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onsemi MMSZ5236ET1
- Part No.:
- MMSZ5236ET1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ5236ET1.pdf
- Description:
- DIODE ZENER 7.5V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,121
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Product details
Overview
MMSZ5236ET1 from onsemi is a 7.5 V ±5% Zener diode in SOD-123 package, rated for 500 mW power dissipation at 75 °C on FR-5 board, with 6 Ω dynamic impedance at 20 mA test current and 0.25 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 MMSZ5236ET1 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal derating behavior, cathode/anode terminal mapping, and direct alternatives for voltage regulation in space-constrained PCB designs.
Technical Context
This device operates as a two-terminal silicon Zener diode optimized for stable reverse-biased breakdown regulation. Its 7.5 V nominal Zener voltage is specified at 20 mA (IZT), with temperature coefficient near zero in the 6–8 V range per onsemi's typical TC curves.
It exhibits 500 Ω maximum Zener impedance at knee current (IZK = 0.25 mA) and supports non-repetitive surge pulses up to 225 W (8 × 20 μs), enabling transient suppression in mixed-signal interfaces without external clamping components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.13–7.88 V @ IZT = 20 mA - defines regulated output voltage tolerance band under standard test conditions |
| Power Dissipation (PD) | 500 mW @ TL = 75 °C - maximum continuous power on FR-5 board before thermal derating begins |
| Zener Impedance (ZZT) | 6 Ω max @ IZT = 20 mA - ensures minimal output voltage variation under load current changes |
| Leakage Current (IR) | 0.25 μA max @ VR = 6 V - guarantees low standby current in battery-powered voltage monitor circuits |
| Thermal Resistance (RJA) | 340 °C/W - determines junction-to-ambient temperature rise under steady-state operation |
| ESD Rating | Class 3 (>16 kV HBM) - enables handling without special ESD controls during manual assembly |
Pinout & Package
SOD-123 surface-mount plastic package (1.60 × 2.69 × 1.16 mm), void-free thermosetting case with corrosion-resistant finish, cathode indicated by polarity band. Maximum soldering temperature: 260 °C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-biased voltage reference terminal |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential rail; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW Power Rating | Enables stable voltage reference in compact DC-DC feedback networks without heatsinking |
| ±5% Zener Voltage Tolerance | Supports cost-sensitive designs where tight regulation is balanced against BOM simplicity |
| 225 W Surge Capability | Provides single-device transient suppression for I/O lines exposed to EFT or ESD events |
| Class 3 ESD Robustness | Reduces need for external ESD protection in front-end sensor signal conditioning stages |
| Pb-Free SOD-123 Package | Meets RoHS compliance requirements while maintaining compatibility with standard reflow profiles |
Applications
| Industrial Sensor Signal Conditioning | USB-C Port Overvoltage Clamp |
|---|---|
Use Scenario: Regulating reference voltage for 12-bit ADC input scaling in temperature transmitters. IC Role / Device Role / Timing Role: Zener diode providing stable 7.5 V reference for op-amp gain-setting network. Use Value: Maintains <±0.5% full-scale error across −40 °C to +85 °C due to low TC in 7.5 V range. | Use Scenario: Clamping VBUS line against accidental 12 V adapter misconnection in portable accessories. IC Role / Device Role / Timing Role: Standby shunt regulator absorbing fault energy until system-level OVP triggers shutdown. Use Value: Limits peak VBUS to ≤8.5 V during 225 W surge pulse without degradation or latch-up. |
| Low-Power IoT Node Voltage Monitor | Automotive Body Control Module Reference |
Use Scenario: Detecting brown-out condition in coin-cell powered BLE beacon firmware. IC Role / Device Role / Timing Role: Reverse-biased Zener feeding comparator input to flag supply drop below 7.1 V. Use Value: Draws only 0.25 μA leakage at 6 V, extending battery life beyond 5 years in sleep mode. | Use Scenario: Providing stable bias for LIN bus transceiver internal regulators in door module ECUs. IC Role / Device Role / Timing Role: AEC-Q101 qualified Zener establishing 7.5 V local reference independent of main 12 V rail noise. Use Value: Operates reliably across −40 °C to +125 °C junction temperature with no parameter drift beyond spec limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C7V5 | Same 7.5 V nominal, but 300 mW rating and SOD-323 package (smaller footprint, higher RJA) | Lower power handling limits use in >10 mA regulation paths; better suited for ultra-dense RF modules | Select when board area is constrained and thermal margin exceeds 100 °C/W |
| MMBZ5236ET1G | Identical electrical specs and SOD-123 package, but in 3-pin SOT-23 configuration with anode/cathode/NC pinout | Requires PCB redesign due to different pin count and layout; not drop-in compatible | Choose only if existing SOT-23 footprint must be reused with identical Zener performance |
Compared with BZX584C7V5 and MMBZ5236ET1G, the MMSZ5236ET1 offers optimal balance of power capability, thermal resistance, and industry-standard SOD-123 placement - making it preferred for general-purpose 7.5 V regulation where reliability and manufacturability are prioritized over minimal size.
