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Diodes Incorporated MMSZ5223BS-7
- Part No.:
- MMSZ5223BS-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MMSZ5223BS-7.pdf
- Description:
- DIODE ZENER 2.7V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,469
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Product details
Overview
MMSZ5223BS-7 from Diodes Incorporated is a surface-mount 2.7 V Zener diode in SOD-323 package, rated for 200 mW power dissipation, 30 Ω maximum zener impedance at 20 mA test current, and 75 µA maximum reverse leakage at 1.0 V reverse voltage. It provides precision voltage reference and overvoltage protection in low-power analog signal conditioning circuits.
For engineers reviewing the MMSZ5223BS-7 datasheet, MMSZ5223BS-7 pinout, MMSZ5223BS-7 application, or MMSZ5223BS-7 equivalent, key selection criteria include nominal zener voltage tolerance (±4.4%), thermal resistance (625 °C/W), cathode-band polarity marking, JEDEC-compliant SOD-323 footprint, and RoHS/halogen-free compliance for consumer and industrial PCB assembly.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under controlled current conditions. Its planar die construction ensures consistent breakdown characteristics and low dynamic impedance (30 Ω at IZT = 20 mA) with minimal temperature drift over −65 °C to +150 °C operating range.
The device exhibits 1300 Ω maximum zener impedance at knee current (IZK = 0.25 mA), enabling reliable regulation even at low bias currents. Its 0.004 g mass and UL 94V-0 molded plastic case support high-density automated placement and reflow soldering on FR-4 PCBs with recommended pad layout AP02001.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nominal) | 2.7 V - Stable reference voltage at 20 mA test current, ±4.4% tolerance band (2.57–2.84 V) |
| Power Dissipation | 200 mW - Maximum continuous DC power handling on standard FR-4 board with AP02001 pad layout |
| Zener Impedance | 30 Ω @ 20 mA - Low dynamic resistance ensures minimal output voltage variation under load changes |
| Reverse Leakage | 75 µA @ 1.0 V - Confirms tight blocking behavior below breakdown threshold for low-quiescent circuits |
| Thermal Resistance | 625 °C/W - Junction-to-ambient value defines derating slope: full power only at TA ≤ +25 °C |
| Operating Temperature | −65 °C to +150 °C - Enables use in automotive under-hood and industrial control 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 thickness), cathode indicated by band on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in reverse-bias configuration; forms reference ground return path |
| Cathode | Breakdown voltage terminal / Zener output node | Marked with band; delivers regulated 2.7 V when biased above 1.0 V with current-limiting resistor |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable zener voltage distribution and long-term stability under thermal cycling |
| SOD-323 package | Enables 0.65 mm pitch PCB layouts and compatibility with standard 8 mm tape-and-reel feeders (3000/reel) |
| Lead-free & RoHS compliant | Meets EU Directive 2011/65/EU with <900 ppm Br/Cl and <1000 ppm Sb compounds |
| Moisture sensitivity Level 1 | Eliminates bake preconditioning prior to reflow; safe for standard J-STD-020D profile |
Applications
| Portable Battery Monitoring | USB-C Power Delivery Reference |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage in wearables using microcontroller ADC with internal 3.3 V reference. IC Role / Device Role: Provides 2.7 V precision shunt reference to scale ADC input range and improve measurement resolution. Use Value: Tight 2.57–2.84 V tolerance avoids calibration drift across temperature; 75 µA leakage minimizes battery drain in sleep mode. |
Use Scenario: Setting VCONN detection threshold in USB-C receptacle circuits. IC Role / Device Role: Acts as voltage clamp to define logic-high threshold for CC line state machine. Use Value: 30 Ω zener impedance ensures fast response to transient overvoltage events without latch-up risk. |
| Industrial Sensor Signal Conditioning | Low-Power IoT Node Voltage Regulation |
Use Scenario: Biasing op-amp inputs in 4–20 mA loop transmitters operating from 24 V supply. IC Role / Device Role: Supplies stable 2.7 V reference for DAC output scaling and offset correction. Use Value: 625 °C/W thermal resistance allows operation up to +85 °C ambient without derating in sealed enclosures. |
Use Scenario: Regulating supply to BLE SoC during RF transmit bursts in coin-cell-powered trackers. IC Role / Device Role: Shunt regulator maintaining 2.7 V rail when LDO dropout occurs under peak current demand. Use Value: 1300 Ω impedance at 0.25 mA knee current enables regulation down to 10 µA quiescent current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B2V7 | Same 2.7 V nominal, but 300 mW rating and SOD-323 package; 20 Ω max ZZT at 5 mA | Higher power margin supports higher current reference loads; lower test current eases bias resistor selection | Prefer when >10 mA reference current or extended thermal margin required |
| MMBZ5223BS | Identical electrical specs but SOT-23 package (3-pin); anode/cathode pins differ; 350 mW rating | Larger footprint accommodates manual prototyping; higher PD allows parallel use in higher-current rails | Choose for breadboard evaluation or where SOT-23 pick-and-place infrastructure exists |
Compared with BZX384-B2V7 and MMBZ5223BS, MMSZ5223BS-7 offers the smallest footprint and strictest RoHS/halogen compliance, making it optimal for space-constrained, high-volume consumer PCBs where 200 mW dissipation suffices.
