ZXRE125FRSTOA Equivalent & Substitute Parts

Part Overview

The ZXRE125FRSTOA is a shunt voltage reference IC manufactured by Diodes Incorporated, designed to provide a fixed 1.22V output with ±3% tolerance. This component is classified as a Power Management (PMIC) device and is packaged in an E-Line (TO-92 compatible) through-hole configuration. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

ZXRE125FRSTOA

Diodes IncorporatedIn Stock: 1039ZXRE125FRSTOA Datasheet

Current PartRFQ

ZXRE125FFTA

Diodes IncorporatedIn Stock: 5006ZXRE125FFTA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ZXRE125FRSTOA is determined by electrical parameter equivalence across the following critical specifications:

• Fixed output voltage of 1.22V
• Output current capability of 20 mA
• Voltage tolerance of ±3%
• Temperature coefficient of 75ppm/°C
• Noise performance of 60µVrms (10Hz to 10kHz)
• Cathode current of 8 µA
• Operating temperature range of -40°C ~ 85°C
• Shunt reference type with fixed output configuration

The ZXRE125FFTA qualifies as a direct electrical substitute, maintaining identical electrical specifications while differing in packaging and mounting technology. Both components share the same base product number (ZXRE125) and are manufactured by Diodes Incorporated.

Parameter Comparison

Engineering Selection Recommendations

The ZXRE125FFTA is the recommended substitute for the obsolete ZXRE125FRSTOA based on the following criteria:

Electrical equivalence is complete across all specified parameters, including output voltage, current capability, tolerance, temperature coefficient, and noise performance. Both components maintain ROHS3 compliance and are manufactured by the same supplier.

The primary distinction is packaging technology. The ZXRE125FRSTOA uses through-hole E-Line (TO-92 compatible) mounting, while the ZXRE125FFTA employs surface-mount SOT-23-3 technology. Selection between these variants depends on the PCB assembly process and design requirements of the target application.

The ZXRE125FFTA carries active product status, ensuring continued availability and manufacturing support, whereas the ZXRE125FRSTOA is obsolete. For new designs or production continuity, the ZXRE125FFTA is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Are the ZXRE125FRSTOA and ZXRE125FFTA electrically identical?

A: Yes. Both components provide identical electrical performance: 1.22V fixed output, 20 mA output current, ±3% tolerance, 75ppm/°C temperature coefficient, and 60µVrms noise performance across the 10Hz to 10kHz bandwidth.

Q: What is the primary difference between these two parts?

A: The primary difference is packaging and mounting technology. The ZXRE125FRSTOA is a through-hole component in E-Line (TO-92 compatible) packaging, while the ZXRE125FFTA is a surface-mount device in SOT-23-3 packaging.

Q: Can I use the ZXRE125FFTA as a direct replacement in a through-hole design?

A: No. The ZXRE125FFTA requires surface-mount assembly capabilities. Direct substitution in through-hole designs would require PCB redesign and assembly process modification.

Q: Why is the ZXRE125FRSTOA listed as obsolete?

A: The ZXRE125FRSTOA is obsolete, indicating it is no longer in active production. The ZXRE125FFTA represents the current active product offering from Diodes Incorporated for this voltage reference specification.

Q: Are both parts RoHS compliant?

A: Yes. Both the ZXRE125FRSTOA and ZXRE125FFTA are ROHS3 compliant.