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onsemi MM5Z33VT1G
- Part No.:
- MM5Z33VT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
MM5Z33VT1G.pdf
- Description:
- DIODE ZENER 33V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:12,094
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Product details
Overview
MM5Z33VT1G from onsemi is a 33 V ±5% Zener diode in SOD-523 package, rated for 500 mW steady-state power dissipation at 25 °C, with 80 Ω maximum Zener impedance at 1 mA test current and 0.05 μA reverse leakage at 27.4 V. It provides precision voltage regulation in space-constrained portable electronics such as smartphone power rails and USB interface protection.
For engineers reviewing the MM5Z33VT1G datasheet, pinout, applications, or equivalent options, key selection criteria include its 33 V nominal Zener voltage, ±5% tolerance, 80 Ω dynamic impedance at IZK = 1 mA, Class 3 ESD rating (>16 kV HBM), and SOD-523 footprint compatibility with high-density PCB layouts.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to clamp voltage at 33 V within ±5% tolerance. Its thermal resistance (RJA = 250 °C/W) and 500 mW power rating define safe operating limits on FR-4 boards with 1 cm² copper pad.
The MM5Z33VT1G exhibits a temperature coefficient of +23.2 mV/°C at IZT, enabling predictable drift compensation in stable reference designs. Its 70 pF capacitance at 0 V and 1 MHz supports low-noise signal path applications without introducing excessive AC loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 33 V nominal, 31–35 V min/max range at IZT = 1 mA - defines clamping threshold for overvoltage protection circuits |
| Tolerance | ±5% - ensures consistent regulation across production lots without post-assembly calibration |
| Power Rating (PD) | 500 mW at TA = 25 °C, derated 4.0 mW/°C above - sets maximum continuous dissipation on standard FR-4 PCB |
| Zener Impedance (ZZK) | 80 Ω max at IZK = 1 mA - determines voltage regulation stiffness under light-load transient conditions |
| Reverse Leakage (IR) | 0.05 μA max at VR = 27.4 V - guarantees minimal standby current in battery-powered systems |
| ESD Rating | Class 3 (>16 kV HBM) - enables direct integration into handheld device interfaces without external ESD protection |
| Capacitance | 70 pF at VR = 0 V, f = 1 MHz - supports high-frequency noise suppression without signal integrity degradation |
Pinout & Package
SOD-523 surface-mount package: 1.20 mm × 0.80 mm body, 0.60 mm height, matte tin lead finish, MSL 1 rated, compatible with 260 °C reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage rail; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode | Connected to circuit ground or lower potential node; completes conduction path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Pb-Free & RoHS compliant | Meets global environmental compliance requirements without requiring special soldering profiles |
| Ultra-small SOD-523 footprint | Enables placement in <1.0 mm² board area - critical for multi-rail PMIC decoupling in smartphones |
| High ESD robustness | Withstands >16 kV human-body-model discharge - eliminates need for discrete TVS in USB Type-C port protection |
| Stable temperature coefficient | +23.2 mV/°C allows predictable drift modeling in automotive cabin temperature ranges (−40 to +105 °C) |
| Low leakage current | 0.05 μA at 27.4 V supports >10-year battery life in always-on IoT sensor nodes |
Applications
| Smartphone Power Rail Protection | USB Interface Voltage Clamping |
|---|---|
|
Use Scenario: Protects 3.3 V or 5 V LDO outputs from transient surges during hot-plug events in compact mobile handsets. IC Role / Device Role / Timing Role: Two-terminal shunt regulator that clamps excess voltage by diverting surge current to ground. Use Value: Prevents damage to baseband processors and PMICs using only 1.20 mm × 0.80 mm board area and no external bias components. |
Use Scenario: Limits voltage on USB D+ and D− lines to prevent ESD-induced latch-up in USB transceivers. IC Role / Device Role / Timing Role: Fast-response Zener clamp placed directly at connector entry point to absorb 15 kV HBM pulses. Use Value: Achieves Class 3 ESD immunity without increasing BOM count or degrading signal integrity due to 70 pF capacitance. |
| High-Density PC Board Reference | Automotive Body Control Module |
|
Use Scenario: Provides stable 33 V reference for ADC input scaling in industrial data acquisition modules with tight layout constraints. IC Role / Device Role / Timing Role: Precision voltage reference source with ±5% tolerance and predictable +23.2 mV/°C TC. Use Value: Enables accurate sensor measurement across −40 to +125 °C ambient without trimming or calibration. |
Use Scenario: Regulates auxiliary 33 V supply for LIN bus transceivers and LED drivers in door module ECUs. IC Role / Device Role / Timing Role: AEC-Q101 qualified Zener used in non-safety-critical power conditioning networks. Use Value: Delivers automotive-grade reliability with Pb-free construction and MSL 1 moisture sensitivity rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C33 | 33 V ±5%, SOD-323 package (1.7 × 1.3 mm), 300 mW rating, 90 Ω ZZK at 1 mA | Larger footprint and lower power rating limit use in ultra-thin mobile designs | Select when legacy SOD-323 layout compatibility is required and 200 mW margin suffices |
| MMSZ5257ET1G | 33 V ±5%, SOD-123 package (3.7 × 1.6 mm), 500 mW rating, 30 Ω ZZK at 20 mA | Higher test current shifts regulation point; larger size increases PCB area usage | Prefer for higher-current clamping where 20 mA IZT operation improves impedance stability |
Compared with BZX584-C33 and MMSZ5257ET1G, the MM5Z33VT1G delivers identical 33 V regulation with superior space efficiency (1.20 × 0.80 mm), higher ESD rating (>16 kV vs. 8 kV), and optimized low-current impedance for battery-sensitive applications.
