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onsemi SZMMSZ10T3G
- Part No.:
- SZMMSZ10T3G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
SZMMSZ10T3G.pdf
- Description:
- DIODE ZENER 10V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:20,132
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Product details
Overview
SZMMSZ10T3G from onsemi is a 10 V ±5% Zener voltage regulator diode in SOD−123 package, rated for 500 mW power dissipation at 75°C, with 20 Ω maximum dynamic impedance at 5 mA test current and 0.2 μA max reverse leakage at 7.6 V, used for precision voltage reference and overvoltage protection in automotive power rails.
For engineers reviewing the SZMMSZ10T3G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal derating behavior, AEC−Q101 qualification status, and direct alternatives for board-level voltage stabilization design.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable 10 V output across load variations by conducting reverse current above its Zener breakdown threshold. It exhibits a temperature coefficient of +6.7 mV/°C near 10 V, enabling predictable drift compensation in temperature-sensitive circuits.
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 cathode-anode polarity is marked by a band, and it achieves Class 3 ESD robustness (>16 kV HBM), meeting automotive reliability requirements per AEC−Q101.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.50–10.50 V at IZT = 5 mA; defines stable regulation point for feedback loops or reference generation |
| Power Dissipation (PD) | 500 mW on FR−5 board at TL = 75°C; derates linearly at 6.7 mW/°C above 75°C |
| Zener Impedance (ZZT) | ≤20 Ω at IZT = 5 mA; ensures minimal output voltage variation under dynamic load changes |
| Reverse Leakage (IR) | ≤0.2 μA at VR = 7.6 V; guarantees low standby current in battery-powered systems |
| Junction Temp Range | −55°C to +150°C; enables operation in under-hood automotive environments |
| ESD Rating | Class 3 (>16 kV) per HBM; protects against handling-induced electrostatic discharge during assembly |
| AEC−Q101 Qualified | Yes; validated for automotive electronics applications requiring PPAP documentation support |
Pinout & Package
SOD−123 surface-mount plastic package (1.60 × 2.69 × 1.16 mm), void-free thermosetting case with corrosion-resistant finish; cathode identified by polarity band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-biased terminal where Zener breakdown occurs |
| 2 (Unbanded End) | Anode | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Automotive-grade qualification | AEC−Q101 qualified and PPAP capable - supports Tier-1 automotive BOMs with full traceability |
| Pb−Free packaging | SZ prefix indicates automotive-specific control change and RoHS-compliant Pb−free construction |
| High-density mounting | SOD−123 footprint (1.60 × 2.69 mm) enables compact layout in space-constrained modules |
| Thermal stability | 340°C/W junction-to-ambient thermal resistance allows reliable operation without heatsinking below 75°C ambient |
| ESD-hardened design | Class 3 HBM rating (>16 kV) eliminates need for external ESD protection in most board-level implementations |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Stabilizing 10 V reference for microcontroller ADC inputs monitoring battery voltage and cabin sensors. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise, temperature-compensated bias for analog front-end circuitry. Use Value: Maintains <±1% regulation accuracy across −40°C to +125°C ambient, ensuring consistent sensor readings despite engine bay thermal cycling. | Use Scenario: Clamping transient overvoltage on 12 V supply rail feeding analog transducers in factory automation equipment. IC Role / Device Role / Timing Role: Overvoltage protection element limiting rail excursions to safe levels during EFT or load dump events. Use Value: Absorbs surge energy up to 100 W peak (1 ms pulse) while holding rail below 10.5 V, preventing downstream IC latch-up. |
| Consumer Power Adapter Feedback Loop | Medical Diagnostic Equipment Reference |
Use Scenario: Providing secondary-side voltage reference for optocoupler-based feedback in isolated AC/DC adapters. IC Role / Device Role / Timing Role: Precision Zener reference setting output voltage via TL431-compatible feedback network. Use Value: Delivers 10 V ±5% tolerance with 20 Ω dynamic impedance, enabling <±2% output regulation across line/load variations. | Use Scenario: Generating stable 10 V reference for high-resolution DACs in portable ultrasound imaging front-ends. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage reference source for analog signal chain calibration. Use Value: 0.2 μA leakage at 7.6 V minimizes current error in high-impedance reference dividers, preserving 16-bit DAC accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ10T3G | No SZ prefix; commercial grade, not AEC−Q101 qualified; identical electrical specs and SOD−123 package | Not approved for automotive production; suitable for industrial or consumer designs without PPAP requirements | Select when automotive qualification is unnecessary and cost sensitivity favors standard-grade variant |
| BZX584C10 | 10 V ±5%, 500 mW, SOD−323 package; higher ZZT (40 Ω); no AEC−Q101 rating | Smaller footprint but higher dynamic impedance reduces regulation fidelity under fast load transients | Choose only if board area is critical and transient response is non-critical; verify thermal margin due to smaller package |
Compared with MMSZ10T3G and BZX584C10, SZMMSZ10T3G uniquely combines AEC−Q101 qualification, 20 Ω ZZT, and SOD−123 manufacturability-making it the sole choice for automotive voltage references requiring both reliability and regulation precision.
