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onsemi MMSZ4710T1
- Part No.:
- MMSZ4710T1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ4710T1.pdf
- Description:
- DIODE ZENER 25V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:6,124
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Product details
Overview
MMSZ4710T1 from onsemi is a 25 V, 500 mW surface-mount Zener diode in SOD−123 package, designed for precision voltage regulation and reference applications with ±5% tolerance, 0.01 µA leakage at 19.0 V reverse bias, and −55°C to +150°C operating range. It serves as a stable shunt regulator in power supply feedback loops, overvoltage protection circuits, and analog reference sources.
For engineers reviewing the MMSZ4710T1 datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage (25 V), test current (50 µA), dynamic impedance (19.0 Ω), temperature coefficient (~+5.5 mV/°C), and SOD−123 mechanical compatibility with high-density PCB layouts.
Technical Context
The MMSZ4710T1 operates as a silicon planar Zener diode utilizing controlled avalanche breakdown at 25 V nominal reverse voltage. Its low 50 µA test current (IZT) enables stable regulation under light-load conditions, while its 19.0 Ω dynamic impedance (ZZT) ensures minimal output voltage variation across load changes.
Designed for thermal stability, it features a junction-to-ambient thermal resistance of 340°C/W and operates across −55°C to +150°C. Its ESD rating exceeds 16 kV (HBM Class 3) and it complies with RoHS and AEC−Q101 when ordered as SZMMSZ4710T1G.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 23.75 V (min) to 26.25 V (max) at IZT = 50 µA - defines regulation window for precision reference use |
| Power Dissipation (PD) | 500 mW on FR−5 board at TL = 75°C - sets maximum continuous power handling in standard PCB layout |
| Dynamic Impedance (ZZT) | 19.0 Ω at IZ = 1 mA - determines output voltage ripple sensitivity under varying current |
| Reverse Leakage (IR) | 0.01 µA at VR = 19.0 V - ensures minimal quiescent current in standby or battery-powered circuits |
| Temperature Coefficient | +5.5 mV/°C (typical near 25 V) - quantifies voltage drift per degree Celsius for thermal design margining |
| Junction Temperature Range | −55°C to +150°C - supports operation in 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 cathode polarity band. Designed for automated placement and reflow soldering at up to 260°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 (Non-banded End) | Anode | Connected to circuit ground or lower-potential rail; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| Low IZT test current | 50 µA enables stable regulation in ultra-low-power monitoring and sensor biasing circuits |
| Pb−Free & RoHS compliant | Meets global environmental compliance requirements without lead-based solder compatibility compromises |
| ESD robustness | Class 3 HBM (>16 kV) protects against handling damage during assembly and field operation |
| High-temperature capability | 150°C max junction temperature supports deployment in engine control units and industrial motor drives |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Used in secondary-side feedback loop of isolated DC−DC converters to regulate output voltage via optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 25 V threshold for error signal generation. Use Value: Tight 23.75–26.25 V tolerance and low 19.0 Ω dynamic impedance minimize output voltage drift across line/load/temperature. | Use Scenario: Placed across sensitive IC inputs (e.g., microcontroller ADC pins) to clamp transient overvoltages exceeding 25 V. IC Role / Device Role / Timing Role: Passive overvoltage protection device diverting surge current away from downstream components. Use Value: Fast avalanche response and 0.01 µA leakage at 19.0 V ensure minimal interference during normal operation and reliable clamping during transients. |
| Industrial Sensor Excitation | Automotive Body Control Module Reference |
Use Scenario: Supplies stable excitation voltage to resistive bridge sensors (e.g., pressure transducers) in PLC analog input modules. IC Role / Device Role / Timing Role: Precision voltage reference source for ratiometric measurement systems. Use Value: −55°C to +150°C operating range and +5.5 mV/°C tempco allow accurate calibration across wide ambient conditions. | Use Scenario: Provides reference voltage for LIN bus transceiver biasing and internal LDO monitoring in BCMs. IC Role / Device Role / Timing Role: AEC−Q101-qualified voltage clamp and reference in automotive-grade subsystems. Use Value: SZ-prefix variants (e.g., SZMMSZ4710T1G) offer PPAP-capable traceability and site-controlled manufacturing for OEM compliance. |
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-C24LT1G | 24 V nominal, SOT−23 package, 350 mW rating, 80 Ω ZZT | Lower power and higher impedance limit use in precision references; better suited for general-purpose clamping | Select when board space allows SOT−23 and 24 V regulation suffices with relaxed stability requirements |
| MMSZ5242BT1G | 24 V nominal, same SOD−123 package, 500 mW, but 30 Ω ZZT and higher IZT (20 mA) | Higher test current demands more bias power; less suitable for ultra-low-power designs | Choose when legacy 24 V design reuse is needed and 25 V tolerance is not mandatory |
Compared with MMSZ4710T1, BZX84-C24LT1G offers smaller footprint but reduced regulation accuracy and power handling, while MMSZ5242BT1G matches the package and power rating but trades tighter voltage tolerance for higher dynamic impedance and bias current demand.
