My Inquiry
My Account
Diodes Incorporated MMSZ5263B-7-F
- Part No.:
- MMSZ5263B-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ5263B-7-F.pdf
- Description:
- DIODE ZENER 56V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:5,254
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMSZ5263B-7-F from Diodes Incorporated is a 500mW surface-mount Zener diode with a nominal zener voltage of 56V (53.2–58.8V range), 2.2mA test current, and 150Ω dynamic impedance at test conditions; it operates from –65°C to +150°C and is AEC-Q101 qualified for automotive power rail regulation and overvoltage clamping in DC-DC feedback networks.
For engineers reviewing the MMSZ5263B-7-F datasheet, MMSZ5263B-7-F pinout, MMSZ5263B-7-F application, or MMSZ5263B-7-F equivalent, key selection criteria include zener voltage tolerance, thermal resistance (RθJA = 350°C/W), SOD-123 package compatibility, reverse leakage (<0.1μA @ 43V), and AEC-Q101 qualification status for under-hood electronics.
Technical Context
This Zener diode functions as a precision voltage reference and overvoltage clamp in low-power analog and power management circuits. Its planar die construction ensures stable breakdown characteristics, while the SOD-123 package supports automated placement and meets RoHS, halogen-free, and AEC-Q101 reliability requirements.
The device exhibits a typical zener voltage of 56V at IZT = 2.2mA, with maximum dynamic impedance of 150Ω at that current and 1300Ω at knee current (IZK = 0.25mA). Thermal derating begins at TA = 75°C, reducing power dissipation linearly to zero at 150°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nominal) | 56 V - Stable regulation point for feedback sensing or reference generation |
| Zener Voltage Range | 53.2–58.8 V - ±5% tolerance band defining usable regulation window |
| Test Current (IZT) | 2.2 mA - Minimum current required to achieve specified VZ and ZZT |
| Zener Impedance (ZZT) | 150 Ω - Dynamic resistance affecting regulation accuracy under load transients |
| Reverse Leakage (IR) | 0.1 μA @ 43 V - Low leakage preserves bias stability in high-impedance nodes |
| Power Dissipation | 500 mW @ TL = 75°C - Maximum steady-state power before thermal shutdown in PCB-constrained layouts |
| Thermal Resistance (J-A) | 350 °C/W - Limits allowable ambient temperature rise for safe continuous operation |
Pinout & Package
Package: SOD-123 - Surface-mount plastic case with cathode band marking; dimensions: 3.55–3.85 mm length × 1.40–1.70 mm width × 2.55–2.85 mm height; moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in reverse-biased regulation configuration |
| Cathode | Zener breakdown terminal / voltage reference output | Marked with band; connects to regulated rail or feedback divider node |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control and body electronics |
| RoHS & "Green" compliance | No intentionally added lead, halogens, or antimony; UL 94V-0 flammability rating |
| Low reverse leakage | ≤0.1 μA at 43 V enables use in high-Z bias networks without signal drift |
| Automated assembly compatibility | SOD-123 footprint and matte tin plating ensure reliable reflow soldering yield |
Applications
| Automotive Engine Control Unit (ECU) Power Monitoring | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Monitoring 12V/24V battery rail voltage in ECU microcontroller supply supervision circuitry. IC Role / Device Role / Timing Role: Zener reference for comparator threshold setting in undervoltage/overvoltage detection. Use Value: Tight 56V tolerance and AEC-Q101 qualification ensure reliable fault flag generation across temperature and lifetime. | Use Scenario: Providing stable reference voltage for 4–20mA transmitter loop-powered sensors. IC Role / Device Role / Timing Role: Precision shunt regulator establishing fixed bias point for op-amp input stages. Use Value: Low 0.1μA leakage prevents loading of high-impedance sensor outputs and maintains loop accuracy. |
| Consumer Power Adapter Feedback Network | Medical Diagnostic Equipment Voltage Clamp |
Use Scenario: Secondary-side voltage sensing in isolated flyback converters for USB-C PD adapters. IC Role / Device Role / Timing Role: Zener element in optocoupler feedback divider to regulate output voltage. Use Value: 150Ω ZZT minimizes regulation error under line/load transients; SOD-123 fits compact PCB layouts. | Use Scenario: Overvoltage protection on analog front-end inputs of portable ECG monitors. IC Role / Device Role / Timing Role: Clamping diode limiting input voltage to ADC driver stage during ESD or surge events. Use Value: Fast 56V breakdown and 1300Ω ZZK at 0.25mA enable controlled clamping without latch-up risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C56LT1G | Same 56V nominal, but ±5% tolerance and 300mW rating; SOD-523 package | Lower power handling limits use in >2.2mA bias networks; smaller footprint reduces board area | Select when space-constrained and thermal load is <300mW |
| MM3Z56VT1G | 56V nominal, ±5%, 200mW rating; SOD-323 package; higher ZZT (300Ω) | Not suitable for high-accuracy references due to higher impedance and lower power margin | Choose only for non-critical clamping where cost and size outweigh regulation precision |
Compared with BZX584C56LT1G and MM3Z56VT1G, the MMSZ5263B-7-F delivers higher power margin (500mW), lower dynamic impedance (150Ω), and AEC-Q101 qualification-making it preferred for automotive and industrial feedback loops requiring long-term stability and thermal robustness.
