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Diodes Incorporated MMSZ5234BS-7-F
- Part No.:
- MMSZ5234BS-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MMSZ5234BS-7-F.pdf
- Description:
- DIODE ZENER 6.2V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,884
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Product details
Overview
MMSZ5234BS-7-F from Diodes Incorporated is a surface-mount 6.2 V Zener diode in SOD-323 package, rated for 200 mW power dissipation, 7 Ω zener impedance at 20 mA test current, and maximum 5.0 µA reverse leakage at 4.0 V, used for precision voltage regulation and reference in low-power analog circuits.
For engineers reviewing the MMSZ5234BS-7-F datasheet, MMSZ5234BS-7-F pinout, MMSZ5234BS-7-F application, or MMSZ5234BS-7-F equivalent, key selection criteria include nominal zener voltage tolerance (±5%), thermal resistance (625 °C/W), cathode-band polarity marking, and compatibility with automated SMT assembly on FR-4 PCBs.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. It features planar die construction for consistent parametric performance and low dynamic impedance (7 Ω at IZT = 20 mA) to minimize output voltage variation during transient current changes.
The device is optimized for general-purpose voltage reference and overvoltage protection in space-constrained designs. Its SOD-323 package supports high-density layouts, and its 0.004 g mass and UL 94V-0 mold compound meet stringent reliability and safety requirements for consumer and industrial electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nominal) | 6.2 V - precise regulation point at 20 mA test current, ±5% tolerance (5.89–6.51 V) |
| Power Dissipation | 200 mW - maximum continuous DC power at 25°C ambient, derated linearly above 25°C per Fig. 1 |
| Zener Impedance | 7 Ω @ 20 mA - low dynamic resistance ensures minimal voltage shift under load current variation |
| Reverse Leakage Current | 5.0 µA @ 4.0 V - guarantees tight regulation onset and low standby power loss |
| Thermal Resistance | 625 °C/W - junction-to-ambient value measured on standard FR-4 board with recommended pad layout |
| Forward Voltage | 0.9 V @ 10 mA - enables use as clamping diode in bidirectional protection schemes |
Pinout & Package
Package: SOD-323 - ultra-small plastic surface-mount case (2.30–2.70 mm length × 1.20–1.40 mm width × 0.25–0.35 mm height), cathode identified by band marking, lead-free matte tin plating over Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive terminal in forward bias; connected to lower-potential node in Zener regulation | Accepts forward current up to 10 mA; defines conduction direction when used as clamp |
| Cathode | Negative terminal in forward bias; connected to regulated output node in Zener mode | Marked with band; carries reverse breakdown current; referenced to system ground or supply rail |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable zener voltage distribution and long-term stability under thermal cycling |
| SOD-323 package footprint | Enables placement in <1.5 mm² board area, supporting miniaturized power management and sensor interface PCBs |
| Lead-free & RoHS-compliant | Fully compliant with EU Directive 2011/65/EU; no intentionally added lead, halogen, or antimony |
| Moisture sensitivity Level 1 | Eliminates need for dry-packaging or baking prior to reflow soldering per J-STD-020D |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 6.2 V reference for ADC voltage dividers and op-amp bias networks in battery-powered IoT sensors. IC Role / Device Role / Timing Role: Zener voltage reference element establishing accurate analog measurement baseline. Use Value: Tight 5.89–6.51 V tolerance and 7 Ω impedance ensure <±10 mV drift across 0–10 mA load range. |
Use Scenario: Protecting microcontroller GPIO pins from ESD-induced transients exceeding 5 V rail in industrial HMI panels. IC Role / Device Role / Timing Role: Reverse-biased clamping diode shunting excess energy to ground before IC damage threshold. Use Value: 5.0 µA leakage at 4.0 V prevents false triggering; 0.9 V forward drop allows bidirectional clamping with series resistor. |
| Low-Power Voltage Regulator | Signal-Level Shifter |
|
Use Scenario: Generating clean 6.2 V bias for RF front-end LNA stages in sub-GHz wireless transceivers. IC Role / Device Role / Timing Role: Passive shunt regulator maintaining constant voltage despite input ripple and load variation. Use Value: 200 mW rating supports up to 32 mA max current (6.2 V × 32 mA ≈ 200 mW), sufficient for small-signal analog blocks. |
