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Diodes Incorporated MMSZ5232BS-7
- Part No.:
- MMSZ5232BS-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MMSZ5232BS-7.pdf
- Description:
- DIODE ZENER 5.6V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,681
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Product details
Overview
MMSZ5232BS-7 from Diodes Incorporated is a surface-mount silicon Zener diode with a nominal zener voltage of 5.6 V, ±5% tolerance (5.32–5.88 V), 200 mW power dissipation, and 11 Ω dynamic impedance at 20 mA test current. It operates from –65 °C to +150 °C and is used for voltage regulation and reference in low-power analog circuits, power supply feedback loops, and overvoltage protection.
For engineers reviewing the MMSZ5232BS-7 datasheet, MMSZ5232BS-7 pinout, MMSZ5232BS-7 application, or MMSZ5232BS-7 equivalent, key selection criteria include zener voltage accuracy, low dynamic impedance at 20 mA, SOD-323 package compatibility with automated assembly, and compliance with RoHS, halogen-free, and antimony-free "Green" requirements.
Technical Context
This Zener diode employs planar die construction for stable breakdown characteristics and low leakage. Its 5.6 V nominal zener voltage is specified at 20 mA test current (IZT), with maximum reverse leakage of 5.0 µA at 3.0 V (VR) and forward voltage of 0.9 V at 10 mA (IF).
Thermal resistance is 625 °C/W (junction-to-ambient, on FR-4 board with recommended pad layout), and power derating begins linearly above +25 °C ambient per Figure 1. The device exhibits typical capacitance of ~30 pF at 0 V bias (f = 1 MHz) and maintains <1600 Ω impedance at knee current (0.25 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nom) | 5.6 V - precise reference voltage for feedback and clamping in 5 V systems |
| Zener Voltage Range | 5.32–5.88 V - ±5% tolerance ensures predictable regulation under production variance |
| Test Current (IZT) | 20 mA - standard operating point where zener voltage and impedance are guaranteed |
| Zener Impedance (ZZT) | 11 Ω - low dynamic resistance enables stable regulation under load transients |
| Power Dissipation | 200 mW - limits thermal rise on standard PCB layouts without heatsinking |
| Reverse Leakage (IR) | 5.0 µA @ 3.0 V - minimal error current in high-impedance reference nodes |
| Operating Temp Range | –65 °C to +150 °C - supports industrial and automotive under-hood environments |
Pinout & Package
Package: SOD-323 - ultra-small plastic surface-mount case (2.30–2.70 mm length × 1.20–1.40 mm width × 0.25–0.35 mm height), UL 94V-0 rated, moisture sensitivity level 1, cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference | Connected to lower-potential node in reverse-biased regulation configuration |
| Cathode | Zener breakdown terminal / voltage reference output | Provides stable 5.6 V reference when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable zener voltage distribution and long-term stability across temperature cycles |
| SOD-323 package | Enables high-density PCB layouts and compatibility with standard pick-and-place equipment |
| Lead-free & RoHS compliant | Meets global environmental regulations without compromising solderability or reliability |
| Halogen- and antimony-free "Green" | Contains <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - satisfies stringent eco-materials standards |
Applications
| Power Supply Feedback | Overvoltage Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated DC-DC converters using optocoupler feedback. IC Role / Device Role / Timing Role: Zener reference providing precise 5.6 V threshold to TL431 or optocoupler LED drive circuit. Use Value: Maintains ±1% output regulation across line/load/temperature with low ZZT minimizing feedback loop error. | Use Scenario: Protecting microcontroller I/O pins from ESD-induced voltage spikes. IC Role / Device Role / Timing Role: Low-capacitance (≈30 pF) shunt clamp limiting transient voltage to ≤5.88 V. Use Value: Prevents latch-up or damage while adding negligible signal distortion in 10–100 MHz digital interfaces. |
| Low-Power Voltage Reference | Current Source Biasing |
