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onsemi MM5Z4685T1G
- Part No.:
- MM5Z4685T1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
MM5Z4685T1G.pdf
- Description:
- DIODE ZENER 3.6V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:3,374
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Product details
Overview
MM5Z4685T1G from onsemi is a 3.6 V nominal Zener voltage regulator diode in SOD−523 package, rated for 500 mW power dissipation at TL = 75°C, with 50 µA test current (IZT), 7.5 µA reverse leakage at 2 V (IR), and ±150°C operating junction temperature range. It provides precision low-voltage regulation in space-constrained portable electronics.
For engineers reviewing the MM5Z4685T1G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, ESD robustness (Class 3, >16 kV HBM), and direct-fit alternatives for voltage reference and overvoltage protection design.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load and input conditions. Its 3.6 V nominal Zener voltage is specified at IZT = 50 µA with ±0.18 V tolerance (3.42–3.78 V), and exhibits a temperature coefficient near zero in the 3–4 V range per typical characterization data.
The device uses a silicon planar Zener structure in a void-free thermosetting plastic SOD−523 case, rated for 260°C soldering (10 s), UL 94 V−0 flammability, and Pb−free/RoHS compliance. Cathode polarity is marked by a band on terminal 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.42–3.78 V @ IZT = 50 µA - defines tight regulation window for 3.3 V rail clamping and reference stability |
| Power Dissipation (PD) | 500 mW @ TL = 75°C - supports continuous operation in compact PCB layouts with controlled board thermal mass |
| Reverse Leakage (IR) | 7.5 µA @ VR = 2 V - ensures minimal quiescent current draw in battery-powered standby circuits |
| Junction Temp Range | −55°C to +150°C - enables deployment in automotive cabin, industrial sensor, and outdoor IoT environments |
| ESD Rating | Class 3 (>16 kV HBM) - protects against handling and system-level electrostatic discharge without external suppressors |
| Package | SOD−523 (1.20 × 0.80 × 0.60 mm) - fits high-density routing in smartphones, wearables, and miniaturized PMICs |
Pinout & Package
SOD−523 surface-mount package with cathode indicated by polarity band on terminal 1; anode on terminal 2. Case is void-free thermosetting plastic, UL 94 V−0 rated, corrosion-resistant, and Pb−free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded) | Cathode | Connected to regulated output node; reverse-biased during Zener operation; polarity mark critical for correct orientation in layout |
| 2 | Anode | Connected to ground or lower-potential rail; completes current path during breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low IZT test current | 50 µA enables stable regulation in ultra-low-power sensor biasing and wake-up circuitry |
| Small footprint | 1.20 × 0.80 mm SOD−523 allows placement adjacent to IC pins without compromising routing density |
| High ESD immunity | Class 3 (>16 kV HBM) eliminates need for discrete ESD diodes in front-end protection of analog inputs |
| Pb−free & RoHS | Compliant construction meets global environmental regulations and reflow soldering standards |
Applications
| Smartphone Power Management | IoT Sensor Reference |
|---|---|
Use Scenario: Clamping 3.3 V supply rail against transient spikes during RF transmission bursts. IC Role / Device Role / Timing Role: Voltage clamp protecting baseband processor I/O and PMIC feedback nodes. Use Value: Prevents latch-up and logic upset using only 3.6 V Zener threshold aligned with 3.3 V rail margin. |
Use Scenario: Providing stable 3.6 V reference for ADC biasing in battery-operated environmental sensors. IC Role / Device Role / Timing Role: Precision shunt reference enabling <1% measurement accuracy over −40°C to +85°C. Use Value: Low 50 µA IZT minimizes current drain while maintaining regulation within ±0.18 V tolerance. |
| Automotive Body Control Module | Industrial PLC Input Protection |
Use Scenario: Overvoltage protection on LIN bus transceiver VCC line exposed to load dump events. IC Role / Device Role / Timing Role: Fast-acting shunt limiter absorbing surge energy before downstream IC damage. Use Value: AEC−Q101 qualification and −55°C to +150°C operation ensure reliability in under-hood environments. |
Use Scenario: Protecting 24 V digital input channels from field-wiring induced transients. IC Role / Device Role / Timing Role: Primary clamping element in multi-stage protection network with TVS and series impedance. Use Value: 500 mW rating sustains clamping during repetitive 100 ns pulses without thermal runaway. |
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-C3V6 | 3.6 V nominal, 350 mW rating, SOD-323 package (1.7 × 1.3 mm), 100 nA IR @ 1 V | Lower power rating and larger footprint limit use in ultra-thin mobile designs; superior low-leakage performance suits precision references | Select when ultra-low IR dominates over size constraints and board thermal capacity supports lower PD |
| MMSZ4685T1G | Identical 3.6 V Zener spec, same 500 mW rating, but in larger SOD-123 (3.7 × 1.6 mm) package with higher thermal mass | Improved thermal dissipation supports higher average power in non-space-limited industrial PCBs; less suitable for fine-pitch BGA routing zones | Choose when board layout allows larger footprint and enhanced thermal reliability is prioritized over miniaturization |
Compared with BZX584-C3V6 and MMSZ4685T1G, the MM5Z4685T1G uniquely balances sub-1 mm² area, 500 mW capability, and production-ready AEC−Q101 qualification-making it optimal for next-gen portable and automotive edge nodes where volume, thermal, and compliance requirements intersect.
