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Vishay General Semiconductor - Diodes Division SMPZ3928B-E3/84A
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- Part No.:
- SMPZ3928B-E3/84A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-220AA
- Datasheet:
-
SMPZ3928B-E3/84A.pdf
- Description:
- DIODE ZENER 13V 500MW DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,026
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Product details
Overview
SMPZ3928B-E3/84A from Vishay General Semiconductor is a surface-mount Zener voltage-regulating diode with nominal Zener voltage 13.0 V, 7.0 mA test current (IZT), 550 Ω maximum Zener impedance at IZT, 0.5 μA maximum reverse leakage at 9.9 V, and 115 mA maximum DC Zener current - used for precision voltage reference and overvoltage protection in power supply rails.
For engineers reviewing the SMPZ3928B-E3/84A datasheet, SMPZ3928B-E3/84A pinout, SMPZ3928B-E3/84A application, or SMPZ3928B-E3/84A equivalent, this page delivers verified electrical parameters, thermal resistance values, package dimensions, MSL level 1 compliance, and real-world use context for industrial and embedded system design validation.
Technical Context
This device operates as a single-element, cathode-marked Zener diode in the eSMP® series, optimized for stable regulation under DC and pulse conditions (300 μs, 1 % duty cycle). Its low-profile DO-220AA package enables high-density PCB layouts while maintaining 150 °C max junction temperature and 50 °C/W typical junction-to-lead thermal resistance.
Designed for automated SMT placement, it features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, halogen-free molding compound rated UL 94 V-0, and meets JESD 201 Class 1A whisker test requirements - supporting reliable reflow soldering at 260 °C peak terminal temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.4 V min / 13.0 V nom / 13.7 V max at 7.0 mA - defines tight regulation window for 12 V rail stabilization |
| Max Zener Impedance (ZZT) | 550 Ω at IZT = 7.0 mA - ensures minimal output voltage deviation under load transients |
| Reverse Leakage (IR) | 0.5 μA max at VR = 9.9 V - guarantees low standby power loss in always-on circuits |
| Power Dissipation | 500 mW at TA = 25 °C; 1500 mW at TL = 75 °C - enables higher derated operation on thermally enhanced pads |
| Thermal Resistance | RθJL = 50 °C/W typical - supports efficient heat transfer to PCB copper when mounted per spec (5 mm × 5 mm pads) |
| Moisture Sensitivity | MSL Level 1 per J-STD-020 - allows unlimited floor life and standard reflow without baking |
Pinout & Package
Package: SMP (DO-220AA), ultra-low-profile surface-mount case with cathode indicated by color band; 24 mg weight; UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Zener conduction return path | Connected to lower-potential node (e.g., GND or return rail) during regulation |
| Cathode | Zener breakdown voltage reference node | Marked with color band; connected to regulated voltage node (e.g., 12 V rail) |
Key Features
| Feature | Design Value |
|---|---|
| Low profile height | 1.0 mm typical - enables stacking under shields and compatibility with low-clearance enclosures |
| Low Zener impedance | 550 Ω max at 7 mA - improves line/load regulation accuracy in feedback loops |
| Halogen-free & RoHS | M3-grade construction - satisfies industrial environmental compliance and long-term reliability standards |
| MSL Level 1 rating | No moisture sensitivity handling restrictions - simplifies manufacturing logistics and eliminates pre-bake steps |
Applications
| Industrial Power Monitoring | Automotive Body Control Module |
|---|---|
Use Scenario: Monitoring 12 V battery rail voltage in PLC I/O modules with ±5 % tolerance. IC Role / Device Role / Timing Role: Zener diode providing stable 13 V reference for ADC input scaling and comparator threshold setting. Use Value: Tight 12.4–13.7 V Zener range ensures accurate 12 V rail detection across temperature and aging. | Use Scenario: Overvoltage clamp protecting LIN bus transceiver inputs from load-dump spikes. IC Role / Device Role / Timing Role: Shunt regulator clamping transient excursions above 13.7 V to safeguard downstream logic. Use Value: 115 mA max Zener current and 1500 mW dissipation at TL = 75 °C sustain short-duration surges without failure. |
| Medical Sensor Signal Conditioning | IoT Edge Node Voltage Reference |
Use Scenario: Providing bias voltage for op-amp instrumentation amplifiers in portable ECG front-ends. IC Role / Device Role / Timing Role: Low-leakage (0.5 μA) Zener reference stabilizing gain-setting network against supply variation. Use Value: Sub-microamp reverse leakage preserves battery life in always-on wearable devices. | Use Scenario: Generating precise 13 V reference for buck converter feedback divider in LPWAN sensor nodes. IC Role / Device Role / Timing Role: Primary voltage reference element in closed-loop DC-DC regulation circuitry. Use Value: 50 °C/W RθJL enables thermal stability on compact 2-layer PCBs with minimal copper area. |
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 | Higher ZZT (600 Ω vs. 550 Ω); lower Ptot (300 mW at 25 °C); SOT-23 package | Less thermal margin in high-power clamping; unsuitable for >100 mA continuous Zener current | Select when board space is constrained and power dissipation remains below 300 mW |
| 1N4742A | Through-hole DO-41; 12 V nominal; higher ZZT (9 Ω at 21 mA); no MSL Level 1 rating | Not compatible with automated SMT lines; requires wave soldering or hand assembly | Select only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with BZX84-C13-7-F and 1N4742A, SMPZ3928B-E3/84A delivers superior thermal performance (1500 mW at 75 °C), tighter Zener tolerance (±4.3 %), and full SMT manufacturability - making it optimal for high-reliability, volume-produced industrial and automotive PCBs.
