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Vishay General Semiconductor - Diodes Division SMZJ3790A-E3/52
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- Part No.:
- SMZJ3790A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMZJ3790A-E3/52.pdf
- Description:
- DIODE ZENER 11V 1.5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,278
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Product details
Overview
SMZJ3790A-E3/52 from Vishay General Semiconductor is a surface-mount Zener diode designed for precision voltage regulation and overvoltage protection in power supply rails and I/O interfaces. It delivers a nominal Zener voltage of 11.0 V at 6.0 mA test current, with maximum Zener impedance of 34.1 Ω, 1500 mW total power dissipation, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMZJ3790A-E3/52 datasheet, SMZJ3790A-E3/52 pinout, SMZJ3790A-E3/52 application, or SMZJ3790A-E3/52 equivalent, key selection criteria include its DO-214AA (SMBJ) package compatibility, low regulation factor, glass-passivated junction, MSL Level 1 rating, and compliance with JESD 201 Class 1A whisker testing - all critical for high-reliability industrial and automotive PCB designs.
Technical Context
This device operates as a single-junction, silicon-based Zener diode optimized for stable DC voltage reference and transient clamping. Its construction features a glass-passivated chip junction enabling low leakage (≤5.0 μA at VR = 8.4 V), tight Zener voltage tolerance (±5% over 10.5–11.6 V range), and thermal stability up to TJ = +150 °C.
The SMZJ3790A-E3/52 is rated for continuous operation across –55 °C to +150 °C junction temperature range and supports pulse current handling per standardized test conditions (IZT = 6.0 mA, IZK = 0.25 mA). Its low dynamic impedance (34.1 Ω at IZT) ensures minimal output voltage variation under load changes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.5 V min / 11.0 V nom / 11.6 V max - defines regulated output voltage window at 6.0 mA, suitable for 12 V rail stabilization |
| Power Dissipation (Ptot) | 1500 mW - enables robust surge handling without derating below TL = 75 °C on standard PCB copper pads |
| Zener Impedance (ZZT) | 34.1 Ω max at IZT = 6.0 mA - ensures <1% output deviation under typical load transients |
| Reverse Leakage (IR) | 5.0 μA max at VR = 8.4 V - guarantees low standby power loss in battery-backed circuits |
| Junction Temp (TJ) | –55 °C to +150 °C - supports under-hood automotive and industrial control environments |
| Qualification | AEC-Q101 qualified - validated for automotive electronics per stress-test requirements including HTGB, HTRB, and TCT |
| Package | DO-214AA (SMBJ) - industry-standard surface-mount outline with cathode band marking and 0.096 g unit weight |
Pinout & Package
DO-214AA (SMBJ) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band at one end. Designed for automated placement and reflow soldering per J-STD-002/JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node during regulation; reverse-biased in normal Zener operation |
| Cathode | Zener breakdown terminal | Connected to higher-potential node; voltage referenced to this terminal during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMBJ package | Enables high-density PCB layouts and compatibility with standard pick-and-place equipment |
| Glass-passivated junction | Provides enhanced moisture resistance and long-term parameter stability vs. epoxy-passivated alternatives |
| MSL Level 1 rating | Allows unlimited floor life and reflow at peak 260 °C without baking preconditioning |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS subsystems |
| JESD 201 Class 1A whisker resistance | Eliminates risk of tin whisker growth-induced short circuits in long-life applications |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Input Protection |
|---|---|
Use Scenario: Clamping 12 V CAN bus power rail against load dump transients. IC Role / Device Role / Timing Role: Zener diode acting as shunt regulator and overvoltage clamp. Use Value: Maintains rail integrity within ±5% during 12 V system surges up to 40 V, leveraging 1500 mW Ptot and 11.0 V nominal Zener point. |
Use Scenario: Protecting 24 V digital input channels from ESD and field-wiring faults. IC Role / Device Role / Timing Role: Primary voltage clamp at signal conditioning front-end. Use Value: Limits input voltage to safe levels using 5.0 μA IR and 34.1 Ω ZZT, ensuring downstream logic ICs remain undamaged. |
| Medical Power Supply Reference | Telecom DC-DC Converter Feedback |
Use Scenario: Providing stable 11 V reference for isolated auxiliary bias supplies in diagnostic imaging systems. IC Role / Device Role / Timing Role: Precision voltage reference element in feedback loop. Use Value: Delivers <±1% regulation accuracy over temperature due to low Zener impedance and tight VZ tolerance. |
Use Scenario: Setting output voltage in secondary-side synchronous buck controller feedback network. IC Role / Device Role / Timing Role: Zener-based voltage divider component for error amplifier reference. Use Value: Enables accurate 12 V output setpoint with minimal drift, supported by AEC-Q101 reliability and 150 °C TJ rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C11LT1G | Lower Ptot (350 mW), SOT-23 package, ±5% VZ tolerance, no AEC-Q101 qualification | Suitable only for low-power consumer or non-automotive signal-level regulation | Select when board space is constrained and automotive qualification is not required |
| 1N4740A | Through-hole DO-41 package, 1 W Ptot, ±5% VZ, no MSL or whisker certification | Limited to prototyping or legacy through-hole assemblies; incompatible with automated SMT lines | Choose only for hand-soldered repairs or cost-sensitive non-production builds |
Compared with BZX84-C11LT1G and 1N4740A, the SMZJ3790A-E3/52 provides 4.3× higher power handling than the SOT-23 part and full SMT process support versus the DO-41 alternative - making it the sole option meeting AEC-Q101, MSL Level 1, and 1500 mW requirements in DO-214AA footprint.
