My Inquiry
My Account
Diodes Incorporated MMBZ5223BW-7
- Part No.:
- MMBZ5223BW-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
MMBZ5223BW-7.pdf
- Description:
- DIODE ZENER 2.7V 200MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:4,561
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMBZ5223BW-7 from Diodes Incorporated is a 2.7 V, 200 mW surface-mount Zener diode in SOT323 package, rated for ±5% zener voltage tolerance at 20 mA test current, with 1300 Ω maximum zener impedance at 1 kHz and 75 μA maximum 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 MMBZ5223BW-7 datasheet, MMBZ5223BW-7 pinout, MMBZ5223BW-7 application, or MMBZ5223BW-7 equivalent, key selection criteria include its 2.7 V nominal breakdown voltage, 200 mW power rating under FR4 board conditions, SOT323 thermal resistance of 625 °C/W, AEC-Q101 qualification for automotive-grade reliability, and green/halogen-free construction.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage regulation across varying load currents, with specified performance at 20 mA test current and characterized up to 150 °C junction temperature. Its 1300 Ω dynamic impedance at 1 kHz reflects moderate regulation fidelity suitable for non-critical biasing and protection functions.
The device uses an alloy-42 leadframe with matte tin plating, conforms to J-STD-020D Level 1 moisture sensitivity, and is qualified per AEC-Q101 for high-reliability automotive applications - confirming suitability for under-hood and infotainment subsystems where thermal cycling and long-term stability are required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nominal) | 2.7 V - Stable reference voltage at 20 mA test current, ±5% tolerance band (2.57–2.84 V). |
| Power Dissipation | 200 mW - Maximum continuous power on FR4 PCB with recommended pad layout; derates linearly above 25°C ambient. |
| Zener Impedance | 1300 Ω @ 1 kHz - Dynamic resistance affecting regulation accuracy under small-signal AC ripple conditions. |
| Reverse Leakage Current | 75 μA @ 1.0 V - Low off-state conduction ensures minimal parasitic loading in high-impedance bias networks. |
| Thermal Resistance | 625 °C/W - Junction-to-ambient value defines temperature rise per watt dissipated on standard FR4 mounting. |
| Operating Temperature | −65 to +150 °C - Full industrial/automotive range supported without parameter drift or reliability degradation. |
Pinout & Package
Package: SOT323 - 3-terminal surface-mount plastic package with 0.65 mm pitch, 2.10 mm × 1.30 mm footprint, and 0.30 mm typical height; compatible with reflow soldering and automated pick-and-place.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal / Cathode reference ground point | Connected to lower-potential node in reverse-biased configuration; forms reference return path in shunt regulator topologies. |
| Cathode (Pin 2) | Zener breakdown terminal / Voltage regulation node | Connected to regulated rail; maintains 2.7 V relative to anode when reverse current ≥ 20 mA flows through it. |
| Collector / Heat Sink (Pin 3) | Internal die substrate connection / Thermal path | Electrically tied to cathode internally; provides primary thermal conduction path to PCB copper pour in SOT323 layout. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and body electronics requiring extended temperature and life-cycle reliability. |
| SOT323 package | Enables high-density PCB layouts with <0.006 g weight and compatibility with standard 0.65 mm pitch reflow processes. |
| Halogen- and antimony-free "Green" compound | Meets RoHS 2 (2011/65/EU) with Br+Cl <1500 ppm and Sb <1000 ppm - supports eco-compliance in export-bound designs. |
| Moisture Sensitivity Level 1 | No bake preconditioning required before assembly - reduces manufacturing overhead and eliminates moisture-induced popcorning risk. |
Applications
| Automotive Sensor Biasing | Industrial Analog Input Protection |
|---|---|
Use Scenario: Providing stable 2.7 V reference for Hall-effect and thermistor signal conditioning in engine coolant temperature sensors. 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 within ±1% error over −40 to +125°C due to tight 2.7 V tolerance and low tempco inherent to 2.7 V Zener process. | Use Scenario: Clamping transient overvoltage on 3.3 V analog front-end inputs exposed to ESD or inductive switching noise in PLC I/O modules. IC Role / Device Role / Timing Role: Reverse-biased overvoltage protector limiting input swing to ≤2.7 V above ground during fast transients. Use Value: Limits peak clamping voltage to 2.7 V + forward drop of series diode, preventing damage to downstream 3.3 V rail-tolerant amplifiers. |
| Low-Power Wearable Power Monitoring | Consumer Audio DC Offset Correction |
