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Diodes Incorporated MMBZ5223B-7-F
- Part No.:
- MMBZ5223B-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ5223B-7-F.pdf
- Description:
- DIODE ZENER 2.7V 350MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,965
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Product details
Overview
MMBZ5223B-7-F from Diodes Incorporated is a 2.7 V, 350 mW surface-mount Zener diode in SOT23 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 low-power analog circuits.
For engineers reviewing the MMBZ5223B-7-F datasheet, MMBZ5223B-7-F pinout, MMBZ5223B-7-F application, or MMBZ5223B-7-F equivalent, key selection criteria include zener voltage tolerance (±5%), thermal resistance (357 °C/W on FR-4), JEDEC-compliant reliability, and RoHS/Green compliance for consumer and industrial PCB designs.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its planar die construction ensures consistent breakdown characteristics and low leakage, with specified performance validated at 25°C ambient and derated linearly above 25°C per Fig. 1.
The device exhibits a nominal zener voltage of 2.7 V with ±5% tolerance (2.57–2.84 V), measured at 20 mA test current; its 1.3 kΩ impedance at 1 kHz reflects moderate regulation capability suitable for signal-level biasing rather than high-current regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.7 V nominal, 2.57–2.84 V range at IZT = 20 mA - defines stable reference point for low-voltage bias networks |
| Power Dissipation (PD) | 350 mW on FR-4 PCB - sets maximum continuous power handling without heatsinking |
| Zener Impedance (ZZT) | 1.3 kΩ at f = 1 kHz, IZT = 20 mA - indicates voltage regulation sensitivity to current changes |
| Reverse Leakage (IR) | 75 µA at VR = 1.0 V - quantifies off-state conduction affecting high-impedance node integrity |
| Thermal Resistance (RθJA) | 357 °C/W - determines junction temperature rise per watt dissipated on standard FR-4 layout |
| Operating Temperature | −65 °C to +150 °C - supports extended-range operation in automotive and industrial environments |
Pinout & Package
Package: SOT23 - surface-mount plastic package with 3 terminals, 0.008 g mass, UL 94V-0 rated molding compound, and matte tin-plated Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal / cathode reference ground path | Connected to circuit ground or lower-potential node when used as shunt regulator |
| Cathode (Pin 2) | Zener breakdown terminal / voltage reference output | Connected to input supply via series resistor; provides regulated 2.7 V to load |
| No-Connect (Pin 3) | Unused internal connection | Electrically isolated; no PCB trace or routing required |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Enables tight VZ tolerance and repeatable breakdown characteristics across production lots |
| 350 mW power rating on FR-4 | Supports direct integration into standard PCB layouts without thermal vias or copper pours |
| JEDEC-compliant high-reliability qualification | Validated for long-term stability in commercial and automotive-adjacent applications |
| Halogen- and antimony-free "Green" compound | Meets <900 ppm Br/Cl (<1500 ppm total) and <1000 ppm Sb - compliant with global environmental directives |
Applications
| Low-Voltage Sensor Biasing | USB Port Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 2.7 V reference to analog sensor front-ends in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise bias point for op-amp input stages and ADC reference dividers. Use Value: Maintains sensor linearity and offset stability across −40 °C to +85 °C with <±5% VZ drift. |
Use Scenario: Clamping transient surges on USB 2.0 D+ and D− lines during hot-plug events. IC Role / Device Role / Timing Role: Low-capacitance overvoltage protector diverting ESD pulses before they reach USB transceiver inputs. Use Value: Limits clamped voltage to ≤2.84 V, preserving signal integrity while meeting IEC 61000-4-2 Level 4 immunity. |
| Microcontroller Reset Circuit | LED Current Regulation Reference |
|
Use Scenario: Generating clean reset threshold for 3.3 V microcontrollers in industrial control modules. IC Role / Device Role / Timing Role: Zener-based voltage monitor triggering external reset IC when supply drops below 2.57 V. Use Value: Delivers deterministic reset assertion with 75 µA leakage ensuring minimal quiescent current draw. |
Use Scenario: Setting reference voltage for constant-current LED driver feedback loops in signage systems. IC Role / Device Role / Timing Role: Precision voltage source for op-amp error amplifier in adjustable current-sense configuration. Use Value: Enables ±5% LED brightness consistency across batches using 2.7 V reference with 1.3 kΩ impedance. |
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 2.7 V nominal, but 300 mW rating and higher ZZT (1.5 kΩ); SOT23 package with different marking and thermal resistance (400 °C/W) | Suitable for lower-power biasing only; less stable under thermal stress due to higher RθJA | Select when cost sensitivity outweighs thermal margin requirements in non-automotive designs |
| MMBZ5223BS-7-F | Same electrical specs but SOT323 package (smaller footprint, 250 mW rating, RθJA = 430 °C/W) | Used where board space is constrained but power dissipation must be reduced by 29% | Choose for ultra-compact portable devices where 350 mW headroom is unnecessary |
Compared with BZX84-C2V7 and MMBZ5223BS-7-F, MMBZ5223B-7-F delivers superior thermal performance (357 °C/W) and higher power margin (350 mW), making it preferred for sustained operation in thermally dense industrial PCBs.
