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Diodes Incorporated MMSZ5232BQ-7-F
- Part No.:
- MMSZ5232BQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ5232BQ-7-F.pdf
- Description:
- DIODE ZENER 5.6V 370MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:19,212
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Product details
Overview
MMSZ5232BQ-7-F from Diodes Incorporated is an AEC-Q101 qualified 5.6 V, 500 mW surface-mount Zener diode in SOD123 package, rated for 20 mA test current, 11 Ω dynamic impedance at 20 mA, and 5 µA reverse leakage at 3.0 V, used for precision voltage regulation and reference in automotive power supply rails.
For engineers reviewing the MMSZ5232BQ-7-F datasheet, MMSZ5232BQ-7-F pinout, MMSZ5232BQ-7-F application, or MMSZ5232BQ-7-F equivalent, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (338 °C/W), automotive qualification status, SOD123 footprint compatibility, and low leakage performance under bias.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across load variations and temperature shifts. Its 5.6 V nominal Zener voltage exhibits a positive temperature coefficient of +0.04 %/°C per Figure 6, enabling predictable drift behavior in feedback networks.
Designed for medium-current regulation, it delivers 11 Ω impedance at 20 mA test current and supports up to 370 mW dissipation at 25°C ambient. The SOD123 package enables automated placement while maintaining thermal performance via 1-inch FR-4 copper pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.6 V nominal, 5.32–5.88 V range at 20 mA - ensures ±5% regulation tolerance in feedback loops |
| Power Dissipation | 370 mW at TA = 25°C - defines maximum continuous DC power in standard PCB layout |
| Zener Impedance (ZZT) | 11 Ω at IZT = 20 mA - determines output voltage stability under load transients |
| Reverse Leakage (IR) | 5 µA at VR = 3.0 V - critical for low-power standby circuits and high-impedance references |
| Thermal Resistance (RθJA) | 338 °C/W - quantifies junction-to-ambient rise per watt, guiding thermal design on FR-4 boards |
| Operating Temperature | −65°C to +150°C - supports under-hood automotive environments and industrial control enclosures |
Pinout & Package
Package: SOD123 - surface-mount plastic case with cathode band marking, 1.55 mm width, 2.65 mm length, 1.05 mm height, matte tin-plated Alloy 42 leadframe, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node in shunt regulator configuration |
| Cathode | Reverse-biased Zener terminal / regulated output node | Connected to input rail through current-limiting resistor; provides stable 5.6 V reference |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics including engine control units and body modules |
| Green compound packaging | Halogen- and antimony-free molding compound compliant with RoHS 2 and JEDEC J-STD-020 |
| Low dynamic impedance | 11 Ω at 20 mA enables tight regulation in 12 V automotive supply monitoring circuits |
| Cathode band polarity marking | Visible visual indicator on top surface ensures correct orientation during automated assembly |
| Lead-free plating | Matte tin finish over Alloy 42 leadframe meets MIL-STD-202 solderability requirements |
Applications
| Automotive ECU Power Monitoring | Industrial Sensor Reference Supply |
|---|---|
Use Scenario: Monitoring 12 V battery rail in engine control units to detect undervoltage conditions. IC Role / Device Role / Timing Role: Shunt Zener reference providing stable 5.6 V threshold for comparator input. Use Value: Enables accurate detection within ±0.28 V tolerance across −40°C to +125°C operating range. |
Use Scenario: Providing excitation voltage for resistive temperature detectors (RTDs) in PLC analog input modules. IC Role / Device Role / Timing Role: Precision voltage reference source for ratiometric ADC conversion. Use Value: Delivers <5 µA leakage at 3 V bias, minimizing error contribution in high-impedance sensor bridges. |
| Consumer Power Adapter Feedback | Medical Diagnostic Instrument Bias |
Use Scenario: Secondary-side voltage regulation in isolated flyback converters for USB-C chargers. IC Role / Device Role / Timing Role: Zener-based optocoupler feedback reference for TL431 replacement in cost-sensitive designs. Use Value: Achieves 11 Ω impedance at 20 mA, supporting fast transient response without external compensation. |
Use Scenario: Biasing photodiode amplifiers in portable blood oximetry devices. IC Role / Device Role / Timing Role: Low-noise, low-leakage voltage clamp protecting amplifier inputs from overvoltage events. Use Value: Maintains 5 µA max reverse leakage at 3 V, preserving signal integrity in microamp-level current paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C5V6LT1G | 5.6 V ±5%, 300 mW, SOD-323 package, 40 Ω ZZT at 5 mA | Lower power rating and higher impedance limit use to low-current biasing only | Select when board space is constrained and regulation load ≤5 mA |
| MMBZ5232BS-7-F | Same 5.6 V spec, but SOT-23 package, 350 mW rating, 15 Ω ZZT at 20 mA | Larger footprint and higher thermal resistance (400 °C/W) reduce power handling on dense layouts | Prefer for legacy SOT-23 footprints where rework compatibility outweighs thermal efficiency |
Compared with BZX584C5V6LT1G and MMBZ5232BS-7-F, MMSZ5232BQ-7-F offers superior thermal performance (338 °C/W vs. ≥400 °C/W) and lower dynamic impedance (11 Ω), making it optimal for automotive-grade 20 mA regulation where stability under temperature cycling is critical.
