MMBZ5229BTS-7-F Equivalent & Substitute Parts

Part Overview

The MMBZ5229BTS-7-F is an active zener diode array manufactured by Diodes Incorporated, configured as three independent 4.3 V zener diodes in a 6-TSSOP (SOT-363) surface mount package. This component is designed for voltage regulation and protection applications requiring compact form factors with multiple independent diode channels. The part is ROHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical specifications and functional performance can be maintained across alternative package configurations and manufacturers while preserving core zener voltage, tolerance, and thermal operating range parameters.

Substiute Parts

MMBZ5229BTS-7-F

Diodes IncorporatedIn Stock: 783MMBZ5229BTS-7-F Datasheet

Current PartRFQ

BZX84C4V3 TR PBFREE

Central Semiconductor CorpIn Stock: 36416BZX84C4V3 TR PBFREE Datasheet

MFR RecommendedRFQ

BZX84C4V3LT1G

onsemiIn Stock: 59112BZX84C4V3LT1G Datasheet

MFR RecommendedRFQ

CMPZ5229B TR PBFREE

Central Semiconductor CorpIn Stock: 4057CMPZ5229B TR PBFREE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMBZ5229BTS-7-F is determined by the following critical electrical parameters: nominal zener voltage of 4.3 V, voltage tolerance of ±5%, forward voltage of 900 mV at 10 mA, and operating temperature range of -65°C to 150°C. All substitute parts maintain these core specifications. Power dissipation ratings and impedance values may vary within acceptable ranges for the application category. Package configuration changes from SOT-363 (6-pin) to SOT-23 (3-pin) reflect the transition from a three-independent-diode array to single-diode configurations, which alters the physical form factor and pin count but preserves individual diode electrical characteristics. Reverse leakage current specifications and RoHS3 compliance are maintained across all substitute options.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), ensuring compatibility with standard manufacturing and storage environments. The MMBZ5229BTS-7-F operates as a three-independent-diode array in SOT-363 packaging, while substitute parts BZX84C4V3 TR PBFREE, BZX84C4V3LT1G, and CMPZ5229B TR PBFREE are single-diode configurations in SOT-23 packaging. Selection between substitutes depends on circuit design requirements: applications requiring three independent diodes in a single package must retain the MMBZ5229BTS-7-F or use multiple SOT-23 devices. Applications requiring single-diode functionality with 4.3 V zener voltage can utilize any of the three substitute parts. The BZX84C4V3 TR PBFREE and CMPZ5229B TR PBFREE both offer 350 mW power dissipation, exceeding the original 200 mW specification. The BZX84C4V3LT1G provides 225 mW power dissipation with ±7% tolerance versus the ±5% tolerance of other options. Impedance values of 22 Ohms (MMBZ5229BTS-7-F and CMPZ5229B TR PBFREE) differ from 90 Ohms (BZX84C4V3 variants), which may affect circuit performance in applications sensitive to dynamic impedance characteristics. All parts maintain identical forward voltage and operating temperature specifications.

Frequently Asked Questions (FAQ)

Q: Can the MMBZ5229BTS-7-F be directly replaced with a single BZX84C4V3 device?

A: Direct one-to-one replacement is not possible due to configuration differences. The MMBZ5229BTS-7-F contains three independent zener diodes in a single SOT-363 package, while BZX84C4V3 variants are single-diode devices in SOT-23 packages. Circuit designs requiring three independent diodes must either retain the MMBZ5229BTS-7-F or incorporate three separate SOT-23 devices with corresponding layout modifications.

Q: What are the key electrical parameters that define substitution compatibility?

A: Substitution compatibility is determined by: nominal zener voltage (4.3 V), voltage tolerance (±5% for most options, ±7% for BZX84C4V3LT1G), forward voltage (900 mV @ 10 mA), and operating temperature range (-65°C to 150°C). These parameters ensure functional equivalence in voltage regulation and protection applications.

Q: How do impedance differences between parts affect circuit performance?

A: The MMBZ5229BTS-7-F and CMPZ5229B TR PBFREE specify 22 Ohms maximum impedance, while BZX84C4V3 variants specify 90 Ohms. Impedance affects dynamic response characteristics and voltage regulation under transient conditions. Applications with strict impedance requirements should verify compatibility before substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts—BZX84C4V3 TR PBFREE, BZX84C4V3LT1G, and CMPZ5229B TR PBFREE—are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), matching the original MMBZ5229BTS-7-F specifications.

Q: What is the significance of the ±7% tolerance in BZX84C4V3LT1G compared to ±5% in other parts?

A: The BZX84C4V3LT1G carries ±7% zener voltage tolerance versus ±5% for the MMBZ5229BTS-7-F, CMPZ5229B TR PBFREE, and BZX84C4V3 TR PBFREE. Applications requiring tighter voltage regulation should prioritize parts with ±5% tolerance specifications.

Q: Can substitute parts be used in high-temperature applications?

A: All parts, including substitutes, maintain the same operating temperature range of -65°C to 150°C. Thermal performance is equivalent across all options for applications within this range.

Q: What packaging considerations apply when substituting the SOT-363 with SOT-23 devices?

A: SOT-363 (6-pin) and SOT-23 (3-pin) packages have different physical dimensions and pin configurations. PCB layout modifications are required when transitioning from the three-independent-diode array (SOT-363) to single-diode SOT-23 configurations. Pin-to-pin compatibility does not exist between these package types.