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Diodes Incorporated MMSZ5233BS-7
- Part No.:
- MMSZ5233BS-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MMSZ5233BS-7.pdf
- Description:
- DIODE ZENER 6V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:3,328
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Product details
Overview
MMSZ5233BS-7 from Diodes Incorporated is a surface-mount silicon Zener diode with a nominal zener voltage of 6.0 V (5.70–6.30 V range), 200 mW power dissipation, 7 Ω zener impedance at 20 mA test current, and 5.0 µA maximum reverse leakage at 3.5 V. It is used for precision voltage regulation and reference in low-power analog circuits, including sensor biasing and ADC reference stabilization.
For engineers reviewing the MMSZ5233BS-7 datasheet, MMSZ5233BS-7 pinout, MMSZ5233BS-7 application, or MMSZ5233BS-7 equivalent, key selection criteria include zener voltage tolerance, dynamic impedance at operating current, thermal resistance (625 °C/W), and SOD-323 package compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and supply conditions. Its planar die construction ensures consistent voltage regulation and low temperature coefficient, while the SOD-323 package supports automated placement and reflow soldering.
The device delivers 6.0 V regulation at 20 mA test current with ±5% tolerance, 7 Ω dynamic impedance, and 5.0 µA leakage at VR = 3.5 V. Thermal derating begins above +25°C ambient, following a linear power derating curve down to zero dissipation at +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nominal) | 6.0 V - precise DC reference point for feedback loops or analog signal conditioning |
| Zener Voltage Range | 5.70–6.30 V - ±5% tolerance ensures predictable clamping in 3.3 V/5 V system rails |
| Power Dissipation | 200 mW - limits continuous current to ~33 mA at 6 V; suitable for low-power bias networks |
| Zener Impedance | 7 Ω @ 20 mA - low dynamic resistance maintains voltage stability under small-signal load variation |
| Reverse Leakage Current | 5.0 µA @ 3.5 V - minimal parasitic current preserves accuracy in high-impedance reference nodes |
| Thermal Resistance | 625 °C/W - requires careful PCB copper area design to avoid junction overheating at full power |
| Package | SOD-323 - 1.7 mm × 1.25 mm footprint with cathode band marking; compatible with IPC-7351B standard |
Pinout & Package
Package: SOD-323 - surface-mount plastic case, 0.004 g weight, UL 94V-0 rated, moisture sensitivity level 1, cathode indicated by band on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node when used in reverse-biased regulation |
| Cathode | Zener breakdown terminal / regulated output node | Provides stable 6.0 V relative to anode; must be biased above anode by ≥6 V to enter regulation |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures tight zener voltage distribution and repeatable breakdown characteristics across production lots |
| SOD-323 package | Enables high-density placement and compatibility with standard 0805-class pick-and-place equipment |
| 200 mW power rating | Supports regulation in battery-powered sensors and microcontroller I/O protection without heatsinking |
| Lead-free & RoHS-compliant | Meets global environmental compliance requirements for industrial and consumer end-equipment |
| Halogen- and antimony-free | Complies with "Green" definition: Br+Cl <1500 ppm, Sb <1000 ppm - supports eco-labeling programs |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller I/O Protection |
|---|---|
Use Scenario: Stabilizing bias voltage for analog front-end op-amps in temperature/humidity transducers. IC Role / Device Role / Timing Role: Zener reference diode providing fixed 6.0 V rail for precision amplifier gain-setting networks. Use Value: Low 7 Ω impedance minimizes voltage shift under 1–5 mA load variation, improving measurement repeatability. |
Use Scenario: Clamping ESD transients on 3.3 V GPIO lines of ARM Cortex-M microcontrollers. IC Role / Device Role / Timing Role: Reverse-biased voltage clamp limiting input swing to 6.3 V maximum during surge events. Use Value: 5.0 µA leakage at 3.5 V avoids loading weak pull-up networks while maintaining fast transient response. |
| Portable Medical Instrument Reference | Low-Power Battery Monitoring |
Use Scenario: Generating stable reference for 12-bit ADC measuring battery cell voltage in wearable pulse oximeters. IC Role / Device Role / Timing Role: Precision shunt reference replacing higher-cost bandgap ICs in space-constrained designs. Use Value: ±5% voltage tolerance and 625 °C/W thermal resistance allow accurate readings across –20°C to +70°C operating range. |
