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onsemi MMSZ5236BT1
- Part No.:
- MMSZ5236BT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ5236BT1.pdf
- Description:
- DIODE ZENER 7.5V 500MW SOD-123
- Quantity:
- Payment:
- Shipping:
Inventory:2,586
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Product details
Overview
MMSZ5236BT1 from ON Semiconductor is a 500 mW, ±5% tolerance Zener diode in SOD−123 package, rated for 7.5 V nominal reverse breakdown voltage at 20 mA test current, with 6 Ω dynamic impedance and 3 µA leakage current at 6 V reverse bias - used for precision voltage reference and overvoltage protection in low-power analog circuits.
For engineers reviewing the MMSZ5236BT1 datasheet, pinout, applications, or equivalent options, this device serves as a surface-mount, medium-current Zener regulator optimized for thermal equilibrium operation on FR-4/FR-5 PCBs with Class 3 ESD immunity and AEC-Q101 qualification readiness.
Technical Context
The MMSZ5236BT1 operates as a two-terminal silicon junction device where reverse-biased conduction initiates at a tightly controlled Zener voltage (7.13–7.88 V), with specified test conditions at thermal equilibrium (TL = 30°C ±1°C) and 25°C ambient. Its 6 Ω Zener impedance at 20 mA ensures stable regulation under moderate load variation.
Thermal design is constrained by 340°C/W junction-to-ambient resistance and 150°C/W junction-to-lead resistance, requiring board-level thermal management when operating near 500 mW dissipation. The device exhibits a positive temperature coefficient typical of mid-voltage Zeners in this series.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.13–7.88 V @ IZT = 20 mA - defines regulated output voltage window under standard test conditions |
| Power Dissipation | 500 mW on FR-5 board @ TL = 75°C - sets maximum continuous DC power handling before derating |
| Zener Impedance | 6 Ω @ IZT = 20 mA - indicates small-signal AC resistance affecting regulation stability under dynamic loads |
| Leakage Current | 3 µA @ VR = 6 V - quantifies off-state conduction loss below breakdown threshold |
| Junction Temp Range | −55°C to +150°C - supports operation in extended industrial and automotive ambient environments |
| ESD Rating | Class 3 (>16 kV HBM) - enables robust handling in automated assembly without special ESD controls |
| Tolerance | ±5% - specifies initial voltage accuracy band for calibration-critical reference applications |
Pinout & Package
SOD−123 surface-mount plastic package (Case 425, Style 1), void-free thermosetting material, UL 94 V−0 flammability rating, cathode indicated by polarity band. Dimensions: 2.54–2.84 mm length × 1.40–1.80 mm width × 0.94–1.35 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener anode connection point | Connected to higher-potential node in reverse-bias configuration; polarity band identifies this terminal |
| 2 (Anode) | Zener cathode connection point | Connected to lower-potential node (typically ground or return path); completes reverse-bias circuit |
Key Features
| Feature | Design Value |
|---|---|
| Thermal Equilibrium Spec | Zener voltage measured at TL = 30°C ±1°C - ensures repeatable, board-temperature-referenced calibration |
| Pb-Free Construction | RoHS-compliant SOD−123 package - meets global environmental compliance without solderability compromise |
| Automated Assembly Optimized | Standard footprint per ON Semi SOLDERING FOOTPRINT spec - enables high-yield pick-and-place and reflow |
| High-Density Packaging | Small outline (2.7 × 1.6 × 1.1 mm typical) - supports compact PCB layouts in space-constrained modules |
| AEC-Q101 Readiness | SZ-prefix variant available - supports automotive qualification pathways with site- and control-change traceability |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Negotiation Reference |
|---|---|
Use Scenario: Stabilizing reference voltage for 12-bit ADC front-end in temperature/humidity transmitters. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference providing fixed 7.5 V bias to op-amp rail-splitter network. Use Value: ±5% tolerance and 6 Ω impedance ensure <0.5% full-scale error contribution to sensor output linearity. | Use Scenario: Clamping CC line voltage during USB PD communication handshake in portable chargers. IC Role / Device Role / Timing Role: Overvoltage protector limiting CC pin excursion to safe levels during fault events. Use Value: 3 µA leakage at 6 V prevents false detection while 500 mW surge rating absorbs transient energy. |
| Programmable Logic Controller I/O Protection | Medical Wearable Battery Monitor |
Use Scenario: Protecting 24 V digital input channels from induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Shunt clamp absorbing line transients before reaching optocoupler input stage. Use Value: Class 3 ESD rating and 150°C max junction temperature support unattended operation in harsh EMI environments. | Use Scenario: Providing stable reference for fuel gauge IC measuring Li-ion cell voltage in hearables. IC Role / Device Role / Timing Role: Low-power Zener reference enabling accurate 0.1% SOC estimation across battery discharge curve. Use Value: 7.5 V nominal voltage allows resistor-divider scaling to match 1.2 V internal reference, minimizing quiescent current impact. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C7V5 | 7.5 V ±5%, 300 mW, SOD-323 package, 15 Ω ZZT | Lower power rating and higher impedance limit use in higher-current regulation | Select when board space is more constrained than power capability |
| MMSZ4689 | 7.5 V ±5%, 500 mW, SOD-123, 10 Ω ZZT, 10 µA IR @ 6 V | Higher leakage reduces accuracy in ultra-low-power sleep modes | Select when legacy BOM compatibility outweighs minor leakage penalty |
Compared with MMSZ5236BT1, BZX584C7V5 offers smaller footprint but reduced power and regulation fidelity, while MMSZ4689 matches power and package but trades 3 µA vs. 10 µA leakage - making MMSZ5236BT1 optimal for precision, medium-current Zener reference designs.
