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onsemi MM3Z3V6ST1G
- Part No.:
- MM3Z3V6ST1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z3V6ST1G.pdf
- Description:
- DIODE ZENER 3.6V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:8,227
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Product details
Overview
MM3Z3V6ST1G from onsemi is a 3.6 V ±3.5% Zener diode in SOD−323 package, rated for 200 mW steady-state power dissipation, with 90 Ω maximum Zener impedance at 5 mA test current and 1.0 µA reverse leakage at 2.88 V. It provides precision voltage regulation in space-constrained portable electronics such as smartphone power rails and USB interface protection.
For engineers reviewing the MM3Z3V6ST1G datasheet, pinout, applications, or equivalent options, key selection criteria include its tight 3.6 V nominal Zener voltage tolerance, low 0.9 mm body height, Class 3 ESD rating (>16 kV HBM), Pb-free SOD−323 packaging, and thermal resistance of 635°C/W.
Technical Context
This Zener diode operates in reverse breakdown mode to clamp transient overvoltage and stabilize reference voltages. Its 5 mA test current (IZT) and 0.5 mA knee current (IZK) define stable regulation boundaries, while the −3.5 mV/°C temperature coefficient ensures predictable drift across −65°C to +150°C junction range.
The device uses a void-free transfer-molded plastic case with corrosion-resistant finish and UL 94 V−0 flammability rating. Cathode polarity is marked by a band, and soldering is rated for 260°C for 10 seconds - compatible with standard reflow profiles for high-density PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.60 V to 3.85 V at 5 mA - defines precise clamping threshold for 3.3 V rail protection |
| Power Dissipation | 200 mW at 25°C - limits continuous energy handling in compact layouts |
| Zener Impedance (ZZT) | ≤90 Ω at IZT = 5 mA - ensures minimal voltage shift under load variation |
| Reverse Leakage (IR) | ≤1.0 µA at VR = 2.88 V - guarantees low standby current in battery-powered systems |
| Temp Coefficient (dVZ/dT) | −3.5 mV/°C - enables predictable voltage drift compensation in thermal-aware designs |
| Capacitance (C) | ≤450 pF at 0 V, 1 MHz - constrains high-frequency noise coupling in signal path applications |
| ESD Rating | Class 3 (>16 kV HBM) - meets IEC 61000-4-2 Level 4 for robust system-level ESD immunity |
Pinout & Package
SOD−323 surface-mount package: 1.7 mm × 1.25 mm body, 0.9 mm height, cathode marked by band. Designed for automated pick-and-place and reflow soldering on FR-4 boards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output or voltage reference node; accepts reverse bias during Zener operation |
| 2 | Anode | Connected to ground or lower-potential rail; completes conduction path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Tight VZ tolerance | ±3.5% at 3.6 V - reduces need for post-production calibration in precision references |
| Pb-free construction | RoHS-compliant Sn-only plating - supports lead-free manufacturing without reliability trade-offs |
| Low-profile package | 0.9 mm max height - enables stacking under shields or placement near connectors in ultra-thin devices |
| High ESD robustness | Class 3 HBM (>16 kV) - eliminates need for external TVS in many consumer interface ports |
Applications
| USB 2.0 Data Line Protection | Smartphone Battery Monitor Reference |
|---|---|
Use Scenario: Clamping ESD transients on D+ and D− lines during hot-plug events in mobile accessories. IC Role / Device Role / Timing Role: Zener diode acting as bidirectional voltage clamp referenced to ground. Use Value: Leverages 3.6 V breakdown and 450 pF capacitance to suppress >8 kV contact discharge without distorting 480 Mbps data eye. | Use Scenario: Providing stable 3.6 V reference for fuel-gauge ADC inputs in Li-ion battery management. IC Role / Device Role / Timing Role: Precision shunt regulator establishing known voltage for analog-to-digital conversion. Use Value: ±3.5% VZ tolerance and −3.5 mV/°C TC enable <1% total error across −20°C to +60°C operating range. |
| IoT Sensor Node Power Rail Clamp | Wearable Heart Rate Monitor Bias Supply |
Use Scenario: Protecting 3.3 V MCU I/O pins from inductive kickback in BLE-enabled sensor nodes. IC Role / Device Role / Timing Role: Standby-mode Zener clamp absorbing short-duration surges without crowbar action. Use Value: 1.0 µA leakage at 2.88 V preserves battery life in multi-year deployments; 200 mW rating handles typical EFT bursts. | Use Scenario: Stabilizing bias voltage for photodiode amplifier in optical PPG circuits. IC Role / Device Role / Timing Role: Low-noise voltage reference source for analog front-end conditioning. Use Value: 90 Ω ZZT minimizes ripple-induced gain error; 450 pF capacitance avoids resonance with 100 nF decoupling caps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B3V6,115 | Same 3.6 V nominal, ±5% tolerance; SOD-323; 250 mW rating; higher 100 Ω ZZT | Higher power margin but looser tolerance - suitable where cost sensitivity outweighs precision needs | Select when board layout allows minor derating and tighter VZ spec is not required |
| MMSZ4685T1G | 3.6 V nominal, ±5%; SOD-123; 500 mW rating; 150 Ω ZZT; larger 3.7 mm × 1.6 mm footprint | Higher power handling but 3× larger area - appropriate for industrial PCBs with less density pressure | Select when thermal margin >200 mW is critical and SOD-123 is already standardized in BOM |
Compared with BZX384-B3V6,115 and MMSZ4685T1G, the MM3Z3V6ST1G delivers tighter voltage tolerance in the smallest footprint, making it optimal for portable designs where board area and regulation accuracy are simultaneously constrained.