Availability
SMZJ3790A-E3/52 is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and medical power supply designs requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for SMZJ3790A-E3/52 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 SMZJ series targets high-reliability voltage regulation in harsh environments, with design focus on automotive, industrial, and medical applications demanding AEC-Q101 validation and extended temperature operation.
FAQ
What is the Zener voltage tolerance for SMZJ3790A-E3/52?
The SMZJ3790A-E3/52 has a Zener voltage range of 10.5 V (minimum) to 11.6 V (maximum) at 6.0 mA test current, corresponding to a ±5% tolerance around the nominal 11.0 V value. This tolerance is specified under standard test conditions (TA = 25 °C) and remains stable across its operating temperature range due to low temperature coefficient characteristics.
Is SMZJ3790A-E3/52 RoHS compliant and lead-free?
Yes, the SMZJ3790A-E3/52 carries the "E3" suffix, indicating full RoHS compliance per Directive 2011/65/EU and lead-free matte tin plating on terminals. It meets JESD 201 Class 1A whisker resistance requirements and is rated for peak reflow temperatures up to 260 °C without preconditioning.
What is the maximum power dissipation of SMZJ3790A-E3/52 at 75 °C lead temperature?
The SMZJ3790A-E3/52 maintains its full 1500 mW maximum power dissipation rating at TL = 75 °C when mounted on a 0.31" × 0.31" × 0.08" copper pad. Above this temperature, power must be linearly derated per the curve in Figure 1 of Vishay document 88402, reaching zero dissipation at TL = 150 °C.
Does SMZJ3790A-E3/52 have automotive qualification?
Yes, SMZJ3790A-E3/52 is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT). This qualification confirms its suitability for automotive powertrain, body electronics, and ADAS applications where reliability under thermal and electrical stress is critical.
What package type does SMZJ3790A-E3/52 use and how is polarity identified?
The SMZJ3790A-E3/52 uses the DO-214AA (SMBJ) surface-mount package. Polarity is identified by a visible cathode band located near one end of the molded case - the banded end is the cathode terminal, and the opposite end is the anode. This marking aligns with JEDEC standards for unidirectional Zener diodes.
SMZJ3790A-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±10%
- Power - Max:
- 1.5 W
- Impedance (Max) (Zzt):
- 6 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 8.4 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMZJ3790A-E3/52 FAQ
1.How can I place an order for SMZJ3790A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMZJ3790A-E3/52 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 SMZJ3790A-E3/52 reliable?
The price and inventory of SMZJ3790A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMZJ3790A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMZJ3790A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMZJ3790A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMZJ3790A-E3/52?
SMZJ3790A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMZJ3790A-E3/52 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 SMZJ3790A-E3/52?
For technical support, including SMZJ3790A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMZJ3790A-E3/52 requirements.
6.How does Aetrix verify that SMZJ3790A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMZJ3790A-E3/52 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 SMZJ3790A-E3/52 meets industry standards.
7.What is the process for return or replacement of SMZJ3790A-E3/52?
All SMZJ3790A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMZJ3790A-E3/52, 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 SMZJ3790A-E3/52 part is unused and in its original packaging.
Return procedure for SMZJ3790A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMZJ3790A-E3/52 Tags
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