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Vishay General Semiconductor - Diodes Division SMZG3792B-M3/5B
- Part No.:
- SMZG3792B-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMZG3792B-M3/5B.pdf
- Description:
- DIODE ZENER 13V 1.5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,575
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Product details
Overview
SMZG3792B-M3/5B from Vishay General Semiconductor is a surface-mount, AEC-Q101-qualified Zener diode with nominal Zener voltage of 13 V, 1500 mW power rating, and low dynamic impedance (550 Ω at 7.5 mA), designed for precision voltage regulation and overvoltage protection in automotive power rails and industrial control circuits.
For engineers reviewing the SMZG3792B-M3/5B datasheet, SMZG3792B-M3/5B pinout, SMZG3792B-M3/5B application, or SMZG3792B-M3/5B equivalent, key selection criteria include its 13 V ±4.7% Zener tolerance, 5.0 μA max reverse leakage at 9.9 V, SMBG (DO-215AA) package compatibility with automated placement, and halogen-free RoHS compliance per M3 suffix.
Technical Context
This Zener diode operates as a single-element, cathode-banded voltage reference device with glass-passivated junction for stable regulation under transient stress. Its 150 °C maximum junction temperature and MSL Level 1 rating support reflow soldering up to 260 °C peak, while low regulation factor ensures minimal output variation across load and temperature.
The SMZG3792B-M3/5B delivers 13 V regulation at 7.5 mA test current with 28.8 Ω typical Zener impedance at IZT, and maintains ≤5.0 μA reverse current at VR = 9.9 V - enabling reliable clamping in 12 V automotive systems where tight voltage margins are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.4 V min / 13.0 V nom / 13.7 V max - defines regulation window for 12 V system rail stabilization |
| Power Dissipation (Ptot) | 1500 mW at TL = 75 °C - supports sustained clamping in thermally constrained PCB layouts |
| Zener Impedance (ZZT) | 550 Ω max at IZT = 7.5 mA - ensures low AC ripple transmission during regulation |
| Reverse Leakage (IR) | 5.0 μA max at VR = 9.9 V - guarantees minimal standby current in always-on automotive modules |
| Junction Temperature (TJ) | -55 °C to +150 °C - enables operation in engine bay and under-hood environments |
| Package | SMBG (DO-215AA) - 2-pin surface-mount outline with 0.255" x 0.155" footprint and cathode band polarity marking |
| AEC-Q101 Qualified | Yes - validated for automotive electronic control units requiring reliability per stress-test standard |
Pinout & Package
SMBG (DO-215AA) package: 2-terminal, surface-mount, molded plastic case with matte tin-plated leads; cathode denoted by color band; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward bias; reference node for reverse-bias regulation | Connected to lower-potential side of regulated circuit; determines polarity of clamping action |
| Cathode | Current exit point during forward bias; Zener voltage reference terminal | Marked with color band; connected to higher-potential rail to enable reverse-breakdown regulation |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Enhances long-term stability and moisture resistance for automotive-grade reliability |
| Low Zener impedance (550 Ω max) | Minimizes output voltage deviation under dynamic load transients |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS modules |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for global vehicle manufacturing |
| MSL Level 1 rating | Enables standard SMT reflow without dry-pack or baking preconditioning |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Clamping transient spikes on 12 V battery-supplied ECUs exposed to load-dump events. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp voltage to ≤13.7 V. Use Value: Prevents damage to downstream 13 V-tolerant microcontrollers using its 1500 mW surge capability and 150 °C thermal rating. | Use Scenario: Providing stable reference voltage for analog front-end amplifiers in factory-floor pressure sensors. IC Role / Device Role / Timing Role: Precision shunt regulator establishing fixed bias point for op-amp input stages. Use Value: Delivers <5.0 μA leakage at 9.9 V, minimizing offset error in high-impedance sensor interfaces. |
| DC-DC Converter Feedback Stabilization | Overvoltage Protection in PoE PD Circuits |
Use Scenario: Regulating feedback node voltage in isolated flyback converters powering infotainment head units. IC Role / Device Role / Timing Role: Shunt reference maintaining constant voltage across optocoupler LED drive resistor. Use Value: Achieves ±4.7% VZ tolerance and low 28.8 Ω ZZT to improve loop stability and reduce output ripple. | Use Scenario: Safeguarding powered-device circuitry against IEEE 802.3af/at overvoltage faults. IC Role / Device Role / Timing Role: Primary overvoltage clamp activated when input exceeds 13.7 V threshold. Use Value: Responds within nanoseconds to limit PoE input to safe levels, leveraging low 550 Ω ZZT for fast energy dissipation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C13-7-F | 300 mW rating, SOT-23 package, 13 V ±5%, 100 Ω ZZT at 5 mA | Lower power handling; suited for signal-level clamping only | Select for space-constrained PCBs where 1500 mW surge capacity is unnecessary |
| 1N4742A | 1000 mW rating, DO-41 through-hole, 12 V ±5%, 9 Ω ZZT at 21 mA | Through-hole mounting; tighter ZZT but no AEC-Q101 qualification | Choose for legacy industrial designs requiring proven reliability without automotive certification |
Compared with BZX84-C13-7-F and 1N4742A, the SMZG3792B-M3/5B uniquely combines AEC-Q101 qualification, 1500 mW power, and SMBG surface-mount compatibility - making it the only option qualified for under-hood automotive voltage regulation where thermal robustness and automated assembly are mandatory.
