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LA78040 Pinout – TV, CRT Display Vertical Output IC – Sanyo

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This is one of the Display Vertical Output IC types.

Part Number: LA78040

Function: TV and CRT Display Vertical Output IC with Bus Control Support

Package: TO-220-7H Type

Manufacturer: Sanyo

See the preview image and the PDF file for more information.

Image

la78040-vertical-output

Description

The LA78040 is a vertical deflection output IC for high image quality TV and CRT displays that supports the use of a bus control system signal-processing IC. The sawtooth waveform from the bus control system signal-processing IC can directly drive the deflection yoke (including the DC component). Color TV vertical deflection system adjustment functions can be controlled over a bus system by connecting the LA78040 to a Sanyo LA768X series or LA769XX series bus control system signal-processing IC.

Key Architecture

  • Vertical deflection power amplifier
  • Direct yoke drive capability (including DC component)
  • Integrated pump-up (bootstrap) circuit
  • Thermal protection included

Core Features

  • Built-in pump-up circuit → improves output swing and efficiency
  • Capable of directly driving vertical deflection yoke
  • Compatible with bus-controlled video processors (e.g., LA76931)
  • Thermal shutdown protection for reliability
  • Supports high-quality CRT image performance

LA78040 Pinout

la78040-pinout

Function

1. Built-in pump-up circuit for low power dissipation.
2. Vertical output circuit.
3. Thermal protection circuit.

Maximum Ratings at Ta = 25°C

1. Pump-up block supply voltage (+B2 max) : 34 V
2. Output block supply voltage (+B6 max) : 70 V
3. Allowable power dissipation (Pd max) : 9 W
4. Deflection output current (I5 max) : -1.5 to +1.5 Ap-o
5. Thermal resistance (θj-c) : 3 °C /W
6. Operating temperature (Topr) : -20 to +85 °C
7. Storage temperature (Tstg) : -40 to +150 °C

LA78040 Application Circuit ( Single Power Supply )

la78040-circuit

Design Notes (Critical Points)

  • Heat sink is mandatory due to power dissipation
  • Pump-up capacitor value affects vertical amplitude
  • Ensure proper grounding to avoid vertical jitter
  • Yoke impedance must match IC capability
  • Thermal protection should not be triggered in normal operation

Advantages

  • High integration → fewer external components
  • Stable and precise vertical deflection
  • Compatible with digital bus-controlled systems
  • Built-in protection improves reliability

Typical Applications

  • CRT televisions
  • CRT monitors
  • Video display systems using analog deflection

Related / Compatible ICs

  • LA76931 (video/signal processor)
  • LA76810 / LA76818 series
  • TDA3653 / TDA8172 (alternative vertical output ICs)

LA78040 Datasheet

J6810 Datasheet PDF – 750V, 10A, Silicon NPN Transisor

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Part Number: J6810, FJAF6810

Function: 750V, NPN Triple Diffused Planar Silicon Transisor

Package: TO-3PF Type

Manufacturer: Fairchild Semiconductor

Image
J6810 datasheet

Description

The J6810 is a high-voltage silicon NPN power transistor designed for demanding switching applications, featuring a 750V collector-emitter rating and 10A collector current capability in a robust package. It offers high voltage tolerance, strong current handling, and reliable thermal performance suitable for pulse and inductive loads. This device is commonly used in horizontal deflection output stages of high-voltage color display systems and similar power switching circuits.

Features

1. High Collector-Base Breakdown Voltage : BVCBO= 1500V

2. High Switching Speed : tF(typ.) =0.1µs

3. For Color Monitor

Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage: Vcbo = 1500 V

2. Collector to Emitter Voltage: Vceo = 750 V

3. Emitter to Base Voltage: Vebo = 6 V

4. Collector Current: Ic = 10 A

5. Total Dissipation : Pc = 60 W

6. Junction Temperature: Tj = 150°C

7. Storage Temperature: Tsg = -55 ~ +150°C

J6810 Pinout

components

Design Notes

  • Ensure proper heat sink design due to high power dissipation
  • Use snubber networks to suppress voltage spikes in deflection circuits
  • Base drive circuitry must provide sufficient current for fast switching
  • Verify safe operating area (SOA) under high-voltage pulse conditions
  • Maintain proper insulation and creepage distances for high-voltage operation

J6810 Datasheet PDF Download

J6810 Datasheet, FJAF6810 Datasheet

How to Choose This Part

  • Select for applications requiring high voltage (≥750V) switching capability
  • Suitable for CRT deflection and flyback-based designs
  • Ideal where high current and pulse robustness are required
  • Consider thermal management and switching frequency requirements
  • Ensure compatibility with driver stage and load characteristics

Applications

  • CRT color display horizontal deflection output
  • High-voltage power switching
  • Flyback converter circuits
  • Industrial control systems
  • Pulse power electronics

Alternative / Equivalent Products

  • 2SC6810
  • BU508A
  • 2SC4927
  • D1555
  • BU2520AF

J6810 pdf

 

Other data sheets are available within the file: FJAF6810D, J6810D

J6910 Datasheet

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