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Diodes Incorporated MMSZ5241BS-7
- Part No.:
- MMSZ5241BS-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
MMSZ5241BS-7.pdf
- Description:
- DIODE ZENER 11V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:4,268
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Product details
Overview
MMSZ5241BS-7 from Diodes Incorporated is a surface-mount 11 V Zener diode in SOD-323 package, rated for 200 mW power dissipation, with nominal Zener voltage 11.0 V (min 10.45 V, max 11.55 V) at 20 mA test current, 22 Ω dynamic impedance at IZT, and 2.0 µA reverse leakage at 8.4 V. It serves as a precision voltage reference or overvoltage clamp in low-power analog signal conditioning circuits.
For engineers reviewing the MMSZ5241BS-7 datasheet, MMSZ5241BS-7 pinout, MMSZ5241BS-7 application, or MMSZ5241BS-7 equivalent, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (625 °C/W), SOD-323 footprint compatibility, cathode-band polarity marking, and RoHS-compliant lead-free plating for automated reflow assembly.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load or supply conditions. Its planar die construction ensures consistent breakdown characteristics and low leakage, while the SOD-323 package enables high-density PCB layouts and compatibility with standard pick-and-place equipment.
The device exhibits 22 Ω Zener impedance at 20 mA and 600 Ω at 0.25 mA, supporting both regulation and transient clamping functions. Thermal derating follows a linear curve from 200 mW at 25°C to zero at 150°C ambient, per Figure 1 in DS31038 Rev. 13–2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.0 V nominal, ±5% tolerance (10.45–11.55 V); defines stable reference point for biasing or clamping |
| Test Current (IZT) | 20 mA; operating point where VZ and ZZT are specified; sets minimum regulation current |
| Zener Impedance (ZZT) | 22 Ω at IZT; indicates voltage stability under small-signal AC variations |
| Power Dissipation (PD) | 200 mW at TA = 25°C; maximum steady-state power before thermal runaway |
| Reverse Leakage (IR) | 2.0 µA at VR = 8.4 V; confirms low off-state current for precision reference use |
| Package | SOD-323; 2-pin surface-mount outline (2.3–2.7 mm length, 1.2–1.4 mm width); supports 0.4 mm pitch placement |
| Operating Temperature | −65°C to +150°C; suitable for industrial and automotive under-hood environments |
Pinout & Package
Package: SOD-323 - ultra-small plastic surface-mount case with cathode band marking on top surface; dimensions: 2.3–2.7 mm × 1.2–1.4 mm × 0.9–1.1 mm height; moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to lower-potential node; forms reference return path in shunt regulator topology |
| Cathode | Reverse-biased Zener terminal / voltage reference output | Marked with band; connected to regulated node; sinks current to maintain fixed VZ |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures tight VZ distribution and repeatable Zener impedance across production lots |
| Lead-free & RoHS-compliant plating | Matte tin finish over Alloy 42 leadframe; compatible with Pb-free reflow profiles (J-STD-020D) |
| Halogen- and antimony-free "Green" material | <900 ppm Br, <900 ppm Cl, <1000 ppm Sb; meets environmental compliance for global markets |
| Automated assembly optimized | SOD-323 footprint and 0.004 g weight enable reliable high-speed pick-and-place and solder paste printing |
Applications
| Low-Power Voltage Reference | Overvoltage Clamp for GPIO Protection |
|---|---|
|
Use Scenario: Providing stable 11 V bias for op-amp input stages or ADC reference dividers in battery-powered sensors. IC Role / Device Role: Shunt voltage reference; maintains fixed potential despite supply ripple or load variation. Use Value: Enables 0.5% full-scale accuracy in 12-bit analog front-ends without external regulators. |
Use Scenario: Protecting 3.3 V or 5 V microcontroller GPIO pins from ESD or inductive kickback exceeding 12 V. IC Role / Device Role: Transient voltage suppressor; clamps surge energy by conducting above 11.55 V. Use Value: Limits peak voltage to ≤12 V with <2.0 µA standby leakage, preserving signal integrity during normal operation. |
| Current-Limited Bias Generator | Temperature-Stable Sensor Excitation |
|
Use Scenario: Generating precise 11 V excitation for resistive bridge sensors in industrial transmitters. IC Role / Device Role: Fixed-voltage source in series with current-limiting resistor. Use Value: Delivers ±5% voltage stability over −40°C to +85°C, reducing calibration drift in pressure sensors. |
