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Diodes Incorporated MMSZ5234BQ-7-F
- Part No.:
- MMSZ5234BQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ5234BQ-7-F.pdf
- Description:
- DIODE ZENER 6.2V 370MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,455
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Product details
Overview
MMSZ5234BQ-7-F from Diodes Incorporated is an AEC-Q101-qualified 6.2 V, 500 mW surface-mount Zener diode in SOD123 package, rated for 20 mA test current, 7 Ω dynamic impedance at 20 mA, and 5 µA reverse leakage at 4.0 V, widely used for voltage regulation and reference in automotive power supply rails.
For engineers reviewing the MMSZ5234BQ-7-F datasheet, MMSZ5234BQ-7-F pinout, MMSZ5234BQ-7-F application, or MMSZ5234BQ-7-F equivalent, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (338 °C/W), automotive qualification status, cathode-band polarity marking, and SOD123 footprint compatibility with automated PCB assembly.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across load variations, with a nominal 6.2 V regulation point defined at 20 mA test current and ±5% tolerance (5.89–6.51 V). Its 7 Ω Zener impedance at IZT ensures low output variation under moderate current shifts.
Designed for automotive environments, it meets AEC-Q101 stress testing requirements and features a matte tin–plated alloy 42 leadframe, halogen/antimony-free green molding compound (UL 94V-0), and moisture sensitivity level 1 - enabling reflow compatibility without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V nominal, 5.89–6.51 V range at 20 mA - defines precise regulation threshold for feedback loops and reference circuits. |
| Power Dissipation | 500 mW @ TL = +75°C - supports sustained operation on thermally anchored PCB pads in engine control units. |
| Zener Impedance (ZZT) | 7 Ω @ 20 mA - limits output voltage deviation to <140 mV for ±1 mA load change, critical for analog reference stability. |
| Reverse Leakage (IR) | 5 µA max @ VR = 4.0 V - ensures minimal quiescent current draw in always-on vehicle subsystems. |
| Thermal Resistance (RθJA) | 338 °C/W - requires careful copper pad design (1-inch FR-4 pad) to sustain full power without exceeding 150°C junction temperature. |
| Operating Temperature | −65°C to +150°C - validated for under-hood automotive locations including transmission control modules and body controllers. |
Pinout & Package
Package: SOD123 - surface-mount plastic case with cathode band marking, 1.55 mm width, 2.65 mm length, 1.05 mm height, and 0.57 mm lead pitch; compatible with standard 0805 land patterns and reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; forms reference return path in shunt regulator topologies. |
| Cathode | Zener breakdown terminal / regulated output node | Connected to input rail; clamps voltage to 6.2 V when reverse-biased above breakdown threshold. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for safety-critical ECUs. |
| Green molding compound | Halogen- and antimony-free (Br+Cl <1500 ppm, Sb <1000 ppm), UL 94V-0 rated - meets global environmental compliance mandates. |
| SOD123 footprint | Standardized 0805-compatible outline with 0.57 mm lead pitch - enables high-speed pick-and-place placement and AOI inspection. |
| Matte tin lead finish | Lead-free plating over alloy 42, solderable per MIL-STD-202 Method 208 - eliminates Pb contamination risk and ensures robust intermetallic formation. |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 6.2 V reference for microcontroller ADC inputs and CAN transceiver biasing in BCMs. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable excitation for analog front-end circuitry. Use Value: Maintains 6.2 V ±3% across −40°C to +125°C ambient, ensuring consistent sensor measurement accuracy despite battery voltage fluctuations. |
Use Scenario: Providing precision bias voltage for op-amp-based bridge sensor amplifiers in pressure transducers. IC Role / Device Role / Timing Role: Low-noise Zener reference source replacing higher-cost IC references where 1% tolerance suffices. Use Value: Delivers 7 Ω dynamic impedance and 5 µA leakage, minimizing offset drift and power loss in 4–20 mA loop-powered designs. |
| Consumer Power Adapter Feedback | Medical Diagnostic Equipment Power Rails |
Use Scenario: Secondary-side voltage sensing in flyback converters for USB-C PD adapters. IC Role / Device Role / Timing Role: Zener clamp in optocoupler feedback network to regulate isolated output voltage. Use Value: Enables tight 5% regulation window with fast transient response due to low ZZT, supporting multi-voltage USB-PD negotiation. |
