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onsemi MM5Z9V1T1G
- Part No.:
- MM5Z9V1T1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
MM5Z9V1T1G.pdf
- Description:
- DIODE ZENER 9.1V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:25,350
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Product details
Overview
MM5Z9V1T1G from onsemi is a 9.1 V ±5% Zener diode in SOD-523 package, rated for 500 mW steady-state power dissipation at 25 °C, with 15 Ω max Zener impedance at 5 mA test current and 0.2 µA reverse leakage at 7.0 V. It provides precision voltage regulation in space-constrained portable electronics such as smartphone power rail clamping and USB interface overvoltage protection.
For engineers reviewing the MM5Z9V1T1G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, ESD robustness (Class 3, >16 kV HBM), and direct alternative options for voltage reference and transient suppression design.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to clamp or regulate voltage at its nominal Zener voltage of 9.1 V. Its low 15 Ω dynamic impedance ensures stable regulation under varying load currents up to 5 mA, while its 0.7 mm body height enables placement on ultra-dense PCBs.
The MM5Z9V1T1G exhibits a positive temperature coefficient of +3.8 mV/°C at IZT, enabling predictable drift compensation in temperature-sensitive circuits. Its 130 pF capacitance at 0 V and 1 MHz supports high-frequency noise filtering without compromising response speed in fast transient events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.1 V nominal, 8.5–9.6 V range at 5 mA - defines precise clamping threshold for 9 V rail protection |
| Power Rating (PD) | 500 mW at 25 °C, derates 4.0 mW/°C above ambient - sets maximum continuous dissipation on FR-4 board |
| Zener Impedance (ZZT) | 15 Ω max at 5 mA - ensures minimal voltage shift under load variation in feedback or reference paths |
| Reverse Leakage (IR) | 0.2 µA max at 7.0 V - guarantees negligible standby current in battery-powered systems |
| ESD Rating | Class 3 (>16 kV) per HBM - provides built-in system-level ESD immunity without external protection |
| Capacitance (C) | 130 pF at 0 V, 1 MHz - suitable for RF decoupling and high-speed signal line clamping |
| Package | SOD-523 (1.20 × 0.80 × 0.70 mm) - enables placement in <1.0 mm² footprint on mobile PCBs |
Pinout & Package
SOD-523 surface-mount package: 1.20 mm × 0.80 mm body, 0.70 mm height, matte tin lead finish, MSL 1, 260 °C reflow compatible. Cathode marked by polarity band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output or protected node; reverse-biased during Zener operation |
| 2 | Anode | Connected to ground or lower-potential reference; completes conduction path during breakdown |
Key Features
| Feature | Design Value |
|---|---|
| Pb-Free & RoHS compliant | Meets global environmental compliance requirements without lead-based solder compatibility compromises |
| Low-profile SOD-523 package | Enables integration into sub-1 mm² board areas typical in modern smartphones and wearables |
| High ESD robustness (HBM >16 kV) | Eliminates need for discrete ESD diodes in USB, audio jack, and button interface protection |
| Stable 9.1 V reference with ±5% tolerance | Supports accurate voltage monitoring and overvoltage cutoff in 9 V supply domains |
| Low 0.2 µA leakage at 7 V | Preserves battery life in always-on circuits like real-time clock backup or sensor wake-up monitors |
Applications
| USB Interface Protection | Smartphone Power Rail Clamping |
|---|---|
|
Use Scenario: Protecting USB D+ and D− lines from ESD transients and overvoltage events during hot-plug insertion. IC Role / Device Role / Timing Role: Zener clamping diode placed between data line and ground to shunt excess energy before IC input damage occurs. Use Value: Leverages 130 pF capacitance and >16 kV HBM rating to suppress fast transients without signal integrity degradation. |
Use Scenario: Clamping 9 V DC-DC converter output to prevent downstream IC damage during load dump or startup overshoot. IC Role / Device Role / Timing Role: Two-terminal voltage regulator absorbing transient energy above 9.1 V threshold. Use Value: 500 mW power rating and 15 Ω ZZT ensure reliable clamping without thermal runaway under 100 ms surges. |
| IoT Sensor Node Reference | Wearable Battery Monitoring |
|
Use Scenario: Providing stable 9.1 V reference for ADC measurement of analog sensor outputs in low-power edge nodes. IC Role / Device Role / Timing Role: Precision Zener used as shunt reference in ratiometric sensing circuits. Use Value: ±5% tolerance and +3.8 mV/°C tempco enable calibrated voltage scaling across −40 to +85 °C operating range. |
Use Scenario: Monitoring lithium-ion battery voltage in fitness trackers, where overvoltage detection triggers safe shutdown. IC Role / Device Role / Timing Role: Threshold detector via comparator biasing using MM5Z9V1T1G's stable breakdown voltage. Use Value: 0.2 µA leakage preserves microamp-level sleep current budgets while maintaining accurate 9.1 V trip point. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C9V1 | Same 9.1 V nominal, but SOD-323 package (1.7 × 1.3 mm); 350 mW rating; 20 Ω ZZT | Larger footprint and lower power handling limit suitability for compact, high-dissipation designs | Select when board layout allows larger pad area and thermal mass is available for 350 mW operation |
| MMSZ5240BT1G | 9.1 V nominal, SOD-123 package (3.7 × 1.6 mm); 500 mW rating; 15 Ω ZZT; 100 pF capacitance | 3× larger footprint; higher thermal mass enables sustained 500 mW dissipation in industrial environments | Prefer for industrial-grade reliability where mechanical robustness and long-term thermal stability outweigh size constraints |
Compared with BZX584C9V1 and MMSZ5240BT1G, the MM5Z9V1T1G uniquely balances ultra-small SOD-523 size, full 500 mW rating, and low 15 Ω impedance-making it optimal for next-generation portable devices where board area and regulation accuracy are co-constrained.
