ZXRE1004ERSTZ Equivalent & Substitute Parts

Part Overview

The ZXRE1004ERSTZ is a shunt voltage reference IC manufactured by Diodes Incorporated, designed to provide a fixed 1.22V output with ±2% tolerance. This through-hole component operates across the industrial temperature range of -40°C to 85°C and is packaged in an E-Line (TO-92 compatible) configuration. The product is currently obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

ZXRE1004ERSTZ

Diodes IncorporatedIn Stock: 704ZXRE1004ERSTZ Datasheet

Current PartRFQ

ZXRE1004DFTA

Diodes IncorporatedIn Stock: 17198ZXRE1004DFTA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ZXRE1004ERSTZ is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Fixed output voltage of 1.22V
• Output current capability of 20 mA minimum
• Temperature coefficient of 75 ppm/°C
• Operating temperature range of -40°C to 85°C
• Cathode current of 8 µA
• Noise specification of 60 µVrms (10Hz to 10kHz)

Mechanical Compatibility Criteria:

• Shunt reference type
• Three-terminal configuration
• RoHS3 compliance
• Moisture sensitivity level 1 (unlimited)

The ZXRE1004DFTA qualifies as a direct substitute based on matching all critical electrical parameters and maintaining the same base product number (ZXRE1004). The primary differences are packaging format (surface mount SOT-23-3 versus through-hole E-Line) and improved voltage tolerance (±1% versus ±2%).

Parameter Comparison

Engineering Selection Recommendations

The ZXRE1004DFTA serves as the primary substitute for the obsolete ZXRE1004ERSTZ. Both components maintain identical electrical specifications for output voltage, current, temperature coefficient, and noise performance. The ZXRE1004DFTA offers improved voltage tolerance (±1% versus ±2%), providing enhanced accuracy for precision reference applications.

Selection between these components depends on circuit implementation requirements:

Through-Hole Applications: The ZXRE1004ERSTZ E-Line package is suitable for through-hole PCB designs. Given its obsolete status, existing inventory should be evaluated for remaining product lifecycle requirements.

Surface-Mount Applications: The ZXRE1004DFTA SOT-23-3 package is appropriate for modern surface-mount PCB designs. This component carries a Last Time Buy status, indicating limited future availability.

Both components maintain ROHS3 compliance and unlimited moisture sensitivity rating, ensuring compatibility with current manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can the ZXRE1004DFTA directly replace the ZXRE1004ERSTZ in existing designs?

A: Electrical substitution is valid when circuit topology accommodates the SOT-23-3 surface-mount package. The identical output voltage (1.22V), current rating (20 mA), temperature coefficient (75 ppm/°C), and operating range (-40°C to 85°C) ensure functional compatibility. PCB layout modifications are required to transition from through-hole to surface-mount packaging.

Q: What is the significance of the voltage tolerance difference (±2% versus ±1%)?

A: The ZXRE1004DFTA provides tighter voltage tolerance, resulting in more precise reference voltage output. Applications requiring voltage accuracy better than ±2% benefit from this specification improvement. Systems tolerant of ±2% variation function identically with either component.

Q: Why is the ZXRE1004ERSTZ listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The ZXRE1004DFTA represents the current production alternative within the ZXRE1004 product family, though it carries Last Time Buy status, signifying limited future availability.

Q: Are there compliance differences between these components?

A: Both components maintain identical RoHS3 compliance, REACH unaffected status, and moisture sensitivity level 1 (unlimited). No compliance barriers exist for substitution.

Q: What packaging considerations apply to substitution?

A: The ZXRE1004ERSTZ uses E-Line-3 (TO-92 compatible) through-hole packaging, while the ZXRE1004DFTA uses SOT-23-3 surface-mount packaging. Circuit board design must accommodate the selected package type. Pin configuration remains consistent across both variants.