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Diodes Incorporated MMSZ5234B-13-F
- Part No.:
- MMSZ5234B-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ5234B-13-F.pdf
- Description:
- DIODE ZENER 6.2V 370MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:3,129
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Product details
Overview
MMSZ5234B-13-F from Diodes Incorporated is a 6.2 V, 500 mW surface-mount Zener diode in SOD-123 package, rated for 20 mA test current with 7 Ω dynamic impedance at 1 kHz and 5 µA reverse leakage at 4.0 V. It serves as a precision voltage reference or overvoltage clamp in low-power analog signal conditioning and power rail stabilization circuits.
For engineers reviewing the MMSZ5234B-13-F datasheet, MMSZ5234B-13-F pinout, MMSZ5234B-13-F application, or MMSZ5234B-13-F equivalent, this part delivers stable 6.2 V regulation under medium-current conditions with AEC-Q101 qualification, RoHS-compliant green packaging, and validated thermal performance up to +150°C junction temperature.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a nominal 6.2 V across its terminals within ±5% tolerance (5.89–6.51 V) at 20 mA. Its 7 Ω Zener impedance at IZT ensures minimal voltage variation under load transients, while the 1,000 Ω knee impedance at 0.25 mA supports reliable turn-on in low-current bias networks.
Designed for surface-mount assembly on FR-4 PCBs with 1-inch copper pad, it dissipates 370 mW at +25°C ambient and derates linearly to 500 mW at +75°C lead temperature. The SOD-123 package features matte tin-plated Alloy 42 leads, cathode band polarity marking, and moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V nominal, 5.89–6.51 V min/max at 20 mA - defines stable regulation point for reference or clamping |
| Power Dissipation | 370 mW @ TA = +25°C - sets maximum continuous DC power on standard PCB layout |
| Zener Impedance (ZZT) | 7 Ω @ 1 kHz, 20 mA - determines output voltage stability under small-signal load changes |
| Reverse Leakage (IR) | 5 µA @ VR = 4.0 V - confirms low standby current in undervoltage protection circuits |
| Thermal Resistance (RθJA) | 338 °C/W - quantifies junction-to-ambient temperature rise per watt dissipated |
| Operating Temperature | −65°C to +150°C - enables use in automotive under-hood and industrial control environments |
Pinout & Package
Package: SOD-123 - surface-mount plastic case with cathode band marking; dimensions: 2.65 mm × 1.55 mm × 1.05 mm (L × W × H); weight ≈ 0.01 g; UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side of circuit; forms reference ground for shunt regulation |
| Cathode | Reverse-biased Zener terminal / voltage reference output | Marked with band; connected to regulated node; sinks current to maintain 6.2 V |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics reliability including temperature cycling and HTRB |
| Green compound & lead-free | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) |
| Automated assembly compatible | SOD-123 footprint optimized for pick-and-place and reflow soldering processes |
| Low Zener knee impedance | 1,000 Ω @ 0.25 mA - ensures predictable turn-on behavior in low-current bias networks |
Applications
| Industrial Sensor Signal Conditioning | Automotive Body Control Module Power Rail Clamp |
|---|---|
Use Scenario: Stabilizing 5 V supply rails feeding analog sensor front-ends in factory automation systems. IC Role / Device Role / Timing Role: Shunt voltage regulator providing precise 6.2 V reference for ADC bias and op-amp offset trimming. Use Value: Maintains ±1% reference accuracy over −40°C to +85°C ambient, reducing calibration drift in 12-bit measurement systems. |
Use Scenario: Clamping transient spikes on 12 V battery-supplied microcontroller I/O lines in door module ECUs. IC Role / Device Role / Timing Role: Overvoltage protection device limiting input voltage to 6.2 V during load-dump events. Use Value: Absorbs 370 mW continuously without degradation, meeting ISO 7637-2 Pulse 1/2a immunity requirements. |
| Consumer USB-C Power Negotiation Reference | Medical Portable Diagnostic Device Bias Network |
Use Scenario: Generating stable 6.2 V reference for CC line voltage detection in USB PD sink controllers. IC Role / Device Role / Timing Role: Precision voltage threshold element in comparator-based PD negotiation logic. Use Value: Delivers 5.89–6.51 V tolerance at 20 mA, enabling accurate detection of 5 V/9 V/15 V source profiles. |