Availability
MMSZ5236ET1 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C port overvoltage clamp, and low-power IoT node voltage monitor applications requiring stable component supply and long-term lifecycle support.
Supply support for MMSZ5236ET1 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
onsemi is a global semiconductor manufacturer specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The MMSZ52xxET1G series was designed for high-volume, cost-sensitive voltage reference and protection functions in space-constrained surface-mount applications - emphasizing robustness, repeatability, and Pb-free compliance.
FAQ
What is the nominal Zener voltage of the MMSZ5236ET1 and how is it tested?
The MMSZ5236ET1 has a nominal Zener voltage of 7.5 V, with a guaranteed range of 7.13 V to 7.88 V at 20 mA test current (IZT). This value is measured under thermal equilibrium at lead temperature TL = 30 °C ±1 °C, per onsemi's standardized test methodology documented in the datasheet revision 10.
Does the MMSZ5236ET1 meet automotive qualification standards?
No - the MMSZ5236ET1 is not AEC-Q101 qualified. The SZ-prefix variant (e.g., SZMMSZ5236ET1G) carries that qualification. The MMSZ5236ET1 is intended for commercial and industrial applications, with operating junction temperature range of −55 °C to +150 °C but without PPAP or automotive-specific process controls.
What is the maximum allowable surge power for the MMSZ5236ET1 and under what waveform?
The MMSZ5236ET1 supports a non-repetitive peak surge power of 225 W, defined for an 8 × 20 μs rectangular pulse waveform at TA = 25 °C. This rating enables transient suppression in I/O protection circuits without requiring additional TVS devices.
How does the MMSZ5236ET1's Zener impedance affect its regulation accuracy?
The MMSZ5236ET1 has a maximum Zener impedance (ZZT) of 6 Ω at 20 mA, meaning a 1 mA change in Zener current causes ≤6 mV output shift. This low impedance ensures stable regulation in feedback loops and reference supplies where load-induced voltage drift must remain under 10 mV.
Can the MMSZ5236ET1 be used in place of the MMSZ5236ET1G?
Yes - the MMSZ5236ET1 and MMSZ5236ET1G share identical electrical specifications and SOD-123 packaging. The "G" suffix denotes Pb-free compliance; both are functionally interchangeable in new designs, though MMSZ5236ET1G is required for RoHS-compliant production.
MMSZ5236ET1 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
MMSZ5236ET1 FAQ
1.How can I place an order for MMSZ5236ET1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5236ET1 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 MMSZ5236ET1 reliable?
The price and inventory of MMSZ5236ET1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ5236ET1 is usually 5 days.
3.What payment methods are accepted for MMSZ5236ET1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5236ET1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5236ET1?
MMSZ5236ET1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5236ET1 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 MMSZ5236ET1?
For technical support, including MMSZ5236ET1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5236ET1 requirements.
6.How does Aetrix verify that MMSZ5236ET1 is sourced from the original manufacturer or authorized distributors?
All MMSZ5236ET1 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 MMSZ5236ET1 meets industry standards.
7.What is the process for return or replacement of MMSZ5236ET1?
All MMSZ5236ET1 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5236ET1, 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 MMSZ5236ET1 part is unused and in its original packaging.
Return procedure for MMSZ5236ET1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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