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Toshiba Semiconductor User Manual

Toshiba Semiconductor
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[6] Handling Guide
93
[ 6 ] Handling Guide
1. Using Toshiba Semiconductors Safely
TOSHIBA is continually working to improve the quality and reliability of its products.
Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical
sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing
TOSHIBA products, to comply with the standards of safety in making a safe design for the entire
system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could
cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating
ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the
precautions and conditions set forth in the “Handling Guide for Semiconductor Devices,” or
“TOSHIBA Semiconductor Reliability Handbook” etc..
The TOSHIBA products listed in this document are intended for usage in general electronics
applications (computer, personal equipment, office equipment, measuring equipment, industrial
robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for
usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or
failure of which may cause loss of human life or bodily injury (“Unintended Usage”). Unintended
Usage include atomic energy control instruments, airplane or spaceship instruments, transportation
instruments, traffic signal instruments, combustion control instruments, medical instruments, all
types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be
made at the customers own risk.
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Toshiba Semiconductor Specifications

General IconGeneral
BrandToshiba
ModelSemiconductor
CategorySemiconductors
LanguageEnglish

Summary

Using Toshiba Semiconductors Safely

Safety Precautions

General Precautions regarding Semiconductor Devices

General safety precautions for handling semiconductor devices.

General Safety Precautions and Usage Considerations

From Incoming to Shipping

Precautions from receiving devices to shipping them.

Electrostatic Discharge (ESD)

Protecting devices from electrostatic discharge during handling.

Vibration, Impact and Stress

Handling devices carefully to prevent damage from vibration, impact, and stress.

Storage

Guidelines for proper storage of semiconductor devices.

General Storage

General recommendations for storing devices to prevent degradation.

Design

Absolute Maximum Ratings

Understanding and adhering to absolute maximum ratings for device safety.

Recommended Operating Conditions

Operating conditions necessary to guarantee device performance.

Derating

Minimizing thermal stress by reducing rated maximum voltage, current, and temperature.

Input processing

Handling input signals for CMOS ICs to prevent malfunctions.

Inputs to a Printed Circuit Board

Connecting inputs to a printed circuit board to avoid electrical floating.

Power Source Design

Designing power sources for CMOS ICs to ensure stable operation.

Effect of Slow Rise and Fall Time on Input

Managing input signal rise and fall times to prevent oscillations and breakdown.

Output Short-Circuit

Preventing damage from output short circuits in C2MOSTM ICs.

Capacitors Connected to Signal Line or Vcc/GND

Correctly connecting capacitors to signal lines or power/ground.

Wiring Precautions

Precautions for wiring to prevent waveform distortion and noise.

Latch-up

Understanding and preventing latch-up conditions in CMOS devices.

Electrical Discharge and Precautions against Noise

Handling electrical discharge and protecting devices from noise.

Meta-Stable Characteristics

Understanding and solving meta-stability issues in flip-flops.

Thermal Design

Designing for thermal management to ensure device reliability and longevity.

Interfacing

Matching input/output voltages and handling supply voltage differences.

External Noise

Protecting circuit boards from induced noise and surges.

Electromagnetic Interference

Understanding and mitigating electromagnetic interference (EMI) effects.

Peripheral Circuits

Matching input/output voltages and considering drive capability.

Safety Standards

Adhering to country-specific safety standards for device insulation and quality.

Other Precautions

General precautions including fail-safe design and avoiding conductive objects.

Inspection, Testing and Evaluation

Procedures for inspecting, testing, and evaluating semiconductor devices.

Grounding

Importance of grounding measuring instruments, jigs, and soldering irons.

Inspection Sequence

Steps to follow during inspection and testing, including orientation and power.

Mounting

Methods and precautions for mounting semiconductor devices on PCBs.

Lead Forming

Proper techniques for forming device leads to prevent stress and damage.

Socket Mounting

Precautions for using sockets when mounting devices.

Soldering Temperature Profile

Recommended temperature profiles for soldering using irons and reflow methods.

Flux Cleaning and Ultrasonic Cleaning

Procedures and precautions for cleaning circuit boards after flux.

No Cleaning

When cleaning is not required for devices with low halogen flux.

Circuit Board Coating

Considerations for coating circuit boards for protection in extreme environments.

Protecting Devices in the Field

Methods to protect semiconductor devices from environmental factors.

Temperature

Understanding temperature effects on device characteristics and reliability.

Humidity

Managing humidity levels to prevent degradation and ESD.

Corrosive Gases

Protecting devices from degradation caused by corrosive gases.

Radioactive and Cosmic Rays

Shielding requirements for devices in radioactive environments.

Strong Electrical and Magnetic Fields

Protecting devices from strong electrical and magnetic fields.

Dust and Oil

Avoiding dusty or oily environments to prevent device degradation.

Fire

Safety precautions regarding combustible semiconductor devices.

Disposal of Devices and Packing Materials

Procedures for environmentally responsible disposal of devices and materials.