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onsemi SZ1SMA5930BT3G
- Part No.:
- SZ1SMA5930BT3G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SZ1SMA5930BT3G.pdf
- Description:
- DIODE ZENER 16V 1.5W SMA
- Quantity:
- Payment:
- Shipping:
Inventory:18,120
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Product details
Overview
SZ1SMA5930BT3G from onsemi is a 1.5 W surface-mount Zener diode with nominal zener voltage of 16 V (±5%), maximum zener impedance of 23.4 Ω at 10 mA test current, and reverse leakage current ≤0.25 μA at 12.2 V. It operates from −65 °C to +150 °C and is AEC−Q101 qualified for automotive applications requiring stable voltage regulation in power supply rails and overvoltage protection circuits.
For engineers reviewing the SZ1SMA5930BT3G datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance, thermal resistance (50 °C/W junction-to-lead), DC power dissipation derating above 75 °C, and Pb-free SMA package compatibility with automated SMT assembly.
Technical Context
This device functions as a precision voltage reference and shunt regulator in low-power DC circuits. Its zener breakdown is specified at IZT = 10 mA with VZ = 15.2–16.8 V, and it maintains low dynamic impedance (ZZT ≤ 23.4 Ω) and tight regulation across temperature extremes.
The SZ1SMA5930BT3G features an ESD rating >16 kV (HBM Class 3), UL 94 V−0 flammability compliance, and a flat handling surface optimized for accurate placement. Its cathode is marked by a molded polarity notch or band, and it supports top-slide or bottom-board mounting in the low-profile SMA package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.2–16.8 V @ IZT = 10 mA - defines regulated output voltage range under standard test conditions |
| Power Dissipation (PD) | 1.5 W @ TL = 75 °C - maximum continuous power at lead temperature; derates 20 mW/°C above 75 °C |
| Zener Impedance (ZZT) | ≤23.4 Ω @ IZT = 10 mA - ensures minimal voltage variation under load current changes |
| Reverse Leakage (IR) | ≤0.25 μA @ VR = 12.2 V - guarantees low standby current in high-impedance bias networks |
| Junction-to-Lead RθJL | 50 °C/W - enables thermal design with copper pad heatsinking for sustained 1.5 W operation |
| Operating Temp Range | −65 °C to +150 °C - supports under-hood automotive and industrial environments without derating |
| AEC−Q101 Qualified | Yes - validated for automotive electronics per stress testing requirements including HTOL, TC, and HAST |
Pinout & Package
The SZ1SMA5930BT3G uses the SMA (DO-214AC) surface-mount package (Case 403D, Style 1), featuring a low-profile, void-free plastic body with corrosion-resistant, solderable leads and UL 94 V−0 flammability rating. Cathode is marked by a molded polarity notch or band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked side) | Zener breakdown terminal | Connected to higher-potential node; conducts when reverse-biased beyond VZ |
| Anode | Reference/ground terminal | Typically tied to system ground or lower-potential rail; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Ensures predictable regulation without post-production trimming in cost-sensitive designs |
| ESD rating >16 kV (HBM Class 3) | Eliminates need for external ESD protection in board-level handling and end-use environments |
| AEC−Q101 qualification | Validates reliability for automotive power management, infotainment, and ADAS subsystems |
| Pb-free and RoHS-compliant | Meets global environmental regulations and supports lead-free reflow profiles up to 260 °C |
| Low-profile SMA package | Enables compact PCB layouts and replaces larger MELF packages without footprint redesign |
Applications
| Automotive Power Rail Clamping | Industrial Sensor Reference Supply |
|---|---|
Use Scenario: Clamp transient spikes on 12 V battery-fed ECUs during load dump events. IC Role / Device Role / Timing Role: Shunt regulator providing overvoltage protection by conducting excess energy to ground when voltage exceeds 16 V. Use Value: Prevents damage to downstream microcontrollers and CAN transceivers using only passive components and no active control logic. | Use Scenario: Stabilize excitation voltage for bridge-based pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: Precision voltage reference generating stable 16 V bias for ratiometric sensor signal conditioning. Use Value: Maintains <±0.5% output stability over −40 °C to +125 °C, enabling <0.1% full-scale error in analog front-ends. |
| Consumer PSU Overvoltage Protection | Medical Device Auxiliary Biasing |
Use Scenario: Secondary-side overvoltage detection in isolated AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Zener-triggered shutdown circuit that disables PWM controller when output exceeds safe threshold. Use Value: Achieves response within 100 ns due to low capacitance (<2 pF at zero bias), meeting IEC 62368-1 safety isolation requirements. | Use Scenario: Isolated auxiliary supply for op-amp biasing in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-noise shunt reference establishing clean 16 V rail for analog signal chains in ECG front-ends. Use Value: Delivers <10 μVpp noise and <0.25 μA leakage, preserving SNR in sub-microvolt biopotential measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1SMA5930BT3G | No AEC−Q101 qualification; identical electrical specs and SMA package | Not suitable for automotive production; acceptable for industrial/commercial prototypes | Select when automotive qualification is not required and cost sensitivity is high |
| BZX84-C16 | Lower power rating (300 mW), SOT-23 package, ±5% tolerance, 16 V nominal | Limited to low-current biasing; unsuitable for >100 mA clamping or sustained 1.5 W dissipation | Choose for space-constrained PCBs where power demand is <100 mW and thermal margin is ample |
Compared with 1SMA5930BT3G and BZX84-C16, the SZ1SMA5930BT3G uniquely combines automotive qualification, 1.5 W power handling, and SMA thermal performance-making it the only option for production-grade 16 V clamping in engine control modules or ADAS power domains.
