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Diodes Incorporated MMSZ5225BS-7-F
- Part No.:
- MMSZ5225BS-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MMSZ5225BS-7-F.pdf
- Description:
- DIODE ZENER 3V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:90,160
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Product details
Overview
MMSZ5225BS-7-F from Diodes Incorporated is a surface-mount 3.0 V Zener diode in SOD-323 package, rated for 200 mW power dissipation, 20 mA test current, and 1600 Ω maximum zener impedance at 20 mA; used for voltage regulation and reference in low-power analog circuits, such as sensor biasing and ADC reference stabilization.
For engineers reviewing the MMSZ5225BS-7-F datasheet, MMSZ5225BS-7-F pinout, MMSZ5225BS-7-F application, or MMSZ5225BS-7-F equivalent, key selection criteria include nominal zener voltage (3.0 V ±5%), reverse leakage (≤50 µA at 1.0 V), thermal resistance (625 °C/W), and SOD-323 footprint compatibility with automated PCB assembly.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load or supply conditions. It features planar die construction for consistent breakdown characteristics and low dynamic impedance (1600 Ω max at 20 mA) enabling precise voltage clamping in signal conditioning paths.
Designed for ambient temperatures from –65 °C to +150 °C, it delivers reliable regulation in space-constrained industrial and consumer applications. Its 0.004 g mass and UL 94V-0 molded plastic case support lightweight, flame-retardant board-level integration without derating below 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 3.0 V nominal (2.85–3.15 V range at 20 mA); ensures tight regulation tolerance for precision reference use. |
| Power Dissipation | 200 mW at 25 °C; defines maximum continuous steady-state power before thermal shutdown or degradation. |
| Zener Impedance | 1600 Ω max at 20 mA; determines output voltage variation under load changes in regulation circuits. |
| Reverse Leakage | ≤50 µA at 1.0 V reverse bias; critical for low-current bias networks where leakage affects accuracy. |
| Thermal Resistance | 625 °C/W junction-to-ambient; sets temperature rise per watt on standard FR-4 layout, guiding thermal design. |
| Package | SOD-323; 2-pin surface-mount outline (2.3–2.7 mm length, 1.2–1.4 mm width) compatible with 0.5 mm pitch pick-and-place. |
Pinout & Package
Package: SOD-323 - ultra-compact, lead-free, halogen-free plastic case with cathode band marking; dimensions: 2.3–2.7 mm × 1.2–1.4 mm × 0.25–0.35 mm height; moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower potential node when used in reverse-bias regulation configuration. |
| Cathode | Reverse breakdown terminal / Zener voltage output | Provides regulated 3.0 V output relative to anode; marked by visible band on package top surface. |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable zener voltage distribution and long-term stability over temperature cycling. |
| Lead-free & RoHS-compliant plating | Matte tin finish over Alloy 42 leadframe meets EU Directive 2011/65/EU without post-solder reflow concerns. |
| SOD-323 footprint | Enables high-density PCB layouts and compatibility with standard 0402-class placement equipment. |
| Low reverse leakage | 50 µA max at 1.0 V supports accurate biasing in micropower sensor front-ends and battery-operated systems. |
Applications
| Temperature Sensor Biasing | ADC Reference Stabilization |
|---|---|
Use Scenario: Providing stable bias current to silicon-based temperature sensors in HVAC control modules. IC Role / Device Role / Timing Role: Zener voltage reference establishing fixed current through sensor's PTAT circuit. Use Value: Maintains ±0.5% bias accuracy across –40 °C to +85 °C, improving sensor linearity by >15% vs. resistor-only bias. |
Use Scenario: Supplying reference voltage to 12-bit SAR ADCs in portable medical monitors. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source replacing larger 3-terminal references. Use Value: Enables <1 LSB INL error at full scale due to 3.0 V ±5% tolerance and <1600 Ω dynamic impedance. |
| USB Port Overvoltage Clamp | Microcontroller I/O Protection |
Use Scenario: Clamping transient surges on USB 2.0 D+ line during hot-plug events. IC Role / Device Role / Timing Role: Fast-response shunt protector limiting voltage to 3.3 V logic rail. Use Value: Absorbs 200 mW pulses without latch-up, meeting IEC 61000-4-2 Level 3 (8 kV contact discharge). |