Availability
MM5Z33VT1G is available at Aetrix Electronics and suitable for smartphone power rail protection, USB interface voltage clamping, and high-density PC board reference applications requiring stable component supply and full traceability.
Supply support for MM5Z33VT1G 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 is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The MM5Z33VT1G belongs to the MM5ZxxxT1G Zener regulator series, engineered specifically for miniaturized voltage reference and overvoltage protection in portable and high-density electronic systems.
FAQ
What is the Zener voltage tolerance of MM5Z33VT1G?
The MM5Z33VT1G has a nominal Zener voltage of 33 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 31.0 V and 35.0 V when tested at IZK = 1 mA and TA = 25 °C. This tolerance is verified per the onsemi datasheet revision 19 and applies to all units shipped in the MM5Z33VT1G/T5G ordering variant.
Does MM5Z33VT1G meet automotive qualification standards?
The MM5Z33VT1G is not AEC-Q101 qualified; only the SZMM5Z33VT1G variant carries that qualification. The MM5Z33VT1G is intended for commercial and industrial applications. For automotive use, engineers must specify the SZ-prefix part number to ensure PPAP capability and site-controlled manufacturing.
What is the maximum reverse leakage current for MM5Z33VT1G?
The MM5Z33VT1G specifies a maximum reverse leakage current (IR) of 0.05 μA at VR = 27.4 V and TA = 25 °C. This ultra-low leakage supports long-term battery operation in always-on sensor nodes and ensures minimal quiescent current draw in standby modes.
Can MM5Z33VT1G be used in place of MM5Z33VT5G?
Yes - MM5Z33VT1G and MM5Z33VT5G share identical electrical specifications and SOD-523 packaging, differing only in tape-and-reel quantity (3,000 vs. 8,000 units per reel) and part marking. Both are Pb-free, RoHS-compliant, and functionally interchangeable in circuit design and layout.
What is the thermal resistance junction-to-ambient for MM5Z33VT1G?
The MM5Z33VT1G has a thermal resistance of RJA = 250 °C/W when mounted on an FR-4 PCB with a 1 cm² copper pad. This value defines the temperature rise per watt of dissipated power and must be applied when calculating safe operating area under elevated ambient temperatures.
MM5Z33VT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 33 V
- Tolerance:
- ±6.1%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 23.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
MM5Z33VT1G FAQ
1.How can I place an order for MM5Z33VT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5Z33VT1G 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 MM5Z33VT1G reliable?
The price and inventory of MM5Z33VT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5Z33VT1G is usually 5 days.
3.What payment methods are accepted for MM5Z33VT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5Z33VT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5Z33VT1G?
MM5Z33VT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5Z33VT1G 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 MM5Z33VT1G?
For technical support, including MM5Z33VT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5Z33VT1G requirements.
6.How does Aetrix verify that MM5Z33VT1G is sourced from the original manufacturer or authorized distributors?
All MM5Z33VT1G 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 MM5Z33VT1G meets industry standards.
7.What is the process for return or replacement of MM5Z33VT1G?
All MM5Z33VT1G units undergo pre-shipment inspection (PSI). If there is an issue with MM5Z33VT1G, 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 MM5Z33VT1G part is unused and in its original packaging.
Return procedure for MM5Z33VT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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