Availability
MMSZ5263B-7-F is available at Aetrix Electronics and suitable for automotive engine control units, industrial sensor transmitters, and medical diagnostic equipment requiring stable component supply with AEC-Q101 reliability assurance.
Supply support for MMSZ5263B-7-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and consumer markets.
The MMSZ series targets cost-sensitive, high-volume Zener applications demanding AEC-Q101 qualification, RoHS compliance, and consistent parametric performance in SOD-123 packaging.
FAQ
What is the maximum reverse voltage this Zener can withstand before breakdown?
The MMSZ5263B-7-F has a nominal zener voltage of 56V with a guaranteed range of 53.2V to 58.8V at IZT = 2.2mA. It does not specify a distinct "maximum reverse voltage" beyond its breakdown region; operation above 58.8V at rated current remains within specification but increases power dissipation and thermal stress.
Is this part suitable for use in a 12V automotive system's overvoltage protection circuit?
Yes - the MMSZ5263B-7-F is AEC-Q101 qualified and rated for –65°C to +150°C operation. In a 12V system, it serves as a secondary clamp (e.g., protecting against load dump transients up to 60V), provided series current limiting and thermal design accommodate its 500mW dissipation limit.
Does the SOD-123 package support hand-soldering during prototyping?
Yes - the SOD-123 package is compatible with hand-soldering using fine-tip irons and flux; its 1.4–1.7mm width and cathode band allow visual polarity identification. However, reflow profile adherence is recommended for production to ensure matte tin plating integrity and void-free joints.
How does the 150Ω zener impedance affect regulation accuracy in a feedback divider?
A 150Ω dynamic impedance introduces voltage error proportional to current variation through the Zener. In a feedback divider drawing 2.2mA, a ±0.5mA load shift causes ~75mV error - acceptable for ±1% output regulation but insufficient for sub-0.5% precision without additional buffering or compensation.
MMSZ5263B-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 56 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 150 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 43 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-123
MMSZ5263B-7-F FAQ
1.How can I place an order for MMSZ5263B-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5263B-7-F 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 MMSZ5263B-7-F reliable?
The price and inventory of MMSZ5263B-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ5263B-7-F is usually 5 days.
3.What payment methods are accepted for MMSZ5263B-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5263B-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5263B-7-F?
MMSZ5263B-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5263B-7-F 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 MMSZ5263B-7-F?
For technical support, including MMSZ5263B-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5263B-7-F requirements.
6.How does Aetrix verify that MMSZ5263B-7-F is sourced from the original manufacturer or authorized distributors?
All MMSZ5263B-7-F 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 MMSZ5263B-7-F meets industry standards.
7.What is the process for return or replacement of MMSZ5263B-7-F?
All MMSZ5263B-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5263B-7-F, 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 MMSZ5263B-7-F part is unused and in its original packaging.
Return procedure for MMSZ5263B-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMSZ5263B-7-F Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
