Description
With its compact structure, low thermal inertia, high mechanical strength, and strong resistance to acid and alkali corrosion, this silicon nitride igniter is ideal for continuous operation and high-frequency ignition cycles.
The product is supplied directly by a professional manufacturer and source factory, with full support for OEM customization, bulk production, and global wholesale distribution.

Electrical Performance Parameters
- Rated Voltage: 55V – 250V
- Frequency: 50 / 60 Hz
- Rated Power: 250W – 650W
- Insulation Electric Strength:
No breakdown at room temperature under 2500V, 50Hz for 1 minute
Performance Characteristics
- Hot-pressed silicon nitride ceramic substrate
- High-temperature mechanical strength
- Excellent thermal shock resistance
- Strong acid and alkali corrosion resistance
- Superior electrical insulation and dielectric stability
- High thermal conductivity for efficient heat transfer
- Compact size and robust structure
- Low thermal inertia for rapid heating response
- Designed for long-term industrial operation

Technical Specifications
| Parameter | Value |
|---|---|
| Flexural Strength (Room Temperature) | ≥ 900 MPa |
| Fracture Toughness | 6.0 – 8.0 MPa·m¹ᐟ² |
| Bulk Density | 3.20 – 3.40 g/cm³ |
| Volume Resistivity | ≥ 10¹⁴ Ω·cm |
| Relative Permittivity | 6 – 7 |
| Thermal Conductivity | 23 – 25 W/(m·K) |
| Thermal Expansion Coefficient | 3.1 × 10⁻⁶ /°C |
| Hardness | HRA 92 – 94 |
Mechanical Properties
- Hardness (HRA): 92.0 – 94.0
- Fracture Toughness: 6.0 – 8.0 MPa·m¹ᐟ²
- Flexural Strength: ≥ 900 MPa
Application Range
- Industrial ignition systems
- Combustion and burning apparatus
- Mold heating systems
- Packaging machinery
- Tobacco processing equipment
- Industrial equipment heating
- Petrochemical industry equipment
- Various high-temperature ignition devices

Use Cautions
- Rapid quenching and sudden heating cycles are strictly prohibited
- Do not splash water or other liquids onto the heating element at high temperatures
- Ensure proper installation and stable operating conditions
Frequently Asked Questions (FAQ)
Q1: Are you the manufacturer of the BLK-C7-SN-300 silicon nitride igniter?
Yes. We are a professional silicon nitride ceramic igniter manufacturer and source factory, specializing in hot-press Si₃N₄ heating elements for industrial applications.
Q2: Do you provide OEM or customized solutions?
Yes. We support OEM and ODM customization, including power, voltage, dimensions, mounting structure, and application-specific requirements.
Q3: Is this product suitable for wholesale and bulk orders?
Yes. We offer factory-direct wholesale supply, stable batch production, and long-term cooperation for distributors and equipment manufacturers.
Q4: What applications is the BLK-C7-SN-300 best suited for?
It is widely used in industrial ignition systems, molds, packaging machinery, petrochemical equipment, and other high-temperature heating applications.
Q5: Why choose a silicon nitride igniter instead of a metal heating element?
Silicon nitride igniters provide faster heating, higher temperature resistance, better insulation, corrosion resistance, and longer service life, making them more reliable in harsh industrial environments.




