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onsemi MM3Z5V1T1
- Part No.:
- MM3Z5V1T1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z5V1T1.pdf
- Description:
- DIODE ZENER 5.1V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:4,506
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Product details
Overview
MM3Z5V1T1 from onsemi is a 5.1 V, 200 mW surface-mount Zener diode in SOD−323 package, designed for precision voltage regulation and overvoltage protection in space-constrained circuits such as smartphone power rails and portable device voltage references.
For engineers reviewing the MM3Z5V1T1 datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage (4.8–5.4 V), dynamic impedance (60 Ω @ 5 mA), leakage current (2 µA @ 2 V), temperature coefficient (−2.7 mV/°C), and Pb-free SOD−323 mechanical compatibility.
Technical Context
The MM3Z5V1T1 operates as a two-terminal voltage reference device with reverse-biased Zener breakdown at 5.1 V nominal under 5 mA test current. Its low dynamic impedance (60 Ω) and tight voltage tolerance (±0.3 V) support stable regulation in low-power bias networks and feedback loops.
It features Class 3 ESD robustness (>16 kV HBM), UL 94 V−0 flammability rating, and thermal resistance of 635°C/W - enabling reliable operation in handheld electronics where board area, thermal budget, and electrostatic immunity are critical constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 4.8–5.4 V @ 5 mA - defines regulated output range for precision clamping or reference generation |
| Power Rating | 200 mW @ 25°C - sets maximum continuous dissipation without derating |
| Zener Impedance | 60 Ω @ 5 mA - determines regulation stiffness under load transients |
| Leakage Current | 2 µA @ 2 V - ensures minimal quiescent current in standby mode |
| Temp Coefficient | −2.7 mV/°C - quantifies voltage drift across operating temperature range |
| Capacitance | 225 pF @ 0 V, 1 MHz - impacts high-frequency noise filtering and signal integrity |
| ESD Rating | Class 3 (>16 kV HBM) - supports direct handling and assembly in unshielded environments |
Pinout & Package
SOD−323 surface-mount package: 1.7 mm × 1.25 mm body, 0.9 mm height, cathode marked by band; compatible with standard reflow profiles (260°C/10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener anode connection point in reverse bias | Connected to higher-potential node for regulation; polarity band identifies this terminal |
| 2 (Anode) | Zener cathode connection point in reverse bias | Connected to lower-potential node (e.g., ground or return path); completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Pb-free SOD−323 packaging | Meets RoHS compliance requirements without compromising solderability or thermal performance |
| Low-profile footprint | 0.9 mm max height enables use in ultra-thin mobile PCBs and stacked modules |
| High ESD immunity | Class 3 HBM rating eliminates need for external ESD protection in many consumer interfaces |
| Tight voltage tolerance | ±0.3 V window at 5.1 V supports accurate threshold detection in battery monitoring circuits |
| Stable tempco | −2.7 mV/°C enables predictable drift compensation in temperature-sensitive analog front-ends |
Applications
| Battery Voltage Monitoring | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charging/discharging in wearables. IC Role / Device Role / Timing Role: Zener reference for ADC input scaling and comparator threshold setting. Use Value: Tight 4.8–5.4 V tolerance ensures ±0.5% full-scale accuracy in 3.3 V ADC systems. | Use Scenario: Clamping transient surges on USB VBUS line in OTG-enabled peripherals. IC Role / Device Role / Timing Role: Shunt protection device limiting VBUS to safe level during hot-plug events. Use Value: 200 mW rating and 60 Ω impedance provide fast response to 10–100 ns spikes without latch-up. |
| RF Front-End Bias Reference | Low-Power Sensor Signal Conditioning |
Use Scenario: Providing stable gate bias for GaAs FETs in Bluetooth/WiFi PA stages. IC Role / Device Role / Timing Role: Low-noise DC reference source decoupled from noisy digital supply rails. Use Value: 225 pF capacitance minimizes RF coupling into bias network while maintaining regulation stability. | Use Scenario: Setting reference voltage for op-amp-based thermistor or photodiode amplifiers. IC Role / Device Role / Timing Role: Precision voltage source for ratiometric measurement configurations. Use Value: −2.7 mV/°C tempco allows predictable offset correction in ambient temperature ranges (−40 to +85°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B5V1,115 | Same 5.1 V nominal, but 300 mW rating and SOD-323 package; higher leakage (5 µA @ 2 V) | Higher power margin suits intermittent surge clamping; less suitable for ultra-low-IQ battery monitoring | Select when >200 mW headroom is needed and leakage sensitivity is low |
| MMSZ5222BT1G | 5.1 V nominal, 500 mW rating, SOD-123 package; larger footprint (3.5 mm × 1.6 mm) and higher thermal resistance | Greater power handling for industrial I/O protection; incompatible with high-density mobile layouts | Select when board space permits and higher steady-state dissipation is required |
Compared with BZX384-B5V1,115 and MMSZ5222BT1G, the MM3Z5V1T1 offers optimal balance of compact size, low leakage, and precise regulation for space- and power-constrained portable electronics - without requiring layout changes or thermal redesign.
