MMBZ5241B-7 Equivalent & Substitute Parts

Part Overview

The MMBZ5241B-7 is a Zener diode rated at 11 V nominal with 350 mW maximum power dissipation in a surface mount SOT-23-3 package. Manufactured by Diodes Incorporated, this component is classified as discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design requirements and production needs. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives within acceptable parameter tolerances for 11 V Zener diode applications.

Substiute Parts

MMBZ5241B-7

Diodes IncorporatedIn Stock: 801MMBZ5241B-7 Datasheet

Current PartRFQ

MMBZ5241B-7-F

Diodes IncorporatedIn Stock: 2158MMBZ5241B-7-F Datasheet

DirectRFQ

BZX84B11-TP

Micro Commercial CoIn Stock: 2445BZX84B11-TP Datasheet

MFR RecommendedRFQ

BZX84C11-TP

Micro Commercial CoIn Stock: 6322BZX84C11-TP Datasheet

MFR RecommendedRFQ

MMBZ5241BLT1G

onsemiIn Stock: 305392MMBZ5241BLT1G Datasheet

MFR RecommendedRFQ

SZMMBZ5241BLT1G

onsemiIn Stock: 4488SZMMBZ5241BLT1G Datasheet

MFR RecommendedRFQ

CMPZ5241B TR PBFREE

Central Semiconductor CorpIn Stock: 4251CMPZ5241B TR PBFREE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMBZ5241B-7 is determined by the following critical parameters: nominal Zener voltage (11 V), maximum power dissipation capability, voltage tolerance, impedance characteristics, reverse leakage current, forward voltage drop, operating temperature range, and physical package compatibility (SOT-23-3 / TO-236-3).

Substitute parts are grouped into three categories:

Category 1: Direct Manufacturer Equivalent (Same Manufacturer, Active Status) Parts maintaining identical electrical specifications with improved product status and compliance. MMBZ5241B-7-F is the active production equivalent from Diodes Incorporated.

Category 2: Manufacturer-Recommended Alternatives (Different Manufacturer, Tighter Tolerances) Parts from alternative manufacturers (Micro Commercial Co) with equivalent or superior electrical performance. BZX84B11-TP and BZX84C11-TP provide tighter tolerance options (±2% and ±5% respectively) with lower impedance (20 Ohms vs. 22 Ohms) and reduced reverse leakage current (100 nA vs. 2 µA).

Category 3: Parametric Equivalents (Same Manufacturer, Reduced Power Rating) Parts with identical voltage and tolerance specifications but reduced maximum power dissipation (225 mW vs. 350 mW). MMBZ5241BLT1G and SZMMBZ5241BLT1G from onsemi are suitable for applications not requiring full 350 mW power handling. SZMMBZ5241BLT1G includes automotive qualification (AEC-Q101).

Category 4: Parametric Equivalents (Alternative Manufacturer, Full Power Rating) CMPZ5241B TR PBFREE from Central Semiconductor Corp maintains all electrical specifications of the original part with active product status and RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: MMBZ5241B-7-F This part is the direct equivalent from Diodes Incorporated with identical electrical specifications to the original MMBZ5241B-7. It maintains active product status and achieves ROHS3 compliance, making it the preferred choice for direct replacement in existing designs. Tape & Reel packaging is available with 2076 pieces in stock.

Alternative Selection for Tighter Tolerance Requirements: BZX84B11-TP When design specifications require tighter voltage tolerance (±2% vs. ±5%), lower impedance (20 Ω vs. 22 Ω), or reduced reverse leakage current (100 nA vs. 2 µA), BZX84B11-TP from Micro Commercial Co provides superior performance. This part maintains 350 mW power rating and full SOT-23-3 package compatibility. Product is active with ROHS3 compliance. Operating temperature range is -55 to 150°C, which is acceptable for most applications requiring -65°C minimum operation.

Alternative Selection for Tolerance-Matched Performance: BZX84C11-TP BZX84C11-TP matches the ±5% tolerance specification of the original part while offering improved impedance (20 Ω) and reverse leakage characteristics (100 nA). This part maintains 350 mW power rating and is available in high quantity (6241 pieces in stock) with active product status and ROHS3 compliance.

