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onsemi SZMM3Z2V7T1G
- Part No.:
- SZMM3Z2V7T1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SZMM3Z2V7T1G.pdf
- Description:
- DIODE ZENER 2.7V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:11,374
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Product details
Overview
SZMM3Z2V7T1G from onsemi is a 2.7 V ±0.2 V, 300 mW SOD−323 surface-mount Zener diode designed for precision low-voltage regulation and ESD protection in space-constrained portable electronics. It delivers 5 mA test current, <100 Ω dynamic impedance at IZT, and −3.5 mV/°C temperature coefficient, enabling stable reference voltage generation in battery-powered sensor nodes and USB interface clamping circuits.
For engineers reviewing the SZMM3Z2V7T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its 2.5–2.9 V nominal Zener range, 20 μA leakage at 1.0 V reverse bias, 450 pF capacitance at 0 V, AEC−Q101 qualification, and SOD−323 mechanical compatibility with high-density PCB layouts.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to clamp or regulate voltage at its specified Zener voltage. Its thermal resistance of 416 °C/W and 150 °C maximum junction temperature define safe power derating above 25 °C ambient.
The SOD−323 package features cathode-indicated polarity, Pb−free plating (Sn only), UL 94 V−0 flammability rating, and 260 °C soldering tolerance for 10 seconds. It supports Class 3 ESD robustness (>16 kV HBM), making it suitable for handheld and automotive interface protection where transient immunity is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.5 V min / 2.7 V nom / 2.9 V max @ IZT = 5 mA - defines tight regulation window for 2.7 V rail stabilization |
| Power Dissipation (PD) | 300 mW @ TA = 25 °C - sets maximum continuous DC or pulsed power handling on FR-4 board |
| Zener Impedance (ZZT) | ≤100 Ω @ IZT = 5 mA - ensures minimal voltage shift under load variation in reference circuits |
| Reverse Leakage (IR) | ≤20 μA @ VR = 1.0 V - guarantees low standby current in always-on voltage monitor paths |
| Capacitance (C) | 450 pF @ VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and signal integrity in RF-adjacent traces |
| Temp. Coefficient (αVZ) | −3.5 mV/°C - enables predictable drift compensation in temperature-sensitive analog front-ends |
| ESD Rating | Class 3 (>16 kV) per HBM - provides intrinsic I/O-level ESD protection without external TVS stacking |
Pinout & Package
SOD−323 surface-mount package: 1.7 mm × 1.25 mm body, 0.9 mm height, cathode marked by band. Weight: 4.507 mg/unit. Mounting position: any.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Breakdown Anode Connection | Connected to regulated output node; reverse-biased during Zener operation; polarity band identifies this terminal |
| 2 (Anode) | Reference Ground Reference | Tied to system ground or lower-potential rail; completes conduction path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC−Q101 Qualified | Validated for automotive applications including infotainment power rails and sensor supply conditioning |
| Pb−Free & RoHS Compliant | Sn-only termination meets global environmental compliance without compromising solder wetting or thermal cycling reliability |
| Low Profile (0.9 mm) | Enables placement beneath connectors or in stacked PCB assemblies where Z-height is constrained |
| UL 94 V−0 Rated | Self-extinguishing plastic housing reduces fire risk in enclosed consumer enclosures and medical peripherals |
| High ESD Robustness | Eliminates need for discrete HBM protection in USB 2.0 data lines and GPIOs of wearables |
Applications
| USB Interface Protection | Low-Voltage Sensor Reference |
|---|---|
Use Scenario: Clamping D+ and D− lines against ESD transients in portable USB peripherals. IC Role / Device Role / Timing Role: Two-terminal shunt regulator acting as bidirectional voltage limiter during ±8 kV contact discharge. Use Value: 450 pF capacitance avoids signal integrity degradation at 480 Mbps; 2.7 V breakdown prevents logic-level corruption in 3.3 V PHYs. |
Use Scenario: Providing stable bias voltage for analog temperature sensors in battery-operated IoT nodes. IC Role / Device Role / Timing Role: Precision Zener reference replacing higher-cost bandgap ICs in sub-1 μA quiescent current designs. Use Value: −3.5 mV/°C tempco allows predictable calibration offset; 20 μA leakage minimizes battery drain over 10-year deployments. |
| Automotive Body Control Module | High-Density Mobile PCB |
Use Scenario: Regulating 2.7 V supply for LIN transceiver bias in door module ECUs. IC Role / Device Role / Timing Role: AEC−Q101-qualified voltage clamp ensuring functional safety compliance under load dump conditions. Use Value: 300 mW power rating sustains 12 V surge clamping without thermal runaway; SOD−323 footprint saves >60% area vs. DO-35. |
Use Scenario: Space-saving voltage reference in multi-layer smartphone camera modules. IC Role / Device Role / Timing Role: Miniature shunt regulator stabilizing LDO feedback networks in image signal processors. Use Value: 1.7 mm × 1.25 mm outline fits between 0201 passives; 0.9 mm height avoids interference with flex cable connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B2V7,115 | 2.7 V ±5%, 300 mW, SOD-323, but 250 Ω ZZT @ 5 mA and 100 pF capacitance | Higher dynamic impedance limits use in precision references; lower capacitance benefits RF-adjacent routing | Select when lower parasitic capacitance outweighs tighter Zener tolerance and lower impedance requirements |
| MMSZ4684T1G | 2.7 V ±5%, 500 mW, SOD-123, with 150 Ω ZZT @ 10 mA and 300 pF capacitance | Larger SOD-123 footprint increases PCB area; higher power rating suits higher-current bias networks | Choose when thermal margin or higher test current (10 mA) is required, accepting larger board footprint |
Compared with BZX384-B2V7,115 and MMSZ4684T1G, the SZMM3Z2V7T1G offers the tightest Zener tolerance (±0.2 V), lowest ZZT, and AEC−Q101 qualification-making it optimal for automotive and high-reliability portable designs where voltage accuracy and qualification status are decisive.