Availability
MMSZ4710T1 is available at Aetrix Electronics and suitable for power supply feedback references, overvoltage protection circuits, and industrial sensor excitation requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MMSZ4710T1 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 MMSZ4xxxT1G series is part of onsemi's precision Zener regulator portfolio, engineered for high-reliability voltage reference and clamping in space-constrained, thermally demanding applications.
FAQ
What is the nominal Zener voltage of the MMSZ4710T1?
The MMSZ4710T1 has a nominal Zener voltage of 25 V, with a guaranteed range of 23.75 V (minimum) to 26.25 V (maximum) when tested at IZT = 50 µA and TA = 25°C. This 25 V rating makes the MMSZ4710T1 suitable for mid-range voltage reference and clamping applications where tight regulation around that value is required.
What package type does the MMSZ4710T1 use?
The MMSZ4710T1 uses the SOD−123 surface-mount package (case 425), measuring 1.60 × 2.69 × 1.16 mm. It features a cathode band for polarity identification and is rated for reflow soldering at 260°C for 10 seconds. The compact size supports high-density PCB layouts common in modern portable and automotive electronics.
Is the MMSZ4710T1 RoHS compliant and lead-free?
Yes, the MMSZ4710T1 is Pb−Free and RoHS compliant, as confirmed in the official onsemi datasheet. The "G" suffix in the full orderable part number (MMSZ4710T1G) explicitly denotes the lead-free version. This compliance meets global environmental regulations without compromising solderability or thermal performance.
What is the dynamic impedance of the MMSZ4710T1 and why does it matter?
The MMSZ4710T1 has a dynamic impedance (ZZT) of 19.0 Ω at IZ = 1 mA. This parameter reflects how much the Zener voltage changes with small variations in current - lower values indicate better regulation stability. For the MMSZ4710T1, 19.0 Ω enables precise voltage referencing in feedback networks and low-drift sensor excitation circuits.
Does the MMSZ4710T1 meet automotive qualification standards?
The base MMSZ4710T1 is not automotive-qualified, but its variant SZMMSZ4710T1G is AEC−Q101 qualified and PPAP capable. That version includes enhanced process controls, extended traceability, and automotive-specific reliability testing - making SZMMSZ4710T1G the appropriate choice for body control modules, infotainment power rails, and other automotive applications requiring certified components.
MMSZ4710T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 25 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 10 nA @ 19 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
MMSZ4710T1 FAQ
1.How can I place an order for MMSZ4710T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ4710T1 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 MMSZ4710T1 reliable?
The price and inventory of MMSZ4710T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ4710T1 is usually 5 days.
3.What payment methods are accepted for MMSZ4710T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ4710T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ4710T1?
MMSZ4710T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ4710T1 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 MMSZ4710T1?
For technical support, including MMSZ4710T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ4710T1 requirements.
6.How does Aetrix verify that MMSZ4710T1 is sourced from the original manufacturer or authorized distributors?
All MMSZ4710T1 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 MMSZ4710T1 meets industry standards.
7.What is the process for return or replacement of MMSZ4710T1?
All MMSZ4710T1 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ4710T1, 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 MMSZ4710T1 part is unused and in its original packaging.
Return procedure for MMSZ4710T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMSZ4710T1 Tags
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