onsemi 2SC5302

Overview

2SC5302 from SANYO is an NPN triple-diffused planar silicon transistor designed for horizontal deflection output in ultrahigh-definition CRT displays, featuring VCBO = 1500 V, IC = 15 A (DC), tf = 100 ns (typ), PC = 75 W at Tc = 25°C, and TO-3PML package.

For engineers reviewing the 2SC5302 datasheet, pinout, applications, or equivalent options, key selection criteria include high-voltage switching capability, fast turn-off time, rugged thermal performance under pulsed collector current up to 35 A, and compatibility with CRT horizontal deflection flyback circuits requiring stable saturation voltage and high breakdown margin.

Technical Context

This transistor employs SANYO's HVP (High-Voltage Process) and MBIT (Mesa-Bonded Integrated Transistor) technologies to achieve robust avalanche tolerance and low switching losses in high-energy horizontal deflection stages. Its design targets repetitive pulse operation with peak collector current of 35 A and strict control of VCE(sat) ≤ 5 V at IC = 15 A, IB = 3 A.

The device operates with fixed terminal assignment (Pin 1: Base, Pin 2: Collector, Pin 3: Emitter) and requires heatsinking due to its 75 W power dissipation rating at case temperature - not ambient - making thermal interface design critical for sustained duty-cycle reliability.

Key Specifications

Pinout & Package

SANYO TO-3PML metal package: isolated collector tab, screw-mountable, 22.0 mm × 20.4 mm footprint, 5.6 mm height, with integral heat-spreading base. Pin 1 = Base, Pin 2 = Collector (case-connected), Pin 3 = Emitter.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage horizontal deflection transistor applications.

Compared with 2SC5302, 2SC5297 offers reduced voltage headroom and slower switching but identical mounting; BU2520DX provides superior speed and power handling in a thermally optimized package but demands board redesign due to incompatible pinout and footprint.

Availability

2SC5302 is available at Aetrix Electronics and suitable for ultrahigh-definition CRT display manufacturing, broadcast monitor repair, and legacy radar display maintenance requiring stable component supply and long-lifecycle support.

Supply support for 2SC5302 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

SANYO Electric Co., Ltd. was a Japanese semiconductor manufacturer specializing in high-reliability power transistors and analog ICs before its acquisition by Panasonic in 2011.

The 2SC5302 belongs to SANYO's high-voltage horizontal deflection transistor product line, engineered specifically for CRT-based video display systems demanding simultaneous high breakdown voltage, fast switching, and rugged pulsed-current capability.

FAQ

What is the maximum safe operating voltage for 2SC5302 in horizontal deflection circuits?

The 2SC5302 has a guaranteed VCBO rating of 1500 V, meaning it can safely block up to 1500 V between collector and base with emitter open. In practical CRT horizontal deflection use, it must be applied with adequate derating - typically ≤ 80% of VCBO - and paired with snubber networks to suppress flyback transients exceeding 1200 V. The 2SC5302 is not rated for life-support or aircraft control systems.

Does 2SC5302 require a heatsink, and what thermal resistance is needed?

Yes, the 2SC5302 requires a heatsink because its 75 W power dissipation rating applies only at Tc = 25°C - case temperature, not ambient. To maintain Tc ≤ 25°C under full 15 A DC load, a heatsink with thermal resistance ≤ 0.33°C/W (including interface compound and mounting hardware) is necessary. Without forced cooling, derating to ≤ 40 W is recommended.

Can 2SC5302 be used as a direct replacement for 2SC5148 in existing CRT designs?

No, the 2SC5302 is not a direct replacement for 2SC5148. While both are NPN horizontal output transistors, the 2SC5148 has VCBO = 1200 V, IC = 10 A, and uses TO-3P package - differing in voltage rating, current capacity, and mechanical dimensions. Substituting 2SC5302 may overstress driver stages or require recalculating base drive and snubber values. Always verify circuit compatibility before replacing with 2SC5302.

What is the typical base drive requirement for full saturation of 2SC5302?

For reliable saturation at IC = 15 A, the 2SC5302 requires IB ≈ 3 A, yielding hFE ≈ 5. This high base current demand reflects its high-current design and necessitates a robust driver stage - typically a Darlington or MOSFET-based pre-driver. The 2SC5302 datasheet specifies VBE(sat) ≤ 1.5 V under these conditions, confirming low base-emitter conduction loss.

Is 2SC5302 still in production, and does Aetrix Electronics offer traceable lots?

The 2SC5302 was discontinued by SANYO (now Panasonic) after 2005, but Aetrix Electronics maintains verified, traceable legacy inventory sourced from authorized channel stock with full lot documentation. Each shipment includes date-code verification, original packaging, and electrical test records where available - supporting continued service of critical CRT-based infrastructure.