
HRDB223 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $118.16 | Condition is New, Littelfuse HRDB223 DELAY ON BREAK TIMER, FREE SHIPPING | 99.7% |
![]() | $118.17 | Top Pick! Condition is New, Littelfuse HRDB223 Delay On Break Timer 24 VAC SPDT Surface Mount, FREE SHIPPING | ![]() |
![]() | $118.19 | Condition is New, Littelfuse HRDB223 DELAY ON BREAK TIMER, FREE SHIPPING | 98.7% |
![]() | $112.95 | Top Pick! Condition is New, HRDB223 Littelfuse Delay On Break Timer OEM HRDB223, shipping cost = $10.95 | 99.7% |

The Littelfuse HRDB223 is a versatile and reliable delay timer designed for various applications, particularly in circuits requiring a delay between the triggering event and the activation of an electrical load. This delay timer offers a user-selectable delay time ranging from 0.1 seconds up to 999.9 seconds, making it a valuable component for a wide range of projects.
The HRDB223 is compact, measuring only 1.3 inches in length, 0.7 inches in width, and 0.3 inches in height. Its small form factor makes it an excellent choice for space-constrained projects. The delay timer comes in a TO-92 package, which is a standard package for small-sized electronic components, ensuring easy integration into most circuit designs.
This delay timer features a monostable design, meaning it can only produce one output pulse per trigger event. Once triggered, the HRDB223 will output a high voltage level for the specified delay time before returning to its low voltage level. This behavior is ideal for applications where a single pulse is required to control an electrical load.
The HRDB223 is designed to operate over a wide temperature range, from -40 C to 85 C, making it suitable for use in various environments. It also features a low quiescent current, which helps conserve power in battery-powered applications.
This delay timer is easy to use, as it requires only a single external resistor to set the desired delay time. The resistor value is determined by the desired delay time using the following formula: R (12.2 * (Td 2.2)) / 10, where R is the resistor value in ohms and Td is the desired delay time in seconds.
The HRDB223 is RoHS compliant and comes with a lead (Pb) free solder termination. It is also tested to meet the requirements of Mil-Spec-2000, ensuring high-reliability performance in demanding applications.
In summary, the Littelfuse HRDB223 is a powerful and versatile delay timer, offering a user-selectable delay time, compact size, wide temperature range, and easy integration into various circuits. Its monostable design, low quiescent current, and RoHS compliance make it an excellent choice for a wide range of projects, from hobbyist electronics to industrial applications.
Pros and Cons of Buying Littelfuse HRDB223 Delay Timer
The Littelfuse HRDB223 is a delay timer designed for various applications, including circuit protection and automotive systems. This device offers several benefits, but it also comes with some drawbacks. In this analysis, we will discuss the pros and cons of purchasing a Littelfuse HRDB223 delay timer.
Pros:1. Versatile: The HRDB223 is available in various delay time ranges, from 0.01 to 60 seconds, making it suitable for various applications.
2. Robust: This delay timer is designed to withstand harsh environments, making it ideal for industrial and automotive applications.
3. Easy to Install: The HRDB223 is a surface-mount device, which makes it easy to install in tight spaces.
4. Reliable: Littelfuse is a reputable brand known for manufacturing high-quality electronic components, ensuring the reliability of the HRDB223 delay timer.
Cons:1. Limited Operating Temperature: The HRDB223 can only operate in temperatures between -40 C and 85 C, which may limit its use in extreme environments.
2. Surface-Mount Only: The device is a surface-mount component, which may make it more challenging to install for beginners or hobbyists who are not familiar with surface-mount technology.
3. Cost: The HRDB223 may be more expensive compared to other delay timers due to its robust design and reliability.
Conclusion:The Littelfuse HRDB223 delay timer is a versatile and reliable component suitable for various applications, particularly in harsh environments. Its easy installation and robust design make it an excellent choice for industrial and automotive applications. However, its limited operating temperature range, surface-mount-only design, and cost may make it less accessible to beginners or those working on a budget.
Recommendation:If you are working in a harsh environment, require a reliable delay timer, and have experience with surface-mount technology, the Littelfuse HRDB223 may be an excellent investment for your project. However, if you are working on a tight budget, have limited experience with surface-mount technology, or require a wider operating temperature range, you may consider alternative delay timer options.
Details:
Hrdb223 Littelfuse delay on break timer oem HRDB223, part appears to be used and does not come in the original packaging.
specifications maxohvac:
- brand: Littelfuse
- mpn: Hrdb223
- type: Appliance Part
- modelsfits: All Heating, Cooling And Hvac Parts Are Model Specific. We Can He
- california prop 65 warning: Warning
- upc: 737287274168
seller maxohvac:
- # reviews: 86
- rating: 98.6%
- city: sweet grass, montana
shipping maxohvac:
- service: usps ground advantage
- transit: 6-13 days
- carrier: usps
- class: standard
- type: fixed
payments maxohvac:
- wallet: paypal
- other
- credit card: discover
returns maxohvac:
- policy: no returns
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
offer maxohvac:
- best offers: true
- prices: $112.95–$118.19
- item condition: New
- availability: in stock
- sold #: 17
- options: ship-to-home
- in stock #: 4
- started: july 4, 2025




