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Diodes Incorporated MMSZ5252BS-7-F
- Part No.:
- MMSZ5252BS-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MMSZ5252BS-7-F.pdf
- Description:
- DIODE ZENER 24V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:25,910
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Product details
Overview
MMSZ5252BS-7-F from Diodes Incorporated is a surface-mount 24 V Zener diode in SOD-323 package, rated for 200 mW power dissipation, with nominal Zener voltage 24 V (22.8–25.2 V at 5.2 mA), Zener impedance 33 Ω at test current, and reverse leakage ≤0.1 µA at 18 V, used for precision voltage regulation and reference in low-power analog circuits.
For engineers reviewing the MMSZ5252BS-7-F datasheet, MMSZ5252BS-7-F pinout, MMSZ5252BS-7-F application, or MMSZ5252BS-7-F equivalent, key selection considerations include Zener voltage tolerance, dynamic impedance at operating current, thermal resistance (625 °C/W), and SOD-323 footprint compatibility in space-constrained PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load or supply conditions. It features planar die construction for consistent parametric performance and low leakage, with specified test current of 5.2 mA and maximum Zener impedance of 33 Ω at that current.
Thermal derating begins above +25°C ambient, following a linear power derating curve down to zero dissipation at +150°C. Its SOD-323 package delivers compact mounting while maintaining 625 °C/W junction-to-ambient thermal resistance on standard FR-4 board with recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V nominal, 22.8–25.2 V range at IZT = 5.2 mA - defines regulation setpoint tolerance for feedback or reference use |
| Power Dissipation (PD) | 200 mW at TA = +25°C - limits continuous current to ~8.3 mA at 24 V without derating |
| Zener Impedance (ZZT) | 33 Ω at IZT = 5.2 mA - determines output voltage variation under small-signal load changes |
| Reverse Leakage (IR) | ≤0.1 µA at VR = 18 V - ensures minimal error current in high-impedance reference nodes |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - relevant for polarity verification and ESD protection path design |
| Thermal Resistance (RθJA) | 625 °C/W - requires careful layout to avoid exceeding 150°C junction temperature in enclosed environments |
Pinout & Package
Package: SOD-323 - ultra-small plastic surface-mount case (2.3–2.7 mm length, 1.2–1.4 mm width, 0.25–0.35 mm thickness), cathode marked by band on top surface, compatible with automated pick-and-place and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to lower-potential node; forms reference return path in shunt regulator configuration |
| Cathode | Reverse breakdown terminal / regulated output node | Connected to input rail; clamps voltage to VZ when reverse biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures tight VZ distribution and repeatable Zener impedance across production lots |
| SOD-323 package | Enables <1.0 mm² PCB area usage and supports high-density routing in portable electronics |
| Lead-free & RoHS-compliant | Meets EU Directive 2011/65/EU with matte tin plating over Alloy 42 leadframe |
| Halogen- and antimony-free | Contains <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - satisfies green manufacturing requirements |
Applications
| Portable Power Management | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating bias voltage for low-power ADC reference buffers in battery-operated IoT sensors. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 24 V-derived scaling reference for ratiometric measurements. Use Value: Low 0.1 µA leakage preserves battery life; 33 Ω ZZT minimizes reference drift under varying sensor load currents. |
Use Scenario: Setting precise trip point for overvoltage detection in 24 V industrial PLC input modules. IC Role / Device Role / Timing Role: Zener clamp defining comparator reference threshold in discrete protection circuitry. Use Value: Tight 22.8–25.2 V tolerance ensures reliable fault detection within ±5% window; SOD-323 enables compact DIN-rail mount design. |
| Automotive Body Control Unit | Medical Diagnostic Instrumentation |
Use Scenario: Providing stable reference for LIN bus transceiver biasing in automotive door module ECUs. IC Role / Device Role / Timing Role: Voltage stabilization element in isolated 24 V auxiliary rail derived from main battery. Use Value: -65°C to +150°C operating range supports under-hood deployment; RoHS/green compliance meets automotive OEM material declarations. |
Use Scenario: Calibrating photodiode amplifier gain in handheld pulse oximeters requiring traceable voltage references. IC Role / Device Role / Timing Role: Precision shunt reference in low-noise, low-drift analog front-end signal chain. Use Value: Planar die construction yields low long-term drift; 0.9 V forward voltage aids in polarity verification during manual assembly QA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C24 | Same 24 V nominal Zener, but 300 mW rating and SOD-523 package; ZZT = 40 Ω at 5 mA | Higher power handling allows greater current margin; smaller SOD-523 footprint may complicate rework | Select when >200 mW dissipation headroom is required and board real estate permits tighter pitch placement |
| MMBZ5252BS | Identical electrical specs but in SOT-23 package; same 200 mW rating, 33 Ω ZZT, and 22.8–25.2 V range | Larger SOT-23 improves thermal relief and hand-solderability but occupies ~3× more PCB area | Prefer for prototyping, repair, or designs where thermal management outweighs size constraints |
Compared with BZX584-C24 and MMBZ5252BS, MMSZ5252BS-7-F offers optimal balance of miniaturization (SOD-323), certified green compliance, and proven stability in high-volume automated assembly-making it preferred for space-limited, RoHS-mandated production.
