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Diodes Incorporated MMSZ5241BQ-7-F
- Part No.:
- MMSZ5241BQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ5241BQ-7-F.pdf
- Description:
- DIODE ZENER 11V 370MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,870
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Product details
Overview
MMSZ5241BQ-7-F from Diodes Incorporated is an AEC-Q101-qualified 11 V, 500 mW surface-mount Zener diode in SOD123 package, rated for 20 mA test current, 22 Ω dynamic impedance at 1 kHz, and 2.0 µA reverse leakage at 8.4 V, widely used for voltage regulation and reference in automotive power supply monitoring circuits.
For engineers reviewing the MMSZ5241BQ-7-F datasheet, MMSZ5241BQ-7-F pinout, MMSZ5241BQ-7-F application, or MMSZ5241BQ-7-F equivalent, this page delivers verified electrical parameters, automotive-grade qualification status, thermal derating behavior, and direct replacement guidance aligned with production design validation requirements.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across load variations and temperature shifts. Its 11 V nominal Zener voltage (10.45–11.55 V range), low 22 Ω impedance at 20 mA, and −0.04 %/°C temperature coefficient enable precise DC reference generation in constrained PCB layouts.
Designed for automotive environments, it meets AEC-Q101 stress testing including high-temperature operating life and temperature cycling. The SOD123 package supports automated placement and provides 338 °C/W junction-to-ambient thermal resistance on FR-4 with 1-inch copper pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11 V nominal, 10.45–11.55 V min/max at 20 mA - ensures tight regulation tolerance in feedback networks. |
| Power Dissipation | 500 mW @ TL = +75°C - defines maximum steady-state power under lead-temperature-limited conditions. |
| Zener Impedance (ZZT) | 22 Ω @ 1 kHz, 20 mA - determines AC ripple rejection capability in voltage reference paths. |
| Reverse Leakage (IR) | 2.0 µA @ VR = 8.4 V - confirms low standby current in undervoltage detection circuits. |
| Thermal Resistance (RθJA) | 338 °C/W - quantifies self-heating impact on voltage stability during continuous operation. |
| Operating Temperature | −65 °C to +150 °C - supports engine bay and under-hood deployment without derating loss. |
Pinout & Package
Package: SOD123 - surface-mount plastic case with cathode band marking, 0.01 g mass, UL 94V-0 flammability rating, and matte tin-plated Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground node | Connected to system ground or lower-potential rail in shunt regulator configuration. |
| Cathode | Reverse-biased Zener terminal / regulated output node | Connected to input voltage source through current-limiting resistor; delivers stable 11 V reference. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per high-reliability stress test standards including HTOL and TC. |
| Green compound packaging | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) compliant with RoHS 2. |
| Automated assembly compatibility | SOD123 footprint optimized for pick-and-place accuracy and reflow soldering yield in high-volume production. |
| Low thermal resistance layout | 338 °C/W RθJA on standard FR-4 with 1-inch copper pad enables >300 mW usable power at +85°C ambient. |
Applications
| Automotive Battery Monitoring | Industrial Sensor Reference |
|---|---|
|
Use Scenario: Monitoring 12 V battery voltage in engine control units to detect overvoltage or deep discharge conditions. IC Role / Device Role / Timing Role: Shunt Zener reference providing stable 11 V threshold for comparator input. Use Value: Enables accurate ±5% voltage window detection with minimal component count and no external bias circuitry. |
Use Scenario: Supplying precision reference voltage to analog front-end of pressure or temperature transducers. IC Role / Device Role / Timing Role: Low-drift DC reference source for ADC biasing and sensor excitation. Use Value: Delivers 11 V reference with −0.04 %/°C TC and 22 Ω impedance, reducing calibration drift over −40 °C to +125 °C. |
| DC-DC Feedback Divider | Overvoltage Protection Clamp |
|
Use Scenario: Setting output voltage of buck converter via resistive divider tied to feedback pin. IC Role / Device Role / Timing Role: Precision Zener replacing internal reference to adjust output without controller modification. Use Value: Allows programmable 11 V output with <±1% tolerance and stable regulation under 10–100 mA load steps. |
Use Scenario: Clamping transient surges on 12 V rail caused by load dump or inductive switching. IC Role / Device Role / Timing Role: Fast-acting shunt limiter absorbing energy above 11.55 V breakdown threshold. Use Value: Limits peak voltage to ≤11.55 V with 500 mW surge handling capacity for short-duration events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C11LT1G | 11 V, 300 mW, SOD-323, 40 Ω ZZT, −0.05 %/°C TC | Lower power rating and higher impedance limit use in high-current or low-noise references. | Select when board space is critical and 300 mW suffices; verify thermal margin in 125 °C ambient. |
| MMSZ4702T1G | 10 V, 500 mW, SOD-123, 20 Ω ZZT, −0.03 %/°C TC | 1 V lower Zener voltage requires circuit recalibration; identical package and power handling. | Choose for tighter voltage tolerance (±5%) and improved TC if 10 V reference is acceptable in design. |
Compared with BZX584C11LT1G and MMSZ4702T1G, MMSZ5241BQ-7-F offers superior power handling (500 mW vs. 300 mW) and lower impedance (22 Ω vs. 40 Ω), making it preferable for automotive voltage supervision where thermal robustness and noise immunity are critical.
