LZ617 is an exclusive 8mm carrier tape engineered for miniature SOT-23 small-signal transistors widely used in consumer electronics, wearable circuits and automotive small control boards. SOT-23 components feature ultra-thin delicate pins, which demand ultra-tight tolerance cavity and reliable all-round static protection. Unlike generic single-layer cavity carrier tapes on the market, LZ617 uses precisely calibrated stepped pocket size to perfectly lock the chip body and limit pin swing, drastically reducing pin scrap rate caused by component offset and collision.
The upgraded new conductive PC material improves low-temperature toughness, resisting brittleness under cold cross-border transportation and cold warehouse storage, while integral conductive modification maintains consistent 10⁶~10⁹Ω/sq surface resistance without surface coating shedding risk. The lightweight 0.20mm thin base offers excellent flexibility for multi-layer reel winding without permanent curling deformation, fully matching continuous 24-hour high-speed taping production lines of semiconductor manufacturers. All dimensional data strictly complies with global EIA-481 carrier tape industry specifications, compatible with all mainstream imported and domestic 8mm taping & pick-and-place machines.
Complete Technical Parameter Table
| Parameter Name | EIA-481 Standard Tolerance (mm) | LZ617 Custom Value (mm) | Practical Production Advantages |
|---|---|---|---|
| W Tape Width | 8±0.10 | 8 | Universal 8mm narrow width fits all global mini component automated taping equipment, zero equipment modification cost |
| P1 Feed Hole Pitch | 4±0.10 | 4 | Standard 4mm sprocket pitch delivers smooth stable traction, eliminates skip-hole and tape jam during non-stop mass production |
| T Base Thickness | 0.20±0.02 | 0.20 | Ultra-thin flexible substrate avoids hard curling after thousands of winding layers, ideal for small mini chip reels |
| A0 Cavity Width | 3.15±0.05 | 3.15 | Wide upper pocket restricts lateral movement of SOT-23 chip body |
| B0 Cavity Length | 2.77±0.05 | 2.77 | Matched longitudinal outline of SOT-23 transistor, prevents front-back sliding |
| K0 Cavity Depth | 1.22±0.05 | 1.22 | Moderate pocket depth matches chip thickness, ensures stable suction nozzle contact to lower empty pick rate |
| D1 Draft Angle | 1.00 | 1.00 | Balanced demolding angle reduces mold sticking rate and enables effortless chip ejection at SMT station |
Core Competitive Strengths
- SOT-23 Exclusive Stepped Precision Cavity: Dual-size pocket design tightly wraps tiny transistors, effectively protecting fragile fine pins from bending and scratching.
- Low-Temperature Resistant New Conductive PC Formula: Outperforms regular PC tape in cold resistance, suitable for long-distance sea freight and low-temperature storage of semiconductors.
- 0.20mm Flexible Thin Base: Lightweight flexible substrate reduces overall reel weight to cut logistics cost for bulk shipments, no permanent winding curl.
- Integral Permanent Anti-Static Performance: Conductive agent mixed evenly inside raw material, no coating wear, full-cycle ESD protection for sensitive miniature transistors.
- One-Stop Supporting Packaging Accessories: Matching anti-static cover tape and standard plastic reels supplied together, rapid custom mold adjustment for special variant SOT-23 chips.
Application Scenarios
- SOT-23 packaged small signal transistors, switching diodes for consumer electronics, smart wearables, automotive miniature control modules
- Semiconductor packaging factories with high-precision mini chip SMT mass production lines
- Electronic manufacturers requiring long-term cold storage and cross-border export of tiny discrete semiconductors
Q&A Session
Q: What makes LZ617 stepped cavity better than ordinary single pocket tape for SOT-23 components?
A: Generic carrier tape adopts uniform pocket width, leaving large internal clearance for tiny SOT-23 chips, which causes the transistor to shift freely and bend thin pins during transportation. LZ617’s stepped dual-size pocket fits the chip’s irregular outline precisely, limiting component movement to minimize pin damage defects.
Q: Why choose new conductive PC material instead of standard conductive PC tape for SOT-23 packaging?
A: Regular conductive PC becomes brittle and prone to cracking under low-temperature environments during international shipping. Our upgraded new PC formula adds toughening modifiers to maintain flexibility at low temperatures, while retaining stable anti-static performance to guard sensitive SOT-23 semiconductors.
