MAZ8240GML Equivalent & Substitute Parts

Part Overview

The MAZ8240GML is a 24 V Zener diode rated at 150 mW, manufactured by Panasonic Electronic Components in the SMini2-F3 surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates with ±6% voltage tolerance and is suitable for voltage regulation and protection applications in surface mount assemblies.

Key Parameters

Parameter	Value
Voltage - Zener (Nom)	24 V
Power - Max	150 mW
Tolerance	±6%
Impedance (Max)	100 Ohms
Current - Reverse Leakage @ Vr	50 nA @ 19 V
Voltage - Forward (Max) @ If	1 V @ 10 mA
Mounting Type	Surface Mount
Package / Case	SC-90, SOD-323F
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the MAZ8240GML are qualified based on the following electrical and mechanical parameters:

Primary Matching Criteria:

Zener voltage: 24 V nominal
Mounting type: Surface mount
Moisture sensitivity level: 1 (Unlimited)
Reverse leakage current: 50 nA specification

Substitution Logic:

All three substitute parts maintain the 24 V zener voltage specification and surface mount configuration. However, substitutes differ in power dissipation ratings and package types. The BZX585-B24,115 and BZX585-C24,115 are rated at 300 mW (double the original 150 mW), while the BZX84J-B24,115 is rated at 550 mW. These higher power ratings are acceptable in substitution as they provide enhanced thermal capability without affecting voltage regulation performance.

Package compatibility varies: BZX585 series uses SOD-523 package, while BZX84J-B24,115 uses SOD-323F package (matching the original MAZ8240GML package type). Impedance values differ across substitutes, with lower impedance values (30–70 Ohms) compared to the original 100 Ohms specification, resulting in improved voltage stability.

Parameter Comparison

Parameter	MAZ8240GML	BZX585-B24,115	BZX585-C24,115	BZX84J-B24,115
Manufacturer	Panasonic Electronic Components	Nexperia USA Inc.	NXP Semiconductors	Nexperia USA Inc.
Voltage - Zener (Nom)	24 V	24 V	24 V	24 V
Tolerance	±6%	±2%	±5%	±2%
Power - Max	150 mW	300 mW	300 mW	550 mW
Impedance (Max)	100 Ohms	70 Ohms	70 Ohms	30 Ohms
Current - Reverse Leakage @ Vr	50 nA @ 19 V	50 nA @ 16.8 V	50 nA @ 16.8 V	50 nA @ 16.8 V
Voltage - Forward (Max) @ If	1 V @ 10 mA	1.1 V @ 100 mA	1.1 V @ 100 mA	1.1 V @ 100 mA
Operating Temperature	Not specified	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SC-90, SOD-323F	SC-79, SOD-523	SC-79, SOD-523	SC-90, SOD-323F
Product Status	Obsolete	Active	Active	Active
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	Not specified	ROHS3 Compliant	Not specified	ROHS3 Compliant

Engineering Selection Recommendations

BZX84J-B24,115 (Recommended for Direct Package Replacement)

The BZX84J-B24,115 is the optimal substitute when package compatibility is a primary design constraint. This part maintains the SOD-323F package identical to the original MAZ8240GML, enabling direct PCB layout compatibility without redesign. The BZX84J-B24,115 is active in production status with AEC-Q101 automotive qualification and ROHS3 compliance. The 550 mW power rating provides significant thermal margin over the original 150 mW specification. Impedance of 30 Ohms improves voltage regulation performance compared to the original 100 Ohms. Tolerance of ±2% exceeds the original ±6% specification.

BZX585-B24,115 (Automotive-Grade Alternative)

The BZX585-B24,115 offers automotive-grade qualification (AEC-Q100) with active production status and ROHS3 compliance. This part features 300 mW power rating and 70 Ohms impedance. The SOD-523 package requires PCB layout modification. Tolerance of ±2% provides tighter voltage control than the original specification.

BZX585-C24,115 (High-Volume Alternative)

The BZX585-C24,115 is available in the highest inventory quantity (252,265 pieces) with active production status. This part maintains 24 V zener voltage with ±5% tolerance, 300 mW power rating, and 70 Ohms impedance. The SOD-523 package requires PCB layout modification. REACH compliance is confirmed.

Frequently Asked Questions (FAQ)

Q: Can the BZX84J-B24,115 be used as a direct replacement for the MAZ8240GML without PCB modifications?

A: Yes. The BZX84J-B24,115 uses the identical SOD-323F package (SC-90) as the MAZ8240GML, allowing direct PCB footprint compatibility without layout changes.

Q: Why do the substitute parts have higher power ratings than the original MAZ8240GML?

A: Higher power ratings (300 mW and 550 mW versus 150 mW) provide increased thermal capability and design margin. These ratings do not affect voltage regulation performance and are acceptable in substitution applications where the original 150 mW rating was sufficient.

Q: What is the impact of lower impedance values in substitute parts?

A: Lower impedance values (30–70 Ohms versus 100 Ohms) result in improved voltage regulation stability and reduced output impedance. This enhancement is beneficial for circuit performance and does not create compatibility issues.

Q: Are the BZX585 series parts suitable for automotive applications?

A: The BZX585-B24,115 carries AEC-Q100 automotive qualification. The BZX585-C24,115 does not specify automotive qualification in the provided data. The BZX84J-B24,115 carries AEC-Q101 automotive qualification.

Q: What is the difference between the BZX585-B24,115 and BZX585-C24,115?

A: Both parts use the SOD-523 package and 300 mW power rating. The primary difference is tolerance: BZX585-B24,115 is ±2% while BZX585-C24,115 is ±5%. The BZX585-C24,115 has significantly higher inventory availability (252,265 pieces versus 3,768 pieces).

Q: Do all substitute parts meet moisture sensitivity requirements?

A: Yes. All substitute parts are rated MSL 1 (Unlimited), matching the original MAZ8240GML specification.

Q: What is the operating temperature range for substitute parts?

A: All three substitute parts operate across -65°C to 150°C. The original MAZ8240GML does not specify an operating temperature range in the provided data.

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