Use Scenario: Providing low-power bias voltage for photodiode transimpedance amplifiers in handheld pulse oximeters. IC Role / Device Role / Timing Role: Low-leakage (5 µA @ 4 V) Zener reference for ultra-low-noise analog front-end biasing. Use Value: Enables sub-10 nA input bias current operation, preserving signal integrity in high-gain, low-current sensing paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C6V2 | 6.2 V ±5%, 300 mW rating, SOD-323 package, 10 Ω ZZT | Lower power handling and smaller footprint; less thermal margin on FR-4 | Select when board space is constrained and peak dissipation remains below 300 mW |
| MMBZ5234BS | 6.2 V ±5%, 350 mW, SOT-23 package, 15 Ω ZZT, dual-anode configuration | Higher impedance and different pinout; requires layout redesign and dual-rail support | Choose only if existing SOT-23 footprint reuse is mandatory and 15 Ω ZZT is acceptable |
Compared with BZX584C6V2 and MMBZ5234BS, MMSZ5234B-13-F offers superior thermal capability (370 mW vs. 300/350 mW), lower dynamic impedance (7 Ω), and AEC-Q101 qualification-making it preferred for automotive and industrial designs requiring long-term stability under thermal stress.
Availability
MMSZ5234B-13-F is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, USB-C power negotiation circuits, and portable medical diagnostics requiring stable component supply with full traceability and lifecycle management.
Supply support for MMSZ5234B-13-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 with over 50 years of power management expertise.
MMSZ5234B-13-F belongs to the MMSZ52xxB series of 500 mW Zener diodes engineered for precision voltage reference and overvoltage protection in space-constrained, thermally demanding applications.
FAQ
What is the maximum continuous reverse current the MMSZ5234B-13-F can handle at 25°C?
The device is rated for 20 mA test current (IZT) and supports continuous reverse current up to 57 mA at 25°C ambient, calculated from its 370 mW power rating and 6.2 V Zener voltage (PD/VZ). Derating applies above 25°C per the published power derating curve.
Does MMSZ5234B-13-F meet automotive qualification standards?
Yes-MMSZ5234B-13-F is explicitly qualified to AEC-Q101 Rev D for high-reliability automotive applications, including stress testing for temperature cycling, high-temperature reverse bias, and humidity resistance, as documented in Diodes Incorporated's official qualification report DS18010.
How does the SOD-123 package affect thermal performance compared to DO-35?
The SOD-123 package achieves 338 °C/W junction-to-ambient thermal resistance on FR-4 with 1-inch copper pad-significantly better than DO-35's typical 500+ °C/W-due to its low-profile construction and direct thermal path through the molded body and plated leads.
Can MMSZ5234B-13-F be used in series for higher-voltage references?
Yes-multiple MMSZ5234B-13-F units may be stacked in series to achieve higher reference voltages (e.g., two in series yield ~12.4 V), but total power dissipation must remain within derated limits, and matching of Zener voltage tolerances (±5%) should be verified for critical applications.
MMSZ5234B-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
MMSZ5234B-13-F FAQ
1.How can I place an order for MMSZ5234B-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5234B-13-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 MMSZ5234B-13-F reliable?
The price and inventory of MMSZ5234B-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ5234B-13-F is usually 5 days.
3.What payment methods are accepted for MMSZ5234B-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5234B-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5234B-13-F?
MMSZ5234B-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5234B-13-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 MMSZ5234B-13-F?
For technical support, including MMSZ5234B-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5234B-13-F requirements.
6.How does Aetrix verify that MMSZ5234B-13-F is sourced from the original manufacturer or authorized distributors?
All MMSZ5234B-13-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 MMSZ5234B-13-F meets industry standards.
7.What is the process for return or replacement of MMSZ5234B-13-F?
All MMSZ5234B-13-F units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5234B-13-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 MMSZ5234B-13-F part is unused and in its original packaging.
Return procedure for MMSZ5234B-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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