ZRC250A01STZ Equivalent & Substitute Parts

Part Overview

The ZRC250A01STZ is a shunt voltage reference IC manufactured by Diodes Incorporated, designed to provide a fixed 2.5V output with ±1% tolerance. This component is classified as a Power Management (PMIC) device and is packaged in TO-92 form factor for through-hole mounting applications.

The ZRC250A01STZ has reached obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this reference voltage source.

Substiute Parts

ZRC250A01STZ

Diodes IncorporatedIn Stock: 1098ZRC250A01STZ Datasheet

Current PartRFQ

LM4040DIZ-5.0/LFT1

National SemiconductorIn Stock: 41969LM4040DIZ-5.0/LFT1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ZRC250A01STZ is determined by the following critical parameters:

• Reference Type: Shunt voltage reference topology
• Output Type: Fixed voltage output
• Tolerance: ±1% accuracy specification
• Temperature Coefficient: Stability across operating temperature range
• Package / Case: TO-92-3 form factor for mechanical and electrical compatibility
• Mounting Type: Through-hole configuration
• Operating Temperature Range: -40°C ~ 85°C

The substitute part LM4040DIZ-5.0/LFT1 shares the same reference type (shunt), output type (fixed), tolerance (±1%), package form factor (TO-92-3), mounting type (through-hole), and operating temperature range. These parameters establish functional and mechanical compatibility for substitution purposes.

Parameter Comparison

Engineering Selection Recommendations

The LM4040DIZ-5.0/LFT1 is available as an active product from National Semiconductor with established supply chain availability (41,938 pieces in stock), whereas the ZRC250A01STZ is obsolete. Both devices maintain ROHS3 compliance and identical operating temperature ranges (-40°C ~ 85°C).

Selection of LM4040DIZ-5.0/LFT1 as a substitute requires circuit-level evaluation due to output voltage difference (5V versus 2.5V) and performance parameter variations. The substitute exhibits higher output current capability (15 mA versus 5 mA), higher temperature coefficient (150ppm/°C versus 90ppm/°C), and higher cathode current (85 µA versus 20 µA). These differences necessitate verification of circuit tolerance and application requirements before implementation.

Frequently Asked Questions (FAQ)

Q: Can LM4040DIZ-5.0/LFT1 directly replace ZRC250A01STZ in all applications?

A: Direct replacement is not guaranteed. While both devices share shunt reference topology, fixed output type, ±1% tolerance, TO-92-3 packaging, and identical operating temperature range, the output voltage differs (5V versus 2.5V). Circuit design must accommodate this voltage difference. Additionally, the substitute exhibits higher temperature coefficient and cathode current, which may affect circuit performance in temperature-sensitive or low-power applications.

Q: What are the key compatibility factors for substitution?

A: Compatibility is established through: reference type (shunt), output type (fixed), tolerance specification (±1%), package form factor (TO-92-3), mounting type (through-hole), and operating temperature range (-40°C ~ 85°C). Output voltage, current ratings, and temperature coefficient must be evaluated within specific circuit requirements.

Q: Why does the substitute part have different output voltage?

A: The LM4040DIZ-5.0/LFT1 is designed for 5V reference applications, while the ZRC250A01STZ provides 2.5V output. These are distinct product variants within the respective manufacturer's reference voltage IC families. Selection depends on circuit voltage requirements.

Q: Are there packaging or mounting differences?

A: Both devices utilize identical TO-92-3 (TO-226AA) packaging with through-hole mounting configuration. Physical and electrical interface compatibility is maintained.

Q: What is the product status significance?

A: The ZRC250A01STZ is obsolete, indicating discontinued manufacturing and limited availability. The LM4040DIZ-5.0/LFT1 maintains active product status with established supply chain availability, supporting long-term design continuity and production requirements.