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Diodes Incorporated 1SMB5930B-13
- Part No.:
- 1SMB5930B-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
1SMB5930B-13.pdf
- Description:
- DIODE ZENER 16V 550MW SMB
- Quantity:
- Payment:
- Shipping:
Inventory:8,971
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Product details
Overview
1SMB5930B-13 from Diodes Incorporated is a 3.0W surface-mount power Zener diode with nominal zener voltage of 16.0V (±5%), dynamic impedance of 23.4Ω at 10mA test current, and maximum reverse leakage of 0.25µA at 12.2V. It provides precision voltage regulation in DC power rails and overvoltage protection circuits for industrial power supplies.
For engineers reviewing the 1SMB5930B-13 datasheet, 1SMB5930B-13 pinout, 1SMB5930B-13 application, or 1SMB5930B-13 equivalent, key selection criteria include zener voltage tolerance, power derating above +25°C, thermal resistance (RθJA = 226°C/W), and ESD robustness (Class 3, >16kV HBM).
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and temperature conditions. Its 3.0W power rating applies at terminal temperature (TL = +75°C), with linear derating of 40mW/°C above that point.
The device features low dynamic impedance (23.4Ω at IZT = 10mA) and tight voltage tolerance (±5%), enabling accurate regulation in feedback loops and voltage-clamping applications. Its SMB package supports automated assembly and meets RoHS 3 and halogen-free "Green" requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16.0V ±5% - defines clamping threshold in overvoltage protection and reference circuits |
| Power Dissipation (PD) | 3.0W @ TL = +75°C - sets maximum continuous power handling on PCB with defined thermal pad layout |
| Zener Impedance (ZZT) | 23.4Ω @ IZT = 10mA - determines regulation accuracy under dynamic load changes |
| Reverse Leakage (IR) | 0.25µA @ VR = 12.2V - ensures minimal quiescent current in standby-mode protection circuits |
| Thermal Resistance (RθJA) | 226°C/W - indicates junction-to-ambient heat transfer efficiency on standard FR-4 board |
| ESD Rating | Class 3 (>16kV HBM) - enables reliable operation in electrostatic-prone manufacturing and field environments |
Pinout & Package
Package: SMB (Surface Mount Body), molded plastic case with UL 94V-0 flammability rating, cathode band polarity marking, and matte tin-plated copper alloy leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / Zener cathode reference node | Connected to lower-potential side of regulated rail; forms reference ground for voltage clamp |
| Cathode | Zener breakdown terminal / voltage regulation output | Connected to higher-potential side; delivers stable 16.0V reference when reverse-biased above VZ |
Key Features
| Feature | Design Value |
|---|---|
| 3.0W power dissipation capability | Enables robust overvoltage clamping in 24V industrial control power rails without external heatsinking |
| ±5% zener voltage tolerance | Reduces need for post-production calibration in precision reference designs |
| ESD Class 3 (>16kV HBM) | Eliminates need for additional ESD protection components in front-end power interfaces |
| Halogen- and antimony-free "Green" construction | Meets IPC-1752A material declaration requirements for automotive and medical OEMs |
Applications
| Industrial Power Supply Regulation | Automotive ECU Voltage Reference |
|---|---|
Use Scenario: Stabilizing 15–18V auxiliary rail in programmable logic controller (PLC) power module. IC Role / Device Role: Zener diode acting as shunt voltage reference for TL431-based feedback loop. Use Value: Maintains ±1.5% output regulation across -40°C to +105°C ambient with <23.4Ω dynamic impedance. | Use Scenario: Providing precise 16.0V reference for microcontroller ADC input scaling in engine control unit. IC Role / Device Role: Precision voltage clamp protecting analog front-end from battery transients. Use Value: Limits ADC input to safe range during load-dump events while contributing <0.25µA leakage at 12.2V. |
| Telecom Line Card Protection | Medical Imaging Power Sequencing |
