---
type: "Technical Data Sheet"
title: "CMC 70330 – Technical Data Sheet"
description: "CMC 70330 is a self adhesive high temperature insulating tape with improved corona resistance in high voltage applications."
resource: "https://datasheets.cmc.de/pdf/cmc-70330-en.pdf"
tags: ["apical® polyimide film 110 cr", "ca. 0.028", "acrylic"]
language: "en"
product: "CMC 70330"
product_family: "cmc"
document_date: "2022-09"
status: "stable"
generated: { by: "process:cmc-datasheets/0.1.0", at: "2026-09-23T16:56:34Z" }
sources:
  - id: "pdf"
    resource: "https://datasheets.cmc.de/pdf/cmc-70330-en.pdf"
    title: "Technical Data Sheet CMC 70330"
    author: "CMC Klebetechnik GmbH"
    last_modified: "2022-09-26T13:16:06Z"
---

# CMC 70330 – Technical Data Sheet

[PDF data sheet (binding)](/pdf/cmc-70330-en.pdf)

Issued: 2022-09

## Product description

CMC 70330 is a self adhesive high temperature insulating tape with improved corona resistance in high voltage applications. Fillers in the film also provide higher thermal conductivity while maintaining good dielectric strength.

| Property | Value |
|---|---|
| Backing material | Apical® polyimide film 110 CR |
| Colour | light brown |
| Substrate thickness in mm | ca. 0.028 |
| Total thickness in mm | 0.058  15% |

## Adhesive Properties

| Property | Value |
|---|---|
| Type of adhesive | acrylic |
| Adhesive strength in N/cm according to internal method PV 1006-32 (180° peel from steel) | ≥2 |

## Thermal Properties

| Property | Value |
|---|---|
| Temperature performance (max.) in °C | 180 |
| Short term temperature performance in °C (ca. 1 hour) | 200 |
| Insulation class according to IEC 60085 | H |

## Electrical Properties

| Property | Value |
|---|---|
| Breakdown voltage based on IEC 60243-1 in Veff. | ≥ 5'000 |

## Mechanical Properties

| Property | Value |
|---|---|
| Tensile strength in N/cm | ≥ 30 |
| Elongation at break in % | ≥ 30 |

## Other Properties

® Registered trademark of Kaneka North America LLC

| Property | Value |
|---|---|
| recommended storage cond.: cool and dry (15 - 25°C, < 65% rel. humidity) | 09/22 |

---

*The technical data are average values and do not replace the user's own testing. Subject to change without notice. The PDF data sheet is binding.*