Availability
SMZG3792B-M3/5B is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor reference design, and PoE-powered device overvoltage safeguarding requiring stable component supply and full traceability.
Supply support for SMZG3792B-M3/5B 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on reliability and application-specific performance.
The SMZG series targets automotive and industrial voltage regulation, engineered for high-power, high-reliability Zener operation in harsh environments - with AEC-Q101 validation and extended temperature range as core design goals.
FAQ
What is the Zener voltage tolerance of SMZG3792B-M3/5B?
The SMZG3792B-M3/5B has a Zener voltage range of 12.4 V (minimum) to 13.7 V (maximum) at 7.5 mA test current, corresponding to a nominal 13 V rating with ±4.7% tolerance. This specification is measured per the Vishay datasheet Document Number 88458, Revision 25-May-2023, and applies to all units marked WH under the SMZG3792B-M3/5B ordering code.
Is SMZG3792B-M3/5B suitable for automotive applications?
Yes, SMZG3792B-M3/5B is AEC-Q101 qualified and rated for operation from -55 °C to +150 °C, making it suitable for automotive powertrain, body control, and ADAS modules. Its halogen-free M3 suffix, MSL Level 1 rating, and glass-passivated junction meet stringent automotive reliability and manufacturability requirements defined in the official Vishay SMZG3788B–SMZG3809B datasheet.
What does the "M3" suffix mean in SMZG3792B-M3/5B?
The "M3" suffix in SMZG3792B-M3/5B indicates halogen-free, RoHS-compliant construction with industrial-grade reliability and JESD 201 Class 2 whisker resistance. It distinguishes this variant from E3 (standard RoHS) and HM3 (AEC-Q101 + halogen-free) versions, and confirms compliance with environmental standards required for global automotive and industrial production.
What is the maximum reverse leakage current for SMZG3792B-M3/5B?
The maximum reverse leakage current for SMZG3792B-M3/5B is 5.0 μA at VR = 9.9 V and TA = 25 °C, as specified in the Vishay Electrical Characteristics table. This low leakage supports precision biasing in high-impedance circuits and minimizes quiescent power loss in always-on automotive subsystems.
Which package does SMZG3792B-M3/5B use, and what are its key mechanical features?
SMZG3792B-M3/5B uses the SMBG (DO-215AA) package: a 2-pin surface-mount outline measuring 0.255" × 0.155" (6.48 mm × 3.94 mm), with matte tin-plated leads, UL 94 V-0 molding compound, and cathode identification via color band. Its MSL Level 1 rating permits standard reflow without baking, and the footprint supports automated placement per the Vishay mechanical drawings in Document Number 88458.
SMZG3792B-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-215AA, SMB Gull Wing
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 13 V
- Tolerance:
- ±5%
- Power - Max:
- 1.5 W
- Impedance (Max) (Zzt):
- 7.5 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 9.9 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMZG3792B-M3/5B FAQ
1.How can I place an order for SMZG3792B-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMZG3792B-M3/5B 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 SMZG3792B-M3/5B reliable?
The price and inventory of SMZG3792B-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMZG3792B-M3/5B is usually 5 days.
3.What payment methods are accepted for SMZG3792B-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMZG3792B-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMZG3792B-M3/5B?
SMZG3792B-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMZG3792B-M3/5B 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 SMZG3792B-M3/5B?
For technical support, including SMZG3792B-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMZG3792B-M3/5B requirements.
6.How does Aetrix verify that SMZG3792B-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMZG3792B-M3/5B 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 SMZG3792B-M3/5B meets industry standards.
7.What is the process for return or replacement of SMZG3792B-M3/5B?
All SMZG3792B-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMZG3792B-M3/5B, 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 SMZG3792B-M3/5B part is unused and in its original packaging.
Return procedure for SMZG3792B-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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