1SMA4752 Equivalent & Substitute Parts

Part Overview

The 1SMA4752 is a Zener diode manufactured by SMC Diode Solutions, rated for 33 V nominal voltage and 1 W maximum power dissipation in a surface mount SMA (DO-214AC) package. This component is classified as an active product with ROHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified based on matching electrical specifications and mechanical compatibility to support procurement flexibility and supply chain continuity.

Substiute Parts

1SMA4752

SMC Diode SolutionsIn Stock: 7491SMA4752 Datasheet

Current PartRFQ

SMAJ4752A-TP

Micro Commercial CoIn Stock: 7710SMAJ4752A-TP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1SMA4752 are identified based on electrical parameter equivalence and mechanical compatibility. The substitution criteria are:

• Nominal Zener Voltage: 33 V (exact match required)
• Voltage Tolerance: ±5% (exact match required)
• Maximum Power Dissipation: 1 W (exact match required)
• Maximum Impedance: 45 Ohms (exact match required)
• Reverse Leakage Current: 5 µA @ 25.1 V (exact match required)
• Operating Temperature Range: -65°C to 150°C (exact match required)
• Package Type: DO-214AC / SMA surface mount (exact match required)
• Compliance Status: ROHS3 Compliant (required for regulatory compatibility)

The SMAJ4752A-TP from Micro Commercial Co meets all electrical and mechanical parameters specified above and qualifies as a parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

The SMAJ4752A-TP is a direct parametric equivalent to the 1SMA4752 based on matching electrical specifications and mechanical package compatibility. Both components are active products with ROHS3 compliance and identical operating temperature ranges. The substitute part maintains the same zener voltage, power rating, impedance characteristics, and reverse leakage specifications required for circuit functionality.

Selection between the 1SMA4752 and SMAJ4752A-TP is determined by availability, lead time, and procurement requirements. Both parts satisfy identical electrical and regulatory requirements for 33 V, 1 W zener diode applications in surface mount configurations.

Frequently Asked Questions (FAQ)

Q: Can the SMAJ4752A-TP replace the 1SMA4752 in existing designs?

A: Yes. The SMAJ4752A-TP is a parametric equivalent with identical nominal zener voltage (33 V), power rating (1 W), impedance (45 Ohms maximum), reverse leakage current (5 µA @ 25.1 V), and operating temperature range (-65°C to 150°C). Both components use the DO-214AC (SMA) surface mount package and are ROHS3 compliant.

Q: Are there package differences between these parts?

A: No. Both the 1SMA4752 and SMAJ4752A-TP use the DO-214AC surface mount package, also designated as SMA. Pin configuration and footprint are identical, allowing direct substitution on printed circuit boards.

Q: What is the significance of the ±5% tolerance specification?

A: The ±5% tolerance indicates the allowable deviation of the nominal 33 V zener voltage. Both parts maintain this tolerance specification, ensuring consistent voltage regulation performance across the specified operating temperature range.

Q: Do both parts have the same moisture sensitivity rating?

A: Yes. Both the 1SMA4752 and SMAJ4752A-TP carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture-related handling restrictions during storage, transport, or assembly.

Q: Are there compliance differences between the two parts?

A: Both parts are ROHS3 compliant. The 1SMA4752 is REACH Affected, while the SMAJ4752A-TP is REACH Unaffected. Both carry the same ECCN (EAR99) and HTSUS (8541.10.0050) classifications.

Q: What is the maximum reverse leakage current specification?

A: Both parts specify a maximum reverse leakage current of 5 µA measured at 25.1 V. This parameter defines the maximum current flowing through the diode in reverse bias condition and is critical for circuit design calculations.