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onsemi MM5Z39VT5G
- Part No.:
- MM5Z39VT5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
MM5Z39VT5G.pdf
- Description:
- DIODE ZENER 39V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:3,913
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Product details
Overview
MM5Z39VT5G from onsemi is a 39 V ±5% Zener diode in SOD-523 package, rated for 500 mW steady-state power dissipation at 25 °C, with 130 Ω maximum Zener impedance at 1 mA test current and 0.05 μA reverse leakage at 31.2 V. It provides precision voltage regulation in space-constrained portable electronics.
For engineers reviewing the MM5Z39VT5G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5%), low-profile SOD-523 footprint (1.20 × 0.80 × 0.60 mm), Class 3 ESD rating (>16 kV HBM), thermal resistance (250 °C/W), and automotive-grade AEC-Q101 qualification when ordered as SZ variant.
Technical Context
This device operates as a two-terminal voltage reference by exploiting controlled reverse breakdown in a silicon PN junction. Its Zener voltage is specified at IZT = 1 mA for 39 V nominal devices, with temperature coefficient of +27.3 mV/°C and capacitance of 45 pF at 0 V and 1 MHz.
The SOD-523 package enables high-density PCB layout with minimal board area (1.20 mm × 0.80 mm) and low profile (0.60 mm height), while maintaining 260 °C reflow compatibility and MSL 1 moisture sensitivity level for standard assembly processes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 37 V to 41 V at IZT = 1 mA - defines regulated output range under nominal bias |
| Power Dissipation (PD) | 500 mW at TA = 25 °C - sets maximum continuous power handling on FR-4 board |
| Zener Impedance (ZZT) | 130 Ω max at IZT = 1 mA - determines regulation stiffness and AC ripple rejection |
| Reverse Leakage (IR) | 0.05 μA max at VR = 31.2 V - ensures minimal standby current in hold-off state |
| ESD Rating | Class 3 (>16 kV HBM) - supports robust handling in manual assembly and field environments |
| Package | SOD-523 (1.20 × 0.80 × 0.60 mm) - enables placement in ultra-compact mobile and wearable PCBs |
| Temperature Coefficient | +27.3 mV/°C - quantifies voltage drift over operating temperature range |
Pinout & Package
SOD-523 surface-mount package with cathode marked by polarity band; body dimensions 1.20 mm × 0.80 mm × 0.60 mm; lead finish 100% matte tin; qualified for 260 °C reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-biased during Zener operation |
| 2 (Non-banded End) | Anode | Connected to circuit ground or lower-potential reference; completes bias path |
Key Features
| Feature | Design Value |
|---|---|
| Standard Tolerance Zener Series | ±5% VZ tolerance - enables predictable clamping without custom trimming |
| Low-Profile SOD-523 Package | 0.60 mm height - allows stacking under shields or beneath connectors in slim form factors |
| High ESD Robustness | >16 kV HBM - eliminates need for external ESD protection in many I/O rail applications |
| Pb-Free and RoHS Compliant | 100% matte Sn lead finish - meets global environmental compliance without solderability trade-offs |
| AEC-Q101 Qualified Option | SZMM5Z39VT5G variant available - supports automotive infotainment and body control modules |
Applications
| Smartphone Power Rail Protection | Wearable Sensor Biasing |
|---|---|
Use Scenario: Clamping transient spikes on 3.3 V or 5 V system rails during hot-plug or ESD events in compact smartphone mainboards. IC Role / Device Role / Timing Role: Voltage clamp protecting PMIC outputs and application processor I/O banks. Use Value: Prevents latch-up or oxide damage using only 1.20 × 0.80 mm area, with <0.05 μA leakage preserving battery life. | Use Scenario: Providing stable 39 V bias for piezoelectric sensor excitation in hearable devices with strict height constraints. IC Role / Device Role / Timing Role: Precision DC reference source for analog front-end gain stages. Use Value: Delivers ±5% regulation accuracy and 45 pF capacitance compatible with high-frequency sensor drive signals. |
| Industrial IoT Node Voltage Reference | Automotive Cabin Controller Clamp |
Use Scenario: Establishing repeatable threshold for brown-out detection in battery-powered edge nodes operating from 36–42 V nominal input. IC Role / Device Role / Timing Role: Zener-based comparator reference with known temperature coefficient (+27.3 mV/°C). Use Value: Enables accurate low-power reset generation across −40 °C to +125 °C without trimming or calibration. | Use Scenario: Suppressing load-dump transients on 12 V CAN/LIN bus interfaces in automotive cabin modules. IC Role / Device Role / Timing Role: Secondary clamp limiting voltage to 41 V peak during ISO 7637-2 Pulse 5a events. Use Value: Complements primary TVS with fast response and tight 37–41 V window, qualified per AEC-Q101 when ordered as SZ variant. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C39 | 39 V ±5%, 300 mW rating, SOD-323 package (1.7 × 1.3 × 0.9 mm) | Larger footprint and lower power rating limit use in ultra-dense layouts | Select when legacy SOD-323 footprint compatibility is required and 500 mW derating margin is acceptable |
| MMSZ5242BT1G | 39 V ±5%, 500 mW, SOD-123 package (3.7 × 1.6 × 1.1 mm) | 3× larger board area and 2× greater height reduce suitability for wearables and thin smartphones | Choose for higher thermal mass in industrial controls where SOD-523 assembly yield is a concern |
Compared with BZX584-C39 and MMSZ5242BT1G, MM5Z39VT5G delivers identical 39 V regulation but in the smallest standardized Zener package, enabling highest PCB density and lowest profile-critical for next-generation portable and automotive modules where space and height are constrained.
