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Diodes Incorporated MMBZ5223B-7
- Part No.:
- MMBZ5223B-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ5223B-7.pdf
- Description:
- DIODE ZENER 2.7V 350MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,050
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Product details
Overview
MMBZ5223B-7 from Diodes Incorporated is a 2.7V, 350mW surface-mount Zener diode in SOT23 package, designed for precision voltage regulation and low-power reference applications at 20mA test current with 2.57–2.84V tolerance and 1.3kΩ dynamic impedance. It operates across –65°C to +150°C and is used in power supply feedback loops, overvoltage clamping, and analog sensor biasing circuits.
For engineers reviewing the MMBZ5223B-7 datasheet, MMBZ5223B-7 pinout, MMBZ5223B-7 application, or MMBZ5223B-7 equivalent, this page delivers verified Zener voltage range, thermal resistance (357°C/W), reverse leakage (75µA @ 1.0V), junction-to-ambient rating, and JEDEC-compliant reliability data - all critical for low-voltage rail stabilization and ESD-robust signal conditioning designs.
Technical Context
This Zener diode employs planar die construction for stable breakdown characteristics and low temperature coefficient. Its 20mA zener test current and 1.3kΩ impedance at 1kHz ensure predictable regulation under light-load conditions typical in reference and protection circuits.
Rated for 350mW dissipation on FR-4 PCB with RθJA = 357°C/W, it supports operation up to +150°C ambient and maintains <75µA reverse leakage at VR = 1.0V - enabling reliable use in battery-powered and thermally constrained industrial modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nom) | 2.7V - precise reference point for 2.5–3.0V rail regulation |
| Zener Voltage Range | 2.57–2.84V @ IZT = 20mA - ensures production yield compliance with ±5% tolerance |
| Zener Impedance | 1.3kΩ @ 1kHz - defines voltage deviation under small-signal AC load variation |
| Power Dissipation | 350mW on FR-4 - sets maximum continuous DC current limit (~130mA at 2.7V) |
| Reverse Leakage | 75µA @ VR = 1.0V - confirms low standby power loss in high-impedance bias networks |
| Thermal Resistance | 357°C/W - determines junction temperature rise under PCB-mounted thermal conditions |
| Operating Temp | –65°C to +150°C - supports automotive under-hood and industrial control environments |
Pinout & Package
Package: SOT23 - ultra-compact, surface-mount plastic package with matte tin-plated Alloy 42 leadframe, moisture sensitivity level 1, and UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Cathode-side reference node | Connected to regulated output or ground return path in shunt configuration |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to input rail or voltage source; conducts when VIN exceeds VZ |
| NC / Dummy (Pin 3) | Non-connected internal tie | Electrically isolated; no circuit function - mechanical support only |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Enables tight VZ distribution and repeatable breakdown behavior across temperature |
| 350mW FR-4 power rating | Supports direct integration into standard PCB layouts without heatsinking |
| Lead-free & RoHS 3 compliant | Meets EU Directive 2015/863/EU with <900ppm Br+Cl and <1000ppm Sb |
| AEC-Q200 readiness | Manufactured in IATF 16949-certified facilities; Q-suffix variants available for automotive PPAP |
| JEDEC High Reliability qualification | Validated per AEC-Q stress standards for long-term stability in mission-critical systems |
Applications
| Power Supply Feedback | Sensor Bias Reference |
|---|---|
|
Use Scenario: Stabilizing output voltage in low-current linear regulators and switching converter feedback dividers. IC Role / Device Role / Timing Role: Shunt voltage reference providing accurate 2.7V setpoint to error amplifier inputs. Use Value: Maintains ±2% output regulation over line/load variations due to low dynamic impedance and tight VZ tolerance. |
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) and bridge sensors. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source replacing higher-cost bandgap references in analog front-ends. Use Value: Delivers <75µA leakage and <1.3kΩ impedance to minimize sensor measurement error and self-heating effects. |
| Overvoltage Clamp | ESD Protection Interface |
|
Use Scenario: Limiting transient voltages on microcontroller I/O lines during hot-swap or inductive kick events. IC Role / Device Role / Timing Role: Fast-acting shunt clamp absorbing surge energy before downstream logic reaches damage threshold. Use Value: Activates at 2.7V nominal with sub-100ns response, protecting 3.3V GPIO against >4V transients without crowbar action. |