Availability
SMPZ3928B-E3/84A is available at Aetrix Electronics and suitable for industrial power monitoring, automotive body control modules, medical sensor signal conditioning, and IoT edge node voltage reference applications requiring stable component supply and consistent Zener regulation performance.
Supply support for SMPZ3928B-E3/84A 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, efficiency, and application-specific optimization.
The SMPZ39XB series was engineered for high-volume, surface-mount voltage regulation in space-constrained industrial and automotive systems - delivering low-profile packaging, robust thermal performance, and tight Zener tolerances without sacrificing manufacturability.
FAQ
What is the nominal Zener voltage of SMPZ3928B-E3/84A and its tolerance?
The SMPZ3928B-E3/84A has a nominal Zener voltage of 13.0 V, with a minimum of 12.4 V and maximum of 13.7 V at 7.0 mA test current - corresponding to a ±4.3 % tolerance band. This specification is measured under standard conditions (TA = 25 °C) and is validated per Vishay Document Number 88482. The SMPZ3928B-E3/84A maintains this voltage range across its operating junction temperature range of -65 °C to +150 °C.
Does SMPZ3928B-E3/84A support lead-free reflow soldering?
Yes, SMPZ3928B-E3/84A supports lead-free reflow soldering with a maximum peak terminal temperature of 260 °C for 10 seconds, compliant with J-STD-020 MSL Level 1. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability standards, and the device passes JESD 201 Class 1A whisker testing. The SMPZ3928B-E3/84A is halogen-free and RoHS-compliant, making it suitable for modern eco-conscious manufacturing processes.
What is the maximum power dissipation of SMPZ3928B-E3/84A at ambient temperature?
The SMPZ3928B-E3/84A dissipates up to 500 mW at TA = 25 °C, increasing to 1500 mW at TL = 75 °C when mounted on 5.0 mm × 5.0 mm copper pads per the recommended layout. This derating behavior follows the curve in Figure 1 of Vishay Document 88482. The SMPZ3928B-E3/84A achieves this via low thermal resistance (RθJL = 50 °C/W), enabling effective heat transfer from junction to PCB copper.
How does SMPZ3928B-E3/84A compare to standard through-hole Zeners like 1N4742A?
The SMPZ3928B-E3/84A offers surface-mount compatibility, MSL Level 1 handling, and tighter Zener tolerance (±4.3 % vs. ±5 % for 1N4742A), while delivering higher thermal capability (1500 mW at 75 °C vs. 1000 mW). Unlike the through-hole 1N4742A, the SMPZ3928B-E3/84A uses DO-220AA packaging for automated placement and reduced board area. Both regulate near 13 V, but SMPZ3928B-E3/84A is optimized for high-volume SMT production.
What is the reverse leakage current specification for SMPZ3928B-E3/84A?
The SMPZ3928B-E3/84A specifies a maximum reverse leakage current (IR) of 0.5 μA at VR = 9.9 V and TA = 25 °C. This low leakage supports energy-sensitive applications such as battery-powered sensors and always-on monitoring circuits. The value is confirmed in the Electrical Characteristics table of Vishay Document 88482 and applies to the full commercial temperature range. The SMPZ3928B-E3/84A maintains this performance due to its optimized silicon process and passivation.
SMPZ3928B-E3/84A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- eSMP®
- Package/Case:
- DO-220AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 13 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 9.9 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-220AA (SMP)
SMPZ3928B-E3/84A FAQ
1.How can I place an order for SMPZ3928B-E3/84A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPZ3928B-E3/84A 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 SMPZ3928B-E3/84A reliable?
The price and inventory of SMPZ3928B-E3/84A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMPZ3928B-E3/84A is usually 5 days.
3.What payment methods are accepted for SMPZ3928B-E3/84A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPZ3928B-E3/84A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPZ3928B-E3/84A?
SMPZ3928B-E3/84A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPZ3928B-E3/84A 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 SMPZ3928B-E3/84A?
For technical support, including SMPZ3928B-E3/84A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPZ3928B-E3/84A requirements.
6.How does Aetrix verify that SMPZ3928B-E3/84A is sourced from the original manufacturer or authorized distributors?
All SMPZ3928B-E3/84A 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 SMPZ3928B-E3/84A meets industry standards.
7.What is the process for return or replacement of SMPZ3928B-E3/84A?
All SMPZ3928B-E3/84A units undergo pre-shipment inspection (PSI). If there is an issue with SMPZ3928B-E3/84A, 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 SMPZ3928B-E3/84A part is unused and in its original packaging.
Return procedure for SMPZ3928B-E3/84A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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