5501-24-1

**COTO CLASSIC™ 5500 SERIES HIGH VOLTAGE REED RELAYS** 

## **1 Description** 

The 5500 High Voltage Reed Relays set the industry standard for applications demanding high reliability. The potting technology employed to encapsulate these relays ensures the highest electrical insulation available in the industry. The 5500 series offers a switching power of up to 200 W, switching voltage up to 7.5 kV, breaking voltage up to 10 kV, and even higher dielectric strength. 

In alignment with our commitment to quality, this relay undergoes rigorous 100% testing, including a 100% high voltage test. The 5500 reed relay series can be customized with a different pin layout and package form upon request. 

## **Device Packages** 

## **2 Features** 

- u High voltage switching up to 7500 V 

- u High dielectric strength (up to 10000 V) 

- u High contact rating up to 200 Watts 

- u Custom lead terminations and packages available upon request 

- u Potting technology to minimize internal component stress u Magnetic shield 

- u High reliability, hermetically sealed contacts for long life 

- u High speed switching compared to electromechanical relays u RoHS compliant 

## **3 Applications** 

- u Medical 

- u Solar Systems 

- u Battery Management 

- u EV/Automotive 

- u Hipot Instrumentation 

- u Automated Test Equipment 

- u Process Control 

## **4 Dimensions** 

In Inches (Millimeters) 

**==> picture [340 x 231] intentionally omitted <==**

**----- Start of picture text -----**<br>
TOP VIEW<br>4 1 4 1<br>+<br>3 2 3 2<br>Schematic Form A, 5501/5503 Schematic Form B, 5502/5504<br>2.800 .710<br>(71.12) (18.03)<br>FO Try<br>.033 DIA.<br>.065 .750<br>(0.84)<br>(1.65) (19.05)<br>.700 .200<br>(17.78) (5.08)<br>.200<br>1.000<br>(5.08)<br>(25.4)<br>.355<br>.700<br>(9.02)<br>(17.78)<br>**----- End of picture text -----**<br>


## **5 Ordering Information** 

**Part Number 55XX XX-1** e **Model Number** ~~e e~~ **Coil Voltage** e 5501    5502 05=5 volts 5503    5504 12=12 volts 24=24 volts 