Availability
MM5Z4685T1G is available at Aetrix Electronics and suitable for smartphone power management, IoT sensor reference design, and automotive body control modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MM5Z4685T1G 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 MM5Z4xxxTxG series was developed specifically for high-density, low-power voltage regulation in portable and automotive electronics-emphasizing miniature packaging, robust ESD immunity, and AEC−Q101 qualification without sacrificing Zener precision.
FAQ
What is the Zener voltage tolerance of MM5Z4685T1G at 50 µA test current?
The MM5Z4685T1G has a guaranteed Zener voltage range of 3.42 V to 3.78 V when measured at IZT = 50 µA and TL = 30°C ±1°C. This ±0.18 V tolerance reflects the device's precision for 3.3 V rail stabilization and ensures compatibility with tight-margin digital I/O interfaces. The nominal value of 3.6 V is centered within this band and validated per onsemi's production testing protocol.
Can MM5Z4685T1G be used in automotive applications?
Yes, MM5Z4685T1G is AEC−Q101 qualified and PPAP capable, making it suitable for automotive applications including body control modules, infotainment power rails, and sensor interface protection. Its −55°C to +150°C junction temperature range, Class 3 ESD rating (>16 kV HBM), and Pb−free construction meet stringent automotive reliability and compliance requirements.
What is the maximum allowable soldering temperature for MM5Z4685T1G?
The MM5Z4685T1G supports lead-free reflow soldering up to 260°C for 10 seconds maximum, as specified in its mechanical characteristics. This aligns with IPC/JEDEC J-STD-020 moisture sensitivity level (MSL) requirements and ensures reliable attachment without delamination or internal damage when following recommended thermal profiles.
How does the leakage current of MM5Z4685T1G compare at 2 V reverse bias?
At VR = 2 V, the MM5Z4685T1G exhibits a maximum reverse leakage current (IR) of 7.5 µA, as confirmed in the Electrical Characteristics table. This low leakage supports extended battery life in always-on sensor nodes and avoids loading sensitive reference inputs-critical for high-impedance analog signal chains where even microamp-level currents degrade accuracy.
Is MM5Z4685T1G compatible with automated pick-and-place assembly?
Yes, MM5Z4685T1G is supplied in tape-and-reel format (3,000 units per reel) and features a standardized SOD−523 footprint optimized for high-speed automated board assembly. Its consistent marking (4H), polarity band visibility, and thermally robust package enable reliable placement and reflow yield in volume manufacturing environments.
MM5Z4685T1G 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):
- 3.6 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 7.5 µA @ 2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
MM5Z4685T1G FAQ
1.How can I place an order for MM5Z4685T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5Z4685T1G 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 MM5Z4685T1G reliable?
The price and inventory of MM5Z4685T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5Z4685T1G is usually 5 days.
3.What payment methods are accepted for MM5Z4685T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5Z4685T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5Z4685T1G?
MM5Z4685T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5Z4685T1G 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 MM5Z4685T1G?
For technical support, including MM5Z4685T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5Z4685T1G requirements.
6.How does Aetrix verify that MM5Z4685T1G is sourced from the original manufacturer or authorized distributors?
All MM5Z4685T1G 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 MM5Z4685T1G meets industry standards.
7.What is the process for return or replacement of MM5Z4685T1G?
All MM5Z4685T1G units undergo pre-shipment inspection (PSI). If there is an issue with MM5Z4685T1G, 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 MM5Z4685T1G part is unused and in its original packaging.
Return procedure for MM5Z4685T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MM5Z4685T1G Tags
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