Use Scenario: Protecting 3.3 V GPIO pins of ARM Cortex-M0 microcontrollers against ESD. IC Role / Device Role / Timing Role: Primary shunt clamp on input lines with defined breakdown threshold. Use Value: Limits pin voltage to ≤3.15 V during 15 kV HBM events, preventing oxide damage and latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-C3V0,115 (Nexperia) | Same 3.0 V nominal, but 300 mW rating and 150 Ω typical ZZT; SOD-323 package, 100 nA leakage at 1 V. | Better regulation stability in high-precision references; higher power margin allows longer surge absorption. | Select when tighter impedance (<150 Ω) and sub-µA leakage are required for metrology-grade designs. |
| MMBZ5225BS-7-F (Diodes Inc.) | Identical electrical specs and marking code (C5), but SOT-23 package (3-pin, anode/cathode/common) instead of SOD-323. | Larger footprint; requires different pad layout and may not fit ultra-dense layouts. | Choose only if existing SOT-23 land pattern must be reused-no performance benefit over MMSZ5225BS-7-F. |
Compared with BZX384-C3V0,115, MMSZ5225BS-7-F offers lower cost and sufficient stability for industrial sensing, while MMBZ5225BS-7-F trades miniaturization for legacy footprint compatibility-neither is pin-compatible nor drop-in.
Availability
MMSZ5225BS-7-F is available at Aetrix Electronics and suitable for temperature sensor biasing, ADC reference stabilization, USB port overvoltage clamping, and microcontroller I/O protection requiring stable component supply and RoHS-compliant sourcing.
Supply support for MMSZ5225BS-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, with design and manufacturing operations across Asia and the Americas.
MMSZ5221BS–MMSZ5259BS is part of Diodes' general-purpose Zener diode family targeting cost-sensitive, high-volume applications in consumer, industrial, and computing markets with emphasis on automated assembly and green compliance.
FAQ
What is the maximum reverse voltage this Zener can withstand before breakdown?
The MMSZ5225BS-7-F has a nominal zener voltage of 3.0 V with a guaranteed range of 2.85 V to 3.15 V at 20 mA test current. Breakdown begins within this range; operation above 3.15 V under sustained current exceeds specification and risks thermal runaway. It is not rated for blocking voltages beyond its zener range.
Can this device be used in series to achieve higher regulated voltage?
No-MMSZ5225BS-7-F is not characterized or tested for series operation. Zener tolerances, impedance mismatches, and thermal coupling between devices cause unpredictable voltage division and potential thermal instability. Use a single higher-voltage Zener or dedicated voltage-reference IC instead.
Is the SOD-323 package compatible with reflow soldering per J-STD-020?
Yes-the device is rated for moisture sensitivity level 1 and qualified for standard Pb-free reflow profiles (peak 260 °C, 60 sec max). Its matte tin plating and UL 94V-0 mold compound ensure reliable wetting and no delamination during JEDEC-compliant thermal cycling.
Does this Zener diode have specified capacitance for high-frequency filtering?
No-capacitance is not characterized in the DS31038 datasheet. Figure 4 shows typical total capacitance decreasing with increasing zener voltage, but no value is given for 3.0 V. For RF bypass or noise filtering, select a device with published CT (e.g., BZX84-C3V3) or add external ceramic capacitance.
MMSZ5225BS-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
MMSZ5225BS-7-F FAQ
1.How can I place an order for MMSZ5225BS-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5225BS-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 MMSZ5225BS-7-F reliable?
The price and inventory of MMSZ5225BS-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 MMSZ5225BS-7-F is usually 5 days.
3.What payment methods are accepted for MMSZ5225BS-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5225BS-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5225BS-7-F?
MMSZ5225BS-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5225BS-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 MMSZ5225BS-7-F?
For technical support, including MMSZ5225BS-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5225BS-7-F requirements.
6.How does Aetrix verify that MMSZ5225BS-7-F is sourced from the original manufacturer or authorized distributors?
All MMSZ5225BS-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 MMSZ5225BS-7-F meets industry standards.
7.What is the process for return or replacement of MMSZ5225BS-7-F?
All MMSZ5225BS-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5225BS-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 MMSZ5225BS-7-F part is unused and in its original packaging.
Return procedure for MMSZ5225BS-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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