Copyright 2025. All rights reserved.  |  rev.04072025  |  page 1 

**www.cototechnology.com** 

**COTO CLASSIC™ 5500 SERIES HIGH VOLTAGE REED RELAYS** 

## **6 Parameters - Model Number 5500** 

|**Parameters**<br>**Test Conditions**<br>**Units**<br>**5501**<br>**55023**<br>**5503**<br>**55043**<br>**Relay Configuration**<br>**1 Form A**<br>High Voltage<br>Isolation<br>**1 Form B**<br>High Voltage<br>Isolation<br>**1 Form A**<br>Load<br>Switching<br>**1 Form B**<br>Load<br>Switching<br>**Coil Specifications1**<br>Nom. Coil Voltage<br>VDC<br>5.0<br>12.0<br>24.0|**Parameters**<br>**Test Conditions**<br>**Units**<br>**5501**<br>**55023**<br>**5503**<br>**55043**<br>**Relay Configuration**<br>**1 Form A**<br>High Voltage<br>Isolation<br>**1 Form B**<br>High Voltage<br>Isolation<br>**1 Form A**<br>Load<br>Switching<br>**1 Form B**<br>Load<br>Switching<br>**Coil Specifications1**<br>Nom. Coil Voltage<br>VDC<br>5.0<br>12.0<br>24.0|
|---|---|
|Max. Coil Voltage<br>VDC<br>6.5<br>15.0<br>30.0||
|Coil Resistance<br>+/- 10%, 25ºC<br>Ω<br>40<br>175<br>575||
|Operate Voltage<br>Must Operate By<br>VDC - Max.<br>3.75<br>9.0<br>18.0||
|Release Voltage<br>Must Release By<br>VDC - Min.<br>0.5<br>1.0<br>2.0||
|**Contact Ratings**<br>Switching Voltage<br>Max DC/Peak AC Resist.<br>Volts<br>7500<br>3500||
|Switching Current<br>Max DC/Peak AC Resist.<br>Amps<br>3.0|3.0|
|Carry Current<br>Max DC/Peak AC Resist.<br>Amps<br>5.0|5.0|
|Contact Rating<br>Max DC/Peak AC Resist.<br>Watts<br>50|200|
|Life Expectancy - Typical2<br>Signal Level 1.0V, 10mA<br>x 106Ops.<br>100|100|
|Static Contact Resistance (Max. Init.)<br>50mV, 10mA<br>Ω<br>0.080|0.200|
|**Relay Specifications**<br>Insulation Resistance (Min.)<br>Between all Isolated Pins at<br>100V, 25ºC, 40% RH<br>Ω<br>1010||
|Capacitance - Typical<br>Across Open Contacts<br>pF<br>1.5||
|Dielectric Strength (Min.)<br>Across Open Contacts<br>Contacts to Coil<br>VDC/peak AC<br>VDC/peak AC<br>10000<br>10000|7500<br>10000|
|Operate Time -<br>IncludingBounce - Typical<br>At Nominal Coil Voltage,<br>30Hz, Square Wave<br>msec.<br>3.0||
|Release Time - Typical<br>msec.<br>3.0||



## **General Notes:** 

1. Nom. Coil Voltages 5V, 12V, 24V are applicable for all relay models. 

2. Consult factory for life expectancy at other switching loads. 

3. Models 5502 and 5504 contain a bias magnet and are susceptible to magnetic interaction. Correct coil polarity must be observed where Pin #2 is positive (+) and Pin #3 is negative (-). 

4. All 5500 series contain an internal magnetic shield. 

## **Environmental Ratings:** 

Storage Temp:-35ºC to + 100[º] C; Operating Temp: -20[º] C to +85[º] C Vibration: 20 G's to 2000 Hz; Shock: 50 G's 

All electrical parameters measured at 25[º] C unless otherwise specified. 

page 2  |  Copyright 2025. All rights reserved.  |  rev.04072025 

**www.cototechnology.com** 

**COTO CLASSIC™ 5500 SERIES HIGH VOLTAGE REED RELAYS** 

## **7 Package Information** 

## **Tray Packaging Dimensions** 

• 21 relays per tray 

**==> picture [156 x 206] intentionally omitted <==**

**----- Start of picture text -----**<br>
In Inches (Millimeters)<br>9.9 (254)<br>8.9<br>(226)<br>1.0<br>(25.4)<br>**----- End of picture text -----**<br>


## **8 Relay Processing Notes** 

## **8.1 Soldering** 

Relays can be soldered by hand or by wave solder processing. Coto Technology recommends the maximum wave solder temperature (measured at the relay leads) as 270°C for 10 seconds. Temperature and time in excess of the recommended levels may result in damage to the relay. All our through-hole relays are compatible with either SAC alloy or eutectic soldering process. 

## **8.2 Cleaning** 

5500 is designed and manufactured to provide an adequate seal from external conditions. However, caution must be taken during the cleaning process not to expose the relays to conditions that will allow moisture to permeate into the package. Caution should be taken with dwell time between reflow and cleaning, high pressure spraying, and time in cleaning solvent/aqueous solutions, as these cleaning process parameters can contribute to moisture permeation. Board level bake out may be required after wash to remove moisture that has been introduced during cleaning operations. 

## **8.3 Relay Storage** 

Relay parametric specifications are specified at 25°C and 40% RH. Reduced relay performance may result if storage or use environments significantly exceed these conditions. If high insulation resistance is required, Coto Technology recommends that relay storage, processing, and use environments are adequate to achieve the desired results. Relays should be stored in similar environmental conditions as other high-reliability active and passive electronic components. Proper storage of relays is also important to maintain solderability over an extended period of time. 