Availability
MMSZ5223BS-7 is available at Aetrix Electronics and suitable for portable battery monitoring, USB-C power delivery reference, industrial sensor signal conditioning, and low-power IoT node voltage regulation requiring stable component supply across production lifecycles.
Supply support for MMSZ5223BS-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 and manufacturing operations across Asia and the Americas.
The MMSZ52xxBS series belongs to Diodes' general-purpose Zener diode product line, engineered for cost-sensitive, high-reliability voltage reference and protection functions in consumer, computing, and industrial end equipment.
FAQ
What is the maximum reverse voltage before breakdown for MMSZ5223BS-7?
The device maintains less than 75 µA leakage up to 1.0 V reverse voltage. Breakdown begins near 2.57 V (minimum specified zener voltage), with full regulation established at 20 mA test current. Operation below 1.0 V reverse ensures negligible current flow and no power dissipation.
Can MMSZ5223BS-7 be used in place of a 2.5 V Zener diode?
No - its nominal zener voltage is 2.7 V with a guaranteed range of 2.57–2.84 V. Substituting it for a 2.5 V part would shift reference levels by ≥70 mV, potentially violating ADC input range or comparator thresholds. Use MMSZ5221BS (2.4 V nominal) instead.
Does this Zener diode require a current-limiting resistor in all applications?
Yes - it must always be used with a series resistor to limit forward or reverse current to within 200 mW dissipation. For example, with a 5 V supply and 2.7 V zener, a minimum 115 Ω resistor limits current to 20 mA. Omitting the resistor risks immediate thermal failure.
Is the SOD-323 package compatible with standard reflow profiles?
Yes - its moisture sensitivity level is Level 1 per J-STD-020D, meaning it can be processed using standard lead-free reflow profiles (peak 260 °C) without baking. The matte tin finish on Alloy 42 leads ensures reliable solder wetting and joint integrity on ENIG and HASL finishes.
MMSZ5223BS-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):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 75 µA @ 1 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
MMSZ5223BS-7 FAQ
1.How can I place an order for MMSZ5223BS-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5223BS-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 MMSZ5223BS-7 reliable?
The price and inventory of MMSZ5223BS-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ5223BS-7 is usually 5 days.
3.What payment methods are accepted for MMSZ5223BS-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5223BS-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5223BS-7?
MMSZ5223BS-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5223BS-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 MMSZ5223BS-7?
For technical support, including MMSZ5223BS-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5223BS-7 requirements.
6.How does Aetrix verify that MMSZ5223BS-7 is sourced from the original manufacturer or authorized distributors?
All MMSZ5223BS-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 MMSZ5223BS-7 meets industry standards.
7.What is the process for return or replacement of MMSZ5223BS-7?
All MMSZ5223BS-7 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5223BS-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 MMSZ5223BS-7 part is unused and in its original packaging.
Return procedure for MMSZ5223BS-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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