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onsemi SZMMSZ2V7ET1G
- Part No.:
- SZMMSZ2V7ET1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
SZMMSZ2V7ET1G.pdf
- Description:
- DIODE ZENER 2.7V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
SZMMSZ2V7ET1G from onsemi is a 2.7 V ±5% Zener voltage regulator diode in SOD-123 package, rated for 500 mW power dissipation at 75 °C on FR-5 board, with 100 Ω dynamic impedance at 5 mA test current and 20 µA reverse leakage at 1.9 V, used for precision low-voltage reference and overvoltage protection in automotive sensor interfaces.
For engineers reviewing the SZMMSZ2V7ET1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance, thermal derating behavior, HBM ESD rating (>16 kV), and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
This device operates as a two-terminal shunt regulator with fixed reverse breakdown at nominal 2.7 V, specified under 5 mA Zener test current (IZT1) and 1 mA (IZT2) for dual-voltage grading. Its temperature coefficient is negative below 5 V, typical for low-voltage Zeners, and it exhibits 600 Ω maximum impedance at 1 mA test condition.
The SOD-123 package enables automated placement with cathode band polarity marking, supports 260 °C soldering for 10 seconds, and delivers 225 W non-repetitive surge capability per 8 × 20 µs pulse per IEC 61000-4-5. It is Pb-free and AEC-Q101 qualified for automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.57 V min / 2.7 V nom / 2.84 V max at IZT = 5 mA - defines stable regulation window for low-noise 2.7 V reference generation |
| Zener Impedance (ZZT) | 100 Ω max at IZT = 5 mA - limits output voltage variation under load transients in feedback paths |
| Reverse Leakage (IR) | 20 µA max at VR = 1.9 V - ensures minimal quiescent current draw in always-on bias networks |
| Power Dissipation (PD) | 500 mW at TL = 75 °C on FR-5 board - sets maximum continuous power handling before thermal derating begins |
| ESD Rating | Class 3 (>16 kV) per HBM - provides robustness against handling-induced electrostatic discharge in assembly environments |
| AEC-Q101 Qualified | Yes - confirms suitability for automotive electronics including engine control modules and body electronics |
| Junction Temp Range | −55 °C to +150 °C - enables operation in under-hood and industrial ambient conditions without derating |
Pinout & Package
SOD-123 surface-mount plastic package (Case 425, 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 breakdown terminal | Connected to regulated voltage node; reverse-biased during regulation; carries full Zener current |
| 2 (Anode) | Reference ground terminal | Typically tied to system ground or low-side reference; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| Automated assembly optimized | SOD-123 footprint compatible with standard pick-and-place equipment and reflow profiles |
| High-density packaging | 1.60 mm width enables placement in space-constrained PCB layouts such as automotive ECUs |
| Stable low-voltage reference | ±5% tolerance at 2.7 V with predictable negative tempco supports accurate analog sensing |
| Robust surge immunity | 225 W peak power rating (8 × 20 µs) protects downstream circuitry from transient overvoltage events |
| Pb-free and RoHS compliant | Meets global environmental compliance requirements without lead-based solder compatibility compromises |
Applications
| Automotive Sensor Biasing | Industrial Analog Input Protection |
|---|---|
Use Scenario: Providing stable 2.7 V bias to Hall-effect or pressure sensor ICs in engine control units. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise excitation voltage for ratiometric sensor outputs. Use Value: Maintains sensor accuracy across −40 °C to +125 °C ambient with <±5% voltage drift and minimal self-heating error. |
Use Scenario: Clamping input pins of ADC front-ends exposed to field wiring in PLC analog modules. IC Role / Device Role / Timing Role: Overvoltage protector limiting transient energy before signal conditioning amplifiers. Use Value: Absorbs 225 W surge pulses without failure, preventing latch-up or damage to 16-bit SAR ADC inputs. |
| Low-Power IoT Reference | USB-C Port Voltage Clamp |
Use Scenario: Generating ultra-low-power 2.7 V reference for battery-operated environmental sensors. IC Role / Device Role / Timing Role: Low-quiescent shunt regulator enabling microamp-level standby operation. Use Value: Draws only 20 µA leakage at 1.9 V, extending coin-cell life beyond 5 years in sleep-mode dominant designs. |
Use Scenario: Protecting USB-C CC line receivers from ESD and hot-swap transients. IC Role / Device Role / Timing Role: Fast-response clamp limiting CC pin voltage to safe levels during plug insertion. Use Value: Responds within nanoseconds to 15 kV HBM events while maintaining <2.84 V clamping threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ2V7ET1G | No SZ prefix; not AEC-Q101 qualified; same electrical specs and SOD-123 package | Intended for commercial/industrial use only; lacks automotive qualification documentation | Select when AEC-Q101 is not required and cost sensitivity outweighs automotive traceability needs |
| BZX84-C2V7 | Higher ZZT (120 Ω max), wider tolerance (±6%), SOT-23 package (larger footprint) | Lower surge rating (200 W), no AEC-Q101 certification, less suitable for high-reliability automotive nodes | Choose for legacy SOT-23 board reuse where 2.7 V regulation suffices but automotive qualification is unnecessary |
Compared with MMSZ2V7ET1G and BZX84-C2V7, SZMMSZ2V7ET1G uniquely combines AEC-Q101 qualification, 100 Ω ZZT, and SOD-123 miniaturization-making it the only option for new automotive designs requiring both space efficiency and certified reliability.