Use Scenario: Level-shifting 3.3 V logic signals to 5 V domain in mixed-voltage FPGA I/O banks. IC Role / Device Role / Timing Role: Cathode-referenced Zener used in series with pull-up to define high-level threshold. Use Value: Precise 6.2 V breakdown enables reliable 5 V logic-high detection with margin against noise and process variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C6V2 | Same 6.2 V nominal, but SOD-523 package (smaller); 150 mW rating; 10 Ω ZZT | Lower power handling and higher impedance limit use in higher-current references | Select when board area is critical and load current ≤20 mA; verify thermal layout for reduced dissipation |
| MMBZ5234BS | Same electrical specs, but SOT-23 package; 350 mW rating; same 7 Ω ZZT | Higher power capability and larger footprint support robustness in variable-temperature environments | Choose for improved thermal margin in industrial ambient (>85°C) or where manual rework is required |
Compared with BZX584C6V2 and MMBZ5234BS, MMSZ5234BS-7-F offers optimal balance of compact SOD-323 size, 200 mW rating, and low 7 Ω impedance-making it ideal for cost-sensitive, space-constrained consumer electronics requiring stable 6.2 V reference without overengineering thermal design.
Availability
MMSZ5234BS-7-F is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, and low-power regulation applications requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for MMSZ5234BS-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, manufacturing, and sales operations across Asia, Europe, and North America.
This part belongs to the MMSZ52xxBS series of surface-mount Zener diodes designed specifically for high-volume, automated assembly in consumer, computing, and industrial electronics where small size, reliability, and regulatory compliance are essential.
FAQ
What is the maximum reverse voltage that can be continuously applied without breakdown?
The MMSZ5234BS-7-F has a nominal Zener voltage of 6.2 V with a guaranteed range of 5.89–6.51 V at 20 mA. Below the minimum specified breakdown voltage (5.89 V), the device remains in high-impedance reverse state with leakage ≤5.0 µA at 4.0 V. Continuous reverse voltage below 5.89 V will not cause breakdown.
How does thermal derating affect usable power at 85°C ambient?
With RθJA = 625 °C/W and TJ(max) = +150°C, the allowable power at 85°C ambient is calculated as (150 − 85) / 625 = 0.104 W (104 mW). This is 52% of the 200 mW rating at 25°C, per the linear derating curve in Figure 1 of DS31038.
Is this diode suitable for use in automotive applications?
MMSZ5234BS-7-F is qualified to operate from −65°C to +150°C and meets RoHS and halogen-free requirements, but it is not AEC-Q200 qualified. It may be used in non-safety-critical automotive subsystems (e.g., infotainment power rails) provided full system-level qualification and thermal validation are performed by the end customer.
Can this Zener diode replace a 6.3 V or 6.0 V part in an existing design?
No-MMSZ5234BS-7-F is specified at 6.2 V (5.89–6.51 V). Substituting for 6.0 V (MMSZ5233BS) or 6.3 V (no exact match in series) risks violating voltage tolerance margins in precision references. The 6.2 V rating is intentional for applications targeting mid-point between common 6.0 V and 6.8 V standards.
MMSZ5234BS-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):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 200 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
MMSZ5234BS-7-F FAQ
1.How can I place an order for MMSZ5234BS-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5234BS-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 MMSZ5234BS-7-F reliable?
The price and inventory of MMSZ5234BS-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 MMSZ5234BS-7-F is usually 5 days.
3.What payment methods are accepted for MMSZ5234BS-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5234BS-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5234BS-7-F?
MMSZ5234BS-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5234BS-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 MMSZ5234BS-7-F?
For technical support, including MMSZ5234BS-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5234BS-7-F requirements.
6.How does Aetrix verify that MMSZ5234BS-7-F is sourced from the original manufacturer or authorized distributors?
All MMSZ5234BS-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 MMSZ5234BS-7-F meets industry standards.
7.What is the process for return or replacement of MMSZ5234BS-7-F?
All MMSZ5234BS-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5234BS-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 MMSZ5234BS-7-F part is unused and in its original packaging.
Return procedure for MMSZ5234BS-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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