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onsemi SZMMSZ10T1
- Part No.:
- SZMMSZ10T1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
SZMMSZ10T1.pdf
- Description:
- DIODE ZENER 10V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:8,060
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Product details
Overview
SZMMSZ10T1 from onsemi is a 10 V, ±5% tolerance Zener diode in SOD−123 package, rated for 500 mW power dissipation at 75°C ambient, with 20 Ω dynamic impedance at 5 mA test current and 0.2 μA reverse leakage at 7.6 V. It serves as a precision voltage reference or overvoltage clamp in low-power DC rails, such as automotive sensor supply regulation.
For engineers reviewing the SZMMSZ10T1 datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC−Q101 qualification, 16 kV HBM ESD rating, tight 10 V nominal Zener voltage tolerance, and thermal derating behavior above 75°C.
Technical Context
This device operates in reverse breakdown mode to maintain stable voltage across load variations, with Zener voltage measured under 1 ms pulse conditions per JEDEC standards. Its junction-to-ambient thermal resistance is 340°C/W, limiting continuous power handling in still-air environments.
The SOD−123 package supports automated placement and reflow soldering up to 260°C for 10 seconds, and polarity is marked by a cathode band. Temperature coefficient near 10 V is approximately +5.5 mV/°C, enabling predictable drift compensation in temperature-sensitive circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.50–10.50 V at IZT = 5 mA; defines clamping threshold with ±5% initial accuracy |
| Dynamic Impedance (ZZT) | 20 Ω max at IZT = 5 mA; determines voltage regulation stiffness under load transients |
| Reverse Leakage (IR) | 0.2 μA max at VR = 7.6 V; ensures minimal quiescent current in standby circuits |
| Power Dissipation (PD) | 500 mW on FR−5 board at TL = 75°C; sets maximum steady-state energy handling before thermal shutdown |
| Junction Temp Range | −55°C to +150°C; enables operation in under-hood automotive and industrial control environments |
| ESD Rating | Class 3 (>16 kV) per HBM; protects against electrostatic discharge during handling and assembly |
Pinout & Package
Package: SOD−123 (Case 425), surface-mount, 2-lead plastic package measuring 1.60 × 2.69 × 1.16 mm, cathode identified by band marking.
| 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 lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC−Q101 Qualified | Validated for automotive applications including engine control modules and body electronics |
| Pb−Free Construction | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 reflow profiles |
| High-Density Packaging | Small footprint (1.60 × 2.69 mm) enables use in space-constrained PCB layouts |
| Optimized for Automated Assembly | Transfer-molded case geometry ensures reliable pick-and-place and solder joint formation |
Applications
| Automotive Sensor Reference | Industrial Power Monitor |
|---|---|
Use Scenario: Providing stable 10 V reference for analog signal conditioning in ABS wheel speed sensors. IC Role / Device Role / Timing Role: Zener voltage reference diode establishing precise bias point for op-amp input stages. Use Value: Maintains <±1% output stability over −40°C to +125°C ambient due to AEC−Q101 validation and known TC behavior. | Use Scenario: Clamping overvoltage on 12 V auxiliary rail in programmable logic controller (PLC) I/O modules. IC Role / Device Role / Timing Role: Overvoltage protection device shunting transient energy to ground during load dump events. Use Value: Limits rail excursion to ≤10.5 V with 20 Ω dynamic impedance, preventing damage to downstream 3.3 V logic interfaces. |
| Consumer USB-C PD Adapter | Medical Diagnostic Instrument |
Use Scenario: Regulating feedback voltage in secondary-side sensing circuit of 20 W USB-C power adapter. IC Role / Device Role / Timing Role: Precision voltage reference element in TL431-based optocoupler feedback loop. Use Value: Delivers 10 V reference with 0.2 μA leakage, minimizing error contribution to overall ±2% output tolerance. | Use Scenario: Stabilizing bias voltage for photodiode amplifier in portable blood oximeter front-end. IC Role / Device Role / Timing Role: Low-noise voltage reference source for analog front-end gain stage calibration. Use Value: Enables <10 ppm/°C drift tracking via documented +5.5 mV/°C TC, supporting clinical-grade measurement repeatability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ10T1G | No SZ prefix; commercial grade, not AEC−Q101 qualified; identical electrical specs and SOD−123 package | Not suitable for automotive production; acceptable for industrial prototypes and consumer designs | Select MMSZ10T1G when AEC−Q101 compliance is unnecessary and cost sensitivity is high |
| BZX84-C10 | SOT−23 package; 500 mW rating; ±5% tolerance; 20 Ω ZZT; but only qualified to AEC−Q200, not Q101 | Higher mounting height and different land pattern; requires PCB redesign | Choose BZX84-C10 only if SOT−23 footprint is already standardized and automotive qualification is not required |
Compared with MMSZ10T1G and BZX84-C10, SZMMSZ10T1 provides guaranteed AEC−Q101 qualification and automotive traceability without sacrificing electrical performance-making it the sole option for Tier 1 automotive supply chain compliance.