Use Scenario: Overvoltage protection and reference stabilization for FPGA I/O banks in portable ultrasound imaging systems. IC Role / Device Role / Timing Role: Dual-role device acting as both precision reference and fault clamp during surge events. Use Value: Withstands 150°C junction temperature and exhibits <0.1%/°C TC near 6.2 V, preserving timing integrity in real-time signal processing paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C6V2-7-F | Same 6.2 V rating, but SOT-23 package (higher RθJA = 375 °C/W), 100 mW lower PD (400 mW), no AEC-Q101 qualification. | Not qualified for automotive under-hood use; limited to commercial-grade consumer or industrial PCBs with ample airflow. | Select when cost and board space are prioritized over automotive reliability and thermal headroom. |
| MMSZ5234B-7-F | Identical electrical specs and SOD123 package, but commercial-grade (non-AEC-Q101), same RoHS/Green compliance. | Lacks automotive stress test validation; unsuitable for OEM vehicle programs requiring AEC documentation traceability. | Choose for non-automotive applications where full AEC-Q101 certification is not contractually required. |
Compared with BZX84-C6V2-7-F and MMSZ5234B-7-F, MMSZ5234BQ-7-F uniquely delivers automotive-grade reliability in the compact SOD123 form factor while maintaining identical Zener parameters - making it the only drop-in option for AEC-compliant designs needing 6.2 V regulation.
Availability
MMSZ5234BQ-7-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, and medical diagnostic equipment requiring stable component supply with full AEC-Q101 traceability and green compliance.
Supply support for MMSZ5234BQ-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 with ISO/TS 16949-certified operations.
MMSZ5234BQ-7-F belongs to the MMSZ52xxB automotive Zener series, engineered specifically for voltage reference and regulation in harsh-environment electronic control units where AEC-Q101 compliance and thermal robustness are mandatory.
FAQ
What is the maximum continuous power dissipation for MMSZ5234BQ-7-F at +75°C ambient?
The device is rated for 500 mW power dissipation at lead temperature (TL) = +75°C, verified per DS18010 Rev. 28. This assumes direct thermal coupling to a heatsink or large copper pour; on standard FR-4 with 1-inch pad, derating begins above +25°C ambient per Figure 1's 338 °C/W curve.
Does MMSZ5234BQ-7-F have polarity marking, and how is it identified?
Yes - it uses a cathode band marking on the SOD123 package body, located adjacent to the cathode terminal. The band aligns with the cathode end in top-view orientation per datasheet Figure "Top View", and must be oriented toward the higher-potential node in shunt regulator configurations.
How does the temperature coefficient behave near 6.2 V nominal Zener voltage?
Per Figure 6 in DS18010, the temperature coefficient of VZ for MMSZ5234BQ-7-F is approximately +0.05%/°C near 6.2 V, indicating slight positive drift with rising temperature - a characteristic typical of mid-voltage Zeners optimized for stability across −40°C to +125°C operating range.
Is MMSZ5234BQ-7-F compatible with lead-free reflow soldering processes?
Yes - it features matte tin finish over alloy 42 leadframe, qualified per J-STD-020 Level 1 moisture sensitivity, and supports peak reflow temperatures up to 260°C. The green molding compound is UL 94V-0 rated and fully RoHS compliant, meeting IPC-J-STD-020 Class 3 requirements.
MMSZ5234BQ-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):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 370 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 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
MMSZ5234BQ-7-F FAQ
1.How can I place an order for MMSZ5234BQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5234BQ-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 MMSZ5234BQ-7-F reliable?
The price and inventory of MMSZ5234BQ-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 MMSZ5234BQ-7-F is usually 5 days.
3.What payment methods are accepted for MMSZ5234BQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5234BQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5234BQ-7-F?
MMSZ5234BQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5234BQ-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 MMSZ5234BQ-7-F?
For technical support, including MMSZ5234BQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5234BQ-7-F requirements.
6.How does Aetrix verify that MMSZ5234BQ-7-F is sourced from the original manufacturer or authorized distributors?
All MMSZ5234BQ-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 MMSZ5234BQ-7-F meets industry standards.
7.What is the process for return or replacement of MMSZ5234BQ-7-F?
All MMSZ5234BQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5234BQ-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 MMSZ5234BQ-7-F part is unused and in its original packaging.
Return procedure for MMSZ5234BQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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