MM3Z33VT1GX Equivalent & Substitute Parts

Part Overview

The MM3Z33VT1GX is a surface mount Zener diode voltage regulator manufactured by Nexperia USA Inc. This component operates at a nominal Zener voltage of 33 V with a maximum power dissipation of 300 mW and is housed in an SOD-323 package. The part is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part number becomes unavailable or when specific performance characteristics are required for particular applications.

Substiute Parts

MM3Z33VT1GX

Nexperia USA Inc.In Stock: 3361MM3Z33VT1GX Datasheet

Current PartRFQ

BZX384-A33-QX

Nexperia USA Inc.In Stock: 4146BZX384-A33-QX Datasheet

Parametric EquivalentRFQ

SZMM3Z33VT1GX

Nexperia USA Inc.In Stock: 31093SZMM3Z33VT1GX Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MM3Z33VT1GX are identified based on strict electrical and mechanical parameter matching within the Zener diode category. The substitution logic is based on the following critical parameters:

Electrical Parameters:

• Voltage - Zener (Nom): 33 V (exact match required)
• Power - Max: 300 mW (exact match required)
• Impedance (Max): 80 Ohms (exact match required)
• Current - Reverse Leakage @ Vr: 50 nA @ 23.1 V (exact match required)
• Operating Temperature: 150°C (TJ) (exact match required)

Mechanical Parameters:

• Package / Case: SC-76, SOD-323 (exact match required)
• Mounting Type: Surface Mount (exact match required)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Substitute parts may vary in tolerance specification and forward voltage characteristics while maintaining full functional equivalence. All identified substitutes are manufactured by Nexperia USA Inc. and maintain Active product status.

Parameter Comparison

Engineering Selection Recommendations

All three parts—MM3Z33VT1GX, BZX384-A33-QX, and SZMM3Z33VT1GX—are Active products manufactured by Nexperia USA Inc. and are fully RoHS3 compliant. All parts are housed in identical SOD-323 packages and support surface mount assembly processes.

MM3Z33VT1GX is the primary part number with standard ±5% tolerance and forward voltage specification of 1.1 V @ 100 mA.

BZX384-A33-QX is a parametric equivalent with tighter ±1% tolerance and carries AEC-Q101 automotive qualification. This part is suitable for applications requiring enhanced voltage accuracy and automotive-grade reliability. The forward voltage specification differs at 900 mV @ 10 mA.

SZMM3Z33VT1GX is a parametric equivalent with ±5% tolerance matching the primary part and identical forward voltage characteristics. This part carries AEC-Q101 automotive qualification and is suitable for automotive applications requiring the same electrical performance as the primary part.

Selection between these parts depends on tolerance requirements, automotive qualification needs, and application-specific forward voltage operating points. All three parts maintain identical core electrical parameters for Zener voltage regulation functionality.

Frequently Asked Questions (FAQ)

Q: Can BZX384-A33-QX be used as a direct replacement for MM3Z33VT1GX?

A: Yes. Both parts share identical Zener voltage (33 V), maximum power (300 mW), impedance (80 Ohms), reverse leakage current, operating temperature, and package specifications (SOD-323). The primary difference is tolerance specification (±1% versus ±5%) and automotive qualification (AEC-Q101). BZX384-A33-QX provides tighter voltage accuracy and automotive-grade reliability.

Q: Can SZMM3Z33VT1GX be used as a direct replacement for MM3Z33VT1GX?

A: Yes. Both parts are electrically and mechanically identical with matching ±5% tolerance, identical forward voltage characteristics, and identical Zener voltage, power, impedance, and package specifications. SZMM3Z33VT1GX includes AEC-Q101 automotive qualification.

Q: What is the significance of the ±1% tolerance in BZX384-A33-QX compared to ±5% in MM3Z33VT1GX?

A: Tolerance specification defines the allowable deviation from the nominal 33 V Zener voltage. BZX384-A33-QX maintains Zener voltage within ±1% (31.67 V to 33.33 V), while MM3Z33VT1GX maintains it within ±5% (31.35 V to 34.65 V). Applications requiring precise voltage regulation benefit from the tighter tolerance of BZX384-A33-QX.

Q: Are all three parts suitable for automotive applications?

A: MM3Z33VT1GX is an active product without specified automotive qualification. BZX384-A33-QX and SZMM3Z33VT1GX both carry AEC-Q101 automotive qualification, making them suitable for automotive applications requiring qualified components.

Q: Do all three parts use the same package?

A: Yes. All three parts use the SC-76, SOD-323 surface mount package, ensuring identical PCB footprint and assembly compatibility.

Q: What is the difference in forward voltage specifications between the parts?

A: MM3Z33VT1GX and SZMM3Z33VT1GX specify 1.1 V @ 100 mA forward voltage. BZX384-A33-QX specifies 900 mV @ 10 mA. These specifications are measured at different current levels and represent the same diode characteristic measured under different test conditions.

Q: Are all parts RoHS3 compliant?

A: Yes. All three parts are RoHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.