MAX6325CSA Equivalent & Substitute Parts

Part Overview

The MAX6325CSA is a Series, Buried Zener Voltage Reference IC manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed 2.5V output with ±0.04% tolerance and is designed for precision voltage reference applications requiring low noise and stable performance across industrial temperature ranges. The part is currently classified as Obsolete, making identification of compatible substitutes essential for ongoing system support and new design implementations.

Substiute Parts

MAX6325CSA

Analog Devices Inc./Maxim IntegratedIn Stock: 2295MAX6325CSA Datasheet

Current PartRFQ

MAX6325CSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1820MAX6325CSA+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX6325CSA is determined by strict equivalence across the following critical parameters:

• Reference Type: Series, Buried Zener
• Output Voltage: Fixed 2.5V
• Output Current: 15 mA
• Tolerance: ±0.04%
• Temperature Coefficient: 1ppm/°C
• Noise Performance: 1.5µVp-p (0.1Hz to 10Hz) and 1.3µVrms (10Hz to 10kHz)
• Input Voltage Range: 8V ~ 36V
• Supply Current: 3mA
• Operating Temperature Range: 0°C ~ 70°C
• Package: 8-SOIC Surface Mount

Only parts meeting all these specifications are considered direct equivalents. Packaging variations (such as Tube vs. standard packaging) do not affect electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The MAX6325CSA+ is a direct electrical equivalent to the MAX6325CSA with identical performance specifications across all critical parameters. The primary distinction is product status: MAX6325CSA+ is Active, whereas MAX6325CSA is Obsolete.

For new designs and ongoing system support, MAX6325CSA+ is the appropriate selection. It provides ROHS3 compliance, addressing regulatory requirements that the original MAX6325CSA does not meet. Both parts are functionally interchangeable at the circuit level due to matching electrical characteristics, pinout configuration, and thermal performance.

Packaging differences (Tube for MAX6325CSA+) do not affect electrical performance or PCB integration. Selection between these variants should be based on procurement requirements, compliance mandates, and product lifecycle considerations.

Frequently Asked Questions (FAQ)

Q: Can MAX6325CSA+ directly replace MAX6325CSA in existing designs?

A: Yes. Both parts are electrically identical with matching output voltage (2.5V), tolerance (±0.04%), temperature coefficient (1ppm/°C), noise specifications, and operating ranges. Pin configuration and package dimensions are identical (8-SOIC). No circuit modifications are required.

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

A: MAX6325CSA is classified as Obsolete, indicating it is no longer manufactured or supported by Analog Devices Inc./Maxim Integrated. MAX6325CSA+ is Active, ensuring continued availability, technical support, and compliance with current manufacturing standards.

Q: Does the RoHS compliance difference affect compatibility?

A: RoHS compliance is a manufacturing and regulatory attribute, not an electrical performance characteristic. MAX6325CSA+ meets ROHS3 standards, while MAX6325CSA does not. For applications subject to RoHS regulations, MAX6325CSA+ is required. For legacy systems without regulatory constraints, both parts function identically.

Q: Are there packaging considerations when substituting these parts?

A: Both parts use 8-SOIC surface mount packaging with identical dimensions (0.154", 3.90mm Width). MAX6325CSA+ is supplied in Tube packaging, which is a distribution format that does not affect electrical performance or PCB assembly compatibility.

Q: What parameters must remain constant for substitution?

A: All electrical parameters must match exactly: reference type, output voltage, output current, tolerance, temperature coefficient, noise specifications, input voltage range, supply current, and operating temperature range. Package type and mounting method must also be identical.