Availability
MMSZ5232BQ-7-F is available at Aetrix Electronics and suitable for automotive ECU power monitoring, industrial sensor reference supplies, and consumer power adapter feedback requiring stable component supply with AEC-Q101 compliance and SOD123 footprint consistency.
Supply support for MMSZ5232BQ-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 computing markets with ISO/TS 16949 and ISO 14001 certifications.
MMSZ5232BQ-7-F belongs to the MMSZ52xxB automotive Zener series, engineered for robust voltage reference performance in harsh environments where AEC-Q101 qualification, low leakage, and thermal stability are mandatory.
FAQ
What is the maximum continuous Zener current for MMSZ5232BQ-7-F at 85°C ambient?
At TA = 85°C, derated power is 250 mW (per Figure 1). With VZ = 5.6 V, maximum continuous current is ~44.6 mA. This assumes FR-4 PCB with 1-inch copper pad; actual current must respect thermal limits and avoid exceeding 150°C junction temperature.
Does MMSZ5232BQ-7-F have a specified capacitance value?
No capacitance specification is provided in DS18010 Rev. 28. Figure 4 shows typical total capacitance decreasing with Zener voltage - for 5.6 V devices, estimated CT is ~30 pF at 0 V bias - but this is not a guaranteed parameter and should not be used in timing-critical AC applications.
How does the temperature coefficient affect regulation accuracy over −40°C to +125°C?
Per Figure 6, MMSZ5232B has +0.04 %/°C TC. Over 165°C span, voltage drift is ~66 mV (1.18% of 5.6 V), resulting in final VZ range of ~5.53–5.67 V. This is acceptable for non-precision reference use but insufficient for <0.1% accuracy systems.
Can MMSZ5232BQ-7-F replace MMSZ5232B-7-F in existing designs?
Yes - the "Q" suffix denotes AEC-Q101 qualification; all electrical specs, package dimensions, and marking are identical. The Q version adds automotive reliability testing (HTOL, TCT, ESD) but maintains full form-fit-function compatibility with the commercial-grade MMSZ5232B-7-F.
MMSZ5232BQ-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):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 370 mW
- Impedance (Max) (Zzt):
- 11 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
MMSZ5232BQ-7-F FAQ
1.How can I place an order for MMSZ5232BQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5232BQ-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 MMSZ5232BQ-7-F reliable?
The price and inventory of MMSZ5232BQ-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 MMSZ5232BQ-7-F is usually 5 days.
3.What payment methods are accepted for MMSZ5232BQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5232BQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5232BQ-7-F?
MMSZ5232BQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5232BQ-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 MMSZ5232BQ-7-F?
For technical support, including MMSZ5232BQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5232BQ-7-F requirements.
6.How does Aetrix verify that MMSZ5232BQ-7-F is sourced from the original manufacturer or authorized distributors?
All MMSZ5232BQ-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 MMSZ5232BQ-7-F meets industry standards.
7.What is the process for return or replacement of MMSZ5232BQ-7-F?
All MMSZ5232BQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5232BQ-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 MMSZ5232BQ-7-F part is unused and in its original packaging.
Return procedure for MMSZ5232BQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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