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Diodes Incorporated MMSZ5223B-7-F
- Part No.:
- MMSZ5223B-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ5223B-7-F.pdf
- Description:
- DIODE ZENER 2.7V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:43,164
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Product details
Overview
MMSZ5223B-7-F from Diodes Incorporated is a 2.7 V, 500 mW surface-mount Zener diode in SOD123 package, rated for 20 mA test current with 1.3 kΩ dynamic impedance at 1 kHz and 75 µA reverse leakage at 1.0 V reverse bias. It serves as a precision voltage reference or overvoltage clamp in low-power analog signal conditioning and power rail stabilization circuits.
For engineers reviewing the MMSZ5223B-7-F datasheet, MMSZ5223B-7-F pinout, MMSZ5223B-7-F application, or MMSZ5223B-7-F equivalent, this part delivers verified 2.7 V regulation with ±4.4% tolerance, AEC-Q101 qualification for automotive use, RoHS-compliant green packaging, and thermal performance validated up to +150°C junction temperature.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its 2.7 V nominal Zener voltage is specified at 20 mA test current, with 1.3 kΩ impedance at that point and 1,300 Ω knee impedance at 0.25 mA, ensuring predictable regulation onset.
The device exhibits a negative temperature coefficient typical of low-voltage Zeners, with TC ≈ −0.06 %/°C near 2.7 V (per Figure 6), and is characterized for operation from −65°C to +150°C with 338 °C/W junction-to-ambient thermal resistance on FR-4 PCB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.7 V nominal, 2.57–2.84 V min/max range at 20 mA - defines precise clamping threshold for 3.3 V rail monitoring or sensor biasing. |
| Power Dissipation | 370 mW @ TA = +25°C - sets maximum continuous DC power handling on standard PCB layout. |
| Zener Impedance (ZZT) | 1.3 kΩ @ 20 mA, 1 kHz - determines AC regulation stability in feedback loops or noise-sensitive references. |
| Reverse Leakage (IR) | 75 µA @ VR = 1.0 V - confirms low standby current draw in battery-powered voltage detection circuits. |
| Thermal Resistance (RθJA) | 338 °C/W - enables thermal derating calculation for ambient temperatures above +25°C per Figure 1. |
| Operating Temperature | −65°C to +150°C - supports deployment in under-hood automotive modules and industrial control enclosures. |
Pinout & Package
Package: SOD123 - surface-mount plastic case with cathode band marking, 0.01 g weight, UL 94V-0 flammability rating, and matte tin-plated Alloy 42 leadframe.
| 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 | Zener breakdown terminal / voltage regulation output | Marked by band; connected to higher-potential rail to clamp excess voltage or establish reference potential. |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW power dissipation capability | Enables robust transient suppression in 3.3 V I/O protection without thermal shutdown under pulse loads. |
| AEC-Q101 qualification | Validates reliability for automotive body electronics, infotainment power supplies, and ADAS sensor interfaces. |
| Halogen- and antimony-free "Green" compound | Meets strict environmental compliance (Br+Cl <1500 ppm, Sb <1000 ppm) for global OEM supply chains. |
| SOD123 footprint compatibility | Supports automated pick-and-place assembly with industry-standard 2.65 mm × 1.55 mm land pattern. |
Applications
| USB Port Overvoltage Protection | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Clamping 5 V USB VBUS transients to prevent damage to downstream 3.3 V logic. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to shunt surge energy above 2.7 V threshold. Use Value: Limits peak voltage to safe level while drawing <75 µA at 1.0 V, minimizing quiescent loading on host supply. |
Use Scenario: Generating clean, temperature-stable reset signal during 3.3 V rail power-up and brownout. IC Role / Device Role / Timing Role: Precision voltage reference feeding RC delay network into microcontroller reset pin. Use Value: Provides 2.7 V threshold with ±4.4% tolerance and −0.06 %/°C TC, enabling reliable reset assertion across −40°C to +85°C. |
| Industrial Sensor Signal Conditioning | Automotive LIN Bus Interface Clamp |
Use Scenario: Biasing op-amp input stage in 4–20 mA transmitter with stable reference voltage. IC Role / Device Role / Timing Role: Low-noise Zener reference source for current-loop DAC output scaling. Use Value: Delivers 1.3 kΩ impedance at 20 mA, reducing AC error contribution in 1 kHz bandwidth analog paths. |
Use Scenario: Protecting LIN transceiver pins against load-dump-induced voltage spikes up to 45 V. IC Role / Device Role / Timing Role: Secondary clamp staged after primary TVS, absorbing residual energy below 3 V. Use Value: AEC-Q101 qualification ensures survival in 12 V automotive systems with 150°C junction limit and 338 °C/W thermal design margin. |
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, 1.2 kΩ ZZT, 100 µA IR @ 1 V | Lower power rating and smaller footprint; less thermal margin in high-ambient environments. | Select when board space is constrained and peak power remains below 300 mW. |
| MM3Z2V7W | 2.7 V, 200 mW, SOD-323, 1.5 kΩ ZZT, 50 µA IR @ 1 V, AEC-Q200 qualified | Lower power and higher impedance; tighter 50 µA leakage but reduced surge capability. | Prefer for cost-sensitive consumer applications where AEC-Q200 suffices and 200 mW is adequate. |
Compared with BZX584C2V7 and MM3Z2V7W, MMSZ5223B-7-F offers superior thermal robustness (370 mW @ +25°C vs. ≤200 mW), lower leakage than BZX584C2V7, and AEC-Q101 qualification-making it optimal for automotive and industrial designs requiring sustained reliability under thermal stress.
