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onsemi MMSZ16T1
- Part No.:
- MMSZ16T1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ16T1.pdf
- Description:
- DIODE ZENER 16V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:6,473
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Product details
Overview
MMSZ16T1G from onsemi is a 500 mW, 16 V ±5% Zener voltage regulator diode in SOD−123 surface-mount package, rated for 15.2–16.8 V reverse breakdown at 5 mA test current, with 40 Ω dynamic impedance and 0.05 μA reverse leakage at 11.2 V. It serves as a precision voltage reference or overvoltage clamp in low-power power supply rails and signal conditioning circuits.
For engineers reviewing the MMSZ16T1G datasheet, pinout, applications, or equivalent options, this device is selected for stable 16 V regulation in space-constrained PCBs requiring AEC−Q101 qualification, high ESD immunity (>16 kV HBM), and thermal reliability up to +150°C junction temperature.
Technical Context
This Zener diode operates in reverse-biased breakdown mode with a nominal Zener voltage of 16 V at IZT = 5 mA, exhibiting a temperature coefficient near zero (±0.001%/°C typical) due to its 16 V rating - positioned at the crossover point where TC transitions from negative to positive. Its 40 Ω Zener impedance ensures minimal voltage variation under load transients.
The device is thermally characterized with RJA = 340°C/W and RJL = 150°C/W, enabling reliable operation on FR−5 boards up to 75°C ambient before derating. It supports pulsed surge power up to 1 W (1 ms pulse width) and maintains ≤0.95 V forward voltage at 10 mA forward current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.2–16.8 V at 5 mA - defines tight 16 V ±5% regulation window for reference stability |
| Power Dissipation | 500 mW on FR−5 board - sets maximum continuous DC power handling without forced cooling |
| Zener Impedance (ZZT) | 40 Ω max at 5 mA - determines output voltage deviation under varying load current |
| Reverse Leakage (IR) | 0.05 μA max at 11.2 V - ensures negligible quiescent current in standby clamp applications |
| Thermal Resistance (RJA) | 340°C/W - quantifies junction-to-ambient heat rise per watt, critical for layout thermal design |
| ESD Rating | Class 3 (>16 kV HBM) - guarantees robustness against handling and system-level electrostatic discharge |
| Junction Temp Range | −55°C to +150°C - enables deployment in automotive engine compartments and industrial control enclosures |
Pinout & Package
SOD−123 plastic surface-mount package (1.60 × 2.69 × 1.16 mm), cathode indicated by band; optimized for automated pick-and-place and reflow soldering on high-density PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-biased during Zener operation |
| 2 (Non-banded End) | Anode | Connected to circuit ground or lower-potential rail; completes bias path |
Key Features
| Feature | Design Value |
|---|---|
| AEC−Q101 Qualified | Validated for automotive electronics use with controlled manufacturing and PPAP documentation |
| Pb−Free (RoHS Compliant) | Meets global environmental compliance requirements without lead-based solder compatibility compromises |
| Small SOD−123 Footprint | Enables placement in <1.0 mm² board area - ideal for wearables, sensor nodes, and compact power modules |
| High ESD Immunity | Withstands >16 kV human-body-model discharge - reduces need for external ESD protection components |
| Stable Temperature Coefficient | Near-zero TC around 16 V minimizes drift across −55°C to +150°C operating range |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage clamping of LIN bus transceiver I/O pins against load-dump transients. IC Role / Device Role / Timing Role: Zener clamp protecting 12 V rail interface from >20 V surges. Use Value: Prevents damage to transceiver ICs while maintaining signal integrity via low 40 Ω ZZT. |
Use Scenario: Providing stable 16 V reference for 16-bit ADC biasing in analog front-end circuits. IC Role / Device Role / Timing Role: Precision shunt reference replacing higher-cost IC references. Use Value: Delivers ±5% tolerance and <0.05 μA leakage - minimizing reference error and power loss. |
| Consumer Wearable Power Management | Medical Diagnostic Equipment Monitoring |
Use Scenario: Overvoltage protection for coin-cell–powered microcontroller reset circuitry. IC Role / Device Role / Timing Role: Low-current Zener shunt limiting VDD to safe 16 V during battery charging anomalies. Use Value: Draws only 0.05 μA at 11.2 V - extends battery life without compromising protection. |