Availability
SZMMSZ2V7ET1G is available at Aetrix Electronics and suitable for automotive sensor modules, industrial analog input protection circuits, and low-power IoT reference designs requiring stable component supply with full AEC-Q101 traceability and Pb-free compliance.
Supply support for SZMMSZ2V7ET1G 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 silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
SZMMSZxxxET1G belongs to onsemi's AEC-Q101-qualified Zener regulator family designed specifically for automotive subsystems requiring robust, miniature, and thermally stable voltage references.
FAQ
What is the Zener voltage tolerance of SZMMSZ2V7ET1G?
The SZMMSZ2V7ET1G has a nominal Zener voltage of 2.7 V with a standard tolerance of ±5%, meaning the actual measured voltage falls between 2.57 V and 2.84 V when tested at IZT = 5 mA and TA = 25 °C. This tight tolerance ensures consistent performance in precision biasing applications where reference stability is critical, such as in automotive sensor excitation circuits using the SZMMSZ2V7ET1G.
Is SZMMSZ2V7ET1G suitable for automotive applications?
Yes, SZMMSZ2V7ET1G is AEC-Q101 qualified and PPAP capable, making it suitable for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. The SZ prefix explicitly denotes compliance with automotive-specific site and process controls, and its −55 °C to +150 °C junction temperature range supports under-hood deployment. All qualification data for SZMMSZ2V7ET1G is documented in onsemi's official AEC-Q101 report.
What is the maximum power dissipation for SZMMSZ2V7ET1G?
SZMMSZ2V7ET1G 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 thermal resistance junction-to-ambient is 340 °C/W, meaning self-heating must be managed in enclosed or high-ambient environments. This power rating directly determines usable current headroom in shunt regulation designs using SZMMSZ2V7ET1G.
Does SZMMSZ2V7ET1G have ESD protection?
Yes, SZMMSZ2V7ET1G features an ESD rating of Class 3 (>16 kV) per the Human Body Model (HBM), verified per JESD22-A114. This level of protection allows safe handling during automated assembly and improves system-level robustness against electrostatic discharge in end-user environments. The ESD performance is intrinsic to the device structure and does not require external components-critical for compact designs relying on SZMMSZ2V7ET1G as a primary clamp.
What package type does SZMMSZ2V7ET1G use?
SZMMSZ2V7ET1G uses the SOD-123 surface-mount package (Case 425), measuring 1.60 × 2.69 × 1.16 mm, with cathode identified by a polarity band. This package supports high-density PCB layouts and is optimized for automated board assembly, including standard reflow profiles. The mechanical drawing and soldering specifications for SZMMSZ2V7ET1G are fully documented in onsemi's CASE 425 outline.
SZMMSZ2V7ET1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 20 µA @ 1 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
SZMMSZ2V7ET1G FAQ
1.How can I place an order for SZMMSZ2V7ET1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMMSZ2V7ET1G 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 SZMMSZ2V7ET1G reliable?
The price and inventory of SZMMSZ2V7ET1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMMSZ2V7ET1G is usually 5 days.
3.What payment methods are accepted for SZMMSZ2V7ET1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMMSZ2V7ET1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMMSZ2V7ET1G?
SZMMSZ2V7ET1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMMSZ2V7ET1G 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 SZMMSZ2V7ET1G?
For technical support, including SZMMSZ2V7ET1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMMSZ2V7ET1G requirements.
6.How does Aetrix verify that SZMMSZ2V7ET1G is sourced from the original manufacturer or authorized distributors?
All SZMMSZ2V7ET1G 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 SZMMSZ2V7ET1G meets industry standards.
7.What is the process for return or replacement of SZMMSZ2V7ET1G?
All SZMMSZ2V7ET1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMMSZ2V7ET1G, 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 SZMMSZ2V7ET1G part is unused and in its original packaging.
Return procedure for SZMMSZ2V7ET1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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