Use Scenario: Front-end protection for USB, I²C, and UART signal lines exposed to human-body-model (HBM) ESD. IC Role / Device Role / Timing Role: Low-capacitance (<2pF) Zener clamp diverting ESD current away from sensitive transceivers. Use Value: With 350mW rating and 1.0V reverse standoff, it suppresses 8kV HBM pulses while preserving signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C2V7 | Same 2.7V nominal, but 300mW rating and higher ZZT (1.5kΩ); SOT23 package with different marking and traceability | Limited to lower-power clamping; less suitable for precision biasing where thermal drift matters | Prefer for cost-sensitive consumer designs where 50mW margin reduction is acceptable |
| MMBZ5223BS-7-F | Same electrical specs, but "S" suffix denotes enhanced surge rating (IEC 61000-4-5 Level 3) and tighter IR screening (<50µA) | Required for industrial equipment subject to conducted transients or extended lifetime requirements | Choose when system-level EMC testing or >10-year field reliability is mandated |
Compared with BZX84-C2V7 and MMBZ5223BS-7-F, the MMBZ5223B-7 offers optimal balance of regulation accuracy, thermal robustness, and supply-chain maturity - making it ideal for general-purpose voltage referencing where JEDEC reliability and RoHS 3 compliance are baseline requirements.
Availability
MMBZ5223B-7 is available at Aetrix Electronics and suitable for power supply feedback, sensor bias reference, overvoltage clamp, and ESD protection interface applications requiring stable component supply, consistent parametric performance, and full RoHS 3 compliance.
Supply support for MMBZ5223B-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, manufacturing, and sales operations across Asia, Europe, and North America.
The MMBZ52xxB series belongs to Diodes' precision Zener diode product line, engineered specifically for compact, high-reliability voltage reference and protection functions in space-constrained industrial, computing, and communications equipment.
FAQ
What is the maximum continuous Zener current for MMBZ5223B-7 at 25°C ambient?
The device supports up to ~130mA continuous DC current at 25°C ambient, calculated from its 350mW power rating and 2.7V nominal Zener voltage (IZMAX = PD/VZ). Derating begins above 25°C per the published curve - at 70°C ambient, max current drops to ~90mA to maintain safe junction temperature.
Does MMBZ5223B-7 meet AEC-Q200 for automotive use?
MMBZ5223B-7 itself is not AEC-Q200 qualified, but Diodes offers the automotive-grade MMBZ5223BQ-7-F variant - manufactured in IATF 16949-certified facilities, PPAP-capable, and tested to AEC-Q200 stress requirements. The base part shares identical electrical specs and SOT23 packaging.
How does the 1.3kΩ Zener impedance affect regulation accuracy under load variation?
At 1kHz, 1.3kΩ impedance means a 1mA change in Zener current causes ~1.3mV output shift - critical for maintaining <0.5% regulation in precision analog circuits. This value is measured at 20mA test current and remains stable across –40°C to +85°C per characterization data.
Can MMBZ5223B-7 be used in place of a 2.5V Zener like MMBZ5221B?
No - MMBZ5223B-7 has a nominal 2.7V Zener voltage (2.57–2.84V range), while MMBZ5221B is 2.4V (2.28–2.52V). Substituting them risks undershoot or overshoot in feedback loops or bias networks. Always verify target voltage tolerance and thermal coefficient match before cross-replacement.
MMBZ5223B-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 350 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:
- SOT-23-3
MMBZ5223B-7 FAQ
1.How can I place an order for MMBZ5223B-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5223B-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 MMBZ5223B-7 reliable?
The price and inventory of MMBZ5223B-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ5223B-7 is usually 5 days.
3.What payment methods are accepted for MMBZ5223B-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5223B-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5223B-7?
MMBZ5223B-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5223B-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 MMBZ5223B-7?
For technical support, including MMBZ5223B-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5223B-7 requirements.
6.How does Aetrix verify that MMBZ5223B-7 is sourced from the original manufacturer or authorized distributors?
All MMBZ5223B-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 MMBZ5223B-7 meets industry standards.
7.What is the process for return or replacement of MMBZ5223B-7?
All MMBZ5223B-7 units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5223B-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 MMBZ5223B-7 part is unused and in its original packaging.
Return procedure for MMBZ5223B-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ5223B-7 Tags
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Diodes Incorporated
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