Sierra Electronics Leadertape Extenders (Covertape Extenders)
Sierra Electronics Leadertape Extenders give new life to partial reels with no usable leader, allowing your SMT feeder to pick the very first component at the correct pick position. Made in the USA using premium DuPont-grade adhesives, each extender provides a strong, stable cover layer that bonds cleanly to your existing carrier tape.
These extenders are compatible with all major pick-and-place platforms and deliver consistent indexing, smooth feeder engagement, and faster setup on short reels, re-runs, or high-mix production. Ideal for eliminating scrap starts, feeder mispicks, and downtime from leader-less reels.
“Pick from component one, every time.”
Chinese imports lack indicator lines, use inconsistent adhesive coating, and often misplace the adhesive zone—resulting in partial adhesion that fails under tension. Sierra’s precise application line guarantees full adhesive contact and exact placement every time.
Why Covertape Extenders Are Essential
Many partial reels arrive:
- Without a leader
- With too short of a leader
- With damaged or torn cover tape
Without a leader, the operator must sacrifice 10–50 components just to load the reel. Sierra’s Leadertape Extenders eliminate this waste by giving operators a perfect leader instantly, making every reel ready for immediate placement.
Where Chinese Counterfeit Leaders Fail
Import leader tapes commonly:
- Pop off after sitting on feeders overnight
- Fail under spring-tension loads from large feeder banks
- Delaminate when feeder peel-back engages
- Cause the first pick to misfeed or misindex
- Drop the first several components
- Waste expensive parts during shortages
- Create morning startup issues for operators
Some imported leaders hold overnight but fail the moment the machine starts, causing unexpected downtime and lost production time.
Sierra Electronics Leadertape Extenders completely eliminate these problems.
Why Sierra Electronics Leadertape Extenders Do Not Pop Off
Our extenders use:
- High-strength U.S.-formulated adhesive
- Full-contact coverage using the placement indicator line
- Tightly controlled film thickness
- Consistent, non-bubbling adhesive distribution
- Accurate bonding to all standard SMT carrier covertapes
The result is a leader that stays attached, regardless of reel diameter, feeder type, or tension level.
Step-by-Step Instructions: How to Use Sierra Electronics Leadertape Extenders
1. Prepare the Partial Reel
- Identify any partial reel that has no leader or an insufficient leader.
- Ensure the reel’s covertape is clean and free of oils or debris.
2. Expose the Adhesive Strip
- Take one Sierra Electronics Leadertape Extender.
- Remove the white liner to expose the full adhesive length.
The adhesive zone is uniform and ready for one-pass placement.
3. Use the Indicator Line for Perfect Placement
- Align the extender’s indicator line with the start of the reel’s existing covertape.
- Press the extender onto the covertape, ensuring full-length bonding.
The indicator line guarantees you apply the extender in the exact position needed to utilize the entire adhesive surface.
Chinese imports do not include an indicator, leading to partial adhesion, crooked placement, and pop-off failures.
4. Secure the Bond
- Press firmly along the entire extender to ensure uniform adhesion.
- Confirm the leader extends straight and tension-free.
5. Load the Reel Onto the Feeder
- Place the newly extended reel onto the SMT feeder.
- Feed the leader through the peel-back path as normal.
- Lock the feeder into position.
6. Pre-Load Feeders the Night Before
Most SMT lines pre-load feeders the night before a build to save morning startup time.
Available Lengths
- 18 inches (standard)
- 24 inches
- 36 inches
- 48 inches for legacy SMT systems
- Custom lengths available on request
Ideal For
- Automotive electronics assembly
- Aerospace and defense SMT lines
- Medical device manufacturing
- High-volume EMS factories
- Any SMT line facing component shortages
- Any line where reel waste is unacceptable
Leader Tape Extenders Standard Specifications
leader Tape Extenders Color Red
Leader Tape Extenders Color blue
Leader Tape Extenders Color black
Leader Tape Extenders Standard Videos
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