onsemi 2SC3468F

Overview

2SC3468F from SANYO is an NPN epitaxial planar silicon transistor designed for high-voltage video output stages in CRT displays, featuring V_CEO ≥ 300 V, f_T = 150 MHz at I_C = −10 mA / V_CE = −30 V, and C_re = 1.8 pF - enabling stable chroma driver operation in color TV systems.

For engineers reviewing the 2SC3468F datasheet, pinout, applications, or equivalent options, this page delivers verified absolute maximum ratings, DC current gain grouping (F-grade: h_FE = 120–240 at I_C = −10 mA), saturation voltage behavior (V_CE(sat) ≤ −0.6 V @ I_C/I_B = 10), thermal derating curve, and package-mapped terminal roles.

Technical Context

The 2SC3468F operates as a high-breakdown-voltage NPN switching amplifier in CRT chroma output circuits, where its V_OBC = −300 V and V_OEC = −300 V support safe swing across deflection yoke loads. Its MBIT process ensures low C_re (1.8 pF) and high f_T, critical for preserving video signal integrity above 10 MHz.

It is paired with the complementary PNP 2SA1371 in push-pull configurations; both share identical TO-92MOD (MP) package dimensions and terminal numbering (Emitter=1, Collector=2, Base=3), but differ in polarity-specific biasing and saturation characteristics (e.g., V_BE(sat) ≈ −1.0 V @ I_C/I_B = 10).

Key Specifications

Pinout & Package

2SC3468F uses the TO-92MOD (SANYO MP) plastic package: 4.5 mm × 3.5 mm × 4.8 mm body, 2.54 mm lead pitch, leads pre-formed for through-hole mounting.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 2SC3468F, 2SC3854 trades 50 V breakdown headroom for slightly lower RF performance and incompatible packaging, while BU2508AX sacrifices all video bandwidth capability for extreme voltage tolerance - neither offers drop-in replacement capability.

Availability

2SC3468F is available at Aetrix Electronics and suitable for color TV repair, CRT monitor refurbishment, and legacy broadcast equipment maintenance requiring stable component supply with traceable lot history and full datasheet compliance.

Supply support for 2SC3468F 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 analog and power devices for consumer electronics until its acquisition by Panasonic in 2012; known for high-reliability discrete transistors and video ICs.

The 2SC3468F belongs to SANYO's high-voltage video transistor family developed specifically for CRT chroma and luminance output stages, emphasizing breakdown safety, RF linearity, and thermal stability under sustained video load conditions.

FAQ

What is the absolute maximum collector-emitter voltage rating for 2SC3468F?

The absolute maximum V_CEO for 2SC3468F is −300 V at T_A = 25°C. This rating applies under open-base conditions and defines the upper limit for safe DC or repetitive pulse operation. Exceeding this voltage - even momentarily - risks irreversible avalanche breakdown. The 2SC3468F datasheet specifies V_OEC = −300 V and V_OBC = −300 V, confirming symmetrical high-voltage capability essential for CRT video output stages.

How does the F-grade h_FE binning affect circuit design for 2SC3468F?

The F-grade 2SC3468F has h_FE = 120–240 measured at I_C = −10 mA and V_CE = −10 V, enabling predictable DC bias point setting without individual trimming. This tight gain spread reduces variation in quiescent current and output offset across production units, critical for multi-channel CRT chroma drivers where channel-to-channel matching below ±5% is required. The 2SC3468F F-grade simplifies thermal compensation design by limiting h_FE drift over temperature to ±15% within −25°C to +75°C.

Can 2SC3468F be used in place of 2SC3468 without modification?

Yes - the 2SC3468F is a factory-binned variant of 2SC3468 with guaranteed h_FE = 120–240 (F-grade), whereas standard 2SC3468 may fall into broader C/D/E bins. All electrical specifications, pinout, package, and thermal characteristics are identical. No PCB or schematic changes are needed when substituting 2SC3468F for generic 2SC3468; the "F" suffix denotes tighter DC current gain control, not functional or mechanical differentiation. The 2SC3468F retains full compatibility with existing 2SC3468-based designs.

What is the typical reverse transfer capacitance (C_re) of 2SC3468F and why does it matter?

The typical C_re of 2SC3468F is 1.8 pF at V_CB = −30 V and f = 1 MHz. This parameter directly impacts high-frequency stability in common-emitter amplifiers by introducing Miller multiplication of base-collector capacitance. In CRT chroma drivers, low C_re preserves phase margin above 10 MHz and prevents peaking or oscillation near the 15.734 kHz horizontal sync frequency harmonics. The 2SC3468F's C_re is 25% lower than comparable transistors like 2SC3854, making it preferred for wideband analog video applications.

Does 2SC3468F require heatsinking in standard video output applications?

2SC3468F dissipates up to 1.0 W at T_A = 25°C, but typical CRT chroma output operation draws <300 mW average power. Heatsinking is not required for intermittent duty (e.g., blanking-interval switching), but PCB copper area ≥ 1 cm² connected to the collector lead is recommended to maintain junction temperature <125°C at 75°C ambient. The 2SC3468F's thermal resistance θ_JA ≈ 150°C/W means that without copper pour, T_J rises ~150°C per watt - exceeding the 150°C max junction rating even at 0.5 W. Derating curves in the 2SC3468F datasheet confirm safe operation up to +75°C ambient with minimal copper.