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onsemi 1N5956BG
- Part No.:
- 1N5956BG
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N5956BG.pdf
- Description:
- DIODE ZENER 200V 3W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:627
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Product details
Overview
1N5956BG from onsemi is a 3 W, 200 V nominal Zener voltage regulator diode in DO-41 axial package, rated for ±5% tolerance, 1.9 Ω maximum Zener impedance at 1200 mA test current, and 8000 μA maximum reverse leakage at 152 V, used for precision voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the 1N5956BG datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, surge capability (98 W @ 1 ms), Pb-free compliance, and real-world design context for stable DC regulation under varying load and temperature conditions.
Technical Context
The 1N5956BG operates as a silicon-oxide passivated junction Zener diode optimized for steady-state voltage regulation at 200 V nominal with tight ±5% tolerance. Its 3 W power rating is specified at 75°C lead temperature with 3/8″ lead length, derating linearly to zero at 125°C.
It exhibits low dynamic impedance (1.9 Ω @ IZT = 1200 mA) and high surge robustness (98 W, 1 ms non-repetitive), enabling reliable clamping in transient-prone industrial power rails. Reverse leakage remains ≤8000 μA at VR = 152 V, supporting stable biasing in high-impedance reference networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 190–210 V (±5% tolerance at IZT = 1200 mA, TL = 30°C); ensures predictable regulation window across production lots. |
| Power Dissipation (PD) | 3 W @ TL = 75°C (3/8″ leads); supports continuous operation in compact, convection-cooled power supplies. |
| Zener Impedance (ZZT) | 1.9 Ω max @ IZT = 1200 mA; minimizes output voltage variation under dynamic load changes. |
| Reverse Leakage (IR) | ≤8000 μA @ VR = 152 V; maintains low quiescent current in high-impedance voltage divider references. |
| Surge Power | 98 W @ 1 ms (non-repetitive); withstands common AC line transients without degradation. |
| ESD Rating | Class 3 (>16 kV HBM); survives handling and board-level ESD events without parameter shift. |
| Operating Temp Range | −65°C to +200°C junction; suitable for under-hood automotive and industrial environments. |
Pinout & Package
DO-41 axial-leaded plastic package (Case 59, Style 1), void-free thermosetting material, cathode indicated by band. Mounting position unrestricted; leads solderable per J-STD-020 (260°C, 10 s at 1/16″ from case).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener breakdown terminal | Connected to regulated output node; reverse-biased during normal operation to clamp voltage at VZ. |
| Anode | Reference return path | Connected to system ground or lower-potential rail; completes current path for Zener conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Pb-free DO-41 package | RoHS-compliant construction with corrosion-resistant finish and solderable leads per J-STD-020. |
| ±5% Zener tolerance | Tight voltage binning enables accurate feedback loop setpoints without external trimming in SMPS designs. |
| Low ZZT at high IZT | 1.9 Ω impedance at 1200 mA ensures minimal regulation error under heavy load conditions. |
| High surge robustness | 98 W peak pulse rating protects downstream circuitry from 1 ms line transients without failure. |
| Wide operating temperature | −65°C to +200°C junction range supports deployment in extreme ambient environments. |
Applications
| Industrial Power Supply Feedback | Overvoltage Clamp Circuit |
|---|---|
|
Use Scenario: Regulating output voltage in isolated flyback converters using optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Zener reference element setting precise feedback threshold for TL431 or similar shunt regulator. Use Value: 200 V nominal Zener voltage provides margin above 170 V DC bus while maintaining tight ±5% regulation accuracy. |
Use Scenario: Protecting input stage of 24 V DC industrial controller against 100 V surge events. IC Role / Device Role / Timing Role: Passive clamping device limiting rail voltage to safe levels during transient overvoltage. Use Value: 98 W surge rating absorbs 1 ms pulses without degradation, preserving downstream MOSFET gate drivers. |
| High-Voltage Reference Source | Field Instrumentation Bias Network |
|
Use Scenario: Generating stable 200 V reference for analog front-end calibration in HV test equipment. IC Role / Device Role / Timing Role: Precision voltage reference node in resistive divider network feeding ADC reference input. Use Value: Low 1.9 Ω Zener impedance minimizes loading-induced drift when sourcing microampere-level bias currents. |
Use Scenario: Providing bias voltage for piezoelectric sensor signal conditioning in oil & gas downhole tools. IC Role / Device Role / Timing Role: High-temperature-stable voltage reference in 150°C-rated instrumentation modules. Use Value: −65°C to +200°C operating range ensures functionality during thermal cycling in harsh drilling environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5956BRLG | Pb-free tape-and-reel variant (6000 pcs/reel) vs. bulk box (2000 pcs); identical electrical specs and DO-41 package. | Designed for automated SMT placement; same thermal and electrical performance as 1N5956BG. | Select 1N5956BRLG for high-volume pick-and-place assembly; use 1N5956BG for prototyping or low-volume hand-soldered builds. |
| MMBZ5269BLT1G | Surface-mount SOT-23 package, 200 V nominal, but only 0.35 W rating and higher ZZT (120 Ω); not interchangeable in power-handling roles. | Suitable for low-power biasing only; cannot replace 1N5956BG in 3 W regulation or surge-clamp applications. | Choose MMBZ5269BLT1G only where board space is constrained and power dissipation remains below 350 mW. |
Compared with 1N5956BRLG, the 1N5956BG offers identical regulation performance in bulk packaging for manual or semi-automated assembly; compared with MMBZ5269BLT1G, it delivers 8.6× higher power handling and 63× lower dynamic impedance-critical for stable high-current reference and transient suppression.
