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onsemi SZ1SMA5920BT3G
- Part No.:
- SZ1SMA5920BT3G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SZ1SMA5920BT3G.pdf
- Description:
- DIODE ZENER 6.2V 1.5W SMA
- Quantity:
- Payment:
- Shipping:
Inventory:4,965
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Product details
Overview
SZ1SMA5920BT3G from onsemi is a 1.5 W surface-mount Zener diode with nominal reverse breakdown voltage of 6.2 V, ±5% tolerance, 60.5 Ω dynamic impedance at 4 mA test current, and 2.5 μA leakage current at 4.96 V reverse voltage. It serves as a precision voltage reference or overvoltage clamp in low-power DC regulation circuits.
For engineers reviewing the SZ1SMA5920BT3G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage accuracy, thermal derating behavior above 75°C, low-profile SMA package compatibility with automated placement, and AEC−Q101 qualification for automotive environments.
Technical Context
This device operates as a two-terminal voltage-regulating element relying on controlled reverse-biased avalanche breakdown. Its 6.2 V nominal Zener voltage is specified at IZT = 4 mA, with guaranteed min/max limits of 5.89 V and 6.51 V under thermal equilibrium conditions.
The SMA package (Case 403D) features a flat handling surface and polarity band marking, supporting top-slide or bottom-board mounting. Thermal resistance is 50 °C/W junction-to-lead and 250 °C/W junction-to-ambient, requiring careful PCB copper area design to sustain full 1.5 W dissipation only at TL ≤ 75°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V nominal, 5.89–6.51 V range at IZT = 4 mA - defines stable regulation point for feedback or clamping |
| Power Dissipation (PD) | 1.5 W @ TL = 75°C - requires ≥1 in² copper pad on FR-4 for full rating |
| Zener Impedance (ZZT) | 60.5 Ω @ IZT = 4 mA - determines output voltage variation under load current changes |
| Leakage Current (IR) | 2.5 μA @ VR = 4.96 V - ensures minimal standby power loss in high-impedance bias networks |
| Thermal Resistance (RJA) | 250 °C/W - mandates thermal-aware layout to avoid exceeding 150°C max junction temperature |
| ESD Rating | Class 3 (>16 kV HBM) - supports robust handling in unshielded assembly environments |
| AEC−Q101 Qualified | Yes - validated for automotive electronics including infotainment power rails and sensor biasing |
Pinout & Package
SMA package (Case 403D), surface-mount, low-profile plastic case with molded cathode band. Cathode marked by band; anode is unmarked end. Compatible with standard SMT reflow profiles (260°C/10 s max).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-bias terminal | Connected to higher-potential node in Zener regulation; carries full Zener current during conduction |
| Anode (unmarked end) | Reference/ground terminal | Typically tied to circuit ground or lower-voltage rail; establishes reference potential for voltage clamping |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables predictable regulation without post-production trimming in cost-sensitive consumer and industrial supplies |
| Flat handling surface | Improves pick-and-place accuracy and reduces tombstoning risk during automated assembly |
| Pb-free construction | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 1 |
| AEC−Q101 qualification | Validates reliability for automotive applications including body control modules and lighting drivers |
| UL 94 V−0 flammability rating | Meets safety requirements for enclosed power supply designs and industrial control enclosures |
Applications
| Automotive Sensor Biasing | Industrial Power Supply Clamp |
|---|---|
Use Scenario: Providing stable 6.2 V reference to analog front-end of vehicle cabin temperature sensors. IC Role / Device Role / Timing Role: Zener voltage reference establishing precise bias point for op-amp input stage. Use Value: Maintains sensor linearity across −40°C to +125°C ambient due to AEC−Q101 validation and low tempco. | Use Scenario: Clamping transient overvoltage on 5 V logic rail caused by relay coil flyback in PLC I/O modules. IC Role / Device Role / Timing Role: Two-terminal overvoltage protection device shunting excess energy to ground. Use Value: Limits rail excursion to ≤6.51 V with 60.5 Ω dynamic impedance, preventing damage to downstream 5 V microcontrollers. |
| Consumer USB Charger Feedback | Medical Diagnostic Equipment Reference |
Use Scenario: Setting feedback threshold in secondary-side regulation loop of isolated 5 V USB wall adapters. IC Role / Device Role / Timing Role: Precision voltage reference for optocoupler-based error amplifier. Use Value: Delivers 6.2 V ±5% stability over production lot, enabling consistent output voltage without calibration. | Use Scenario: Generating stable reference for ADC biasing in portable ECG signal conditioning circuits. IC Role / Device Role / Timing Role: Low-noise, low-leakage voltage reference source for analog signal chain. Use Value: 2.5 μA leakage at 4.96 V minimizes offset error in high-impedance sensor interfaces. |
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-C6V2 | 0.3 W rating, SOT-23 package, 60 Ω ZZT @ 5 mA - lower power, smaller footprint | Not rated for AEC−Q101; limited to consumer-grade portable devices | Select when board space is constrained and power dissipation remains below 300 mW |
| MMSZ5232B | 500 mW rating, SOD-123 package, 68 Ω ZZT @ 20 mA - higher test current, different thermal profile | Lacks automotive qualification; used in telecom power management where vibration resistance is less critical | Choose for cost-sensitive industrial controls where 1.5 W capability is unnecessary |
Compared with BZX84-C6V2 and MMSZ5232B, SZ1SMA5920BT3G delivers higher power handling (1.5 W), AEC−Q101 compliance, and SMA package robustness-making it the preferred choice for automotive and industrial applications demanding sustained regulation under thermal stress.