Use Scenario: Clamp protection on isolated analog input channels measuring patient biopotentials. IC Role / Device Role / Timing Role: Transient suppressor safeguarding instrumentation amplifier inputs. Use Value: Withstands >16 kV ESD events per HBM - meets IEC 60601-1-2 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C16 | Same 16 V ±5%, but 300 mW rating and SOD-323 package (smaller footprint, lower power) | Limited to lower-power signal-level clamping; not suitable for 500 mW sustained dissipation | Select when board area is constrained and peak power <300 mW |
| 1SMA5925BT3G | 16 V ±5%, 1.5 W rating, SMA package - higher power, larger footprint, different thermal profile | Used in higher-current power supply feedback loops where >500 mW surge capability is required | Select when transient energy absorption exceeds MMSZ16T1G's 1 W/1 ms limit |
Compared with BZX584C16 and 1SMA5925BT3G, the MMSZ16T1G uniquely balances 500 mW continuous power, SOD−123 compactness, AEC−Q101 qualification, and ultra-low leakage - making it optimal for automotive and space-limited industrial designs needing verified reliability without over-engineering.
Availability
MMSZ16T1G is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and portable medical monitoring systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MMSZ16T1G 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 specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The MMSZ16T1G belongs to the MMSZxxxT1G Zener regulator series, designed specifically for high-reliability, surface-mount voltage reference and protection in space-constrained, thermally demanding environments.
FAQ
What is the Zener voltage tolerance for MMSZ16T1G?
The MMSZ16T1G has a nominal Zener voltage of 16 V with a standard tolerance of ±5%, resulting in a guaranteed breakdown range of 15.2 V to 16.8 V at 5 mA test current (IZT). This tolerance is measured under pulsed conditions (PW = 1 ms) and applies across the full operating temperature range.
Is MMSZ16T1G suitable for automotive applications?
Yes, the MMSZ16T1G is AEC−Q101 qualified and PPAP capable, meeting stringent automotive reliability standards for temperature cycling, humidity resistance, and mechanical shock. Its −55°C to +150°C junction temperature range and Pb−free construction support under-hood and body-control module deployments.
What is the maximum reverse leakage current for MMSZ16T1G?
The MMSZ16T1G specifies a maximum reverse leakage current of 0.05 μA at VR = 11.2 V (70% of nominal VZ). This ultra-low leakage ensures minimal power loss in battery-powered or high-impedance reference applications where standby current must be tightly controlled.
Can MMSZ16T1G replace older MMSZ16T1 parts?
Yes - the MMSZ16T1G is the Pb−free, RoHS-compliant successor to the legacy MMSZ16T1. It maintains identical electrical specifications, SOD−123 package dimensions, and pinout, with enhanced ESD robustness (>16 kV HBM) and AEC−Q101 qualification added.
What is the thermal resistance of MMSZ16T1G on FR−5 board?
On FR−5 board, the MMSZ16T1G has a junction-to-ambient thermal resistance (RJA) of 340°C/W and junction-to-lead resistance (RJL) of 150°C/W. These values define the temperature rise per watt dissipated and inform PCB copper pour and layout decisions for thermal management.
MMSZ16T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 16 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
MMSZ16T1 FAQ
1.How can I place an order for MMSZ16T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ16T1 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 MMSZ16T1 reliable?
The price and inventory of MMSZ16T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ16T1 is usually 5 days.
3.What payment methods are accepted for MMSZ16T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ16T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ16T1?
MMSZ16T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ16T1 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 MMSZ16T1?
For technical support, including MMSZ16T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ16T1 requirements.
6.How does Aetrix verify that MMSZ16T1 is sourced from the original manufacturer or authorized distributors?
All MMSZ16T1 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 MMSZ16T1 meets industry standards.
7.What is the process for return or replacement of MMSZ16T1?
All MMSZ16T1 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ16T1, 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 MMSZ16T1 part is unused and in its original packaging.
Return procedure for MMSZ16T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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