above T_c = 25°C, per the "Curves must be derated linearly with increase in temperature" note in Figure 4. At T_c = 75°C, maximum allowable P_C drops to approximately 10 W. Full derating data is provided in Toshiba's transient thermal resistance (r_th-t_w) chart, which shows 1.25°C/W junction-to-case resistance at DC operation.

Is 2SC3303-Y(T6L1,NQ) RoHS compliant?

Yes, 2SC3303-Y(T6L1,NQ) is RoHS compliant. Per Toshiba's marking convention, an underlined lot number on the device body indicates [[G]]/RoHS [[Pb]] compliance per EU Directive 2011/65/EU. Material declarations and test reports are available upon request from Toshiba or authorized distributors, and the 2SC3303-Y(T6L1,NQ) meets all six restricted substance thresholds.

Can 2SC3303-Y(T6L1,NQ) replace 2SC3303-O(T6L1,NQ) without circuit modification?

2SC3303-Y(T6L1,NQ) can physically replace 2SC3303-O(T6L1,NQ) in the same TO-220AB footprint, but circuit validation is required due to h_FE differences: Y-class (120–240) vs. O-class (70–140). Base drive resistance may need reduction to maintain sufficient I_B/I_C ratio at 3 A, especially at elevated temperature. Always verify V_CE(sat) and switching timing with the actual 2SC3303-Y(T6L1,NQ) in-system.