Availability
MMSZ5223B-7-F is available at Aetrix Electronics and suitable for USB interface protection, microcontroller reset generation, industrial sensor biasing, and automotive LIN bus clamping requiring stable component supply and long-term lifecycle support.
Supply support for MMSZ5223B-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The MMSZ52xxB series was developed as a high-reliability, AEC-Q101-qualified Zener family targeting automotive power management, industrial control, and consumer electronics where precision voltage reference and compact SOD123 packaging are essential.
FAQ
What is the maximum reverse voltage before breakdown for MMSZ5223B-7-F?
The MMSZ5223B-7-F has a nominal Zener voltage of 2.7 V, with guaranteed breakdown occurring between 2.57 V and 2.84 V at 20 mA test current. Below 1.0 V reverse bias, leakage remains ≤75 µA - no hard "maximum reverse voltage" is defined outside the Zener region, as it functions only in controlled reverse breakdown.
Can MMSZ5223B-7-F be used in place of a 3.3 V Zener diode?
No - MMSZ5223B-7-F is strictly a 2.7 V Zener device with ±4.4% tolerance. Substituting it for a 3.3 V part (e.g., MMSZ5227B) would result in premature conduction and incorrect voltage clamping. Always match nominal Zener voltage to circuit requirements; 2.7 V is appropriate for 3.3 V rail undershoot detection or low-threshold biasing, not 3.3 V regulation.
Is the SOD123 package lead-free and RoHS compliant?
Yes - MMSZ5223B-7-F uses matte tin finish over Alloy 42 leadframe, contains no purposely added lead, and is fully RoHS 2 (2011/65/EU) compliant. It also meets Diodes Incorporated's "Green" definition: <900 ppm bromine, <900 ppm chlorine, <1000 ppm antimony, and UL 94V-0 flammability rating.
How does temperature affect the Zener voltage of MMSZ5223B-7-F?
Per Figure 6 in DS18010, MMSZ5223B-7-F exhibits a negative temperature coefficient of approximately −0.06 %/°C near 2.7 V. This means its Zener voltage decreases by ~1.6 mV/°C over the operating range; at +125°C, VZ drops ~1.6 V from its +25°C value - a critical factor in high-temperature voltage reference designs.
MMSZ5223B-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):
- 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-F FAQ
1.How can I place an order for MMSZ5223B-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5223B-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 MMSZ5223B-7-F reliable?
The price and inventory of MMSZ5223B-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 MMSZ5223B-7-F is usually 5 days.
3.What payment methods are accepted for MMSZ5223B-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5223B-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5223B-7-F?
MMSZ5223B-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5223B-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 MMSZ5223B-7-F?
For technical support, including MMSZ5223B-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5223B-7-F requirements.
6.How does Aetrix verify that MMSZ5223B-7-F is sourced from the original manufacturer or authorized distributors?
All MMSZ5223B-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 MMSZ5223B-7-F meets industry standards.
7.What is the process for return or replacement of MMSZ5223B-7-F?
All MMSZ5223B-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5223B-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 MMSZ5223B-7-F part is unused and in its original packaging.
Return procedure for MMSZ5223B-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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