BZX784C3V3-TP Equivalent & Substitute Parts

Part Overview

The BZX784C3V3-TP is a Zener diode rated at 3.3 V nominal with 150 mW maximum power dissipation in a surface mount SOD-723 package. Manufactured by Micro Commercial Co, this component is classified as obsolete. Due to its obsolete status and limited availability relative to active alternatives, identifying equivalent substitute parts is necessary for ongoing design support and production continuity.

Substiute Parts

BZX784C3V3-TP

Micro Commercial CoIn Stock: 1230BZX784C3V3-TP Datasheet

Current PartRFQ

CMOZ3V3 TR PBFREE

Central Semiconductor CorpIn Stock: 16493CMOZ3V3 TR PBFREE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZX784C3V3-TP is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Zener voltage must match at 3.3 V nominal
• Impedance (Zzt) must be within acceptable range (95 Ohms maximum)
• Forward voltage characteristics must align (900 mV @ 10 mA)
• Reverse leakage current specifications must be compatible

Mechanical and Environmental Criteria:

• Surface mount mounting type required
• Operating temperature range must encompass or exceed -55°C ~ 150°C
• RoHS3 compliance required
• Moisture sensitivity level MSL 1 (Unlimited) required

Power Dissipation Consideration:

• Substitute parts may have equal or greater maximum power rating (150 mW or higher)
• Package form factor may differ while maintaining electrical equivalence

The CMOZ3V3 TR PBFREE meets all critical electrical parameters and environmental requirements, with enhanced power handling capability and active product status.

Parameter Comparison

Engineering Selection Recommendations

The CMOZ3V3 TR PBFREE is a direct electrical equivalent to the BZX784C3V3-TP for 3.3 V Zener diode applications. Selection of this substitute is supported by the following factors:

Electrical Equivalence: All critical electrical parameters align between the two components. The nominal Zener voltage, impedance, and forward voltage characteristics are identical. The substitute exhibits superior reverse leakage performance (2 µA versus 5 µA), representing an improvement in leakage characteristics.

Compliance and Certification: Both components maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. The substitute carries REACH Unaffected status, providing additional regulatory assurance.

Product Availability and Status: The BZX784C3V3-TP is classified as obsolete with limited inventory. The CMOZ3V3 TR PBFREE maintains active product status with substantial inventory availability (16,458 pieces), ensuring long-term supply continuity.

Power Handling Enhancement: The substitute provides doubled maximum power dissipation (300 mW versus 150 mW), offering design margin for thermal performance without compromising electrical characteristics.

Package Consideration: The substitute uses SOD-523 package versus the original SOD-723. Both are surface mount packages suitable for automated assembly. PCB layout and footprint modifications are required for package transition.

Frequently Asked Questions (FAQ)

Q: Can the CMOZ3V3 TR PBFREE directly replace the BZX784C3V3-TP without circuit modifications?

A: Electrical substitution is direct. The Zener voltage, impedance, and forward voltage characteristics are identical. PCB footprint modification is required due to package change from SOD-723 to SOD-523.

Q: What is the significance of the ±5% tolerance on the substitute versus ±6.06% on the original?

A: The substitute provides tighter voltage tolerance, representing improved manufacturing precision. This does not prevent substitution; it provides enhanced voltage regulation accuracy.

Q: Does the increased power rating of 300 mW on the substitute create any compatibility issues?

A: No. Higher power rating indicates greater thermal capability. The component operates within the same electrical parameters and will not introduce overstress conditions in circuits designed for the 150 mW original part.

Q: Are there temperature range differences between the two parts?

A: The substitute operates from -65°C to 150°C versus -55°C to 150°C on the original. The extended lower temperature range provides additional operational margin without affecting upper temperature performance.

Q: What does the "TR PBFREE" designation indicate on the substitute part number?

A: TR indicates Tape & Reel packaging format for automated assembly. PBFREE indicates lead-free (RoHS compliant) construction. Both are standard designations for surface mount components.

Q: Is the lower reverse leakage current (2 µA) on the substitute a concern?

A: No. Lower reverse leakage represents improved performance. This characteristic does not prevent substitution and indicates superior diode quality.

Q: What is the primary reason for substituting the BZX784C3V3-TP?

A: The original component is classified as obsolete. The substitute maintains active product status with reliable long-term availability, ensuring production continuity and supply chain stability.