## **8.4 Handling** 

Relays should be handled with care. Dropping or mishandling relays may result in damage that can contribute to a direct failure or, even worse, a latent field failure. If relays are dropped, Coto Technology recommends that they should be discarded. 

Coto Technology does not recommend use of ultrasonic activated equipment with relays. The use of ultrasonic equipment may change the characteristics of the relay and can contribute to failure. 

For more **technical and application information** , please refer to the following QR code: 

Download App Note: **"Using a High-Voltage Reed Relay for a Pulsed Field Ablation (PFA) System"** , please refer to the following QR code: 

Copyright 2025. All rights reserved.  |  rev.04072025  |  page 3 

**www.cototechnology.com** 

**COTO CLASSIC™ 5500 SERIES HIGH VOLTAGE REED RELAYS** 

## **9 IMPORTANT NOTICE AND DISCLAIMER** 

COTO TECHNOLOGY, INC. (“COTO”) PROVIDES THIS DATA SHEET “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ANY AND ALL WARRANTIES, EXPRESS AND IMPLIED, WITH RESPECT TO INFORMATION SET FORTH HEREIN, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF ACCURACY, COMPLETENESS, MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD-PARTY INTELLECTUAL PROPERTY RIGHTS. Your receipt of this data sheet constitutes your acknowledgement and acceptance of, and agreement to, all of the terms, conditions, notes, notices, disclaimers and limitations set forth herein. 

This data sheet is subject to change without notice. Coto reserves the right to make, from time to time, changes to specifications set forth herein as may be necessary or desirable to improve the performance, reliability and/or manufacturability of the products described herein. As such, before placing an order of any Coto product described herein, you must verify that the information set forth herein is current with respect to such product, and Coto assumes no responsibility for any damages which you may incur due to your failure to do so. 

Coto grants you permission to use this data sheet only for information and reference purposes, and any other use of this data sheet by you is prohibited. No license to any intellectual property right of Coto or any third party is granted hereunder. 

You are solely responsible for (1) deciding whether to purchase or use any Coto product, (2) selecting appropriate Coto products for your application, (3) designing, validating and testing your application incorporating or involving any Coto product and (4) ensuring that such application meets applicable safety, security, regulatory or other requirements or standards. Any purchase or use of any Coto product must fully comply with all applicable laws and regulations, including, without limitations, import and export regulations. 

Coto products described herein have been designed, developed and manufactured to be used in the standard commercial applications similar to those shown herein (“Specific Applications”). Any application requiring measures of reliability, robustness, safety or certifications not shown or beyond those shown herein is at the user’s risk and is not warranted or guaranteed by Coto. Therefore, you are advised to use Coto products described herein only in Specific Applications. 

Your purchase and use of Coto products, including, without limitation, those products described herein, are subject to Coto’s terms and conditions of sale and other applicable terms available on Coto’s website or otherwise provided or made available in conjunction with such products. Unless such terms and conditions state otherwise, COTO PRODUCTS ARE PROVIDED “AS IS” AND WITH ALL FAULTS, AND ANY AND ALL WARRANTIES, EXPRESS AND IMPLIED, WITH RESPECT TO SUCH PRODUCTS, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD-PARTY INTELLECTUAL PROPERTY RIGHTS, ARE DISCLAIMED. Coto’s provision of this data sheet does not expand or otherwise alter Coto’s applicable warranties or warranty disclaimers for Coto products. 

Coto disclaims responsibility for, and you will fully defend, indemnify and hold harmless Coto, its affiliates and its and their respective equity holders, directors, officers, employees, representatives, agents, successors and assigns against and for, any and all claims, damages, costs, losses and liabilities arising out of your use of this data sheet or your purchase or use of any Coto product described herein. 

page 4  |  Copyright 2025. All rights reserved.  |  rev.04072025 

**www.cototechnology.com**