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Diodes Incorporated MMSZ5223B-7
- Part No.:
- MMSZ5223B-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ5223B-7.pdf
- Description:
- DIODE ZENER 2.7V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:5,553
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Product details
Overview
MMSZ5223B-7 from Diodes Incorporated is a 2.7 V, 500 mW surface-mount Zener diode in SOD-123 package, rated for 20 mA test current with 30 Ω dynamic impedance at 1 kHz and 75 µA reverse leakage at 1.0 V, widely used for voltage regulation and reference in low-power analog circuits.
For engineers reviewing the MMSZ5223B-7 datasheet, MMSZ5223B-7 pinout, MMSZ5223B-7 application, or MMSZ5223B-7 equivalent, key selection criteria include nominal Zener voltage tolerance (±4.4%), thermal resistance (338 °C/W), AEC-Q101 qualification status, and SOD-123 footprint compatibility with automated assembly.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load and temperature conditions. It features a cathode band polarity marking, matte tin-plated alloy 42 leadframe, and green molding compound compliant with RoHS, halogen-free, and antimony-free requirements.
The device delivers precise 2.7 V regulation with ±4.4% tolerance over 20 mA test current, exhibits 1,300 Ω knee impedance at 0.25 mA, and supports operation from –65 °C to +150 °C. Its power derating curve specifies 500 mW at 75 °C lead temperature and 370 mW at 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.7 V nominal, 2.57–2.84 V range at 20 mA - defines regulated output voltage tolerance for reference design |
| Power Dissipation (PD) | 370 mW @ TA = 25 °C - sets maximum continuous power in standard PCB layout |
| Zener Impedance (ZZT) | 30 Ω @ 1 kHz, 20 mA - indicates voltage stability under small-signal AC ripple |
| Reverse Leakage (IR) | 75 µA @ VR = 1.0 V - determines minimum bias current needed before breakdown onset |
| Thermal Resistance (RθJA) | 338 °C/W - quantifies junction-to-ambient temperature rise per watt on FR-4 board |
| Operating Temperature | –65 °C to +150 °C - enables use in automotive under-hood and industrial control environments |
Pinout & Package
Package: SOD-123 - surface-mount plastic case with cathode band marking, 0.01 g weight, UL 94V-0 flammability rating, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to lower-potential node; reverse-biased configuration requires anode to be at lower voltage than cathode |
| Cathode | Breakdown voltage reference terminal | Marked by band; supplies regulated 2.7 V relative to anode when reverse biased above knee voltage |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW power dissipation at TL = 75 °C | Enables robust voltage clamping in transient-suppression circuits without heatsinking |
| AEC-Q101 qualified | Validated for automotive electronics applications including body control modules and sensor interfaces |
| SOD-123 footprint | Supports high-speed pick-and-place assembly and reflow soldering per J-STD-020 Level 1 |
| Halogen- and antimony-free "Green" compound | Meets IEC 61249-2-21 and IPC-4101D environmental compliance for end-of-life recycling |
Applications
| Automotive Sensor Reference | Industrial Power Supply Monitor |
|---|---|
Use Scenario: Providing stable 2.7 V reference for analog front-end of tire pressure monitoring system (TPMS) sensors. IC Role / Device Role / Timing Role: Zener voltage reference for ADC biasing and signal conditioning circuitry. Use Value: Tight 2.57–2.84 V tolerance ensures <0.5% reference error across temperature, critical for pressure measurement accuracy. | Use Scenario: Monitoring 3.3 V rail in programmable logic controller (PLC) I/O module using resistor-divider + comparator. IC Role / Device Role / Timing Role: Precision shunt reference enabling rail-failure detection at 2.7 V threshold. Use Value: Low 75 µA leakage at 1.0 V allows high-impedance divider design, minimizing standby current draw. |
| USB-C Port Protection | IoT Node Voltage Clamp |
Use Scenario: Clamping transient overvoltage on USB-C CC line during hot-plug events. IC Role / Device Role / Timing Role: Low-energy shunt clamp limiting voltage to safe 2.7 V level before ESD protection diode triggers. Use Value: 30 Ω Zener impedance ensures fast response to sub-100 ns transients without overshoot. | Use Scenario: Regulating supply to ultra-low-power microcontroller reset circuit in battery-powered smart meter. IC Role / Device Role / Timing Role: Standby-mode voltage reference for brown-out detector with minimal quiescent current. Use Value: –65 °C to +150 °C operating range supports outdoor deployment in unheated enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C2V7 | 2.7 V, 300 mW, SOD-323 package, 90 Ω ZZT | Lower power rating and higher impedance limit use in precision references | Select when board space is constrained and 300 mW suffices |
| MM3Z2V7 | 2.7 V, 200 mW, SOD-323, 100 Ω ZZT, no AEC-Q101 qualification | Lacks automotive qualification and thermal robustness for under-hood use | Prefer for cost-sensitive consumer electronics where qualification is not required |
Compared with BZX584C2V7 and MM3Z2V7, MMSZ5223B-7 offers higher power handling (370 mW), lower impedance (30 Ω), and AEC-Q101 qualification-making it optimal for automotive and industrial designs requiring reliability and thermal margin.