Availability
SZMMSZ10T1 is available at Aetrix Electronics and suitable for automotive sensor systems, industrial power monitors, and medical diagnostic instruments requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SZMMSZ10T1 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.
The MMSZ/SZMMSZ series targets cost-sensitive, high-reliability voltage regulation in automotive, industrial, and medical applications-designed specifically for robustness in harsh environments and compatibility with automated manufacturing.
FAQ
What is the Zener voltage tolerance of SZMMSZ10T1?
The SZMMSZ10T1 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 at IZT = 5 mA and TA = 25°C. This tolerance is verified per JEDEC test conditions using 1 ms pulse width, ensuring consistency across production lots.
Is SZMMSZ10T1 suitable for automotive applications?
Yes, SZMMSZ10T1 is AEC−Q101 qualified and PPAP capable, making it suitable for automotive applications including engine control units, body electronics, and ADAS sensor modules. The "SZ" prefix explicitly denotes automotive-grade process control and site-specific change management per customer requirements.
What is the maximum reverse leakage current for SZMMSZ10T1?
The maximum reverse leakage current for SZMMSZ10T1 is 0.2 μA at VR = 7.6 V and TA = 25°C. This low leakage ensures minimal power loss in battery-powered or always-on circuits, and remains stable across the full −55°C to +150°C operating junction temperature range.
Can SZMMSZ10T1 be used in place of MMSZ10T1G?
SZMMSZ10T1 can functionally replace MMSZ10T1G in most circuits, as both share identical electrical specifications, SOD−123 packaging, and Pb−free construction. However, SZMMSZ10T1 adds AEC−Q101 qualification and automotive traceability-so substitution should only occur when those requirements are needed.
What is the thermal resistance of SZMMSZ10T1?
The thermal resistance, junction-to-ambient (RJA), for SZMMSZ10T1 is 340°C/W when mounted on an FR−5 board. This value governs how much the junction temperature rises above ambient per milliwatt of dissipated power, directly impacting safe continuous power handling-especially above 75°C board temperature.
SZMMSZ10T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Bulk
- 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 @ 20 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
SZMMSZ10T1 FAQ
1.How can I place an order for SZMMSZ10T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMMSZ10T1 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 SZMMSZ10T1 reliable?
The price and inventory of SZMMSZ10T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMMSZ10T1 is usually 5 days.
3.What payment methods are accepted for SZMMSZ10T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMMSZ10T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMMSZ10T1?
SZMMSZ10T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMMSZ10T1 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 SZMMSZ10T1?
For technical support, including SZMMSZ10T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMMSZ10T1 requirements.
6.How does Aetrix verify that SZMMSZ10T1 is sourced from the original manufacturer or authorized distributors?
All SZMMSZ10T1 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 SZMMSZ10T1 meets industry standards.
7.What is the process for return or replacement of SZMMSZ10T1?
All SZMMSZ10T1 units undergo pre-shipment inspection (PSI). If there is an issue with SZMMSZ10T1, 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 SZMMSZ10T1 part is unused and in its original packaging.
Return procedure for SZMMSZ10T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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