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onsemi SZMMSZ5236BT1G
- Part No.:
- SZMMSZ5236BT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
SZMMSZ5236BT1G.pdf
- Description:
- DIODE ZENER 7.5V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:16,433
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Product details
Overview
SZMMSZ5236BT1G from onsemi is a 7.5 V ±5% Zener diode in SOD−123 package, rated for 500 mW power dissipation at TL = 75°C, with 6 Ω dynamic impedance at 20 mA test current and 0.25 μA leakage at 6 V reverse bias. It serves as a precision voltage reference or overvoltage clamp in low-power analog sensing and automotive power supply monitoring circuits.
For engineers reviewing the SZMMSZ5236BT1G datasheet, pinout, applications, or equivalent options, key selection criteria include its 7.5 V nominal Zener voltage, ±5% tolerance, 6 Ω Zener impedance at IZT = 20 mA, thermal equilibrium voltage specification method, and AEC−Q101 qualification for automotive use.
Technical Context
This device operates as a two-terminal silicon Zener diode with reverse-biased breakdown regulation. Its Zener voltage is specified under thermal equilibrium conditions (TL = 30°C ±1°C), ensuring stable voltage reference behavior independent of transient self-heating during measurement.
The SOD−123 package enables automated surface-mount assembly and supports 500 mW dissipation on FR−5 board with 340°C/W junction-to-ambient thermal resistance. ESD robustness exceeds 16 kV per Human Body Model, and it meets UL 94 V−0 flammability rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.13–7.88 V @ IZT = 20 mA; defines regulated output voltage range under thermal equilibrium |
| Power Dissipation (PD) | 500 mW @ TL = 75°C; maximum steady-state power before thermal derating begins |
| Zener Impedance (ZZT) | 6 Ω @ IZT = 20 mA; low dynamic resistance ensures tight voltage regulation under load variation |
| Leakage Current (IR) | 0.25 μA @ VR = 6 V; minimal off-state current preserves battery life in always-on circuits |
| Forward Voltage (VF) | ≤0.95 V @ IF = 10 mA; enables use as low-drop rectifier or clamping diode in dual-role designs |
| ESD Rating | Class 3 (>16 kV HBM); withstands handling and system-level electrostatic discharge without degradation |
| AEC−Q101 Qualified | Validated for automotive applications including engine control modules and body electronics |
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.
| 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 (e.g., ground or return path); completes reverse-bias circuit |
Key Features
| Feature | Design Value |
|---|---|
| Thermal Equilibrium Voltage Spec | Zener voltage measured at TL = 30°C ±1°C, eliminating self-heating artifacts for repeatable reference accuracy |
| Pb-Free & RoHS Compliant | Meets global environmental regulations without compromising solderability or reliability |
| Automated Assembly Optimized | SOD−123 footprint and marking design support high-yield pick-and-place and reflow processes |
| High-Density Packaging | Small 1.60 × 2.69 mm outline enables placement in space-constrained PCB layouts |
| Stable Temperature Coefficient | TC ≈ +3.5 mV/°C near 7.5 V (per Figure 1), enabling predictable drift compensation in temperature-sensitive references |
Applications
| Automotive Power Monitoring | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Monitoring 12 V battery rail in engine control units to detect undervoltage or overvoltage faults. IC Role / Device Role / Timing Role: Zener diode provides stable 7.5 V reference for comparator input against which battery voltage is scaled and compared. Use Value: Enables accurate fault detection within ±5% voltage window while surviving automotive temperature cycling (−40°C to +125°C). | Use Scenario: Biasing and clamping front-end op-amp inputs in 4–20 mA current loop transmitters. IC Role / Device Role / Timing Role: Acts as bidirectional voltage clamp to protect amplifier inputs from ESD and transient overvoltage events. Use Value: 16 kV HBM ESD rating and low 6 Ω ZZT ensure signal integrity and long-term reliability in noisy industrial environments. |
| Consumer Battery Protection | Medical Diagnostic Equipment Reference |
Use Scenario: Overvoltage protection for lithium-ion battery charging circuits in portable medical devices. IC Role / Device Role / Timing Role: Shunts excess voltage above 7.5 V to ground during fast transient events, preventing damage to downstream ICs. Use Value: 500 mW power rating and thermal equilibrium specification allow predictable energy absorption without thermal runaway. | Use Scenario: Providing stable excitation voltage for precision resistive bridge sensors in patient monitoring systems. IC Role / Device Role / Timing Role: Functions as low-noise, low-drift voltage reference source for analog front-end ADC drivers. Use Value: ±5% tolerance and <0.25 μA leakage at 6 V ensure minimal offset error and extended battery runtime in battery-powered diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C7V5 | 7.5 V ±5%, SOD-323 package, 300 mW rating, 15 Ω ZZT @ 5 mA | Lower power rating and higher impedance limit use in higher-current regulation or tighter tolerance apps | Preferred where smaller footprint is critical and 300 mW suffices |
| MMSZ5236BT1G | Same Zener voltage and tolerance, identical SOD−123 package, but non-automotive grade and no AEC−Q101 qualification | Not qualified for automotive use; suitable only for commercial/industrial applications | Select when AEC−Q101 compliance is not required and cost sensitivity is high |
Compared with BZX584C7V5 and MMSZ5236BT1G, SZMMSZ5236BT1G delivers superior thermal stability via thermal-equilibrium voltage specification, automotive-grade reliability through AEC−Q101 validation, and lower dynamic impedance-making it optimal for safety-critical voltage reference and clamp functions where long-term drift and field failure risk must be minimized.