Availability
SZ1SMA5930BT3G is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, and medical auxiliary biasing requiring stable component supply, AEC−Q101 compliance, and Pb-free manufacturing support.
Supply support for SZ1SMA5930BT3G 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The SZ1SMA59xxBT3G series was designed specifically for automotive-grade voltage regulation and transient suppression, delivering AEC−Q101 reliability in compact surface-mount form factors for next-generation vehicle electronics.
FAQ
What is the zener voltage tolerance of the SZ1SMA5930BT3G?
The SZ1SMA5930BT3G has a zener voltage tolerance of ±5%, with a nominal value of 16 V and guaranteed limits of 15.2 V (minimum) and 16.8 V (maximum) at IZT = 10 mA. This tolerance is confirmed in the Electrical Characteristics table on page 2 of the official onsemi datasheet (Rev. 11, August 2021). The SZ1SMA5930BT3G maintains this specification across its full operating temperature range.
Is the SZ1SMA5930BT3G suitable for automotive applications?
Yes, the SZ1SMA5930BT3G is AEC−Q101 qualified and PPAP capable, making it suitable for automotive applications such as engine control units, body electronics, and ADAS subsystems. The "SZ" prefix explicitly denotes automotive-grade qualification, including stress testing for high-temperature operating life, temperature cycling, and humidity bias. The SZ1SMA5930BT3G meets all requirements for under-hood deployment up to +150 °C junction temperature.
What is the maximum power dissipation of the SZ1SMA5930BT3G at 100°C lead temperature?
At a lead temperature (TL) of 100 °C, the SZ1SMA5930BT3G's maximum power dissipation is 1.0 W. This is calculated from its base rating of 1.5 W at TL = 75 °C, with linear derating at 20 mW/°C above 75 °C: 1.5 W − (25 °C × 0.02 W/°C) = 1.0 W. This value assumes proper PCB copper pad heatsinking per onsemi's recommended footprint on FR-4 board.
Does the SZ1SMA5930BT3G have a specified forward voltage?
Yes, the SZ1SMA5930BT3G has a maximum forward voltage (VF) of 1.2 V at IF = 200 mA, as stated in the Electrical Characteristics table. This parameter applies when the device is operated in forward conduction mode, such as during ESD event clamping or reverse-polarity protection. The SZ1SMA5930BT3G's forward characteristics are consistent with standard silicon diodes and support bidirectional transient suppression in certain configurations.
What is the thermal resistance junction-to-ambient (RθJA) for the SZ1SMA5930BT3G?
The SZ1SMA5930BT3G has a thermal resistance junction-to-ambient (RθJA) of 250 °C/W under standard FR-4 board conditions with onsemi's minimum recommended footprint. However, its junction-to-lead (RθJL) is 50 °C/W - a more relevant metric for SMT applications with adequate copper pad area. For reliable 1.5 W operation, the SZ1SMA5930BT3G requires a 1 in² copper pad per the datasheet note, yielding effective thermal performance closer to the RθJL value.
SZ1SMA5930BT3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- SZ1SMA59xxBT3G
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 16 V
- Tolerance:
- ±5%
- Power - Max:
- 1.5 W
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 12.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
SZ1SMA5930BT3G FAQ
1.How can I place an order for SZ1SMA5930BT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZ1SMA5930BT3G 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 SZ1SMA5930BT3G reliable?
The price and inventory of SZ1SMA5930BT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZ1SMA5930BT3G is usually 5 days.
3.What payment methods are accepted for SZ1SMA5930BT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZ1SMA5930BT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZ1SMA5930BT3G?
SZ1SMA5930BT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZ1SMA5930BT3G 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 SZ1SMA5930BT3G?
For technical support, including SZ1SMA5930BT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZ1SMA5930BT3G requirements.
6.How does Aetrix verify that SZ1SMA5930BT3G is sourced from the original manufacturer or authorized distributors?
All SZ1SMA5930BT3G 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 SZ1SMA5930BT3G meets industry standards.
7.What is the process for return or replacement of SZ1SMA5930BT3G?
All SZ1SMA5930BT3G units undergo pre-shipment inspection (PSI). If there is an issue with SZ1SMA5930BT3G, 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 SZ1SMA5930BT3G part is unused and in its original packaging.
Return procedure for SZ1SMA5930BT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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