Availability
SZ1SMA5920BT3G is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial power supply clamping, and consumer USB charger feedback requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SZ1SMA5920BT3G 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.
SZ1SMA5920BT3G belongs to the 1SMA59xxBT3G/SZ1SMA59xxBT3G family-engineered for reliable voltage regulation in space-constrained, thermally demanding environments where AEC−Q101 compliance and Pb-free manufacturing are mandatory.
FAQ
What is the Zener voltage tolerance for SZ1SMA5920BT3G?
SZ1SMA5920BT3G has a ±5% Zener voltage tolerance, with guaranteed minimum and maximum values of 5.89 V and 6.51 V respectively at IZT = 4 mA and thermal equilibrium. This tolerance is explicitly defined in the Electrical Characteristics table on page 2 of the onsemi datasheet and applies to all units within the SZ1SMA5920BT3G orderable part number.
Is SZ1SMA5920BT3G qualified for automotive use?
Yes, SZ1SMA5920BT3G is AEC−Q101 qualified and PPAP capable, as confirmed in the Features section of the onsemi datasheet. The "SZ" prefix specifically denotes automotive-grade variants meeting stringent reliability and process control requirements, making SZ1SMA5920BT3G suitable for under-hood and cabin electronics where temperature cycling and long-term stability are critical.
What is the maximum power dissipation for SZ1SMA5920BT3G at 100°C lead temperature?
At 100°C lead temperature, SZ1SMA5920BT3G must be derated linearly from its 1.5 W rating at 75°C. With a derating factor of 20 mW/°C above 75°C, the allowable power drops to 1.0 W (1.5 W − (25°C × 20 mW/°C)). This value is derived directly from the Maximum Ratings table on page 1 of the official onsemi datasheet.
Does SZ1SMA5920BT3G have a specified forward voltage?
Yes, SZ1SMA5920BT3G specifies a maximum forward voltage (VF) of 1.2 V at IF = 200 mA, as stated in the Electrical Characteristics summary on page 2 of the onsemi datasheet. This parameter is consistent across the entire 1SMA59xxBT3G/SZ1SMA59xxBT3G series and confirms diode functionality in forward-biased configurations such as polarity protection.
What packaging format is used for SZ1SMA5920BT3G?
SZ1SMA5920BT3G is supplied in tape-and-reel format with 5,000 units per reel, using the Pb-free SMA package (Case 403D). The ordering information on page 1 of the onsemi datasheet confirms this configuration, and the mechanical outline drawing on page 5 verifies the SMA footprint and polarity band marking for automated placement.
SZ1SMA5920BT3G 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):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 1.5 W
- Impedance (Max) (Zzt):
- 2 Ohms
- Current - Reverse Leakage @ Vr:
- 2.5 µA @ 4 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
SZ1SMA5920BT3G FAQ
1.How can I place an order for SZ1SMA5920BT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZ1SMA5920BT3G 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 SZ1SMA5920BT3G reliable?
The price and inventory of SZ1SMA5920BT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZ1SMA5920BT3G is usually 5 days.
3.What payment methods are accepted for SZ1SMA5920BT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZ1SMA5920BT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZ1SMA5920BT3G?
SZ1SMA5920BT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZ1SMA5920BT3G 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 SZ1SMA5920BT3G?
For technical support, including SZ1SMA5920BT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZ1SMA5920BT3G requirements.
6.How does Aetrix verify that SZ1SMA5920BT3G is sourced from the original manufacturer or authorized distributors?
All SZ1SMA5920BT3G 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 SZ1SMA5920BT3G meets industry standards.
7.What is the process for return or replacement of SZ1SMA5920BT3G?
All SZ1SMA5920BT3G units undergo pre-shipment inspection (PSI). If there is an issue with SZ1SMA5920BT3G, 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 SZ1SMA5920BT3G part is unused and in its original packaging.
Return procedure for SZ1SMA5920BT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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