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Diodes Incorporated MMSZ5223BQ-7-F
- Part No.:
- MMSZ5223BQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ5223BQ-7-F.pdf
- Description:
- DIODE ZENER 2.7V 370MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,725
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Product details
Overview
MMSZ5223BQ-7-F from Diodes Incorporated is an AEC-Q101-qualified 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, used for precision voltage reference and overvoltage protection in automotive power rails.
For engineers reviewing the MMSZ5223BQ-7-F datasheet, MMSZ5223BQ-7-F pinout, MMSZ5223BQ-7-F application, or MMSZ5223BQ-7-F equivalent, this part delivers automotive-grade stability, low-profile SOD123 mounting compatibility, and verified Zener voltage tolerance (±4.4%) under production thermal conditions.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable 2.7 V reference across load variations and temperature shifts. Its 1.3 kΩ impedance at 1 kHz and ±0.08%/°C temperature coefficient ensure predictable regulation in low-power biasing and feedback networks.
Designed for automotive environments, it sustains operation from −65°C to +150°C and meets AEC-Q101 stress testing requirements including HTGB, TCT, and HAST. The SOD123 package supports automated placement and provides 338°C/W junction-to-ambient thermal resistance on FR-4 PCBs.
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 precise clamping threshold for 3.3 V rail monitoring |
| Power Dissipation | 370 mW @ TA = 25°C - limits continuous dissipation without heatsinking on standard PCB layout |
| Zener Impedance (ZZT) | 30 Ω @ IZT = 20 mA, 1 kHz - ensures minimal output voltage variation under dynamic load transients |
| Reverse Leakage (IR) | 75 µA @ VR = 1.0 V - guarantees low standby current in always-on sensing circuits |
| Thermal Resistance (RθJA) | 338 °C/W - determines junction temperature rise under 370 mW load on typical 1-inch copper pad |
| Operating Temperature | −65°C to +150°C - enables deployment in engine control units and under-hood modules |
Pinout & Package
Package: SOD123 - surface-mount plastic case with cathode band marking, 1.55 mm width, 2.65 mm length, 1.05 mm height, matte tin-plated Alloy 42 leadframe, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to system ground or lower-potential rail; establishes reference point for reverse-biased operation |
| Cathode | Zener breakdown terminal / regulated output node | Connected to protected node or feedback input; maintains 2.7 V relative to anode during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per high-reliability stress tests including temperature cycling and humidity exposure |
| Green compound molding | Halogen- and antimony-free UL 94V-0 plastic housing compliant with RoHS 2 and JEDEC J-STD-020 Level 1 |
| Automated assembly compatibility | SOD123 footprint optimized for pick-and-place accuracy and reflow soldering yield in high-volume SMT lines |
| Low leakage at low reverse bias | 75 µA max at 1.0 V enables use in battery-backed circuits where standby current must remain sub-100 µA |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage reference for analog-to-digital conversion of 12 V battery-sensed signals in BCM microcontrollers. IC Role / Device Role / Timing Role: Zener diode providing stable 2.7 V reference to ADC reference divider network. Use Value: Maintains <±1% reference accuracy across −40°C to +125°C ambient, enabling reliable battery state-of-charge estimation. |
Use Scenario: Overvoltage clamp protecting 3.3 V I/O pins of industrial temperature sensors exposed to ESD events. IC Role / Device Role / Timing Role: Transient voltage suppressor limiting input excursions to ≤2.84 V during fast-rising surges. Use Value: Clamps 8 kV contact ESD pulses within 1 ns response time while adding <0.5 pF parasitic capacitance to signal path. |
| Consumer USB-C Power Delivery Monitor | Medical Portable Diagnostic Device |
Use Scenario: Biasing resistor-divider network for CC line voltage detection in USB-C PD controllers. IC Role / Device Role / Timing Role: Precision shunt regulator setting 2.7 V threshold for PD negotiation logic. Use Value: Enables accurate detection of sink/source role negotiation states with ±4.4% VZ tolerance over full temperature range. |
Use Scenario: Low-power voltage reference for analog front-end amplifiers in handheld ECG monitors. IC Role / Device Role / Timing Role: Stable DC reference source for instrumentation amplifier offset calibration. Use Value: Delivers 2.7 V reference with <0.1% drift over 1000-hour life test, supporting clinical-grade signal fidelity. |
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 ±5%, 300 mW rating, SOD323 package, 100 Ω ZZT, higher 100 µA IR at 1 V | Smaller footprint but lower power handling; unsuitable for >250 mW sustained dissipation | Select when board space is constrained and thermal budget permits lower derating margin |
| MM3Z2V7W | 2.7 V ±5%, 200 mW rating, SOD323 package, 120 Ω ZZT, 10 µA IR at 1 V | Lower leakage but significantly reduced power capability; not qualified to AEC-Q101 | Prefer for ultra-low-power portable devices where automotive qualification is unnecessary |
Compared with BZX584C2V7 and MM3Z2V7W, MMSZ5223BQ-7-F offers superior automotive reliability, higher 370 mW ambient-rated power, and tighter 2.57–2.84 V tolerance-making it the only choice for thermally demanding, safety-critical vehicle subsystems.
