KA723 Linear Voltage Regulator - Equivalent & Substitute Parts

Part Overview

The KA723 is a linear voltage regulator IC manufactured by onsemi, designed for positive adjustable output applications with 150mA current capability in a 14-MDIP package. This device functions as a precision voltage regulator suitable for power management applications requiring adjustable output voltage between 2V and 37V.

The KA723 is classified as obsolete, making identification of functionally equivalent substitute parts necessary for ongoing design support and procurement. Substitute parts must maintain electrical compatibility across key parameters including output voltage range, current rating, and thermal characteristics, while accommodating modern packaging and availability constraints.

Substiute Parts

KA723

onsemiIn Stock: 1395KA723 Datasheet

Current PartRFQ

UA723CN

Texas InstrumentsIn Stock: 7132UA723CN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the KA723 are identified based on strict electrical and mechanical compatibility criteria. The following parameters determine valid substitution:

• Output voltage range: 2V to 37V adjustable
• Output current capability: 150mA minimum
• Input voltage rating: 40V maximum
• Package form factor: 14-DIP through-hole configuration
• Control feature: Current limit functionality
• Operating temperature range: 0°C to 70°C minimum

The UA723CN from Texas Instruments meets all specified electrical parameters and maintains the same 14-DIP package footprint, enabling direct functional substitution in existing designs.

Parameter Comparison

Engineering Selection Recommendations

The UA723CN from Texas Instruments provides direct electrical and mechanical compatibility with the KA723. Both devices share identical output voltage ranges, current ratings, and package configurations. The UA723CN maintains REACH compliance and is classified as Last Time Buy status, indicating continued availability for near-term procurement.

Selection between KA723 and UA723CN should be based on inventory availability and supply chain requirements. The UA723CN offers higher current inventory levels (7086 pieces) compared to KA723 (1364 pieces), supporting sustained production requirements. Both devices are REACH Unaffected and suitable for applications within the specified operating temperature range of 0°C to 70°C.

Frequently Asked Questions (FAQ)

Q: Can UA723CN directly replace KA723 in existing PCB designs?

A: Yes. Both devices share identical 14-DIP package dimensions (0.300", 7.62mm) and pin configurations, enabling direct board-level substitution without layout modifications.

Q: Are there electrical performance differences between KA723 and UA723CN?

A: Both devices meet the same electrical specifications for output voltage range (2V to 37V), output current (150mA), input voltage rating (40V), and operating temperature range (0°C to 70°C). PSRR specifications are provided within equivalent ranges.

Q: What is the significance of the product status difference?

A: KA723 is classified as Obsolete, while UA723CN is Last Time Buy. This indicates that UA723CN has defined end-of-life dates with limited future availability, whereas KA723 is no longer in production. For new designs or long-term production, UA723CN should be selected while inventory is available.

Q: Are there compliance or certification differences?

A: Both devices maintain REACH Unaffected status. UA723CN carries RoHS3 Compliant certification, providing additional environmental compliance documentation for regulated applications.

Q: What packaging formats are available?

A: KA723 is supplied in standard packaging format. UA723CN is supplied in Tube packaging. Both maintain the same 14-DIP through-hole form factor for PCB mounting.