Reduced Power Rating Options: MMBZ5241BLT1G and SZMMBZ5241BLT1G These onsemi parts are suitable for applications where maximum power dissipation does not exceed 225 mW. Both maintain 11 V nominal voltage, ±5% tolerance, and full SOT-23-3 package compatibility. SZMMBZ5241BLT1G includes automotive qualification (AEC-Q101) for applications requiring automotive-grade components. Both are active with ROHS3 compliance and extensive inventory availability.

Full Specification Match Alternative: CMPZ5241B TR PBFREE Central Semiconductor Corp's CMPZ5241B TR PBFREE maintains all electrical specifications of the original MMBZ5241B-7, including 350 mW power rating, 22 Ω impedance, and 2 µA reverse leakage current. This part is active with ROHS3 compliance and 4150 pieces in stock.

Frequently Asked Questions (FAQ)

Q: Can MMBZ5241B-7-F be used as a direct replacement for MMBZ5241B-7? A: Yes. MMBZ5241B-7-F is the active production equivalent from Diodes Incorporated with identical electrical specifications (11 V, ±5%, 350 mW, SOT-23-3 package). The primary difference is improved product status (active vs. discontinued) and RoHS3 compliance.

Q: What is the difference between BZX84B11-TP and BZX84C11-TP? A: Both parts are from Micro Commercial Co with identical 11 V nominal voltage and 350 mW power rating in SOT-23-3 package. The primary difference is voltage tolerance: BZX84B11-TP specifies ±2% tolerance, while BZX84C11-TP specifies ±5% tolerance. Both offer improved impedance (20 Ω vs. 22 Ω) and reverse leakage current (100 nA vs. 2 µA) compared to the original part.

Q: Can I use MMBZ5241BLT1G or SZMMBZ5241BLT1G as replacements? A: These parts are suitable only for applications where maximum power dissipation does not exceed 225 mW. They maintain the 11 V nominal voltage, ±5% tolerance, and SOT-23-3 package compatibility. SZMMBZ5241BLT1G includes automotive qualification (AEC-Q101). If your application requires the full 350 mW power rating, these parts are not appropriate substitutes.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All substitute parts listed (MMBZ5241B-7-F, BZX84B11-TP, BZX84C11-TP, MMBZ5241BLT1G, SZMMBZ5241BLT1G, and CMPZ5241B TR PBFREE) are ROHS3 compliant. The original MMBZ5241B-7 is RoHS non-compliant.

Q: What is the operating temperature difference between the original part and Micro Commercial Co alternatives? A: The original MMBZ5241B-7 and all onsemi parts operate from -65°C to 150°C. Micro Commercial Co parts (BZX84B11-TP and BZX84C11-TP) operate from -55°C to 150°C. This 10°C difference in minimum operating temperature may be significant for applications requiring operation below -55°C.

Q: Are all substitute parts available in Tape & Reel packaging? A: Yes. All substitute parts are available in Tape & Reel (TR) packaging, suitable for automated assembly processes.

Q: What does the "SZ" prefix in SZMMBZ5241BLT1G indicate? A: The "SZ" prefix indicates automotive qualification. SZMMBZ5241BLT1G meets AEC-Q101 automotive standards and is suitable for automotive applications requiring qualified components.

Q: Can I substitute based on package type alone? A: No. While all parts use the SOT-23-3 package, electrical specifications must also match application requirements. Power dissipation rating, voltage tolerance, impedance, and reverse leakage current must be evaluated for each specific application.

Q: Is CMPZ5241B TR PBFREE a complete equivalent to MMBZ5241B-7? A: Yes. CMPZ5241B TR PBFREE from Central Semiconductor Corp maintains all electrical specifications of the original part: 11 V nominal voltage, ±5% tolerance, 350 mW power rating, 22 Ω impedance, 2 µA reverse leakage current, and SOT-23-3 package. It is active with ROHS3 compliance.