Availability
MMSZ5252BS-7-F is available at Aetrix Electronics and suitable for portable power management, industrial sensor signal conditioning, automotive body control units, and medical diagnostic instrumentation requiring stable component supply and full RoHS/green compliance.
Supply support for MMSZ5252BS-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.
MMSZ5252BS-7-F belongs to the MMSZ52xxBS series of general-purpose Zener diodes designed for cost-sensitive, high-reliability voltage regulation in consumer, industrial, and automotive applications.
FAQ
What is the maximum reverse voltage this Zener can withstand before breakdown?
The MMSZ5252BS-7-F has a nominal Zener voltage of 24 V, with guaranteed breakdown occurring between 22.8 V and 25.2 V at 5.2 mA test current. It is not rated for sustained operation above 25.2 V in reverse bias; exceeding this risks thermal runaway if power dissipation exceeds 200 mW.
Can this device be used in series or parallel configurations?
Series connection is acceptable for higher voltage references, provided current matching and thermal coupling are managed. Parallel use is strongly discouraged due to mismatched Zener voltages causing current hogging-only identical lots with bin-matched VZ should be considered, and even then, derating by ≥30% is required.
Does the SOD-323 package support reflow soldering per JEDEC J-STD-020?
Yes-the SOD-323 package is qualified for moisture sensitivity level 1 per J-STD-020D, meaning it may be stored indefinitely at ≤30°C/60% RH and processed using standard Pb-free reflow profiles (peak 260°C) without baking or special handling.
How does temperature affect its Zener voltage stability?
This device exhibits a positive temperature coefficient near 24 V, with typical TC of +0.07%/°C. Over –65°C to +150°C, VZ shifts approximately ±1.2% from nominal-verified via characterization data in DS31038 Rev. 13, Figure 2.
MMSZ5252BS-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):
- 24 V
- Tolerance:
- ±5%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 33 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 18 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
MMSZ5252BS-7-F FAQ
1.How can I place an order for MMSZ5252BS-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5252BS-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 MMSZ5252BS-7-F reliable?
The price and inventory of MMSZ5252BS-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 MMSZ5252BS-7-F is usually 5 days.
3.What payment methods are accepted for MMSZ5252BS-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5252BS-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5252BS-7-F?
MMSZ5252BS-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5252BS-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 MMSZ5252BS-7-F?
For technical support, including MMSZ5252BS-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5252BS-7-F requirements.
6.How does Aetrix verify that MMSZ5252BS-7-F is sourced from the original manufacturer or authorized distributors?
All MMSZ5252BS-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 MMSZ5252BS-7-F meets industry standards.
7.What is the process for return or replacement of MMSZ5252BS-7-F?
All MMSZ5252BS-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5252BS-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 MMSZ5252BS-7-F part is unused and in its original packaging.
Return procedure for MMSZ5252BS-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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