The YiHi SX735J chipset is a high-performance control system designed for single-battery vaping devices (18650 / 20700 / 21700). It supports multiple output modes, advanced temperature control, and YiHi’s exclusive Pure Mode for improved flavor consistency and output stability.

This guide explains all SX735J settings, modes, and features in a clear way, including how to configure the device for the best performance.

What is the YiHi SX735J Chipset?

The YiHi SX735J is an advanced vaping chipset developed for precision power control and enhanced flavor delivery. It is commonly used in premium vape mods and supports both beginner-friendly wattage control and advanced customization features.

Key capabilities include:

  • Wattage adjustment (5–100W depending on device)
  • Temperature control (Ni200, SS316L, TCR)
  • Voltage mode output
  • YiHi Pure Mode for stable performance
  • SXi-EQ custom power curves

How to Turn On and Lock the Device

Power On / Off

To turn on the device, press the fire button 5 times quickly. The YiHi logo will appear, followed by the main interface.

To turn off the device:

  • Enter the main menu
  • Select System Off
  • Confirm shutdown

Lock / Unlock

Press the fire button 3 times to lock or unlock the device. This helps prevent accidental firing or misuse.

YiHi SX735J Modes Explained

Watt Mode (Power Mode)

Watt Mode allows you to manually adjust output power based on your coil and preference.

You can also select preset profiles such as:

  • Soft
  • Neutral
  • Strong
  • SXi-EQ custom curve modes

This mode is ideal for users who want simple power control and consistent output.

Temperature Control Mode (TC Mode)

Temperature Control Mode regulates coil temperature instead of raw wattage.

Supported materials:

  • Ni200
  • Stainless Steel (SS316L)
  • Custom TCR settings

Users can choose different thermal profiles such as:

  • Normal
  • Cool
  • Cold
  • Warm
  • Hot

This mode helps reduce dry hits and improves flavor consistency.

Voltage Mode (V.VOL Mode)

Voltage Mode delivers a fixed voltage output instead of wattage control. This is typically used by advanced users who prefer manual electrical control of their device.

Pure Mode (YiHi Exclusive Feature)

Pure Mode is a proprietary YiHi output algorithm designed to deliver a cleaner and more stable vaping experience.

It focuses on:

  • Smooth power delivery
  • Consistent flavor output
  • Reduced fluctuation during use

This mode is ideal for users who want a stable, balanced experience without manual tuning.

SXi-EQ Custom Curve Settings (Advanced Feature)

SXi-EQ allows users to customize power output over time in 0.5-second intervals.

You can adjust output levels from 50% to 200%, creating a personalized power curve.

Benefits include:

  • Enhanced flavor control
  • Better coil responsiveness
  • Customized vaping experience

This feature is recommended for advanced users.

Best YiHi SX735J Settings (Recommended Configurations)

For Beginners

  • Watt Mode: 20–40W (depending on coil)
  • Profile: Neutral or Soft
  • Pure Mode: Optional

For Flavor Focus

  • Watt Mode: 25–50W
  • Profile: Soft or SXi-EQ gradual ramp-up
  • Temperature Control: SS316L recommended

For Stronger Output

  • Watt Mode: 40–80W
  • Profile: Strong
  • SXi-EQ: aggressive curve setting

Device Features & Shortcuts

  • Resistance Lock: prompts to confirm new or old coil resistance
  • Brightness Control: adjustable from 10%–100%
  • Screen Timeout: 15–90 seconds
  • Temperature Unit Switch: °C / °F
  • Puff Counter: tracks daily and lifetime usage

Safety Protections

The YiHi SX735J chipset includes multiple safety protections:

  • Low Voltage Protection (<3.2V)
  • Short Circuit Protection
  • Low Resistance Protection (<0.1Ω cutoff)
  • Overcharge Protection (4.2V ±0.05V)
  • Reverse Polarity Protection

These systems ensure safe operation under normal and abnormal conditions.

Key Specifications

  • Input Voltage: 3.4V–4.2V
  • Power Output: 5–100W (device dependent)
  • Standby Current: <10μA
  • Display: 0.96" TFT (180×60 resolution)
  • Firmware Upgrade Support
  • Multi-language Support (8 languages)

Common Issues and Troubleshooting

Device not firing

Check if the device is locked or battery voltage is too low.

Atomizer not detected

Ensure coil is properly installed and resistance is within supported range.

Incorrect resistance reading

Use the resistance lock feature or reattach the atomizer.

Weak output

Check wattage settings or switch to a stronger profile mode.

Frequently Asked Questions (FAQ)

What is the YiHi SX735J chipset used for?

It is used to control power output, temperature, and performance in advanced vape devices.

Is YiHi SX735J good for beginners?

Yes, especially in Watt Mode, which is simple and easy to use.

What is Pure Mode on YiHi SX735J?

Pure Mode is a YiHi-exclusive feature that stabilizes output for smoother performance.

What is SXi-EQ?

SXi-EQ is a custom power curve system that allows users to fine-tune output over time.

Conclusion

The YiHi SX735J chipset offers a balance of simplicity and advanced customization. With multiple modes including Watt, Temperature Control, Voltage, and Pure Mode, users can tailor their vaping experience for flavor, power, or stability.

For more details about the YiHi SX735J chipset, visit the official YiHi SX735J product page.