DL4732A-TP Equivalent & Substitute Parts

Part Overview

The DL4732A-TP is a Zener diode rated at 4.7 V, 1 W with ±5% tolerance, manufactured by Micro Commercial Co in a Surface Mount MELF package. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design requirements and procurement continuity. The part operates across a temperature range of -65°C to 175°C and is ROHS3 compliant.

Substiute Parts

DL4732A-TP

Micro Commercial CoIn Stock: 5956DL4732A-TP Datasheet

Current PartRFQ

CDLL3825A/TR

Microchip TechnologyIn Stock: 957CDLL3825A/TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DL4732A-TP is determined by electrical and mechanical parameter equivalence. The critical parameters for substitution are:

• Zener voltage rating: 4.7 V nominal
• Power dissipation capability: 1 W maximum
• Voltage tolerance: ±5%
• Impedance specification: 8 Ohms maximum
• Forward voltage characteristic: 1.2 V maximum at 200 mA
• Operating temperature range: -65°C to 175°C
• Package type: DO-213AB / MELF Surface Mount
• Regulatory compliance: ROHS3 Compliant

The CDLL3825A/TR from Microchip Technology meets all specified electrical and mechanical parameters, with the distinction of active product status and improved reverse leakage characteristics.

Parameter Comparison

Engineering Selection Recommendations

The CDLL3825A/TR is a direct electrical and mechanical equivalent to the DL4732A-TP. Both components share identical zener voltage, power rating, tolerance, impedance, forward voltage characteristics, operating temperature range, and package specifications. The CDLL3825A/TR maintains ROHS3 compliance and REACH unaffected status consistent with the original part.

The primary distinction is product status: the DL4732A-TP is obsolete while the CDLL3825A/TR is active. The CDLL3825A/TR exhibits superior reverse leakage performance at 5 µA @ 1 V compared to 10 µA @ 1 V for the original part, representing an improvement in leakage characteristics within the same electrical specification envelope.

For new designs and procurement of replacement components, the CDLL3825A/TR is the appropriate selection based on active product availability and regulatory compliance alignment.

Frequently Asked Questions (FAQ)

Q: Can the CDLL3825A/TR be used as a direct replacement for the DL4732A-TP?

A: Yes. The CDLL3825A/TR meets all electrical parameters (4.7 V zener voltage, 1 W power rating, ±5% tolerance, 8 Ohms impedance, 1.2 V forward voltage at 200 mA) and mechanical specifications (DO-213AB MELF package, Surface Mount) of the DL4732A-TP. Both components operate across -65°C to 175°C and maintain ROHS3 compliance.

Q: What is the difference in reverse leakage between these parts?

A: The CDLL3825A/TR specifies 5 µA @ 1 V reverse leakage, while the DL4732A-TP specifies 10 µA @ 1 V. The CDLL3825A/TR exhibits lower reverse leakage within the same electrical specification framework.

Q: Are the packages identical?

A: Yes. Both the DL4732A-TP and CDLL3825A/TR use the DO-213AB MELF Surface Mount package, ensuring mechanical and footprint compatibility.

Q: Why is the DL4732A-TP listed as obsolete?

A: The DL4732A-TP is classified as obsolete by the manufacturer. The CDLL3825A/TR from Microchip Technology is the active equivalent part for ongoing procurement and design applications.

Q: Are there regulatory compliance differences?

A: No. Both parts are ROHS3 compliant and REACH unaffected, maintaining equivalent regulatory status.