Availability
MM5Z9V1T1G is available at Aetrix Electronics and suitable for smartphone ESD protection, wearable battery monitoring, and IoT sensor reference applications requiring stable component supply and consistent parametric performance across production lots.
Supply support for MM5Z9V1T1G 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 semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MM5Z9V1T1G belongs to the MM5ZxxxT1G Zener regulator series, engineered specifically for space-constrained, high-density portable electronics requiring precision voltage clamping with minimal board area and high ESD resilience.
FAQ
What is the exact Zener voltage tolerance of MM5Z9V1T1G?
The MM5Z9V1T1G has a standard tolerance of ±5%, with a specified Zener voltage range of 8.5 V to 9.6 V at 5 mA test current (IZT). This tolerance is confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet (Rev. 19, April 2025). The MM5Z9V1T1G maintains this specification across its full operating temperature range of −65 °C to +150 °C.
Does MM5Z9V1T1G support lead-free reflow soldering?
Yes, the MM5Z9V1T1G is Pb-Free and RoHS compliant, with 100% matte tin lead finish and qualified for peak reflow temperatures up to 260 °C. It meets JEDEC J-STD-020 MSL 1 requirements, meaning it can be stored indefinitely at ambient conditions without baking prior to assembly. This makes MM5Z9V1T1G fully compatible with standard lead-free reflow profiles used in high-volume portable electronics manufacturing.
What is the thermal resistance junction-to-ambient for MM5Z9V1T1G?
The MM5Z9V1T1G has a thermal resistance of 250 °C/W junction-to-ambient (RJA) when mounted on a single-sided FR-4 board with a 1 cm² copper pad. This value is specified in the Maximum Ratings table and directly determines its power derating curve: 4.0 mW/°C reduction above 25 °C ambient. Engineers must apply this RJA to calculate safe operating temperature margins for MM5Z9V1T1G in thermally constrained layouts.
How does the temperature coefficient affect MM5Z9V1T1G performance?
The MM5Z9V1T1G has a temperature coefficient of +3.8 mV/°C at IZT, indicating its Zener voltage increases linearly with temperature. This positive drift is critical for predicting regulation accuracy across operating ranges: at 85 °C ambient, the voltage shift is approximately +228 mV relative to 25 °C. Designers use this coefficient to calibrate voltage references or select complementary components in MM5Z9V1T1G-based feedback networks.
Is MM5Z9V1T1G suitable for automotive applications?
The base MM5Z9V1T1G is not AEC-Q101 qualified; however, its automotive-grade counterpart SZMM5Z9V1T1G is explicitly qualified and PPAP capable. While both share identical electrical specs and SOD-523 packaging, only the SZ-prefixed version undergoes automotive-specific stress testing and process controls. For non-automotive portable or industrial use, MM5Z9V1T1G remains fully appropriate-but for automotive ECUs or infotainment systems, the SZMM5Z9V1T1G variant must be selected to meet qualification requirements.
MM5Z9V1T1G 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):
- 9.1 V
- Tolerance:
- ±6%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 7 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
MM5Z9V1T1G FAQ
1.How can I place an order for MM5Z9V1T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5Z9V1T1G 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 MM5Z9V1T1G reliable?
The price and inventory of MM5Z9V1T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5Z9V1T1G is usually 5 days.
3.What payment methods are accepted for MM5Z9V1T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5Z9V1T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5Z9V1T1G?
MM5Z9V1T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5Z9V1T1G 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 MM5Z9V1T1G?
For technical support, including MM5Z9V1T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5Z9V1T1G requirements.
6.How does Aetrix verify that MM5Z9V1T1G is sourced from the original manufacturer or authorized distributors?
All MM5Z9V1T1G 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 MM5Z9V1T1G meets industry standards.
7.What is the process for return or replacement of MM5Z9V1T1G?
All MM5Z9V1T1G units undergo pre-shipment inspection (PSI). If there is an issue with MM5Z9V1T1G, 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 MM5Z9V1T1G part is unused and in its original packaging.
Return procedure for MM5Z9V1T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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