3M™ 1388B-1 Black Polyester Film Electrical Tape
3M™ 1388B-1 Black Polyester Film Electrical Tape

$2.00 – $42.50 / 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™ 1388B-1 Black Polyester Film Electrical 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
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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 #1388B-1 3M™ Industrial Tape

3M™ 1388B-1 Black Polyester Film Electrical Tape

3M™ 1388B-1 Black Polyester Film Electrical Tape
THICKNESS · total0.063 mm2.5 mil
TEMP RANGE · continuousUp to 130°C (266°F) · UL Class 130°CContinuous service temperature
MASTER ROLL · max width1219 mmCustom slitting 1–1219 mm

$2.00 – $42.50 / finished roll (USD)Custom widths available ($200 deposit credited)

Thickness 0.063 mm (2.5 mil) · Temp. Up to 130°C (266°F) · UL Class 130°C · 66 m per roll · Master width 1219 mm · Optical and decorative coil coverings, power supply black insulation
Roll length: 66 m / roll

Master roll engineering specs (TDS)

DOC-TDS-3M-1388B-1
Total thickness 0.063 mm (2.5 mil)
Max master width 1219 mm (CNC slitting 1–1219 mm)
Temperature range Up to 130°C (266°F) · UL Class 130°C
Backing 1.0 mil (0.025 mm) glossy black polyester film
Adhesive Acrylic pressure-sensitive adhesive
Typical applications Optical and decorative coil coverings, power supply black insulation
SKU: 3M-1388B-1-1219mm66M Category:

3M™ Black Polyester Film Electrical Tape 1388B-1 features a 1.0-mil glossy black polyester film backing coated with an acrylic adhesive. Engineered for applications requiring both Class 130°C electrical insulation and a sleek, premium glossy black cosmetic appearance in visible power adapters and consumer electronics.

Key Performance Highlights

  • High-gloss black polyester backing provides an immaculate, premium cosmetic finish
  • Non-corrosive acrylic adhesive prevents copper corrosion and edge flagging
  • Effective optical light barrier for light-sensitive sensors and power supplies
  • UL Recognized Class 130°C component for consumer electronic adapters

Recommended Industrial Applications

Aesthetic black outer wrap for transformers, power adapter coils, optical light blocking

Authoritative Technical Specifications

Backing Material 1.0 mil (0.025 mm) glossy black polyester film
Adhesive System Acrylic pressure-sensitive adhesive
Total Thickness 0.063 mm (2.5 mil)
Operating Temperature Up to 130°C (266°F) · UL Class 130°C
Visual Color / Appearance Glossy Black (1-mil Polyester)
Dielectric / Flame Rating UL Recognized, File E17385 · 5,000 Volts dielectric breakdown
Precision Converting Precision Rotary Slitting, Die-Cutting, Custom Widths from 2mm to Log Width

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