Availability
SZMM3Z2V7T1G is available at Aetrix Electronics and suitable for USB interface protection, low-voltage sensor reference, and automotive body control module applications requiring stable component supply across long production lifecycles.
Supply support for SZMM3Z2V7T1G 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 (Nasdaq: ON) is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and edge applications.
The MM3ZxxxT1G/SZMM3ZxxxT1G series was engineered specifically for miniaturized voltage regulation and ESD protection in portable and automotive electronics, emphasizing AEC−Q101 compliance, ultra-small form factor, and high-reliability packaging.
FAQ
What is the Zener voltage tolerance of SZMM3Z2V7T1G?
The SZMM3Z2V7T1G has a Zener voltage specification of 2.5 V minimum, 2.7 V nominal, and 2.9 V maximum at IZT = 5 mA and TA = 25 °C. This ±0.2 V tolerance (±7.4%) enables precise low-voltage clamping in 2.7–3.0 V systems without requiring post-production trimming or calibration.
Is SZMM3Z2V7T1G qualified for automotive applications?
Yes, SZMM3Z2V7T1G is AEC−Q101 qualified and PPAP capable. The "SZ" prefix explicitly denotes automotive-grade manufacturing controls, site-specific change management, and extended reliability testing-making it suitable for use in body electronics, infotainment, and ADAS subsystems where qualification is mandatory.
What is the maximum operating temperature for SZMM3Z2V7T1G?
The SZMM3Z2V7T1G has a junction and storage temperature range of −65 °C to +150 °C. Its thermal resistance RJA is 416 °C/W on FR-4 board, meaning it must be derated by 2.4 mW/°C above 25 °C ambient to maintain safe operation within its 300 mW steady-state rating.
Does SZMM3Z2V7T1G have Pb-free construction?
Yes, SZMM3Z2V7T1G is Pb-free and RoHS compliant, with Sn-only plating on its leads. The device meets onsemi's Pb-free strategy and is compatible with standard reflow profiles, including peak temperatures up to 260 °C for 10 seconds-verified per J-STD-020 moisture sensitivity level 1.
How does the capacitance of SZMM3Z2V7T1G affect high-speed signal lines?
SZMM3Z2V7T1G exhibits 450 pF capacitance at 0 V bias and 1 MHz, which may attenuate fast edges or cause timing skew if placed directly on USB 2.0 or MIPI data lanes. For such applications, it should be used with series impedance or positioned after signal conditioning stages-not as a direct line-to-ground clamp on GHz-speed traces.
SZMM3Z2V7T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 300 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:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
SZMM3Z2V7T1G FAQ
1.How can I place an order for SZMM3Z2V7T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM3Z2V7T1G 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 SZMM3Z2V7T1G reliable?
The price and inventory of SZMM3Z2V7T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM3Z2V7T1G is usually 5 days.
3.What payment methods are accepted for SZMM3Z2V7T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM3Z2V7T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM3Z2V7T1G?
SZMM3Z2V7T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM3Z2V7T1G 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 SZMM3Z2V7T1G?
For technical support, including SZMM3Z2V7T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM3Z2V7T1G requirements.
6.How does Aetrix verify that SZMM3Z2V7T1G is sourced from the original manufacturer or authorized distributors?
All SZMM3Z2V7T1G 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 SZMM3Z2V7T1G meets industry standards.
7.What is the process for return or replacement of SZMM3Z2V7T1G?
All SZMM3Z2V7T1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM3Z2V7T1G, 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 SZMM3Z2V7T1G part is unused and in its original packaging.
Return procedure for SZMM3Z2V7T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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