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Diodes Incorporated MMSZ5241BS-7-F
- Part No.:
- MMSZ5241BS-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MMSZ5241BS-7-F.pdf
- Description:
- DIODE ZENER 11V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,736
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Product details
Overview
MMSZ5241BS-7-F from Diodes Incorporated is a surface-mount 11 V Zener diode in SOD-323 package, rated for 200 mW power dissipation, 22 Ω zener impedance at 20 mA test current, and maximum 2.0 µA reverse leakage at 8.4 V. It provides precision voltage regulation in low-power biasing, reference, and protection circuits for portable instrumentation and power management subsystems.
For engineers reviewing the MMSZ5241BS-7-F datasheet, MMSZ5241BS-7-F pinout, MMSZ5241BS-7-F application, or MMSZ5241BS-7-F equivalent, key selection criteria include nominal zener voltage tolerance (±5%), thermal resistance (625 °C/W), reverse leakage at VR, and compatibility with automated SMT assembly on FR-4 PCBs using standard reflow profiles.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load and temperature conditions. Its planar die construction ensures consistent breakdown characteristics and low dynamic impedance (22 Ω at IZT = 20 mA) for effective regulation in low-current applications.
The device is optimized for operation at 25 °C ambient with derating above 25 °C per Fig. 1 (linear 1.6 mW/°C reduction), and exhibits typical capacitance of ~15 pF at 0 V bias (Fig. 4), making it suitable for DC and low-frequency stabilization-not RF signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nominal) | 11 V - precise DC reference voltage at 20 mA test current |
| Zener Voltage Range | 10.45 V to 11.55 V - ±5% tolerance band defining usable regulation window |
| Power Dissipation | 200 mW - maximum steady-state power at 25 °C ambient; derates linearly above |
| Zener Impedance | 22 Ω at IZT = 20 mA - low dynamic resistance enabling tight voltage regulation under load variation |
| Reverse Leakage Current | 2.0 µA at VR = 8.4 V - minimal off-state current ensuring low quiescent power in standby circuits |
| Thermal Resistance | 625 °C/W - junction-to-ambient value used to calculate max operating temperature rise on standard FR-4 layout |
| 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 plastic-molded case (UL 94V-0), cathode marked by band, weight ≈ 0.004 g, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in reverse-bias configuration; forms regulated output reference point |
| Cathode | Reverse breakdown terminal / Zener voltage sensing node | Connected to higher-potential side; voltage at this terminal clamps to 11 V when reverse current ≥ 20 mA |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable breakdown voltage and low parameter drift over time and temperature |
| Totally lead-free & RoHS compliant | Meets EU Directive 2011/65/EU; matte tin plating over Alloy 42 leadframe eliminates Pb-based solder compatibility issues |
| Halogen- and antimony-free "Green" design | Contains <900 ppm Br, <900 ppm Cl, <1000 ppm Sb-reduces environmental impact and supports eco-compliance programs |
| Optimized for automated assembly | SOD-323 footprint and terminal geometry support high-yield placement and reflow on standard SMT lines |
Applications
| Portable Battery Monitoring | Low-Power Sensor Biasing |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage in wearables using microcontroller ADC with internal reference. IC Role / Device Role / Timing Role: Provides stable 11 V reference scaled down via resistor divider to match ADC input range. Use Value: Enables ±1% voltage measurement accuracy over -20 °C to +70 °C without external op-amp buffering. |
Use Scenario: Supplying bias current to MEMS pressure sensor requiring fixed 10–12 V excitation. IC Role / Device Role / Timing Role: Acts as shunt regulator to maintain constant voltage across sensor bridge despite supply ripple. Use Value: Reduces sensor output drift to <0.05% FS/°C by stabilizing excitation voltage within ±0.5 V. |
| USB-C Power Negotiation Reference | Industrial PLC Input Protection |
Use Scenario: Generating precise 11 V threshold for USB PD sink detection logic in portable chargers. IC Role / Device Role / Timing Role: Sets comparator trip point for CC line voltage interpretation during PD contract negotiation. Use Value: Ensures reliable PD handshake across 3.3 V and 5 V host supplies by maintaining ±50 mV trip tolerance. |
Use Scenario: Clamping transient overvoltage on 24 V digital input channel of DIN-rail PLC module. IC Role / Device Role / Timing Role: Shunt limiter that conducts above 11 V to protect downstream optocoupler input stage. Use Value: Limits peak input voltage to ≤12 V during 1 kV EFT bursts, preserving optocoupler CTR over 10-year service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C11LT1G | 11 V, ±5%, 300 mW, SOD-523, 15 Ω ZZT | Higher power rating but smaller package; tighter thermal limits on dense layouts | Select when board space is constrained and thermal margin > 50 °C required |
| MMBZ5241BLT1G | 11 V, ±5%, 350 mW, SOT-23, 22 Ω ZZT | Larger footprint, higher power handling, same impedance; requires different stencil aperture | Select when higher surge current capability (e.g., IEC 61000-4-5) is needed and SOT-23 is already in BOM |
Compared with BZX584C11LT1G and MMBZ5241BLT1G, MMSZ5241BS-7-F offers optimal balance of SOD-323 compactness, 200 mW rating, and proven manufacturability in high-volume consumer electronics-making it preferred where cost-per-unit and placement yield are prioritized over marginal power or impedance improvements.