Use Scenario: Generating fixed 2.7 V reference for battery voltage monitoring circuitry in Bluetooth earbuds with coin-cell supply. IC Role / Device Role / Timing Role: Passive voltage reference enabling ratiometric ADC measurement without active regulator overhead. Use Value: Draws only 75 μA leakage at 1.0 V reverse bias, extending battery life beyond 12 months in always-on monitoring mode. | Use Scenario: Setting DC bias point for coupling capacitors in Class AB headphone amplifier inputs to eliminate audible pop during power-up. IC Role / Device Role / Timing Role: Precision DC level shifter defining quiescent operating point for differential input pairs. Use Value: Delivers stable 2.7 V reference with <1300 Ω impedance, minimizing offset drift caused by source impedance mismatch in high-Z audio paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C2V7 | Same 2.7 V nominal, but SOT23 package (larger footprint, higher RθJA = 350 °C/W), 350 mW rating. | Higher power handling but less space-efficient; not AEC-Q101 qualified. | Select when board layout allows larger package and higher surge tolerance is needed over automotive qualification. |
| MMBZ5223BS | Identical electrical specs, but SOD-323 package (0.95 mm × 1.35 mm vs. SOT323's 2.10 mm × 1.30 mm); same 200 mW rating. | Slightly smaller footprint and lower weight; identical thermal and reliability specs. | Prefer when ultra-compact placement is critical and SOD-323 pick-and-place capability exists. |
Compared with BZX84-C2V7 and MMBZ5223BS, MMBZ5223BW-7 uniquely combines AEC-Q101 qualification, SOT323 manufacturability, and 200 mW regulation fidelity - making it optimal for space-constrained automotive and industrial designs requiring certified reliability.
Availability
MMBZ5223BW-7 is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial analog input protection, and low-power wearable power monitoring requiring stable component supply, consistent parametric performance, and full traceability.
Supply support for MMBZ5223BW-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 MMBZ52xxBW series belongs to Diodes' automotive-qualified Zener portfolio, engineered specifically for precision voltage reference and overvoltage protection in harsh-environment electronics where reliability, thermal stability, and regulatory compliance are mandatory.
FAQ
What is the maximum reverse voltage that can be continuously applied to MMBZ5223BW-7 without breakdown?
The MMBZ5223BW-7 begins controlled reverse breakdown at approximately 2.57 V (minimum zener voltage). Applying more than 1.0 V reverse bias - the rated condition for leakage testing - is permissible only up to its nominal 2.7 V zener voltage; sustained reverse voltage exceeding 2.84 V (maximum spec) risks uncontrolled conduction or thermal runaway without current limiting.
Does MMBZ5223BW-7 require external current limiting in shunt regulator configurations?
Yes - like all Zener diodes, MMBZ5223BW-7 must be used with a series current-limiting resistor to prevent thermal destruction. For 20 mA nominal operation at 2.7 V from a 5 V rail, a 115 Ω resistor (±5%) is required; resistor power rating must exceed 46 mW to handle worst-case dissipation.
Is MMBZ5223BW-7 suitable for use in high-frequency signal path clamping?
No - its typical capacitance exceeds 100 pF at 1 V reverse bias (per Fig. 4 trend), and zener impedance rises sharply above 1 kHz. It is unsuitable for RF or >1 MHz digital signal clamping; TVS diodes or low-capacitance ESD suppressors are preferred for those roles.
Can MMBZ5223BW-7 be substituted for MMBZ5221BW-7 in a 2.4 V reference design?
No - MMBZ5221BW-7 has a nominal 2.4 V zener voltage (2.28–2.52 V range), while MMBZ5223BW-7 is 2.7 V (2.57–2.84 V). Substitution would shift reference voltage by ~12.5%, degrading ADC accuracy or comparator trip points unless circuit gain or divider ratios are recalculated.
MMBZ5223BW-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 200 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-323
MMBZ5223BW-7 FAQ
1.How can I place an order for MMBZ5223BW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5223BW-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 MMBZ5223BW-7 reliable?
The price and inventory of MMBZ5223BW-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ5223BW-7 is usually 5 days.
3.What payment methods are accepted for MMBZ5223BW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5223BW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5223BW-7?
MMBZ5223BW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5223BW-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 MMBZ5223BW-7?
For technical support, including MMBZ5223BW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5223BW-7 requirements.
6.How does Aetrix verify that MMBZ5223BW-7 is sourced from the original manufacturer or authorized distributors?
All MMBZ5223BW-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 MMBZ5223BW-7 meets industry standards.
7.What is the process for return or replacement of MMBZ5223BW-7?
All MMBZ5223BW-7 units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5223BW-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 MMBZ5223BW-7 part is unused and in its original packaging.
Return procedure for MMBZ5223BW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ5223BW-7 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
