My Inquiry
My Account
onsemi MMSZ10ET1
- Part No.:
- MMSZ10ET1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ10ET1.pdf
- Description:
- DIODE ZENER 10V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,918
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMSZ10ET1 from onsemi is a 10 V, ±5% tolerance Zener diode in SOD-123 package, rated for 500 mW power dissipation at 75 °C on FR-5 board, with 20 Ω dynamic impedance at 5 mA test current and 0.2 µA reverse leakage at 7.6 V, used for precision voltage regulation and overvoltage protection in low-power analog circuits.
For engineers reviewing the MMSZ10ET1 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, cathode/anode polarity mapping, automotive-grade AEC-Q101 qualification status, and direct alternatives with documented Zener voltage and impedance differences.
Technical Context
This device operates as a two-terminal voltage reference by maintaining a stable reverse breakdown voltage across its terminals under controlled Zener current. It exhibits a nominal temperature coefficient of +4.5 mV/°C near 10 V, enabling predictable drift compensation in temperature-sensitive designs.
The MMSZ10ET1 supports pulsed operation up to 225 W (8 × 20 µs waveform) and meets Class 3 ESD immunity (>16 kV HBM), making it suitable for transient-prone industrial sensor interfaces and automotive body electronics where robustness and compact size are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.5–10.5 V at IZT = 5 mA; ensures ±5% regulation accuracy for 10 V reference rails |
| Dynamic Impedance (ZZT) | 20 Ω max at IZT = 5 mA; limits output voltage variation under load current changes |
| Reverse Leakage (IR) | 0.2 µA max at VR = 7.6 V; minimizes quiescent current in battery-powered standby circuits |
| Power Dissipation (PD) | 500 mW at TL = 75 °C on FR-5 board; defines continuous thermal limit for PCB layout planning |
| Junction Temp Range | −55 °C to +150 °C; supports operation in under-hood automotive and industrial control environments |
| ESD Rating | Class 3 (>16 kV HBM); eliminates need for external ESD protection in low-speed signal conditioning paths |
| AEC-Q101 Qualified | Validated for automotive applications per stress test requirements; enables use without requalification |
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, UL 94 V-0 flammability rating, and 260 °C maximum soldering temperature for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-biased terminal during Zener operation |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential rail; completes bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW Power Rating | Enables stable regulation in space-constrained 3.3 V/5 V supply monitoring without heatsinking |
| ±5% Zener Tolerance | Meets industrial-grade voltage reference accuracy without trimming or calibration circuitry |
| 225 W Surge Capability | Withstands IEC 61000-4-5 Level 3 surge events without degradation in protection circuits |
| AEC-Q101 Qualification | Reduces validation effort for automotive infotainment and body control module designs |
| Pb-Free SOD-123 Package | Supports RoHS-compliant automated assembly with standard reflow profiles |
Applications
| Power Supply Monitoring | Overvoltage Protection |
|---|---|
Use Scenario: Monitoring 12 V automotive battery rail for brown-out or overvoltage conditions in microcontroller-based modules. IC Role / Device Role / Timing Role: Zener diode provides clamped reference voltage to comparator input for threshold detection. Use Value: 10 V nominal breakdown enables precise 12 V system supervision with margin for ripple and transients. |
Use Scenario: Protecting ADC input of an industrial sensor interface from accidental 24 V miswiring. IC Role / Device Role / Timing Role: Acts as shunt clamp to divert excess current when input exceeds safe range. Use Value: 20 Ω ZZT ensures low-voltage clamping (<10.5 V) before downstream IC damage occurs. |
| Reference Voltage Source | Signal Level Translation |
Use Scenario: Generating stable 10 V reference for op-amp based precision current source in medical instrumentation. IC Role / Device Role / Timing Role: Provides fixed reverse-bias voltage to set feedback loop gain and offset. Use Value: ±5% tolerance and +4.5 mV/°C TC allow predictable error budgeting across −40 °C to +85 °C. |
Use Scenario: Biasing logic-level translators between 3.3 V and 5 V domains in embedded communication interfaces. IC Role / Device Role / Timing Role: Sets intermediate voltage threshold to enable bidirectional level shifting. Use Value: Low 0.2 µA leakage avoids loading high-impedance translator inputs while maintaining fast edge response. |
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-C10 | Same 10 V nominal Zener, but 350 mW rating and higher ZZT (30 Ω), SOT-23 package | Lower power handling and larger footprint than SOD-123; less suitable for high-density layouts | Select BZX84-C10 only if SOT-23 compatibility is required and thermal margin allows reduced PD |
| MMSZ10ET1G | Identical electrical specs and SOD-123 package; "G" suffix denotes Pb-free compliance per JESD97 | No functional difference; "G" version replaces legacy MMSZ10ET1 in new designs per RoHS mandates | MMSZ10ET1G is the recommended drop-in replacement for MMSZ10ET1 in all new production |
Compared with BZX84-C10, MMSZ10ET1 offers 43% higher power rating and tighter impedance for improved regulation stability; versus MMSZ10ET1G, it shares identical performance but lacks Pb-free marking-critical for export compliance and long-term supply continuity.
