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onsemi SZMMSZ10T1G
- Part No.:
- SZMMSZ10T1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
SZMMSZ10T1G.pdf
- Description:
- DIODE ZENER 10V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:7,964
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Product details
Overview
SZMMSZ10T1G from onsemi is a 10 V ±5% Zener voltage regulator diode in SOD−123 package, rated for 500 mW power dissipation at 75°C ambient, with 20 Ω maximum dynamic impedance at 5 mA test current and 0.2 μA reverse leakage at 7.6 V, used for precision voltage reference and overvoltage protection in automotive power management circuits.
For engineers reviewing the SZMMSZ10T1G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, AEC−Q101 qualification status, and direct alternatives for voltage regulation design-in.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable output voltage across load variations by conducting reverse current above its specified Zener breakdown threshold. It exhibits a positive temperature coefficient near 10 V (≈+5.4 mV/°C), enabling predictable drift compensation in bias networks.
Designed for surface-mount assembly on FR−4/FR−5 PCBs, it supports automated placement and reflow soldering up to 260°C for 10 seconds. Its 150°C/W junction-to-lead thermal resistance enables effective heat transfer to copper traces under continuous DC operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.50–10.50 V at IZT = 5 mA; defines regulated output range under nominal bias conditions |
| Power Dissipation (PD) | 500 mW at TL = 75°C; derates linearly at 6.7 mW/°C above 75°C ambient |
| Zener Impedance (ZZT) | ≤20 Ω at IZT = 5 mA, f = 1 kHz; determines AC regulation stability under varying load ripple |
| Reverse Leakage (IR) | ≤0.2 μA at VR = 7.6 V; ensures minimal quiescent current in standby voltage-sense paths |
| Junction Temp Range | −55°C to +150°C; validated for under-hood automotive environments per AEC−Q101 |
| ESD Rating | Class 3 (>16 kV HBM); eliminates need for external ESD protection in board-level interfaces |
Pinout & Package
SOD−123 surface-mount plastic package (1.60 × 2.69 × 1.16 mm), void-free thermosetting case with cathode polarity band marking; optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 (Non-banded End) | Anode | Connected to ground or low-impedance return path; completes shunt regulation loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC−Q101 Qualified | Validated for automotive applications including engine control units and body electronics |
| Pb−Free Construction | RoHS-compliant SOD−123 package with corrosion-resistant, solderable finish |
| High ESD Robustness | Class 3 Human Body Model (>16 kV) eliminates need for discrete TVS in many sensor interface designs |
| Thermal Performance | 150°C/W junction-to-lead thermal resistance enables reliable operation on 1 oz. copper PCBs |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 10 V reference for analog-to-digital converter (ADC) biasing in engine knock detection circuitry. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise input scaling for microcontroller ADC channels. Use Value: Maintains <±0.5% reference accuracy across −40°C to +125°C operating range, ensuring consistent knock threshold detection. | Use Scenario: Clamping transient overvoltage on 4–20 mA current-loop transmitters during ESD events. IC Role / Device Role / Timing Role: Bidirectional transient suppressor protecting op-amp inputs from >16 kV HBM discharges. Use Value: Limits input voltage to ≤10.5 V while drawing <0.2 μA leakage at 7.6 V, preserving loop accuracy. |
| Consumer Power Adapter Feedback | Medical Diagnostic Equipment Biasing |
Use Scenario: Regulating optocoupler LED drive voltage in isolated flyback feedback networks. IC Role / Device Role / Timing Role: Precision shunt regulator setting secondary-side error amplifier reference point. Use Value: Enables ±5% output voltage tolerance compliance with IEC 60950-1 safety standards. | Use Scenario: Generating stable bias for photodiode transimpedance amplifiers in pulse oximetry front-ends. IC Role / Device Role / Timing Role: Low-noise voltage reference minimizing dark-current measurement drift. Use Value: Delivers <20 Ω dynamic impedance at 5 mA, reducing signal-dependent gain variation below 0.1%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C10LT1G | Same 10 V ±5% rating but SOT-23 package; higher ZZT (30 Ω vs. 20 Ω) and lower PD (300 mW) | Less suitable for high-stability references requiring low dynamic impedance; preferred where board space allows larger footprint | Select when SOT-23 compatibility is required and thermal margin exceeds 300 mW needs |
| MMSZ10ET1G | Identical SOD−123 package and electrical specs but lacks AEC−Q101 qualification and SZ-prefix traceability | Not approved for automotive production; acceptable for industrial or consumer use where qualification is not mandated | Select for cost-sensitive non-automotive designs needing identical performance without automotive documentation |
Compared with BZX84-C10LT1G and MMSZ10ET1G, SZMMSZ10T1G provides superior thermal performance (500 mW vs. 300 mW), tighter dynamic impedance (20 Ω vs. 30 Ω), and full AEC−Q101 validation-making it the only option qualified for under-hood automotive deployment.