Availability
MMSZ5241BQ-7-F is available at Aetrix Electronics and suitable for automotive battery monitoring, industrial sensor reference, and DC-DC feedback divider applications requiring stable component supply with AEC-Q101 compliance and full RoHS/Green certification.
Supply support for MMSZ5241BQ-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 consumer markets.
MMSZ5241BQ-7-F belongs to the MMSZ52xxB automotive Zener series, engineered specifically for voltage regulation and reference in harsh-environment electronics where AEC-Q101 qualification and thermal stability are mandatory.
FAQ
What is the maximum continuous Zener current for MMSZ5241BQ-7-F at +85°C ambient?
At +85°C ambient, derating from the 500 mW rating yields ~370 mW usable power. With 11 V Zener voltage, this supports up to 33.6 mA continuous current before exceeding thermal limits on standard FR-4 with 1-inch copper pad.
Does MMSZ5241BQ-7-F require a series current-limiting resistor in shunt regulator applications?
Yes - a series resistor is mandatory to limit current to ≤20 mA for stable regulation and prevent thermal runaway. For 12 V input, a 51 Ω ±1% resistor sets nominal current at 19.6 mA, staying within specified Zener test conditions.
How does the −0.04 %/°C temperature coefficient affect voltage accuracy over −40 °C to +125 °C?
Across that range (165 °C delta), the coefficient causes ±0.066 V shift (0.04 × 165 × 11 / 100), resulting in total Zener voltage variation from 10.38 V to 11.62 V - well within the 10.45–11.55 V datasheet min/max at 25 °C.
Is MMSZ5241BQ-7-F compatible with lead-free reflow profiles per J-STD-020?
Yes - it is qualified to Moisture Sensitivity Level 1 and rated for peak reflow temperatures up to 260 °C. The matte tin finish on Alloy 42 leads ensures reliable solder wetting and intermetallic formation under standard Pb-free thermal profiles.
MMSZ5241BQ-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 370 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 (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
MMSZ5241BQ-7-F FAQ
1.How can I place an order for MMSZ5241BQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5241BQ-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 MMSZ5241BQ-7-F reliable?
The price and inventory of MMSZ5241BQ-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 MMSZ5241BQ-7-F is usually 5 days.
3.What payment methods are accepted for MMSZ5241BQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5241BQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5241BQ-7-F?
MMSZ5241BQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5241BQ-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 MMSZ5241BQ-7-F?
For technical support, including MMSZ5241BQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5241BQ-7-F requirements.
6.How does Aetrix verify that MMSZ5241BQ-7-F is sourced from the original manufacturer or authorized distributors?
All MMSZ5241BQ-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 MMSZ5241BQ-7-F meets industry standards.
7.What is the process for return or replacement of MMSZ5241BQ-7-F?
All MMSZ5241BQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5241BQ-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 MMSZ5241BQ-7-F part is unused and in its original packaging.
Return procedure for MMSZ5241BQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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