Availability
SZMMSZ5236BT1G is available at Aetrix Electronics and suitable for automotive power monitoring, industrial sensor conditioning, and consumer battery protection requiring stable component supply, traceable sourcing, and lifecycle continuity.
Supply support for SZMMSZ5236BT1G 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MMSZ52xxxT1G/SZMMSZ52xxxT1G series was designed specifically for compact, high-reliability Zener regulation in automotive and industrial surface-mount systems-emphasizing thermal stability, ESD robustness, and AEC−Q101 compliance.
FAQ
What is the nominal Zener voltage and tolerance of SZMMSZ5236BT1G?
The nominal Zener voltage of SZMMSZ5236BT1G is 7.5 V with a ±5% tolerance, meaning the actual measured voltage falls between 7.13 V and 7.88 V when tested under thermal equilibrium conditions (TL = 30°C ±1°C) at IZT = 20 mA. This specification ensures consistent voltage reference performance across production lots and operating temperatures.
Is SZMMSZ5236BT1G qualified for automotive applications?
Yes, SZMMSZ5236BT1G is AEC−Q101 qualified and PPAP capable, making it suitable for automotive applications such as engine control units, body electronics, and ADAS power monitoring systems. The "SZ" prefix explicitly denotes compliance with automotive site and process control requirements, distinguishing it from the commercial-grade MMSZ5236BT1G variant.
What is the maximum power dissipation and thermal derating behavior of SZMMSZ5236BT1G?
SZMMSZ5236BT1G is rated for 500 mW total power dissipation on FR−5 board at lead temperature (TL) = 75°C, with linear derating of 6.7 mW/°C above that temperature. Its junction-to-ambient thermal resistance is 340°C/W, and junction-to-lead resistance is 150°C/W-critical parameters for thermal design in enclosed or high-ambient-temperature environments.
How does the thermal equilibrium specification affect voltage accuracy in SZMMSZ5236BT1G?
The Zener voltage of SZMMSZ5236BT1G is specified under thermal equilibrium (TL = 30°C ±1°C), meaning measurements are taken only after device self-heating has stabilized. This eliminates transient thermal errors and guarantees repeatable, production-ready voltage reference accuracy-unlike non-equilibrium specs that may vary significantly with pulse duration or ambient conditions.
What packaging and marking details apply to SZMMSZ5236BT1G?
SZMMSZ5236BT1G uses the SOD−123 package (Case 425, Style 1), measuring 1.60 × 2.69 × 1.16 mm, with cathode identified by a polarity band. It ships in Pb−free tape-and-reel format (3,000 units per reel), marked "F1" per onsemi's device coding system, and complies with UL 94 V−0 flammability standards.
SZMMSZ5236BT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- SZMMSZ52xxxT1G
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
SZMMSZ5236BT1G FAQ
1.How can I place an order for SZMMSZ5236BT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMMSZ5236BT1G 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 SZMMSZ5236BT1G reliable?
The price and inventory of SZMMSZ5236BT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMMSZ5236BT1G is usually 5 days.
3.What payment methods are accepted for SZMMSZ5236BT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMMSZ5236BT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMMSZ5236BT1G?
SZMMSZ5236BT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMMSZ5236BT1G 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 SZMMSZ5236BT1G?
For technical support, including SZMMSZ5236BT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMMSZ5236BT1G requirements.
6.How does Aetrix verify that SZMMSZ5236BT1G is sourced from the original manufacturer or authorized distributors?
All SZMMSZ5236BT1G 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 SZMMSZ5236BT1G meets industry standards.
7.What is the process for return or replacement of SZMMSZ5236BT1G?
All SZMMSZ5236BT1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMMSZ5236BT1G, 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 SZMMSZ5236BT1G part is unused and in its original packaging.
Return procedure for SZMMSZ5236BT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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