Availability
MMSZ5223B-7 is available at Aetrix Electronics and suitable for automotive sensor reference, industrial power supply monitor, and IoT node voltage clamp applications requiring stable component supply and long-term lifecycle support.
Supply support for MMSZ5223B-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 integrated circuits, headquartered in Plano, Texas, serving automotive, industrial, computing, and consumer markets with high-reliability components.
MMSZ5223B-7 belongs to the MMSZ52xxB series of general-purpose Zener diodes designed for medium-current voltage regulation and reference in space-constrained, high-volume surface-mount applications.
FAQ
What is the Zener voltage tolerance for MMSZ5223B-7?
The MMSZ5223B-7 has a nominal Zener voltage of 2.7 V with a guaranteed range of 2.57 V to 2.84 V at 20 mA test current, corresponding to ±4.4% tolerance. This specification is validated per DS18010 Rev. 28 and applies under standard 25 °C ambient conditions with specified thermal mounting.
Is MMSZ5223B-7 suitable for automotive applications?
Yes, the MMSZ5223B-7 is qualified to AEC-Q101 standards for high-reliability automotive use. Its construction includes green molding compound, matte tin plating, and full RoHS compliance, and it operates across –65 °C to +150 °C, meeting requirements for engine control units and body electronics.
How does thermal derating affect MMSZ5223B-7's power handling?
At 25 °C ambient, MMSZ5223B-7 dissipates up to 370 mW; at 75 °C lead temperature, it supports 500 mW. Derating follows a linear curve down to zero at 150 °C junction temperature. Designers must apply the 338 °C/W RθJA value with appropriate copper pad layout to ensure safe operation.
Can MMSZ5223B-7 replace MMSZ5221B in existing designs?
No-MMSZ5221B is a 2.4 V Zener (2.28–2.52 V range), while MMSZ5223B-7 is 2.7 V (2.57–2.84 V). Substituting changes reference voltage by 0.3 V, potentially causing ADC offset errors or comparator trip-point shifts. Circuit recalibration or resistor-divider adjustment would be required.
MMSZ5223B-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 500 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-123
MMSZ5223B-7 FAQ
1.How can I place an order for MMSZ5223B-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5223B-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 MMSZ5223B-7 reliable?
The price and inventory of MMSZ5223B-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ5223B-7 is usually 5 days.
3.What payment methods are accepted for MMSZ5223B-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5223B-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5223B-7?
MMSZ5223B-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5223B-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 MMSZ5223B-7?
For technical support, including MMSZ5223B-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5223B-7 requirements.
6.How does Aetrix verify that MMSZ5223B-7 is sourced from the original manufacturer or authorized distributors?
All MMSZ5223B-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 MMSZ5223B-7 meets industry standards.
7.What is the process for return or replacement of MMSZ5223B-7?
All MMSZ5223B-7 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5223B-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 MMSZ5223B-7 part is unused and in its original packaging.
Return procedure for MMSZ5223B-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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