Availability
MM5Z39VT5G is available at Aetrix Electronics and suitable for smartphone power rail protection, wearable sensor biasing, and industrial IoT node voltage reference requiring stable component supply and consistent SOD-523 packaging.
Supply support for MM5Z39VT5G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
onsemi (Semiconductor Components Industries, LLC) is a global supplier of energy-efficient semiconductor solutions, serving automotive, industrial, cloud, medical, and IoT markets with differentiated silicon and packaging technologies.
The MM5ZxxxT5G series is designed specifically for space-constrained voltage regulation and transient suppression in portable and automotive electronics, emphasizing miniaturization, reliability, and compliance with AEC-Q101 and RoHS standards.
FAQ
What is the Zener voltage tolerance of MM5Z39VT5G?
The MM5Z39VT5G has a Zener voltage tolerance of ±5%, with a specified range of 37 V to 41 V measured at IZT = 1 mA and TA = 25 °C. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet (Rev. 19, April 2025). The MM5Z39VT5G maintains this tolerance across its qualified operating temperature range.
Does MM5Z39VT5G meet automotive qualification standards?
The MM5Z39VT5G itself is not automotive-qualified; however, its automotive-grade variant SZMM5Z39VT5G is AEC-Q101 qualified and PPAP capable. The base MM5Z39VT5G shares identical electrical specs and SOD-523 packaging but lacks the extended testing and traceability required for automotive use. For automotive applications, specify the SZ prefix version of MM5Z39VT5G.
What is the maximum reverse leakage current for MM5Z39VT5G?
The maximum reverse leakage current for MM5Z39VT5G is 0.05 μA at VR = 31.2 V and TA = 25 °C, as specified in the Electrical Characteristics table. This low leakage supports long battery life in always-on portable systems. The MM5Z39VT5G maintains this specification across its full storage temperature range of −65 °C to +150 °C.
Can MM5Z39VT5G be used in high-density PCB designs?
Yes, MM5Z39VT5G is explicitly designed for high-density PCBs, housed in the SOD-523 package measuring just 1.20 mm × 0.80 mm × 0.60 mm. Its small outline and low profile allow placement beneath connectors or under RF shields. The MM5Z39VT5G also supports standard 260 °C reflow and MSL 1 handling, ensuring manufacturability in automated SMT lines.
What is the Zener impedance of MM5Z39VT5G at its test current?
The MM5Z39VT5G has a maximum Zener impedance (ZZT) of 130 Ω at IZT = 1 mA and TA = 25 °C. This value reflects dynamic resistance in the breakdown region and directly impacts regulation accuracy under varying load conditions. The MM5Z39VT5G's impedance remains stable across its operational temperature range, supporting consistent performance in portable and automotive environments.
MM5Z39VT5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- MM5ZxxxT1G
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 39 V
- Tolerance:
- ±5.13%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 130 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 27.3 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
MM5Z39VT5G FAQ
1.How can I place an order for MM5Z39VT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5Z39VT5G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MM5Z39VT5G reliable?
The price and inventory of MM5Z39VT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5Z39VT5G is usually 5 days.
3.What payment methods are accepted for MM5Z39VT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5Z39VT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5Z39VT5G?
MM5Z39VT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5Z39VT5G order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MM5Z39VT5G?
For technical support, including MM5Z39VT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5Z39VT5G requirements.
6.How does Aetrix verify that MM5Z39VT5G is sourced from the original manufacturer or authorized distributors?
All MM5Z39VT5G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MM5Z39VT5G meets industry standards.
7.What is the process for return or replacement of MM5Z39VT5G?
All MM5Z39VT5G units undergo pre-shipment inspection (PSI). If there is an issue with MM5Z39VT5G, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MM5Z39VT5G part is unused and in its original packaging.
Return procedure for MM5Z39VT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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