MM3Z2V7ST1 Equivalent & Substitute Parts

Part Overview

The MM3Z2V7ST1 is a Zener diode rated at 2.7 V nominal with 200 mW maximum power dissipation in a surface mount SOD-323 package. Manufactured by onsemi, this component is classified as obsolete product status. Due to its obsolete designation, locating direct replacements from current production inventory requires evaluation of functionally equivalent alternatives that maintain the same electrical specifications and mechanical form factor.

Substiute Parts

MM3Z2V7ST1

onsemiIn Stock: 18500MM3Z2V7ST1 Datasheet

Current PartRFQ

MM3Z2V7T1G

onsemiIn Stock: 18840MM3Z2V7T1G Datasheet

DirectRFQ

BZX384-C2V7,115

Nexperia USA Inc.In Stock: 66083BZX384-C2V7,115 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MM3Z2V7ST1 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Zener voltage nominal value: 2.7 V
• Operating temperature range: -65°C ~ 150°C
• Impedance (Max): 100 Ohms
• Package / Case: SOD-323

Acceptable Variation Parameters:

• Power rating: Substitute parts may exceed 200 mW maximum (higher power rating is acceptable for this application)
• Tolerance: Substitute parts may have different tolerance specifications (±4%, ±5%, ±7%)
• Reverse leakage current: Substitute parts may have lower leakage specifications (improved performance)
• Forward voltage: Substitute parts may have different forward voltage characteristics

Substitute parts MM3Z2V7T1G and BZX384-C2V7,115 maintain identical zener voltage, operating temperature range, impedance, and SOD-323 package specifications. Both are active product status components with higher power ratings (300 mW) and improved RoHS compliance.

Parameter Comparison

Engineering Selection Recommendations

MM3Z2V7T1G (onsemi): This substitute maintains manufacturer continuity with the original MM3Z2V7ST1, sharing the same base product number MM3Z2. The part is active product status with ROHS3 compliance. The 300 mW power rating provides increased thermal margin over the 200 mW original specification. Reverse leakage current is reduced to 20 µA at 1 V, indicating improved device characteristics. Forward voltage specification remains identical at 900 mV @ 10 mA. Tolerance specification is ±7% compared to the original ±4%.

BZX384-C2V7,115 (Nexperia USA Inc.): This substitute is from the BZX384 series and provides cross-manufacturer compatibility. The part is active product status with ROHS3 compliance. The 300 mW power rating and 20 µA reverse leakage current match the MM3Z2V7T1G specifications. Tolerance specification is ±5%, positioned between the original ±4% and the onsemi substitute ±7%. Forward voltage is specified at 1.1 V @ 100 mA, differing from the original specification measured at 10 mA. All critical parameters including zener voltage, operating temperature range, impedance, and SOD-323 package are maintained.

Both substitutes are suitable for applications where the original MM3Z2V7ST1 is specified, with the selection between them dependent on manufacturer preference, supply chain considerations, and tolerance requirements.

Frequently Asked Questions (FAQ)

Q: Can MM3Z2V7T1G directly replace MM3Z2V7ST1 in existing designs?

A: Yes. Both parts maintain identical zener voltage (2.7 V), operating temperature range (-65°C ~ 150°C), impedance (100 Ohms maximum), and SOD-323 package specifications. The MM3Z2V7T1G provides higher power rating (300 mW vs. 200 mW) and lower reverse leakage current (20 µA vs. 100 µA), representing improved performance characteristics.

Q: What is the difference between ±4% and ±7% tolerance specifications?

A: Tolerance defines the allowable deviation of the zener voltage from the nominal 2.7 V specification. The original MM3Z2V7ST1 specifies ±4% tolerance, resulting in a zener voltage range of 2.592 V to 2.808 V. The MM3Z2V7T1G substitute specifies ±7% tolerance, resulting in a range of 2.511 V to 2.889 V. Applications requiring tighter voltage regulation should account for this wider tolerance band.

Q: Is the BZX384-C2V7,115 compatible with the original MM3Z2V7ST1 footprint?

A: Yes. Both parts use the SOD-323 package (SC-76 case), which is a standardized surface mount package. Footprint and land pattern compatibility are maintained. The BZX384-C2V7,115 is a cross-manufacturer substitute from Nexperia USA Inc. and functions as an electrical equivalent.

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

A: The MM3Z2V7T1G and BZX384-C2V7,115 are rated at 300 mW compared to the original 200 mW specification. Higher power rating indicates improved thermal capability and does not negatively impact circuit performance. Applications designed for 200 mW operation will function within the thermal envelope of 300 mW-rated devices.

Q: What is the significance of RoHS3 compliance on the substitute parts?

A: The original MM3Z2V7ST1 is RoHS non-compliant. Both substitute parts (MM3Z2V7T1G and BZX384-C2V7,115) are ROHS3 compliant, indicating they meet current environmental and hazardous substance restrictions. This is relevant for applications subject to RoHS regulations or customer requirements.

Q: How does reverse leakage current affect circuit performance?

A: Reverse leakage current is the small current flowing through the zener diode when reverse-biased below the zener voltage. The original MM3Z2V7ST1 specifies 100 µA @ 1 V, while substitutes specify 20 µA @ 1 V. Lower leakage current in substitute parts indicates improved device quality and reduced power consumption in standby conditions.

Q: Are there packaging differences between the substitute parts?

A: The original MM3Z2V7ST1 is supplied in standard packaging. The MM3Z2V7T1G is supplied in Tape & Reel (TR) packaging. The BZX384-C2V7,115 is also supplied in Tape & Reel (TR) packaging. Tape & Reel format is standard for automated assembly processes and does not affect component electrical characteristics or functionality.