Use Scenario: Dividing Li-ion battery voltage (3.0–4.2 V) to match 0–3.3 V ADC input range using resistor divider with Zener-stabilized top node. IC Role / Device Role / Timing Role: Regulated voltage source fixing upper divider node to improve ratio accuracy over temperature. Use Value: 200 mW rating permits operation up to 33 mA, supporting divider currents sufficient for 12-bit noise immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C6V2 | 6.2 V nominal, ±5% tolerance, 300 mW rating, SOD-323 package | Higher power handling allows 50 mA max current; slightly higher voltage shifts feedback loop setpoint | Select when 6.2 V regulation aligns with existing feedback resistor ratios and higher current margin is needed |
| MM3Z6V2 | 6.2 V nominal, ±5% tolerance, 200 mW, SOD-323, but 15 Ω zener impedance at 5 mA | Higher dynamic impedance reduces regulation accuracy under variable load; optimized for lower test current | Prefer only where cost sensitivity outweighs regulation stability requirements in non-critical bias networks |
Compared with BZX584C6V2 and MM3Z6V2, MMSZ5233BS-7 offers tighter voltage alignment to 6.0 V systems and lowest dynamic impedance (7 Ω), making it optimal for precision analog references where load-induced voltage drift must be minimized.
Availability
MMSZ5233BS-7 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, microcontroller I/O protection, and portable medical instrument reference requiring stable component supply and RoHS-compliant sourcing.
Supply support for MMSZ5233BS-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, serving automotive, industrial, computing, and consumer markets since 1959.
MMSZ5233BS-7 belongs to the MMSZ52xxBS series of general-purpose Zener diodes designed for reliable voltage regulation and transient suppression in compact, high-volume surface-mount applications.
FAQ
What is the maximum reverse voltage that can be continuously applied without breakdown?
The MMSZ5233BS-7 has a nominal zener voltage of 6.0 V with a guaranteed range of 5.70–6.30 V. Breakdown occurs at voltages ≥5.70 V in reverse bias. Applying less than 5.70 V reverse voltage keeps the device in high-impedance blocking mode with ≤5.0 µA leakage at 3.5 V.
Can this Zener diode be used in forward conduction mode like a standard diode?
Yes - the MMSZ5233BS-7 exhibits a typical forward voltage of 0.9 V at 10 mA, matching standard silicon diode behavior. However, its primary design purpose and characterization focus on reverse-bias zener regulation, not rectification or switching.
How does ambient temperature affect its zener voltage stability?
The MMSZ5233BS-7 has a positive temperature coefficient near 6 V, meaning its zener voltage increases with temperature. The datasheet does not specify TC value, but typical 6 V Zeners exhibit +2 to +4 mV/°C drift; derating curves confirm safe operation from –65°C to +150°C.
Is the SOD-323 package compatible with standard reflow profiles for lead-free assembly?
Yes - the device is fully RoHS-compliant with matte tin plating and rated for moisture sensitivity level 1. It supports JEDEC J-STD-020D reflow profiles, including peak temperatures up to 260°C, when mounted per Diodes Incorporated's recommended pad layout (AP02001).
MMSZ5233BS-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):
- 6 V
- Tolerance:
- ±5%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3.5 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
MMSZ5233BS-7 FAQ
1.How can I place an order for MMSZ5233BS-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5233BS-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 MMSZ5233BS-7 reliable?
The price and inventory of MMSZ5233BS-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ5233BS-7 is usually 5 days.
3.What payment methods are accepted for MMSZ5233BS-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5233BS-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5233BS-7?
MMSZ5233BS-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5233BS-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 MMSZ5233BS-7?
For technical support, including MMSZ5233BS-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5233BS-7 requirements.
6.How does Aetrix verify that MMSZ5233BS-7 is sourced from the original manufacturer or authorized distributors?
All MMSZ5233BS-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 MMSZ5233BS-7 meets industry standards.
7.What is the process for return or replacement of MMSZ5233BS-7?
All MMSZ5233BS-7 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5233BS-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 MMSZ5233BS-7 part is unused and in its original packaging.
Return procedure for MMSZ5233BS-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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