This dual bridge wire igniter serves as a critical pyrotechnic initiator for automotive air bag restraint systems. Three variants (B Type, No.2, No.7) are offered with differentiated bridge wire resistance, wire gauge and lead length options. All units pass strict vibration, electrostatic, high low temperature validation and are RoHS compliant. Customization on lead length and wire colour is supported for automotive grade application requirements
Available Product Models
Item
B-Type Igniter
No.2 Electric Igniter
No.7 Electric Igniter
Image
Bridge‑wire Resistance
Dual‑bridge‑wire, resistance manufactured per order
Dual‑bridge‑wire, 3.5‑4.2 Ω
Dual‑bridge‑wire, 1.9‑2.9 Ω
Wire Specification
0.35 mm², 19‑strand tinned copper wire
0.5 mm², 7‑strand tinned copper wire
0.75 mm², 7‑strand tinned copper wire
Wire Standard
QC/T 730‑2005, temperature class QB‑D
QC/T 730‑2005, temperature class QB‑D
QC/T 730‑2005, temperature class QB‑D
Default Wire Color
Red‑Blue
Yellow‑Blue (customizable per order)
Red‑Blue (customizable per order)
Default Lead Length (Dimension A)
250±2 mm; 20 mm stripping at end, stripping length 7 mm
185±2 mm
248±2 mm
Safe Current
250 mA / 5 min, no ignition of pyrotechnic head
200 mA / 5 min, no ignition of pyrotechnic head
220 mA / 5 min, no ignition of pyrotechnic head
Reliable Firing Current
800 mA / 100 ms for reliable ignition
800 mA / 100 ms for reliable ignition
800 mA / 100 ms for reliable ignition
General Technical Requirements
1.
Order Quantity:Each batch of the same model shall be no less than 20,000 units.
2.
Vibration Resistance: Test on a vibration tester complying with WJ231. Continuous vibration for 10 min at 1 Hz frequency and drop height of (150±2) mm. No unintended activation, structural damage, or resistance change greater than 0.2 Ω is allowed.
3.
Electrostatic Sensitivity: Discharge across the two leads under conditions: capacitor (500±25) pF, series resistor (5000±250) Ω, charging voltage (25000±500) V. No unintended activation shall occur during test.
4.
High‑Temperature Resistance: Expose bare product at (55±2) ℃ for 4 h. No unintended activation, melting, adhesion or cracking on surface during test. Immediately apply 1.0 A DC current for 50 ms after removal from environment; the igniter shall activate reliably and burn completely.
5.
Low‑Temperature Resistance: Expose bare product at (-20±2) ℃ for 4 h. No surface cracking or fracture. Immediately apply 1.0 A DC current for 50 ms after removal from environment; the igniter shall activate reliably and burn completely.
6.
Delivery Appearance & Packaging: The surface of electric igniter shall be clean. Defects such as incomplete plastic plug injection, damage, blowholes, inclusions, exposed core wire insulation, corroded conductors and uneven end faces are not permitted. Products shall be delivered in blister packs.
7.
Compliance: RoHS compliant.
Key Performance Characteristics
Dual bridge wire construction for enhanced firing stability and redundancy
Defined safe current and reliable firing current to prevent mis fire or non fire
Validated against vibration, ESD, high temperature and low temperature conditions for automotive in vehicle environment
Automotive‑grade wiring complying with QC/T 730‑2005
Application Scope
Designed for automotive safety restraint systems, mainly used for air‑bag inflator initiation. Suited for automotive component Tier‑1 procurement projects with custom wiring and dimensional requirements.
Customization & Order
Instructions
Lead length and wire colour can be adjusted according to customer drawing or order requirements
Minimum batch quantity: 20 000 units per model
All performance parameters follow above?listed general technical requirements unless otherwise agreed in writing
Contact us for your relevant requirements.
Contact AURAN to review blaster technical specifications, application matching, documentation and OEM requirements
