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Diodes Incorporated MMBZ5225BW-7-F
- Part No.:
- MMBZ5225BW-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ5225BW-7-F.pdf
- Description:
- DIODE ZENER 3V 200MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:7,220
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Product details
Overview
MMBZ5225BW-7-F from Diodes Incorporated is a 3.0 V, 200 mW surface-mount Zener diode in SOT323 package, rated for ±5% zener voltage tolerance (2.85–3.15 V), with 1600 Ω max zener impedance at 20 mA test current and 50 μA max 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 MMBZ5225BW-7-F datasheet, MMBZ5225BW-7-F pinout, MMBZ5225BW-7-F application, or MMBZ5225BW-7-F equivalent, key selection criteria include zener voltage accuracy, low leakage at sub-breakdown bias, thermal resistance (625 °C/W), AEC-Q101 qualification for automotive-grade reliability, and compatibility with automated SMT assembly on FR4 PCBs.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage regulation across varying load currents. Its 200 mW power rating and 625 °C/W junction-to-ambient thermal resistance define its safe operating envelope under continuous DC or low-duty-cycle pulse conditions.
The device exhibits 1600 Ω dynamic impedance at IZT = 20 mA and <1000 Ω at IZK = 0.25 mA, enabling predictable clamping behavior in both nominal and knee-region operation. Its 50 μA reverse leakage at VR = 1.0 V ensures minimal quiescent current draw in standby-sensitive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.0 V nominal, 2.85–3.15 V range at 20 mA - enables precise 3.3 V rail monitoring or 3 V logic-level reference generation |
| Power Dissipation (PD) | 200 mW - supports continuous regulation in space-constrained, low-power sensor nodes and interface circuits |
| Zener Impedance (ZZT) | 1600 Ω max at 20 mA - defines voltage deviation under load transients; suitable for non-critical biasing, not high-precision references |
| Reverse Leakage (IR) | 50 μA max at 1.0 V - ensures negligible standby current in battery-backed circuits and low-leakage protection paths |
| Thermal Resistance (RθJA) | 625 °C/W - requires careful PCB copper area design per AP02001 layout to avoid derating above +25°C ambient |
| AEC-Q101 Qualified | Yes - validated for automotive electronics including infotainment power management and body control module voltage supervision |
Pinout & Package
Package: SOT323 - ultra-small 3-pin surface-mount plastic case (2.10 mm × 1.30 mm × 0.90 mm), lead-free matte tin-plated terminals, moisture sensitivity level 1, weight ≈ 0.006 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal / cathode reference ground path | Connected to system ground or lower-potential node when used in shunt regulation configuration |
| Cathode (Pin 2) | Zener breakdown terminal / regulated output node | Connected to input supply or signal line requiring clamping; voltage referenced to anode |
| NC / Heat Sink Pad (Pin 3) | Non-connected thermal pad | Internally unconnected; may be left floating or grounded for mechanical stability-no electrical function |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive temperature cycling, humidity, and mechanical shock-enables use in under-hood ECUs without additional qualification |
| SOT323 footprint | Enables high-density placement in portable and wearable devices where board area is constrained to <2.5 mm² per device |
| Green molding compound | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) - meets IPC-1752A material declaration requirements for RoHS 2 and REACH compliance |
| Lead-free plating | Matte tin over Alloy 42 leadframe - compatible with Pb-free reflow profiles and eliminates post-assembly lead contamination risk |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage supervision of 3.3 V microcontroller I/O rails in door module ECUs exposed to load dump and cold crank conditions. IC Role / Device Role / Timing Role: Shunt regulator and transient clamp protecting MCU GPIOs from overvoltage events up to ±25 V. Use Value: Prevents latch-up and ESD-induced resets by limiting rail excursion to ≤3.3 V while drawing <50 μA during normal operation. | Use Scenario: Biasing and reference stabilization for 4–20 mA loop-powered pressure transmitters operating in hazardous environments. IC Role / Device Role / Timing Role: Provides stable 3.0 V reference for op-amp gain-setting resistors and ADC reference dividers. Use Value: Maintains measurement accuracy within ±0.5% over -40°C to +85°C due to tight 5% VZ tolerance and low tempco (typ. 0.02%/°C). |
| USB-C Power Delivery Interface Protection | Medical Wearable Battery Monitoring |
