3M Thermally Conductive Acrylic Interface Pad 5590H
- Compound Type:
- Acrylic-Based Pad
- Thermal Conductivity:
- 3 W/mK
- Electrical Conductivity:
- Non-Conductive
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Manufacturer: 3M Last updated: 2026-09-15
Where to buy
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3M Thermally Conductive Acrylic Interface Pad 5590H (Acrylic Pad/Non-Conductive/3 W/mK) Review
3M 5590H thermally conductive acrylic interface pad, 3 W/mK, non-conductive, non-silicone
3M's 5590H is a non-silicone, acrylic-polymer thermally conductive interface pad sold pre-cut into squares, rectangles and circles on Amazon and via 3M distributors, an alternative to silicone-based gap pads where silicone outgassing is a concern.
Overview
Unlike the silicone pads that dominate this category, 3M 5590H uses an acrylic polymer base, making it a distinct chemistry option for gap-filling between chips and heatsinks.
Specifications
Identity and form
| Brand | 3M |
|---|---|
| Model | 5590H |
| Compound Type | Acrylic-Based Pad (non-silicone thermally conductive acrylic polymer) |
|---|---|
| Thermal Conductivity | 3 W/mK |
| Electrical Conductivity | Insulating |
| Package Size | Die-cut shapes and rolls (e.g. 25.4 x 25.4 x 0.5mm squares, sold in packs) |
| Recommended Use | Mainstream CPU/GPU and general electronics gap filling |
| Reapplication Interval | No reapplication needed; self-adhesive one-time application |
| Safety Notes | Non-conductive acrylic pad; no special handling precautions required |
| Consistency | Firm, tacky acrylic polymer sheet |
| Paste Segment | Pad |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- General electronics gap filling
- Silicone-sensitive assemblies
Not for
- Applications needing conductivity above 3 W/mK
FAQs
What are the key specifications of the 3M Thermally Conductive Acrylic Interface Pad 5590H (Acrylic Pad/Non-Conductive/3 W/mK)?
The 3M Thermally Conductive Acrylic Interface Pad 5590H (Acrylic Pad/Non-Conductive/3 W/mK) is a thermal paste from 3M. Key specs: Form Pad, Compound Type Acrylic-Based Pad (non-silicone thermally conductive acrylic polymer), Thermal Conductivity 3, Electrical Conductivity Non-Conductive, Package Size Die-cut shapes and rolls (e.g. 25.4 x 25.4 x 0.5mm squares, sold in packs).
Will the 3M Thermally Conductive Acrylic Interface Pad 5590H (Acrylic Pad/Non-Conductive/3 W/mK) work with my current setup?
The 3M Thermally Conductive Acrylic Interface Pad 5590H (Acrylic Pad/Non-Conductive/3 W/mK) lists Thermal Conductivity is 3. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.
Who is the 3M Thermally Conductive Acrylic Interface Pad 5590H (Acrylic Pad/Non-Conductive/3 W/mK) best suited to?
It suits general electronics gap filling, silicone-sensitive assemblies.
What are the drawbacks of the 3M Thermally Conductive Acrylic Interface Pad 5590H (Acrylic Pad/Non-Conductive/3 W/mK)?
It is a poor fit for applications needing conductivity above 3 w/mk.
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