Availability
MMSZ5236BT1 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C power negotiation reference, and programmable logic controller I/O protection requiring stable component supply across production lifecycles.
Supply support for MMSZ5236BT1 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
ON Semiconductor is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MMSZ52xxxT1G series is designed for general-purpose, medium-current voltage regulation in surface-mount systems where reliability, thermal stability, and AEC-Q101 scalability are required.
FAQ
What is the nominal Zener voltage of MMSZ5236BT1 and how is it tested?
The nominal Zener voltage of MMSZ5236BT1 is 7.5 V, with a guaranteed range of 7.13 V to 7.88 V at 20 mA test current (IZT). It is measured under thermal equilibrium conditions at lead temperature TL = 30°C ±1°C, not ambient temperature - ensuring reproducible calibration independent of board layout thermal gradients. This specification directly applies to MMSZ5236BT1 and is validated per ON Semiconductor's HBD854/D methodology.
Does MMSZ5236BT1 support automotive applications?
MMSZ5236BT1 itself is not AEC-Q101 qualified, but its SZMMSZ5236BT1G variant is fully qualified and PPAP-capable. The base MMSZ5236BT1 shares identical electrical and mechanical specifications, including 150°C junction rating and Class 3 ESD immunity, making it suitable for pre-qualification prototyping and non-safety-critical automotive subsystems. Designers targeting production automotive use should specify SZMMSZ5236BT1G to ensure compliance documentation traceability.
What is the maximum steady-state power dissipation for MMSZ5236BT1 on a standard PCB?
MMSZ5236BT1 delivers 500 mW maximum power dissipation on FR-5 board at lead temperature TL = 75°C. Above 75°C, power must be linearly derated at 6.7 mW/°C. This rating assumes minimum recommended footprint per ON Semiconductor's SOLDERING FOOTPRINT spec - actual dissipation depends on copper area, layer count, and airflow. The 500 mW limit applies specifically to MMSZ5236BT1 and is confirmed in the "Maximum Ratings" table of its official datasheet.
How does the Zener impedance of MMSZ5236BT1 affect voltage regulation accuracy?
MMSZ5236BT1 has a maximum Zener impedance (ZZT) of 6 Ω at 20 mA, meaning a 1 mA change in Zener current causes ≤6 mV output deviation. This low impedance enables tight regulation under varying load conditions - critical in precision references where <0.1% line/load regulation is required. The value is measured at 1 kHz with 0.1×DC current superimposed, and applies exclusively to MMSZ5236BT1 per its "Electrical Characteristics" table.
Can MMSZ5236BT1 be used in place of older MMSZ5236B variants?
Yes - MMSZ5236BT1 is a direct replacement for legacy MMSZ5236B parts, retaining identical electrical specs, SOD-123 package, and marking (F1). The "T1" suffix denotes tape-and-reel packaging (3,000 units/reel), and the "G" in MMSZ5236BT1G indicates Pb-free construction; both share the same die and characterization. No layout or schematic changes are needed when upgrading to MMSZ5236BT1, and all performance data in the datasheet applies to this exact part number.
MMSZ5236BT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 6 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 6 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
MMSZ5236BT1 FAQ
1.How can I place an order for MMSZ5236BT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5236BT1 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 MMSZ5236BT1 reliable?
The price and inventory of MMSZ5236BT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ5236BT1 is usually 5 days.
3.What payment methods are accepted for MMSZ5236BT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5236BT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5236BT1?
MMSZ5236BT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5236BT1 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 MMSZ5236BT1?
For technical support, including MMSZ5236BT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5236BT1 requirements.
6.How does Aetrix verify that MMSZ5236BT1 is sourced from the original manufacturer or authorized distributors?
All MMSZ5236BT1 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 MMSZ5236BT1 meets industry standards.
7.What is the process for return or replacement of MMSZ5236BT1?
All MMSZ5236BT1 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5236BT1, 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 MMSZ5236BT1 part is unused and in its original packaging.
Return procedure for MMSZ5236BT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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