Availability
MM3Z5V1T1 is available at Aetrix Electronics and suitable for battery management systems, USB interface protection, RF bias networks, and low-power sensor signal conditioning requiring stable component supply and consistent parametric performance.
Supply support for MM3Z5V1T1 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 focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and intelligent edge applications.
The MM3Z series is part of onsemi's precision Zener regulator portfolio, engineered specifically for miniaturized, high-reliability voltage reference and protection functions in portable and wireless devices.
FAQ
What is the nominal Zener voltage of the MM3Z5V1T1 and its tolerance?
The MM3Z5V1T1 has a nominal Zener voltage of 5.1 V with a guaranteed range of 4.8 V to 5.4 V at 5 mA test current (IZT). This ±0.3 V tolerance supports accurate voltage referencing in precision analog circuits and ensures consistent clamping behavior across production lots of the MM3Z5V1T1.
Does the MM3Z5V1T1 support Pb-free assembly processes?
Yes, the MM3Z5V1T1 is offered in a Pb-free SOD−323 package (indicated by the "G" suffix), fully compliant with RoHS Directive 2011/65/EU. It supports standard lead-free reflow profiles up to 260°C for 10 seconds, and its terminations are plated with pure tin per onsemi's Pb-free specifications for the MM3Z5V1T1.
What is the maximum power dissipation of the MM3Z5V1T1 at room temperature?
The MM3Z5V1T1 has a steady-state power rating of 200 mW at TA = 25°C. Power must be linearly derated by 1.5 mW/°C above 25°C, reaching zero at approximately 158°C ambient - a key thermal design constraint for sustained operation in enclosed or high-temperature environments using the MM3Z5V1T1.
How does the temperature coefficient affect the MM3Z5V1T1's regulation accuracy?
The MM3Z5V1T1 exhibits a temperature coefficient of −2.7 mV/°C, meaning its Zener voltage decreases by 2.7 mV per degree Celsius rise in junction temperature. This predictable drift enables compensation in temperature-critical applications like sensor biasing, and is a documented characteristic of the MM3Z5V1T1 across its −65°C to +150°C operating range.
Can the MM3Z5V1T1 be used for ESD protection in USB 2.0 data lines?
No - the MM3Z5V1T1 is not optimized for high-speed data line ESD protection due to its 225 pF capacitance, which would degrade signal integrity above ~10 MHz. It is intended for DC voltage regulation and low-frequency clamping; dedicated low-capacitance TVS diodes (e.g., ESD9X series) are recommended for USB 2.0 data line protection instead of the MM3Z5V1T1.
MM3Z5V1T1 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):
- 5.1 V
- Tolerance:
- ±6%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 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-323
MM3Z5V1T1 FAQ
1.How can I place an order for MM3Z5V1T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z5V1T1 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 MM3Z5V1T1 reliable?
The price and inventory of MM3Z5V1T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z5V1T1 is usually 5 days.
3.What payment methods are accepted for MM3Z5V1T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z5V1T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z5V1T1?
MM3Z5V1T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z5V1T1 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 MM3Z5V1T1?
For technical support, including MM3Z5V1T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z5V1T1 requirements.
6.How does Aetrix verify that MM3Z5V1T1 is sourced from the original manufacturer or authorized distributors?
All MM3Z5V1T1 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 MM3Z5V1T1 meets industry standards.
7.What is the process for return or replacement of MM3Z5V1T1?
All MM3Z5V1T1 units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z5V1T1, 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 MM3Z5V1T1 part is unused and in its original packaging.
Return procedure for MM3Z5V1T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MM3Z5V1T1 Tags
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