MMBZ15VDL-7-F Equivalent & Substitute Parts

Part Overview

The MMBZ15VDL-7-F is a transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 12.8V reverse standoff voltage with a 21.2V maximum clamping voltage and 1.9A peak pulse current capability in a compact SOT-23-3 package. The part is currently listed as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued system design and production support.

Substiute Parts

MMBZ15VDL-7-F

Diodes IncorporatedIn Stock: 486454MMBZ15VDL-7-F Datasheet

Current PartRFQ

MMBZ15VDLT1G

onsemiIn Stock: 65186MMBZ15VDLT1G Datasheet

DirectRFQ

SZMMBZ15VDLT3G

onsemiIn Stock: 11153SZMMBZ15VDLT3G Datasheet

DirectRFQ

MMBZ15VDL,215

Nexperia USA Inc.In Stock: 3877MMBZ15VDL,215 Datasheet

MFR RecommendedRFQ

MMBZ15VDLT3G

onsemiIn Stock: 55154MMBZ15VDLT3G Datasheet

MFR RecommendedRFQ

SDC15.TCT

Semtech CorporationIn Stock: 40139SDC15.TCT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMBZ15VDL-7-F is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 12.8V
• Voltage - Breakdown (Min): 14.3V
• Voltage - Clamping (Max) @ Ipp: 21.2V
• Current - Peak Pulse (10/1000µs): 1.9A
• Power - Peak Pulse: 40W
• Package / Case: TO-236-3, SC-59, SOT-23-3
• Type: Zener, Unidirectional (2 channels)
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

All identified substitute parts maintain these core electrical and mechanical specifications. Variations in operating temperature range, packaging format (Cut Tape vs. Tape & Reel), and optional automotive qualifications do not affect functional equivalence for standard applications.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain full electrical equivalence to the MMBZ15VDL-7-F across voltage, current, and power specifications. Selection among active alternatives should be based on the following factors:

Standard Applications (Non-Automotive): MMBZ15VDLT1G (onsemi) and MMBZ15VDLT3G (onsemi) are direct functional replacements with active product status and identical electrical performance. Both are ROHS3 compliant with MSL 1 rating. MMBZ15VDLT1G is available in Cut Tape packaging, while MMBZ15VDLT3G is supplied in Tape & Reel format.

Automotive Applications: SZMMBZ15VDLT3G (onsemi) and MMBZ15VDL,215 (Nexperia) are qualified to AEC-Q101 automotive standards and maintain all core electrical specifications. These parts are suitable for automotive-grade designs requiring formal qualification documentation.

Enhanced Pulse Handling: SDC15.TCT (Semtech Corporation) provides superior peak pulse current (10A at 8/20µs) and power dissipation (300W) compared to the original 1.9A/40W specification. This part features bidirectional topology (1 channel) rather than unidirectional (2 channels). Selection of this part requires confirmation that the application circuit topology is compatible with bidirectional suppression characteristics.

Temperature Considerations: The original MMBZ15VDL-7-F operates to -65°C minimum junction temperature. Most active substitutes operate to -55°C minimum. Applications requiring -65°C operation should confirm thermal requirements with the selected substitute manufacturer.

Frequently Asked Questions (FAQ)

Q: Can MMBZ15VDLT1G replace MMBZ15VDL-7-F directly? A: Yes. MMBZ15VDLT1G maintains identical voltage (12.8V standoff, 21.2V clamp), current (1.9A peak pulse), and power (40W) specifications. Both are ROHS3 compliant with MSL 1 rating. The primary difference is product status (Active vs. Obsolete) and packaging format (Cut Tape vs. standard reel).

Q: What is the difference between MMBZ15VDLT3G and SZMMBZ15VDLT3G? A: Both parts are manufactured by onsemi with identical electrical specifications. SZMMBZ15VDLT3G carries AEC-Q101 automotive qualification and is designated for automotive-grade applications. MMBZ15VDLT3G is suitable for general-purpose applications. Both are supplied in Tape & Reel packaging.

Q: Why does SDC15.TCT have different current and power ratings? A: SDC15.TCT is specified for 10A peak pulse current (8/20µs waveform) and 300W power dissipation, compared to 1.9A (10/1000µs) and 40W for the original part. This reflects different pulse waveform testing standards. SDC15.TCT also features bidirectional topology (1 channel) versus unidirectional (2 channels). Substitution requires circuit topology verification.

Q: Are all substitutes available in SOT-23-3 package? A: Yes. All listed substitutes use TO-236-3, SC-59, or SOT-23-3 package designations, which are mechanically and electrically equivalent. Supplier device package designations may vary (SOT-23-3 vs. TO-236AB), but physical footprint and pin configuration remain identical.

Q: What is the minimum operating temperature difference between the original and substitutes? A: The original MMBZ15VDL-7-F operates to -65°C (TJ). Most active substitutes operate to -55°C (TJ), representing a 10°C difference. SDC15.TCT operates to -55°C (TJ). Applications requiring operation below -55°C should confirm thermal specifications with the selected manufacturer.

Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental compliance profile.