3M™ 851ST Circuit Board Plating Masking Tape
3M™ 851ST Circuit Board Plating Masking Tape

$2.00 – $59.00 / finished roll (USD)Custom widths available ($200 deposit credited)

Select options This product has multiple variants. The options may be chosen on the product page
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3M™ 851ST Circuit Board Plating Masking Tape
FAST DISPATCH 48 h dispatch Stocked finished rolls shipped worldwide
CNC TOLERANCE ±0.1 mm tolerance Class-1000 cleanroom CNC slitting
TRACEABILITY 3M™ lot traceable Factory batch COA with every shipment
Need 3M™ 851ST die-cut into a custom part?

We die-cut to your CAD drawing: shaped gaskets, FPC stiffeners, pull-tab liners, roll or sheet delivery with waste removed.

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01 Class-1000 cleanroom slitting · square edges, no adhesive squeeze-out
02 Individually sealed in anti-static PE bags with the factory lot number
03 Commercial invoice (CI), packing list (PL) and TDS included
3M™ GENUINE MASTER ROLL · SKU #851ST 3M™ Industrial Tape

3M™ 851ST Circuit Board Plating Masking Tape

3M™ 851ST Circuit Board Plating Masking Tape
THICKNESS · total0.100 mm4.0 mil
TEMP RANGE · continuousUp to 130°C (266°F) masking bath temperaturesContinuous service temperature
MASTER ROLL · max width1000 mmCustom slitting 1–1000 mm

$2.00 – $59.00 / finished roll (USD)Custom widths available ($200 deposit credited)

Thickness 0.100 mm (4.0 mil) · Temp. Up to 130°C (266°F) masking bath temperatures · 50 m per roll · Master width 1000 mm · PCB electroplating masking, solder stripping, high-chemical resistance masking
Roll length: 50 m / roll

Master roll engineering specs (TDS)

DOC-TDS-3M-851ST
Total thickness 0.100 mm (4.0 mil)
Max master width 1000 mm (CNC slitting 1–1000 mm)
Temperature range Up to 130°C (266°F) masking bath temperatures
Backing Translucent green polyester blend film
Adhesive Formulated silicone/rubber-blend masking adhesive
Typical applications PCB electroplating masking, solder stripping, high-chemical resistance masking
SKU: 3M-851ST-1000mm50M Category:

3M™ Circuit Board Plating Tape 851ST is a green polyester-backed masking tape engineered specifically for printed circuit board gold-finger electroplating and solder-stripping baths. Its adhesive formulation creates an impervious seal that prevents aggressive chemical bath undercutting, peeling away cleanly without adhesive transfer.

Key Performance Highlights

  • Conformable green polyester backing provides excellent chemical barrier against acidic plating baths
  • Specially formulated adhesive prevents plating bath undercutting and edge leakage
  • Removes cleanly from PCB traces without leaving adhesive ghosting or residue
  • Translucent green color allows precise visual alignment over critical contact fingers

Recommended Industrial Applications

Printed circuit board (PCB) gold finger plating masking, chemical bath protection, powder coating

Authoritative Technical Specifications

Backing Material Translucent green polyester blend film
Adhesive System Formulated silicone/rubber-blend masking adhesive
Total Thickness 0.100 mm (4.0 mil)
Operating Temperature Up to 130°C (266°F) masking bath temperatures
Visual Color / Appearance Green (Translucent Polyester)
Dielectric / Flame Rating Chemical plating barrier
Precision Converting Precision Rotary Slitting, Die-Cutting, Custom Widths from 2mm to Log Width

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