Availability
SZMMSZ10T1G is available at Aetrix Electronics and suitable for automotive engine control units, industrial sensor signal conditioning, and medical diagnostic equipment requiring stable component supply with full AEC−Q101 traceability and Pb−free compliance.
Supply support for SZMMSZ10T1G 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.
SZMMSZ10T1G belongs to the AEC−Q101-qualified SZMMSZxxxT1G Zener regulator family, engineered specifically for automotive-grade voltage reference and overvoltage protection in harsh-environment electronic control modules.
FAQ
What is the Zener voltage tolerance of SZMMSZ10T1G?
The SZMMSZ10T1G has a nominal Zener voltage of 10 V with a standard tolerance of ±5%, meaning its actual breakdown voltage falls between 9.50 V and 10.50 V when tested at IZT = 5 mA and TA = 25°C. This tolerance is guaranteed across the full operating temperature range of −55°C to +150°C, as confirmed in the onsemi datasheet revision 13.
Is SZMMSZ10T1G suitable for automotive applications?
Yes, SZMMSZ10T1G is AEC−Q101 qualified and PPAP capable, with full traceability enabled by the "SZ" prefix. It meets automotive reliability requirements including temperature cycling, humidity testing, and mechanical shock, making it suitable for engine control units, body electronics, and ADAS subsystems where certified components are mandatory.
What is the maximum reverse leakage current for SZMMSZ10T1G?
The maximum reverse leakage current for SZMMSZ10T1G is 0.2 μA at VR = 7.6 V and TA = 25°C. This low leakage ensures minimal power loss in battery-powered or low-quiescent-current applications such as sensor biasing and voltage monitoring circuits where standby current must remain sub-microamp.
How does the thermal derating of SZMMSZ10T1G work above 75°C?
SZMMSZ10T1G is rated for 500 mW power dissipation at TL = 75°C. Above that temperature, its power capability decreases linearly at 6.7 mW/°C, reaching zero dissipation at approximately 148°C. This derating curve is defined in the Maximum Ratings table and applies to FR−5 board conditions, supporting accurate thermal design in enclosed automotive enclosures.
What package type and dimensions does SZMMSZ10T1G use?
SZMMSZ10T1G uses the SOD−123 surface-mount package (Case 425, Style 1), measuring 1.60 mm × 2.69 mm × 1.16 mm. It features a cathode polarity band, Pb−free construction, and UL 94 V−0 flammability rating-optimized for high-density PCB layouts and automated reflow assembly with peak temperatures up to 260°C for 10 seconds.
SZMMSZ10T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 10 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 7 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
SZMMSZ10T1G FAQ
1.How can I place an order for SZMMSZ10T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMMSZ10T1G 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 SZMMSZ10T1G reliable?
The price and inventory of SZMMSZ10T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMMSZ10T1G is usually 5 days.
3.What payment methods are accepted for SZMMSZ10T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMMSZ10T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMMSZ10T1G?
SZMMSZ10T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMMSZ10T1G 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 SZMMSZ10T1G?
For technical support, including SZMMSZ10T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMMSZ10T1G requirements.
6.How does Aetrix verify that SZMMSZ10T1G is sourced from the original manufacturer or authorized distributors?
All SZMMSZ10T1G 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 SZMMSZ10T1G meets industry standards.
7.What is the process for return or replacement of SZMMSZ10T1G?
All SZMMSZ10T1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMMSZ10T1G, 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 SZMMSZ10T1G part is unused and in its original packaging.
Return procedure for SZMMSZ10T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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