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onsemi MMSZ4693T3G
- Part No.:
- MMSZ4693T3G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ4693T3G.pdf
- Description:
- DIODE ZENER 7.5V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:16,024
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Product details
Overview
MMSZ4693T3G from onsemi is a 7.5 V nominal Zener voltage regulator diode in SOD−123 package, rated for 500 mW power dissipation at 75°C, with 50 µA test current (IZT), 10 µA reverse leakage at 5.7 V, and ±5% voltage tolerance. It serves as a precision voltage reference or overvoltage clamp in low-power analog sensing and power rail stabilization circuits.
For engineers reviewing the MMSZ4693T3G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage accuracy at IZT = 50 µA, thermal derating behavior above 75°C, junction-to-lead thermal resistance of 150°C/W, and compatibility with automated SMT assembly on FR-4/FR-5 boards.
Technical Context
This device operates as a two-terminal silicon Zener diode with sharp reverse breakdown at nominal 7.5 V, specified under thermal equilibrium at TL = 30°C ±1°C. Its low IZT enables stable regulation in micropower circuits where bias current is constrained.
The SOD−123 package provides defined thermal resistance (RJL = 150°C/W), supports 260°C soldering for 10 seconds, and features cathode polarity band marking. ESD rating exceeds 16 kV per Human Body Model, supporting robust handling in production environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.13–7.88 V @ IZT = 50 µA - defines regulated output range under standard test conditions |
| Power Dissipation (PD) | 500 mW @ TL = 75°C - maximum steady-state power before thermal derating begins |
| Reverse Leakage (IR) | ≤10 µA @ VR = 5.7 V - ensures minimal quiescent current in standby clamping applications |
| Junction-to-Lead Rθ | 150°C/W - enables accurate thermal modeling when mounted on PCB with defined copper area |
| ESD Rating | Class 3 (>16 kV HBM) - supports direct handling without special ESD controls during board assembly |
| Operating Temp | −55°C to +150°C - suitable for automotive under-hood and industrial control environments |
Pinout & Package
SOD−123 surface-mount plastic package (1.60 × 2.69 × 1.16 mm), void-free thermosetting case with corrosion-resistant finish; cathode indicated by polarity band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated voltage node; reverse-biased to conduct at VZ |
| 2 (Anode) | Reference ground terminal | Typically tied to system ground or lower-potential rail in shunt regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low IZT operation | 50 µA test current enables use in sub-100 µA bias networks without regulation loss |
| Pb-Free & RoHS | Fully compliant packaging supports modern environmental compliance requirements |
| Automated assembly optimized | SOD−123 footprint and marking design align with industry-standard pick-and-place tolerances |
| High-density mounting | Compact 1.60 × 2.69 mm outline allows placement in space-constrained sensor modules |
Applications
| Industrial Sensor Signal Conditioning | Automotive Body Control Module Reference |
|---|---|
Use Scenario: Stabilizing 5 V supply rail for analog front-end of temperature/humidity sensors in factory automation nodes. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 7.5 V bias point for op-amp gain-setting networks. Use Value: Maintains <±2% output stability across −40°C to +85°C ambient, enabling <0.5% total measurement error. |
Use Scenario: Clamping transient spikes on LIN bus power lines in door module ECUs. IC Role / Device Role / Timing Role: Overvoltage protection element absorbing short-duration load-dump energy. Use Value: Limits voltage to ≤8 V during 100 ms transients, preventing damage to 5 V LDO regulators downstream. |
| Portable Medical Device Battery Monitoring | IoT Edge Node Power Sequencing |
Use Scenario: Providing stable reference for ADC measurement of lithium-ion cell voltage in wearable pulse oximeters. IC Role / Device Role / Timing Role: Precision voltage reference for ratiometric ADC conversion with internal 2.5 V reference. Use Value: Enables 12-bit effective resolution with <0.1% full-scale drift over battery discharge cycle. |
Use Scenario: Enabling controlled power-up sequencing between MCU core and RF transceiver in LPWAN gateways. IC Role / Device Role / Timing Role: Delayed enable signal generator via RC network charged through MMSZ4693T3G's Zener knee. Use Value: Delivers 100 ms delay with ±5% tolerance using only passive components, eliminating need for dedicated supervisor IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C7V5 | Same nominal 7.5 V, but SOT-23 package (higher RJA = 350°C/W); IZT = 5 mA (100× higher than MMSZ4693T3G) | Requires higher bias current; less suitable for micropower systems; better thermal performance in airflow | Select when board layout accommodates SOT-23 and circuit can support ≥5 mA Zener current |
| MMBZ5236BS | 7.5 V nominal, SOT-323 package, IZT = 20 mA, PD = 300 mW, RJA = 400°C/W | Lower power rating and higher thermal resistance limit use in high-ambient or high-duty-cycle clamping | Prefer for ultra-compact layouts where SOD−123 footprint is unavailable, accepting reduced power margin |
Compared with BZX84-C7V5 and MMBZ5236BS, the MMSZ4693T3G delivers superior micropower regulation (50 µA IZT), tighter thermal coupling via RJL = 150°C/W, and higher surge immunity-making it optimal for space-constrained, low-bias, high-reliability applications.