Availability
MMSZ10ET1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor signal conditioning, and portable medical device power monitoring requiring stable component supply and AEC-Q101 traceability.
Supply support for MMSZ10ET1 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 power and sensing solutions for automotive, industrial, cloud, and consumer applications.
The MMSZxxxET1G series targets cost-sensitive, high-volume Zener regulation needs in space-constrained surface-mount designs, emphasizing reliability, AEC-Q101 qualification, and Pb-free manufacturability.
FAQ
What is the Zener voltage tolerance of MMSZ10ET1?
The MMSZ10ET1 has a nominal Zener voltage of 10 V with a tolerance of ±5%, meaning the actual measured VZ falls between 9.5 V and 10.5 V when tested at IZT = 5 mA and TA = 25 °C. This tolerance is specified per onsemi's datasheet revision 8 and applies across the full operating temperature range.
Is MMSZ10ET1 qualified for automotive applications?
Yes, MMSZ10ET1 is AEC-Q101 qualified and PPAP capable, confirming its suitability for automotive electronic systems including body control modules, lighting drivers, and sensor interfaces. The qualification covers stress tests for temperature cycling, humidity, and mechanical shock per AEC standards.
What is the maximum power dissipation for MMSZ10ET1 on a standard PCB?
MMSZ10ET1 is rated for 500 mW total power dissipation on FR-5 board at lead temperature (TL) = 75 °C, derating linearly at 6.7 mW/°C above that point. Its thermal resistance junction-to-ambient is 340 °C/W, so ambient temperature must be limited to ensure junction temperature stays within −55 °C to +150 °C.
How does the dynamic impedance of MMSZ10ET1 affect voltage regulation?
The MMSZ10ET1 has a maximum dynamic impedance (ZZT) of 20 Ω at IZT = 5 mA. This value determines how much the output voltage varies with changes in Zener current-lower ZZT yields tighter regulation. For example, a 1 mA current shift causes ≤20 mV deviation in regulated voltage.
What is the reverse leakage current specification for MMSZ10ET1?
MMSZ10ET1 specifies a maximum reverse leakage current (IR) of 0.2 µA at VR = 7.6 V and TA = 25 °C. This low leakage ensures minimal parasitic current draw in battery-backed or ultra-low-power circuits where standby consumption must remain below 1 µA.
MMSZ10ET1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
MMSZ10ET1 FAQ
1.How can I place an order for MMSZ10ET1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ10ET1 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 MMSZ10ET1 reliable?
The price and inventory of MMSZ10ET1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ10ET1 is usually 5 days.
3.What payment methods are accepted for MMSZ10ET1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ10ET1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ10ET1?
MMSZ10ET1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ10ET1 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 MMSZ10ET1?
For technical support, including MMSZ10ET1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ10ET1 requirements.
6.How does Aetrix verify that MMSZ10ET1 is sourced from the original manufacturer or authorized distributors?
All MMSZ10ET1 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 MMSZ10ET1 meets industry standards.
7.What is the process for return or replacement of MMSZ10ET1?
All MMSZ10ET1 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ10ET1, 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 MMSZ10ET1 part is unused and in its original packaging.
Return procedure for MMSZ10ET1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMSZ10ET1 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