Use Scenario: Generating stable bias for op-amp input stages in battery-powered sensor front-ends. IC Role / Device Role / Timing Role: Provides 5.6 V reference to resistor-divider network setting amplifier gain and offset. Use Value: Delivers <5 µA leakage and 11 Ω impedance to minimize drift and noise contribution in µA-level bias networks. | Use Scenario: Setting constant current for LED indicator circuits in industrial HMIs. IC Role / Device Role / Timing Role: Zener-based two-resistor current source delivering 1–5 mA to discrete LEDs. Use Value: Enables accurate current control with <±5% variation across temperature due to tight VZ tolerance and low thermal coefficient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C5V6 | Same 5.6 V nominal, ±5% tolerance, but SOD-523 package (slightly larger footprint) | Higher 300 mW power rating allows higher current operation | Select when >200 mW dissipation or legacy SOD-523 layout compatibility is required |
| MMBZ5232BS | Identical electrical specs and SOD-323 package, but marked "BS" suffix variant with same E2 code | No functional difference - alternate ordering designation within same Diodes Inc. product family | Select when sourcing flexibility or dual-sourcing strategy requires second-source part number |
Compared with BZX584-C5V6 and MMBZ5232BS, the MMSZ5232BS-7 offers optimal balance of space-constrained SOD-323 packaging, 200 mW rating matched to low-power designs, and full "Green" compliance - making it preferred for high-density consumer and portable electronics where footprint and environmental specs are critical.
Availability
MMSZ5232BS-7 is available at Aetrix Electronics and suitable for power supply feedback, overvoltage clamp, and low-power voltage reference applications requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for MMSZ5232BS-7 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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The MMSZ52xxBS series belongs to Diodes' general-purpose Zener diode product line, engineered for cost-effective, high-reliability voltage regulation in space-constrained, high-volume applications such as consumer power adapters and industrial controls.
FAQ
What is the cathode marking convention for MMSZ5232BS-7?
The cathode is identified by a single black band on the SOD-323 package body, aligned with the cathode terminal. This matches industry-standard polarity marking for surface-mount Zener diodes and must be oriented toward the higher-potential node in reverse-bias regulation configurations.
Can MMSZ5232BS-7 be used in place of a 5.1 V Zener in an existing design?
No - its nominal 5.6 V zener voltage differs significantly from 5.1 V devices like MMSZ5231BS. Substitution would shift regulation thresholds, potentially causing overvoltage or undervoltage conditions. Always verify system-level voltage margins before interchanging Zener voltages.
What is the maximum continuous reverse current before thermal runaway?
At 25 °C ambient, the absolute maximum reverse current is limited by the 200 mW power rating: IMAX ≈ 200 mW / 5.6 V ≈ 35.7 mA. Derating applies above 25 °C per Figure 1; at 85 °C ambient, max current drops to ~22 mA to maintain safe junction temperature.
Does MMSZ5232BS-7 require external series resistance in typical applications?
Yes - a current-limiting resistor is mandatory to set operating current within the 0.25–20 mA range. For example, with 12 V supply and 5.6 V output, a 330 Ω resistor delivers ~19.4 mA, keeping power dissipation near 109 mW and ensuring stable regulation within specified ZZT.
MMSZ5232BS-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 200 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
MMSZ5232BS-7 FAQ
1.How can I place an order for MMSZ5232BS-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5232BS-7 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 MMSZ5232BS-7 reliable?
The price and inventory of MMSZ5232BS-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ5232BS-7 is usually 5 days.
3.What payment methods are accepted for MMSZ5232BS-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5232BS-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5232BS-7?
MMSZ5232BS-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5232BS-7 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 MMSZ5232BS-7?
For technical support, including MMSZ5232BS-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5232BS-7 requirements.
6.How does Aetrix verify that MMSZ5232BS-7 is sourced from the original manufacturer or authorized distributors?
All MMSZ5232BS-7 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 MMSZ5232BS-7 meets industry standards.
7.What is the process for return or replacement of MMSZ5232BS-7?
All MMSZ5232BS-7 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5232BS-7, 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 MMSZ5232BS-7 part is unused and in its original packaging.
Return procedure for MMSZ5232BS-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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