Availability
MMBZ5223B-7-F is available at Aetrix Electronics and suitable for low-voltage reference design, ESD protection circuits, and microcontroller reset supervision requiring stable component supply across production volumes.
Supply support for MMBZ5223B-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, specializing in high-reliability, environmentally compliant components for industrial, computing, and consumer markets.
This part belongs to the MMBZ52xxB Zener diode family, designed specifically for precision voltage referencing and transient suppression in space-constrained, high-volume surface-mount applications.
FAQ
What is the maximum continuous reverse voltage this Zener can regulate?
The MMBZ5223B-7-F is rated for nominal 2.7 V zener voltage with a guaranteed range of 2.57 V to 2.84 V at 20 mA test current. It is not intended for continuous regulation above its specified VZ; operation beyond 2.84 V risks exceeding power limits and thermal runaway unless current is strictly limited by an external series resistor.
Can this device be used in automotive applications?
MMBZ5223B-7-F is not AEC-Q200 qualified; Diodes Incorporated offers automotive-grade variants with Q-suffix (e.g., MMBZ5223BQ-7-F) manufactured in IATF 16949-certified facilities and qualified to AEC-Q200. This standard version is suitable for commercial and industrial applications only.
How does the 350 mW rating translate to real-world PCB layout?
The 350 mW rating assumes mounting on FR-4 with Diodes' recommended pad layout (2.0 mm × 0.9 mm pad, 1.35 mm × 2.9 mm stencil). Deviations-such as smaller pads, no thermal relief, or non-FR-4 substrates-reduce actual power handling and require derating per Fig. 1's linear curve above 25°C ambient.
Is the SOT23 pinout standardized across manufacturers?
Yes: Pin 1 is Anode, Pin 2 is Cathode, and Pin 3 is No-Connect for all Diodes MMBZ52xxB devices in SOT23. This matches JEDEC TO-236AB standard and is compatible with common pick-and-place tooling and footprint libraries used in Altium, KiCad, and Cadence.
MMBZ5223B-7-F 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:
- Active
- 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-F FAQ
1.How can I place an order for MMBZ5223B-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5223B-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 MMBZ5223B-7-F reliable?
The price and inventory of MMBZ5223B-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 MMBZ5223B-7-F is usually 5 days.
3.What payment methods are accepted for MMBZ5223B-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5223B-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5223B-7-F?
MMBZ5223B-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5223B-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 MMBZ5223B-7-F?
For technical support, including MMBZ5223B-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5223B-7-F requirements.
6.How does Aetrix verify that MMBZ5223B-7-F is sourced from the original manufacturer or authorized distributors?
All MMBZ5223B-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 MMBZ5223B-7-F meets industry standards.
7.What is the process for return or replacement of MMBZ5223B-7-F?
All MMBZ5223B-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5223B-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 MMBZ5223B-7-F part is unused and in its original packaging.
Return procedure for MMBZ5223B-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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