Use Scenario: Clamping surge-induced overvoltage on -48V DC distribution bus in base station line card. IC Role / Device Role: Primary shunt protector absorbing transient energy before downstream DC-DC converters. Use Value: Withstands 3.0W peak pulse power per IEEE C62.41.2 Category A waveforms due to SMB thermal mass. | Use Scenario: Enabling controlled power-up sequencing of FPGA and analog sensor rails in MRI subsystem. IC Role / Device Role: Voltage supervisor reference element triggering enable signals at 16.0V threshold. Use Value: ±5% tolerance ensures deterministic timing margin between 12V and 16V rail activation sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C16 | 300mW rating, SOT-23 package, RθJA = 350°C/W, ±5% VZ | Lower power handling limits use to signal-level references, not power rail clamping | Select when space-constrained PCBs require SOT-23 footprint and power demand ≤300mW |
| 1N5347B | 5.0W rating, DO-201AD package, VZ = 16V ±5%, RθJA = 20°C/W with heatsink | Through-hole mounting and higher thermal conductivity suit high-reliability power supplies | Select when through-hole assembly is required and thermal management includes external heatsinking |
Compared with BZX84-C16 and 1N5347B, the 1SMB5930B-13 uniquely balances 3.0W surface-mount power handling, SMB manufacturability, and 226°C/W thermal performance-making it optimal for automated production of mid-power industrial regulators where SOT-23 lacks robustness and DO-201AD impedes density.
Availability
1SMB5930B-13 is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive ECU voltage reference, and telecom line card protection requiring stable component supply and RoHS 3 compliance.
Supply support for 1SMB5930B-13 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and Europe.
The SMB-series Zener diodes are part of Diodes' power management portfolio, engineered specifically for high-reliability voltage regulation and transient suppression in industrial, automotive, and communications equipment.
FAQ
What is the maximum continuous reverse voltage this diode can withstand before breakdown?
The 1SMB5930B-13 has a nominal zener voltage of 16.0V with ±5% tolerance, meaning breakdown occurs between 15.2V and 16.8V. It is rated for continuous operation at this voltage in reverse bias, provided power dissipation remains within derated limits (e.g., 550mW at +25°C ambient).
How does its thermal performance compare to standard DO-41 Zeners?
With RθJA = 226°C/W on FR-4, the 1SMB5930B-13 dissipates heat less efficiently than DO-41 devices (typically ~100°C/W with leads soldered), but its SMB package enables automated placement and offers superior moisture resistance (J-STD-020 Level 1) versus axial-leaded alternatives.
Can this Zener be used in series for higher voltage references?
Yes-multiple 1SMB5930B-13 units may be stacked in series to achieve higher reference voltages, but ensure matched VZ tolerance (±5%) and equal current sharing via balancing resistors to prevent thermal runaway in each device.
Is the cathode band orientation consistent across all SMB-packaged Zeners from Diodes Inc.?
Yes-the cathode band is always located at the same end of the SMB body per Diodes Incorporated's standardized marking convention, verified in AP02001 pad layout documentation and confirmed across DS32125 Rev. 8 package drawings.
1SMB5930B-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 16 V
- Tolerance:
- ±5%
- Power - Max:
- 550 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 12.2 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:
- SMB
1SMB5930B-13 FAQ
1.How can I place an order for 1SMB5930B-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1SMB5930B-13 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 1SMB5930B-13 reliable?
The price and inventory of 1SMB5930B-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1SMB5930B-13 is usually 5 days.
3.What payment methods are accepted for 1SMB5930B-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1SMB5930B-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1SMB5930B-13?
1SMB5930B-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1SMB5930B-13 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 1SMB5930B-13?
For technical support, including 1SMB5930B-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1SMB5930B-13 requirements.
6.How does Aetrix verify that 1SMB5930B-13 is sourced from the original manufacturer or authorized distributors?
All 1SMB5930B-13 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 1SMB5930B-13 meets industry standards.
7.What is the process for return or replacement of 1SMB5930B-13?
All 1SMB5930B-13 units undergo pre-shipment inspection (PSI). If there is an issue with 1SMB5930B-13, 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 1SMB5930B-13 part is unused and in its original packaging.
Return procedure for 1SMB5930B-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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