Availability
MMSZ5223BQ-7-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, and medical diagnostic equipment requiring stable component supply with guaranteed AEC-Q101 compliance and traceable lot history.
Supply support for MMSZ5223BQ-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, serving automotive, industrial, computing, and consumer markets with high-reliability components.
The MMSZ52xxB series targets automotive and industrial applications requiring robust, low-cost Zener regulation in compact SOD123 packages, emphasizing AEC-Q101 qualification, green materials, and automated assembly readiness.
FAQ
What is the maximum continuous Zener current for MMSZ5223BQ-7-F at 85°C ambient?
At 85°C ambient, the device's power derating curve reduces its allowable dissipation to approximately 290 mW. With a nominal 2.7 V Zener voltage, this corresponds to a maximum continuous Zener current of ~107 mA. This value assumes standard FR-4 PCB layout with 1-inch copper pad per Diodes' datasheet test condition.
Does MMSZ5223BQ-7-F have a specified capacitance value?
No capacitance value is specified in the official DS18010 datasheet for MMSZ5223BQ-7-F. Figure 4 shows typical total capacitance for the MMSZ52xxB family decreasing with increasing Zener voltage, estimating ~30–40 pF for 2.7 V parts-but this is not a guaranteed parameter and should not be used in design-critical timing or filtering applications.
Can MMSZ5223BQ-7-F replace MMSZ5221B in a 2.4 V reference circuit?
No. MMSZ5221B has a nominal Zener voltage of 2.4 V (2.28–2.52 V range), while MMSZ5223BQ-7-F is rated at 2.7 V (2.57–2.84 V). Substituting them would shift the reference by ~12.5%, potentially causing ADC misreading or comparator latch-up in precision circuits.
Is the cathode band polarity consistent across all SOD123-packaged Diodes Incorporated Zeners?
Yes. All SOD123-packaged Zener diodes from Diodes Incorporated-including the MMSZ52xxB series-use a single black cathode band at the cathode end. The anode is the unmarked end, and polarity is confirmed in the top-view diagram on page 2 of DS18010 Rev. 28-2.
MMSZ5223BQ-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:
- 370 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 (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
MMSZ5223BQ-7-F FAQ
1.How can I place an order for MMSZ5223BQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5223BQ-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 MMSZ5223BQ-7-F reliable?
The price and inventory of MMSZ5223BQ-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 MMSZ5223BQ-7-F is usually 5 days.
3.What payment methods are accepted for MMSZ5223BQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5223BQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5223BQ-7-F?
MMSZ5223BQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5223BQ-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 MMSZ5223BQ-7-F?
For technical support, including MMSZ5223BQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5223BQ-7-F requirements.
6.How does Aetrix verify that MMSZ5223BQ-7-F is sourced from the original manufacturer or authorized distributors?
All MMSZ5223BQ-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 MMSZ5223BQ-7-F meets industry standards.
7.What is the process for return or replacement of MMSZ5223BQ-7-F?
All MMSZ5223BQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5223BQ-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 MMSZ5223BQ-7-F part is unused and in its original packaging.
Return procedure for MMSZ5223BQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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