Use Scenario: Overvoltage clamping on CC1/CC2 configuration channel lines during USB PD negotiation bursts. IC Role / Device Role / Timing Role: Fast-response Zener clamp absorbing 100 ns, 15 V spikes without parasitic capacitance degradation. Use Value: Limits CC line voltage to 3.3 V maximum, preserving USB PD controller integrity while adding <0.3 pF parasitic capacitance. | Use Scenario: Low-current voltage threshold detection in lithium coin-cell–powered ECG patch monitors. IC Role / Device Role / Timing Role: Precision 3.0 V reference for comparator-based battery end-of-life flagging. Use Value: Enables accurate 2.8 V cutoff detection with <1 μA total quiescent current, extending usable battery life by >12 months. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B3V0,115 | Same 3.0 V nominal, ±5% tolerance, but 300 mW PD and SOD323 package (slightly larger footprint) | Higher power margin allows use in higher-current clamp circuits; less suitable for ultra-dense layouts | Select when >200 mW surge handling is required and board space permits 2.7 × 1.7 mm outline |
| MM3Z3V0T1G | 3.0 V nominal, ±5%, 200 mW, but SOD-323 package and 2000 Ω max ZZT at 5 mA (vs. 1600 Ω at 20 mA) | Higher dynamic impedance reduces regulation fidelity under load variation; optimized for cost over performance | Select for cost-sensitive consumer applications where ±100 mV regulation drift is acceptable |
Compared with BZX384-B3V0,115 and MM3Z3V0T1G, MMBZ5225BW-7-F offers tighter thermal resistance (625 vs. ~700 °C/W), AEC-Q101 qualification, and superior low-current impedance behavior-making it preferred for automotive and industrial designs demanding reliability and consistent regulation at 20 mA.
Availability
MMBZ5225BW-7-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial 4–20 mA transmitters, USB-C interface protection circuits, and medical wearable battery monitors requiring stable component supply and long-term lifecycle support.
Supply support for MMBZ5225BW-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 components for automotive, industrial, and computing markets.
The MMBZ52xxBW series belongs to Diodes' AEC-Q101-qualified Zener diode portfolio, engineered specifically for voltage regulation and transient suppression in harsh-environment electronics where small size, low leakage, and process consistency are critical.
FAQ
What is the maximum reverse voltage (VR) at which leakage remains ≤50 μA?
The datasheet specifies 50 μA maximum reverse leakage current at VR = 1.0 V. At higher reverse voltages below breakdown, leakage increases exponentially; for example, at VR = 2.0 V, typical leakage rises to ~200 μA. Operation above 1.0 V in reverse bias should assume increasing leakage unless verified by characterization.
Can MMBZ5225BW-7-F be used in place of a 3.3 V Zener diode?
No-it is specified for 3.0 V nominal zener voltage (2.85–3.15 V range). Using it as a 3.3 V reference would result in systematic under-regulation (~300 mV error), potentially causing undervoltage lockout or incorrect biasing. For 3.3 V, MMBZ5226BW (3.3 V, 3.14–3.47 V) is the correct variant.
Is the SOT323 package pinout compatible with SOD-323 or SC-70 packages?
No-SOT323 has a distinct 3-pin arrangement with anode (pin 1), cathode (pin 2), and non-connected thermal pad (pin 3). SOD-323 and SC-70 use 2-pin configurations with different pin assignments and thermal characteristics. Mechanical and solder paste stencil designs must be specific to SOT323 per AP02002.
Does this part support reflow soldering with lead-free profiles?
Yes-its matte tin finish and Alloy 42 leadframe are qualified for standard Pb-free reflow profiles (peak 260°C, 10-second dwell). Moisture sensitivity level 1 means floor life is unlimited at ≤30°C/60% RH, eliminating bake requirements prior to assembly.
MMBZ5225BW-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):
- 3 V
- Tolerance:
- ±5%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 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:
- SOT-23-3
MMBZ5225BW-7-F FAQ
1.How can I place an order for MMBZ5225BW-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5225BW-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 MMBZ5225BW-7-F reliable?
The price and inventory of MMBZ5225BW-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 MMBZ5225BW-7-F is usually 5 days.
3.What payment methods are accepted for MMBZ5225BW-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5225BW-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5225BW-7-F?
MMBZ5225BW-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5225BW-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 MMBZ5225BW-7-F?
For technical support, including MMBZ5225BW-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5225BW-7-F requirements.
6.How does Aetrix verify that MMBZ5225BW-7-F is sourced from the original manufacturer or authorized distributors?
All MMBZ5225BW-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 MMBZ5225BW-7-F meets industry standards.
7.What is the process for return or replacement of MMBZ5225BW-7-F?
All MMBZ5225BW-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5225BW-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 MMBZ5225BW-7-F part is unused and in its original packaging.
Return procedure for MMBZ5225BW-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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