Skip to main content Skip to navigation

Call us at 1-888-826-6342

Call us at 1-888-826-6342.

Self-Adhesive Polyimide Fast Response Surface Thermocouples - High Temp

Self-Adhesive Thermocouples


Item# SA3-K-120

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 $45.35
10-24 $43.08
25-99 $40.82
100-499 $38.55
500-999 $36.28
1000+ $34.01

In stock

Lead Time (If not in stock): 7 weeks
Self-Adhesive Thermocouples SA3-K-120 SA3-K-120
  • Polyimide Carrier
  • Self-Adhesive Backing
  • Low Mass Junction Area for Fast Response
  • Resistant to many Chemicals and Oils

SA3-K-120 Model Options

View all models

Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

Thermocouple Type
Process Temperature Range
Termination Connection Type
Cable Length
Color Code Standard
Minimum Temperature Measurement
Sensor Application
Cable Insulation
Probe Diameter

These thermocouples can be used in outdoor and wet environments, including bright sunlight, with little to no effect on performance or accuracy. Our unique construction techniques provides a fast responding thermocouple junction in a thin and flexible mounting pad. These SA3 thermocouples are available in 2 styles, stripped #30AWG solid leads, or with a miniature color coded connector.

Thermocouple: ANSI color code J/K/T/E or IEC color code JI/KI/TI/EI
Accuracy: Special limits of error
Junction Type: Ungrounded sensor construction
     Polyimide tape base with silicone adhesive and paper peel sheet
     Polyimide tape cover
     PFA insulated and jacketed 30 AWG cable
     Glass filled nylon connector when specified
Temperature Range:
    Sensor: -17 to 260°C (0 to 500°F)
    Connector: -29 to 180°C (-20 to 356°F)
Insulation Resistance: 100 M? minimum at 100 Vdc at room temperature and sensor mounted to surface
loading all models
loading all reviews
Rated 1 out of 5 by from fragile, thin wire and insulation, not robust Fragile, thin wire and insulation, not robust. One wire broke after first use.
Date published: 2020-05-21
Rated 1 out of 5 by from adhesive did not stick to stainless steel poor adhesive. Did not stick to cleaned stainless steel surfaces. Had to apply anothe layer of fiberglass high heat tape to get them to stay in place.
Date published: 2020-12-02
Rated 5 out of 5 by from Self-adhesive thermocouples This tc serves its purpose well! Easy to install but you have to be very careful not to damage it.
Date published: 2020-09-05
Rated 1 out of 5 by from False advertisement - very disappointed Even now you picture shows a thermocouple with a yellow connector at the end. I ordered the parts thinking that it was connectorized, but received the TCs with bare wire. Very disappointed in Omega.
Date published: 2020-08-24
Rated 5 out of 5 by from Love This Product! Works like a Charm! Need to attach these to a wax surface to go through an investment casting process and study how long the molds take to dry. These self adhesives work fantastic to stick to the mold and I would recommend.
Date published: 2023-06-04
Rated 4 out of 5 by from Lab Test Works good in lab test and connects to equipment well.
Date published: 2023-05-22
Rated 2 out of 5 by from Super fragile - BE CAREFUL Yes they're conveniently sized and when they work they work well. I ordered 3 (because I needed 3). One of them broke in the adhesive/PI sandwich section. The actual sensor wire broke off where the insulated wire began. This boggled my mind because that joint is contained within the adhesive section and is effectively strain relieved - that's how weak that joint is. Ordering some new thermocouples to try out.
Date published: 2023-01-04
Rated 5 out of 5 by from Improved design Good adhesive, seems better than the older style of these which I used to use, and the more rectangular size seems to work nicer as well instead of the old design which was more square-ish.
Date published: 2022-10-21
  • y_2023, m_9, d_28, h_3
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.35
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_10
  • loc_en_US, sid_SA3-K-120, prod, sort_[SortEntry(order=HELPFULNESS, direction=DESCENDING), SortEntry(order=POSITIVE_FEEDBACK, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_omega
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 4ms
loading all QA

In the product details, there is a column called "Minimum Temperature Measurement". The result is in inches.....specifically 36in for the device I ordered. What does that mean?

Asked by: Korpz
Thank You for your question. That is a website error. The length in inches describes the length of the wire being used in for that part in accordance to that part number. I will submit a ticket in order to have that category title fixed.
Answered by: AEMO
Date published: 2022-10-21

are these well insulated electrically, what if these are pasted on high voltage copper bus bars with voltage up to 500V to 1000V are there any other products that for surface mount application that can be used on copper bsubar with 1000V on it.

Asked by: Amit
Hi Amit, The adhesive pad is electrically insulative but we do not provide a voltage rating. If applied to a surface with potential the leads should be considered to be at the same potential. Best regards OMEGA
Answered by: AENwlk
Date published: 2020-11-13

1. what is the accuracy of SA3-J-SRTC? 2. what is the response time of SA3-J-SRTC? 2 seconds or 0.3 seconds? Thank you

Asked by: Validation guy
Surface Thermocouple achieves response times of less than 0.15 seconds.
Answered by: NJENG
Date published: 2020-03-17

I want to measure the metal tube surface temperature inside a tube in shell heat exchanger (undergraduate lab). The environment would be steam/water up to about 120 degrees C. Will the SA3 thermocouples function in this environment? Other suggestions?

Asked by: Rolf
Thank you for your inquiry Rolf. This probe works on wet environments that don't include the full water immersion and powerful water jets.
Answered by: Application Engineer MC
Date published: 2022-11-14

Can you get this item already attached to a connector for high temperatures?

Asked by: cyto
This would need to be handled by contacting the Temperature Engineering group directly at
Answered by: Applications Engineer AB
Date published: 2021-06-28

Are these thermocouples applicable in Vacuum environment (5torr- 10torr) pressure? at around 200 deg.

Asked by: Anirudh
Thank you for your inquiry. These sensors are NOT vacuum rated.
Answered by: Application Engineer CB
Date published: 2021-06-10

What is the accuracy of these SA3-J-120-SRTC?

Asked by: Linnie
Thank you for engaging with OMEGA. The accuracy of the SA3-J is greater of +/- 2.2°C or 0.75%
Answered by: AEMO
Date published: 2020-04-23

Is this thermocouple compatible with RDXL6SD-USB Temperature data logger? Also, can these thermocouples be reused?

Asked by: Ajit
Thank you for your inquiry. Yes, SA3-K-120-SRTC thermocouple is compatible with RDXL6SD-USB Temperature data logger. Yes, these can be reused as long as the adhesive is present.
Answered by: Application Engineer SP
Date published: 2023-02-26
  • y_2023, m_9, d_28, h_3CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.35
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_10
  • loc_en_US, sid_SA3-K-120, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_omega
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getContent, 30ms
Save Configuration