Availability
MMSZ4693T3G is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, automotive body control module reference, and portable medical device battery monitoring requiring stable component supply and long-term lifecycle continuity.
Supply support for MMSZ4693T3G 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 MMSZ4xxxT1G series was designed specifically for high-volume, surface-mount Zener regulation in space- and power-constrained systems-emphasizing low IZT, tight voltage tolerance, and robust manufacturability in SOD−123.
FAQ
What is the nominal Zener voltage of the MMSZ4693T3G and how tightly is it specified?
The MMSZ4693T3G has a nominal Zener voltage of 7.5 V, with a guaranteed range of 7.13 V to 7.88 V at IZT = 50 µA and TL = 30°C ±1°C. This ±5% tolerance is maintained across the full operating temperature range of −55°C to +150°C, making the MMSZ4693T3G suitable for precision reference applications where voltage stability under thermal stress is critical.
Can the MMSZ4693T3G be used in micropower circuits drawing less than 100 µA?
Yes-the MMSZ4693T3G is specifically characterized at IZT = 50 µA, enabling reliable regulation in ultra-low-current designs. Its low test current requirement means it maintains stable Zener voltage even when biased with sub-100 µA sources, unlike higher-IZT Zeners that would drop out of regulation. This makes the MMSZ4693T3G ideal for battery-powered sensor nodes and energy-harvesting systems.
What is the maximum allowable junction temperature for continuous operation of the MMSZ4693T3G?
The MMSZ4693T3G supports a junction and storage temperature range of −55°C to +150°C. For continuous operation, thermal design must ensure TJ does not exceed +150°C. With RJL = 150°C/W and PD = 500 mW at TL = 75°C, proper PCB copper area and airflow are required to maintain safe margins-especially in sealed enclosures or high-ambient environments.
How does the MMSZ4693T3G compare to older through-hole Zener diodes like the 1N4733A?
The MMSZ4693T3G replaces legacy through-hole Zeners such as the 1N4733A (also ~7.5 V) with surface-mount compatibility, tighter voltage tolerance (±5% vs. ±10%), lower IZT (50 µA vs. 37 mA), and enhanced ESD robustness (>16 kV HBM vs. unqualified). Its SOD−123 footprint also reduces board area by >70%, supporting modern high-density PCB layouts.
Is the MMSZ4693T3G qualified for automotive applications?
The MMSZ4693T3G itself is not AEC-Q101 qualified; however, its automotive-grade counterpart SZMMSZ4693T3G is fully AEC-Q101 qualified and PPAP capable. Both share identical electrical specifications and SOD−123 packaging, but only the SZ-prefix version meets automotive reliability and traceability requirements for under-hood and safety-critical modules.
MMSZ4693T3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 5.7 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
MMSZ4693T3G FAQ
1.How can I place an order for MMSZ4693T3G through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ4693T3G 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 MMSZ4693T3G reliable?
The price and inventory of MMSZ4693T3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ4693T3G is usually 5 days.
3.What payment methods are accepted for MMSZ4693T3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ4693T3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ4693T3G?
MMSZ4693T3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ4693T3G 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 MMSZ4693T3G?
For technical support, including MMSZ4693T3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ4693T3G requirements.
6.How does Aetrix verify that MMSZ4693T3G is sourced from the original manufacturer or authorized distributors?
All MMSZ4693T3G 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 MMSZ4693T3G meets industry standards.
7.What is the process for return or replacement of MMSZ4693T3G?
All MMSZ4693T3G units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ4693T3G, 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 MMSZ4693T3G part is unused and in its original packaging.
Return procedure for MMSZ4693T3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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