MM3Z75VT1GX Equivalent & Substitute Parts

Part Overview

The MM3Z75VT1GX is a 75 V Zener diode manufactured by Nexperia USA Inc., classified as a voltage regulator diode in the surface mount SOD-323 package. This component is designed for voltage regulation and protection applications requiring 300 mW power dissipation capability. The part maintains Active product status with 3657 units in current inventory stock.

Substitute parts are identified when equivalent electrical parameters and mechanical specifications align within the allowed tolerance ranges for this diode category. Substitution becomes necessary when the primary part number reaches end-of-life status, inventory constraints occur, or design requirements permit tolerance variations that alternative qualified parts can satisfy.

Substiute Parts

MM3Z75VT1GX

Nexperia USA Inc.In Stock: 3725MM3Z75VT1GX Datasheet

Current PartRFQ

BZX384-A75-QX

Nexperia USA Inc.In Stock: 3539BZX384-A75-QX Datasheet

Parametric EquivalentRFQ

BZX384-B75-QF

Nexperia USA Inc.In Stock: 10457BZX384-B75-QF Datasheet

Parametric EquivalentRFQ

SZMM3Z75VT1GX

Nexperia USA Inc.In Stock: 1523SZMM3Z75VT1GX Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the MM3Z75VT1GX is determined by the following critical parameters that must remain constant across all equivalent parts:

Fixed Parameters (No Variation Permitted):

• Voltage - Zener (Nominal): 75 V
• Power - Maximum: 300 mW
• Impedance (Maximum): 255 Ohms
• Current - Reverse Leakage @ Vr: 50 nA @ 52.5 V
• Operating Temperature (Junction): 150°C
• Package / Case: SC-76, SOD-323
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

Variable Parameters (Within Allowed Range):

• Tolerance: ±1% to ±5%
• Voltage - Forward (Maximum) @ If: 900 mV @ 10 mA to 1.1 V @ 100 mA
• Grade and Qualification: Standard or Automotive with AEC-Q100/AEC-Q101

All identified substitute parts maintain identical core electrical and mechanical specifications while permitting tolerance and qualification variations that do not affect functional performance in voltage regulation applications.

Parameter Comparison

Engineering Selection Recommendations

MM3Z75VT1GX (Primary Part) The MM3Z75VT1GX is the baseline reference component with Active product status and standard-grade classification. This part is suitable for general-purpose voltage regulation applications where automotive qualification is not required. Current inventory of 3657 units supports immediate procurement.

BZX384-A75-QX (Tighter Tolerance Substitute) The BZX384-A75-QX provides ±1% tolerance specification compared to the ±5% tolerance of the primary part. This substitute carries Automotive grade designation with AEC-Q101 qualification. Selection of this part is appropriate when tighter voltage regulation accuracy is required or when automotive-qualified components are mandated by design specifications. Inventory availability is 3455 units.

BZX384-B75-QF (Automotive-Qualified Substitute) The BZX384-B75-QF maintains ±2% tolerance with Automotive grade and AEC-Q100 qualification. This part provides a balance between tolerance tightness and automotive qualification requirements. The highest inventory level of 10387 units ensures sustained availability. This substitute is selected when automotive qualification is required without the tighter tolerance specification of the AEC-Q101 variant.

SZMM3Z75VT1GX (Automotive-Qualified Equivalent) The SZMM3Z75VT1GX matches the ±5% tolerance of the primary part while adding Automotive grade and AEC-Q101 qualification. This substitute is appropriate when the original tolerance specification is acceptable but automotive qualification becomes necessary. Inventory of 1426 units is available.

All substitute parts maintain identical core electrical performance parameters and SOD-323 package specifications, ensuring direct functional equivalence in voltage regulation circuits.

Frequently Asked Questions (FAQ)

Q: Can BZX384-A75-QX replace MM3Z75VT1GX in all applications?

A: BZX384-A75-QX is electrically equivalent with identical zener voltage, power rating, impedance, and leakage current specifications. The ±1% tolerance is tighter than the ±5% specification of MM3Z75VT1GX, providing improved voltage regulation accuracy. Both parts use the SOD-323 package. Substitution is valid when the tighter tolerance does not create design conflicts. The automotive qualification of BZX384-A75-QX is an additional feature not present in the standard-grade MM3Z75VT1GX.

Q: What is the difference between BZX384-B75-QF and BZX384-A75-QX?

A: Both parts are automotive-qualified Zener diodes with 75 V nominal voltage and 300 mW power rating. BZX384-B75-QF carries ±2% tolerance with AEC-Q100 qualification, while BZX384-A75-QX carries ±1% tolerance with AEC-Q101 qualification. The forward voltage specification differs: BZX384-A75-QX is rated at 900 mV @ 10 mA, while BZX384-B75-QF is rated at 1.1 V @ 100 mA. Selection depends on whether tighter tolerance or specific AEC qualification level is required.

Q: Is SZMM3Z75VT1GX a direct replacement for MM3Z75VT1GX?

A: SZMM3Z75VT1GX is a direct functional replacement with identical electrical parameters: 75 V zener voltage, ±5% tolerance, 300 mW power rating, and SOD-323 package. The primary difference is that SZMM3Z75VT1GX carries Automotive grade with AEC-Q101 qualification, while MM3Z75VT1GX is standard-grade. Substitution is valid when automotive qualification becomes a design requirement.

Q: Are all substitute parts available in the same packaging?

A: All substitute parts use the SC-76, SOD-323 surface mount package. Mechanical compatibility is identical across MM3Z75VT1GX, BZX384-A75-QX, BZX384-B75-QF, and SZMM3Z75VT1GX. No PCB layout modifications are required when substituting between these parts.

Q: What compliance certifications apply to all parts?

A: All four parts are ROHS3 Compliant, REACH Unaffected, and classified under ECCN EAR99. Moisture Sensitivity Level is 1 (Unlimited) for all parts. Automotive-qualified variants (BZX384-A75-QX, BZX384-B75-QF, SZMM3Z75VT1GX) carry AEC-Q100 or AEC-Q101 qualification as specified.

Q: Can tolerance differences affect circuit performance?

A: Tolerance differences between ±1%, ±2%, and ±5% affect the voltage regulation accuracy of the Zener diode. Applications requiring precise voltage reference should specify the tighter tolerance variant. Applications with broader voltage tolerance windows can use any of the available substitutes. The core zener voltage of 75 V is identical across all parts.