Availability
SZMMSZ10T3G is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, and medical diagnostic equipment requiring stable component supply with full lifecycle traceability.
Supply support for SZMMSZ10T3G 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 supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
SZMMSZ10T3G belongs to the SZMMSZxxxT1G/Z3G series of AEC−Q101-qualified Zener regulators designed specifically for automotive voltage reference and protection functions in harsh-environment ECUs.
FAQ
What is the Zener voltage tolerance for SZMMSZ10T3G?
The SZMMSZ10T3G has a nominal Zener voltage of 10 V with a standard tolerance of ±5%, meaning the actual measured VZ 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 and applies to all units in production lots.
Is SZMMSZ10T3G suitable for automotive applications?
Yes, SZMMSZ10T3G is AEC−Q101 qualified and PPAP capable, with the "SZ" prefix indicating automotive-specific site and process controls. It operates reliably from −55°C to +150°C and meets stringent ESD (Class 3 HBM) and thermal cycling requirements defined for automotive electronics.
What is the maximum reverse leakage current for SZMMSZ10T3G?
The maximum reverse leakage current for SZMMSZ10T3G is 0.2 μA at VR = 7.6 V and TA = 25°C. This ultra-low leakage ensures minimal power loss in battery-backed systems and preserves accuracy in high-impedance reference networks where current errors directly impact voltage stability.
How does the thermal derating of SZMMSZ10T3G work above 75°C?
SZMMSZ10T3G's power dissipation is rated at 500 mW up to 75°C on FR−5 board, then derates linearly at 6.7 mW/°C. At 100°C ambient, maximum allowable power drops to 332.5 mW. This derating reflects junction-to-ambient thermal resistance (340°C/W) and must be applied in thermal design calculations for sustained operation.
What package type and dimensions does SZMMSZ10T3G use?
SZMMSZ10T3G 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 band marking, Pb−free construction, and is optimized for automated pick-and-place and reflow soldering with peak temperature tolerance up to 260°C for 10 seconds.
SZMMSZ10T3G 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
SZMMSZ10T3G FAQ
1.How can I place an order for SZMMSZ10T3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMMSZ10T3G 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 SZMMSZ10T3G reliable?
The price and inventory of SZMMSZ10T3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMMSZ10T3G is usually 5 days.
3.What payment methods are accepted for SZMMSZ10T3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMMSZ10T3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMMSZ10T3G?
SZMMSZ10T3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMMSZ10T3G 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 SZMMSZ10T3G?
For technical support, including SZMMSZ10T3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMMSZ10T3G requirements.
6.How does Aetrix verify that SZMMSZ10T3G is sourced from the original manufacturer or authorized distributors?
All SZMMSZ10T3G 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 SZMMSZ10T3G meets industry standards.
7.What is the process for return or replacement of SZMMSZ10T3G?
All SZMMSZ10T3G units undergo pre-shipment inspection (PSI). If there is an issue with SZMMSZ10T3G, 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 SZMMSZ10T3G part is unused and in its original packaging.
Return procedure for SZMMSZ10T3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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