LZ644 is a high-precision narrow-width carrier tape developed for 3225 rectangular SMD resistors and capacitors. Generic 8mm carrier tapes often have oversized pockets, which allow small 3225 components to shake freely inside the cavity, leading to component tilting and empty pick faults on high-speed SMT machines.
We carefully calibrated the 2.72×3.45mm cavity to perfectly match the outline of 3225 chips, minimizing free space to lock components steadily in place. The 0.22mm thin new PC substrate maintains good flexibility without permanent curling after multi-layer reel winding. The 1.00° balanced demolding angle balances smooth mold stripping and pocket surface finish, lowering defect rates during continuous mass thermoforming. The new black conductive PC material delivers consistent surface resistance without surface coating shedding, fully protecting sensitive passive components from electrostatic damage during production and storage. All dimensional data strictly follows EIA-481 global carrier tape standards, fully compatible with all mainstream 8mm narrow-width taping and pick-and-place equipment.
Complete Technical Parameter Table
| Parameter Name | EIA-481 Tolerance (mm) | LZ644 Custom Value (mm) | Practical Industrial Benefits |
|---|---|---|---|
| W Tape Width | 8±0.10 | 8 | Universal 8mm narrow width fits all mini-component automated taping equipment worldwide |
| P1 Feed Hole Pitch | 4±0.10 | 4 | Standard 4mm sprocket pitch ensures smooth traction, no jumping or jamming during continuous high-speed operation |
| T Base Thickness | 0.22±0.02 | 0.22 | Thin flexible new PC resists winding deformation, keeps tape flat after long reel stacking |
| A0 Cavity Width | 2.72±0.05 | 2.72 | Narrow pocket width restricts lateral shift of slim 3225 rectangular components |
| B0 Cavity Length | 3.45±0.05 | 3.45 | Matched longitudinal length prevents front-back sliding of 3225 chips |
| K0 Cavity Depth | 1.00±0.05 | 1.00 | Shallow pocket keeps flat components close to tape surface, lowering empty pick rate |
| D1 Draft Angle | 1.00 | 1.00 | Balanced demolding angle reduces mold sticking and improves forming surface quality |
Core Competitive Advantages
- Tightly Sized Precision Pocket: Eliminates excessive internal clearance, stops 3225 components from shaking and flipping inside the cavity.
- Low-Temperature Flexible New PC: Better cold resistance than regular PC, no brittleness in cross-border cold-chain transportation.
- 0.22mm Thin Flexible Substrate: Lightweight tape reduces reel weight to cut logistics cost, no permanent curl after long winding.
- Integral Permanent ESD Protection: No surface coating wear, stable anti-static performance throughout the full component storage cycle.
- One-Stop Supporting Accessories: Matching cover tape and plastic reels available, fast revision for variant 3225 component sizes.
Application Scenarios
- 3225 (510) size SMD resistors, capacitors and other rectangular passive components
- High-speed 8mm narrow SMT production lines with strict low empty-pick requirements
- Passive component manufacturers with long-term mass export orders
Q&A Session
Q: Why design a tightly limited pocket for 3225 chips?
A: If the pocket is too large, flat 3225 components will flip randomly during reel winding. Our precisely sized cavity fits the component outline tightly, keeping the part horizontal and stable all the time.
Q: What’s the difference between new PC and ordinary PC material?
A: Ordinary PC easily becomes brittle in low-temperature sea shipments. Our new PC adds toughening modifiers, so the tape stays flexible and crack-free under cold storage and long-distance transportation.
