MM3Z68VT1GX Equivalent & Substitute Parts

Part Overview

The MM3Z68VT1GX is a surface mount Zener diode manufactured by Nexperia USA Inc., classified as a voltage regulator diode in the MM3Z series. This component operates at a nominal Zener voltage of 68 V with a maximum power dissipation of 300 mW and is housed in an SOD-323 package. The part maintains Active product status and is RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter set. Alternative models may be required due to inventory availability, specific tolerance requirements, or automotive qualification needs.

Substiute Parts

MM3Z68VT1GX

Nexperia USA Inc.In Stock: 3515MM3Z68VT1GX Datasheet

Current PartRFQ

BZX384-A68-QX

Nexperia USA Inc.In Stock: 4038BZX384-A68-QX Datasheet

Parametric EquivalentRFQ

SZMM3Z68VT1GX

Nexperia USA Inc.In Stock: 27546SZMM3Z68VT1GX Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MM3Z68VT1GX is determined by the following critical parameters:

Electrical Equivalence Criteria:

• Nominal Zener voltage of 68 V
• Maximum power dissipation of 300 mW
• Maximum impedance of 240 Ohms
• Reverse leakage current of 50 nA @ 47.6 V
• Operating temperature rating of 150°C (TJ)

Mechanical Compatibility Criteria:

• Surface mount packaging in SOD-323 (SC-76) case
• Tape & Reel (TR) packaging format

Compliance Requirements:

• RoHS3 compliance
• MSL 1 (Unlimited) moisture sensitivity rating
• REACH Unaffected status

Substitute parts must satisfy all electrical parameters within the specified tolerances and maintain identical mechanical and environmental compliance characteristics. Tolerance variations (±5% versus ±1%) and forward voltage specifications do not preclude substitution when nominal Zener voltage and power ratings remain constant.

Parameter Comparison

Engineering Selection Recommendations

MM3Z68VT1GX (Primary Part)

The MM3Z68VT1GX is suitable for general-purpose voltage regulation applications requiring a 68 V Zener diode with ±5% tolerance. This part maintains Active status and full RoHS3 compliance. Selection is appropriate for applications where standard tolerance specifications are acceptable and automotive qualification is not required.

BZX384-A68-QX (Substitute - Tighter Tolerance)

The BZX384-A68-QX provides identical electrical performance with enhanced tolerance specification (±1% versus ±5%). This part carries AEC-Q101 automotive qualification and is suitable for applications requiring stricter Zener voltage accuracy. The forward voltage specification differs (900 mV @ 10 mA versus 1.1 V @ 100 mA), reflecting measurement at different current levels; both parts maintain equivalent operational characteristics at nominal conditions. This substitute is appropriate for automotive applications or designs requiring tighter voltage regulation.

SZMM3Z68VT1GX (Substitute - Automotive Grade)

The SZMM3Z68VT1GX maintains identical electrical specifications to the primary part (68 V, ±5% tolerance, 300 mW) and includes AEC-Q101 automotive qualification. This part is suitable for automotive applications requiring the same tolerance and performance characteristics as the MM3Z68VT1GX with added automotive-grade reliability assurance.

All three parts are manufactured by Nexperia USA Inc., maintain Active product status, and are fully RoHS3 compliant with unlimited moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can BZX384-A68-QX replace MM3Z68VT1GX in all applications?

A: Yes. The BZX384-A68-QX maintains all critical electrical parameters (68 V nominal Zener voltage, 300 mW power rating, 240 Ohms maximum impedance, 50 nA reverse leakage) and identical SOD-323 packaging. The tighter ±1% tolerance provides enhanced voltage accuracy. Forward voltage specifications differ due to measurement conditions but do not affect substitution compatibility.

Q: What is the difference between MM3Z68VT1GX and SZMM3Z68VT1GX?

A: Both parts share identical electrical specifications (68 V, ±5% tolerance, 300 mW, SOD-323 package). The SZMM3Z68VT1GX includes AEC-Q101 automotive qualification, making it suitable for automotive applications. The MM3Z68VT1GX is appropriate for general industrial and commercial applications.

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

A: Yes. All three parts are supplied in Tape & Reel (TR) format with SOD-323 (SC-76) surface mount packaging, ensuring identical PCB assembly compatibility.

Q: Does tolerance difference affect circuit performance?

A: Tolerance differences (±5% versus ±1%) affect the acceptable range of Zener voltage variation. The ±1% tolerance of BZX384-A68-QX provides tighter voltage regulation. Selection depends on circuit requirements for voltage accuracy. Both tolerances maintain the 68 V nominal specification.

Q: Are all parts RoHS3 compliant?

A: Yes. MM3Z68VT1GX, BZX384-A68-QX, and SZMM3Z68VT1GX are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating and REACH Unaffected status.

Q: Which part should be selected for automotive applications?

A: Both BZX384-A68-QX and SZMM3Z68VT1GX carry AEC-Q101 automotive qualification. BZX384-A68-QX offers tighter tolerance (±1%), while SZMM3Z68VT1GX maintains the ±5% tolerance of the primary part. Selection depends on specific voltage accuracy requirements.