Availability
MM3Z3V6ST1G is available at Aetrix Electronics and suitable for smartphone power management, USB interface protection, and wearable sensor biasing requiring stable component supply with full RoHS compliance and traceable sourcing.
Supply support for MM3Z3V6ST1G 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 (formerly ON Semiconductor) is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud computing, medical, and IoT applications.
The MM3Z series targets space-constrained, low-power voltage regulation - designed specifically for portable electronics needing precision Zener clamping in sub-2 mm² footprints with high ESD resilience.
FAQ
What is the exact Zener voltage range specified for MM3Z3V6ST1G at 5 mA test current?
The MM3Z3V6ST1G has a guaranteed Zener voltage range of 3.60 V to 3.85 V when tested at IZT = 5 mA and TA = 25°C. This 3.6 V nominal value with ±3.5% tolerance reflects tight process control for stable reference generation in portable electronics. The MM3Z3V6ST1G datasheet confirms this range in the Electrical Characteristics table on page 2.
Does MM3Z3V6ST1G support lead-free soldering processes?
Yes, MM3Z3V6ST1G is explicitly designated as Pb-free with Sn-only plating per the ordering information table. It supports standard reflow profiles with a maximum soldering temperature of 260°C for 10 seconds, fully compliant with J-STD-020 moisture sensitivity level 1. The MM3Z3V6ST1G package meets RoHS Directive 2011/65/EU requirements without derating.
What is the maximum Zener impedance of MM3Z3V6ST1G and under what conditions is it measured?
The maximum Zener impedance (ZZT) of MM3Z3V6ST1G is 90 Ω, measured at the specified test current IZT = 5 mA and TA = 25°C. This dynamic impedance determines voltage regulation stability under varying load conditions. The MM3Z3V6ST1G datasheet specifies this value in the Electrical Characteristics table and confirms it applies to all units within the production lot.
How does the temperature coefficient of MM3Z3V6ST1G affect its performance across operating temperature ranges?
The MM3Z3V6ST1G has a temperature coefficient of −3.5 mV/°C, meaning its Zener voltage decreases linearly by 3.5 mV per degree Celsius rise above 25°C. Over the full −65°C to +150°C junction range, this results in a predictable 612 mV total drift. The MM3Z3V6ST1G's coefficient enables accurate thermal compensation in reference designs where ambient shifts exceed ±20°C.
Can MM3Z3V6ST1G be used as a substitute for MM3Z3V6ST1 in existing designs?
Yes, MM3Z3V6ST1G is the Pb-free version of MM3Z3V6ST1 and shares identical electrical specifications, SOD−323 package dimensions, pinout, and thermal characteristics. The only difference is the termination plating: Sn-only versus Pb−Sn. The MM3Z3V6ST1G maintains full form-fit-function compatibility and requires no layout or schematic changes when replacing MM3Z3V6ST1 in RoHS-compliant builds.
MM3Z3V6ST1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 3.6 V
- Tolerance:
- ±3%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 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-323
MM3Z3V6ST1G FAQ
1.How can I place an order for MM3Z3V6ST1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z3V6ST1G 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 MM3Z3V6ST1G reliable?
The price and inventory of MM3Z3V6ST1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z3V6ST1G is usually 5 days.
3.What payment methods are accepted for MM3Z3V6ST1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z3V6ST1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z3V6ST1G?
MM3Z3V6ST1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z3V6ST1G 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 MM3Z3V6ST1G?
For technical support, including MM3Z3V6ST1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z3V6ST1G requirements.
6.How does Aetrix verify that MM3Z3V6ST1G is sourced from the original manufacturer or authorized distributors?
All MM3Z3V6ST1G 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 MM3Z3V6ST1G meets industry standards.
7.What is the process for return or replacement of MM3Z3V6ST1G?
All MM3Z3V6ST1G units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z3V6ST1G, 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 MM3Z3V6ST1G part is unused and in its original packaging.
Return procedure for MM3Z3V6ST1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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