Use Scenario: Supplying stable bias to thermistor networks in HVAC control modules. IC Role / Device Role: Low-drift shunt reference with minimal self-heating (<200 mW). Use Value: Maintains <0.1% VZ shift over temperature range due to planar die thermal uniformity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B11,115 (Nexperia) | Same 11 V nominal, but 300 mW PD, 15 Ω ZZT, SOD-323 package | Higher power margin allows higher IZ for improved noise immunity in noisy environments | Select when >200 mW headroom or lower impedance is required; verify thermal pad layout compatibility |
| MMBZ5241BS (Diodes Inc.) | Identical electrical specs, but SOT-23 package (3-pin, anode/cathode/NC); larger footprint and 350 mW rating | Offers mechanical robustness and higher power handling, but occupies ~3× PCB area | Choose for prototyping or manual assembly where SOD-323 placement is challenging; not drop-in compatible |
Compared with BZX384-B11 and MMBZ5241BS, MMSZ5241BS-7 provides optimal space efficiency and RoHS/Green compliance for high-density consumer electronics, while trading off some power headroom and impedance performance for minimal footprint.
Availability
MMSZ5241BS-7 is available at Aetrix Electronics and suitable for low-power voltage reference, GPIO protection, sensor biasing, and portable electronics requiring stable component supply with guaranteed long-term sourcing.
Supply support for MMSZ5241BS-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 and manufacturing operations across Asia and the Americas.
MMSZ52xxBS belongs to Diodes' general-purpose Zener diode product line, engineered for cost-effective, high-reliability voltage regulation and clamping in space-constrained consumer, computing, and industrial applications.
FAQ
What is the maximum continuous reverse voltage that can be safely applied to MMSZ5241BS-7?
The absolute maximum reverse voltage is defined by the Zener breakdown threshold: devices are rated to operate up to 11.55 V (VZ max) continuously at 20 mA. Applying ≥12 V risks uncontrolled current rise unless externally limited; the 8.4 V reverse leakage test voltage confirms safe operation below VZ min.
Does MMSZ5241BS-7 require a series current-limiting resistor in all applications?
Yes-this is a shunt Zener diode and must always be used with a series resistor to limit current to ≤20 mA at worst-case input voltage. For example, with 15 V supply and 11 V VZ, a minimum 200 Ω resistor is required to keep power within 200 mW. No internal current limiting exists.
How does temperature affect the Zener voltage of MMSZ5241BS-7?
VZ has a positive temperature coefficient (~+0.07%/°C near 11 V), meaning voltage increases ~7.7 mV/°C above 25°C. Over −65°C to +150°C, total VZ shift is bounded by process characterization; typical drift is <±2% across full range per Diodes' application data.
Can MMSZ5241BS-7 be used in place of a 12 V Zener like MMSZ5242BS?
No-MMSZ5241BS-7 is specified at 11.0 V (±5%), while MMSZ5242BS is 12.0 V (±5%). Substituting introduces 9% voltage error, violating regulation tolerances in precision circuits. Use only when system-level margin accommodates this offset, such as non-critical clamping.
MMSZ5241BS-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MMSZ5241BS-7 FAQ
1.How can I place an order for MMSZ5241BS-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5241BS-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 MMSZ5241BS-7 reliable?
The price and inventory of MMSZ5241BS-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ5241BS-7 is usually 5 days.
3.What payment methods are accepted for MMSZ5241BS-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5241BS-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5241BS-7?
MMSZ5241BS-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5241BS-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 MMSZ5241BS-7?
For technical support, including MMSZ5241BS-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5241BS-7 requirements.
6.How does Aetrix verify that MMSZ5241BS-7 is sourced from the original manufacturer or authorized distributors?
All MMSZ5241BS-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 MMSZ5241BS-7 meets industry standards.
7.What is the process for return or replacement of MMSZ5241BS-7?
All MMSZ5241BS-7 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5241BS-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 MMSZ5241BS-7 part is unused and in its original packaging.
Return procedure for MMSZ5241BS-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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