Availability
MMSZ5241BS-7-F is available at Aetrix Electronics and suitable for portable battery monitoring, low-power sensor biasing, USB-C power negotiation reference, and industrial PLC input protection requiring stable component supply and full traceability.
Supply support for MMSZ5241BS-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, serving automotive, industrial, computing, and consumer markets with high-reliability components.
MMSZ52xxBS series belongs to Diodes' general-purpose Zener diode product line, designed specifically for cost-sensitive, space-constrained applications requiring stable voltage references and robust SMT manufacturability.
FAQ
What is the maximum continuous reverse current the MMSZ5241BS-7-F can handle without degradation?
The device is rated for 20 mA test current (IZT) and supports continuous reverse current up to 20 mA at 25 °C ambient. At higher currents, power dissipation exceeds 200 mW unless board-level thermal management reduces junction temperature-derating follows 1.6 mW/°C above 25 °C per Fig. 1 in the datasheet.
Can MMSZ5241BS-7-F be used in place of a 12 V Zener like MMSZ5242BS?
No-it is not a drop-in replacement due to 11 V nominal voltage versus 12 V. Substituting would shift regulation point by 1 V, potentially causing undervoltage lockout or incorrect comparator thresholds. Use only when circuit tolerances accommodate ±1 V change or recalibration is feasible.
Does the SOD-323 package support hand-soldering repair?
Yes-the SOD-323 package is compatible with fine-tip soldering irons and hot-air rework stations. Recommended technique: preheat PCB to 100 °C, apply flux, use 350 °C tip for <3 seconds per joint, and verify cathode band alignment visually post-reflow.
Is MMSZ5241BS-7-F suitable for automotive applications per AEC-Q200?
No-it is not AEC-Q200 qualified. While it operates from −65 °C to +150 °C, Diodes Incorporated does not certify this part for automotive use. For AEC-Q200-compliant 11 V Zeners, consider the BZT52-B11 or AZ23C11 series instead.
MMSZ5241BS-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):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 22 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 8.4 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
MMSZ5241BS-7-F FAQ
1.How can I place an order for MMSZ5241BS-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5241BS-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 MMSZ5241BS-7-F reliable?
The price and inventory of MMSZ5241BS-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 MMSZ5241BS-7-F is usually 5 days.
3.What payment methods are accepted for MMSZ5241BS-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5241BS-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5241BS-7-F?
MMSZ5241BS-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5241BS-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 MMSZ5241BS-7-F?
For technical support, including MMSZ5241BS-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5241BS-7-F requirements.
6.How does Aetrix verify that MMSZ5241BS-7-F is sourced from the original manufacturer or authorized distributors?
All MMSZ5241BS-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 MMSZ5241BS-7-F meets industry standards.
7.What is the process for return or replacement of MMSZ5241BS-7-F?
All MMSZ5241BS-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5241BS-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 MMSZ5241BS-7-F part is unused and in its original packaging.
Return procedure for MMSZ5241BS-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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