Availability
1N5956BG is available at Aetrix Electronics and suitable for industrial power supplies, overvoltage protection circuits, high-voltage reference sources, and field instrumentation requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N5956BG 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 1N5913B Series-including 1N5956BG-is designed for robust, high-reliability Zener voltage regulation in demanding power conversion and protection applications, leveraging silicon-oxide passivated junction technology.
FAQ
What is the Zener voltage tolerance of the 1N5956BG?
The 1N5956BG has a guaranteed ±5% Zener voltage tolerance, with a nominal value of 200 V and a specified range of 190 V to 210 V at IZT = 1200 mA and lead temperature of 30°C. This tight tolerance enables accurate voltage setpoints in feedback networks without external trimming components, making the 1N5956BG suitable for precision regulation in industrial power supplies and test equipment.
Can the 1N5956BG be used in surface-mount designs?
No-the 1N5956BG uses a DO-41 axial-leaded package and is not compatible with surface-mount assembly processes. It requires through-hole mounting with 3/8″ lead length for rated 3 W power dissipation. For SMT alternatives, consider the MMBZ5269BLT1G (SOT-23), though it is limited to 0.35 W and higher impedance; the 1N5956BG itself must be mounted axially with appropriate lead bending and thermal relief.
What is the maximum reverse leakage current for the 1N5956BG?
The 1N5956BG has a maximum reverse leakage current (IR) of 8000 μA at VR = 152 V, measured at TL = 30°C. This specification ensures predictable bias current draw in high-impedance reference dividers and confirms stable operation in low-quiescent-current applications such as battery-powered instrumentation, where excessive leakage could compromise measurement accuracy or battery life.
How does thermal derating affect the 1N5956BG's power handling?
The 1N5956BG is rated for 3 W at TL = 75°C with 3/8″ leads, derating linearly at 24 mW/°C above that temperature until reaching zero at 125°C. This means at 100°C lead temperature, its usable power drops to 2.4 W. Proper heatsinking or airflow must be ensured in enclosed enclosures, and the 1N5956BG's junction-to-lead thermal resistance (θJL) must be considered when estimating actual junction temperature under sustained load.
Is the 1N5956BG RoHS compliant and halogen-free?
Yes-the "G" suffix in 1N5956BG explicitly denotes a Pb-free, RoHS-compliant package per JEDEC standards. The device uses void-free, transfer-molded thermosetting plastic with corrosion-resistant, solderable leads and meets J-STD-020 reflow profiles. While halogen content is not specified in the datasheet, onsemi's standard DO-41 Pb-free materials are typically halogen-free per IEC 61249-2-21; full compliance documentation is available upon request from Aetrix Electronics.
1N5956BG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 200 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 1200 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 152 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
1N5956BG FAQ
1.How can I place an order for 1N5956BG through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5956BG 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 1N5956BG reliable?
The price and inventory of 1N5956BG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5956BG is usually 5 days.
3.What payment methods are accepted for 1N5956BG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5956BG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5956BG?
1N5956BG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5956BG 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 1N5956BG?
For technical support, including 1N5956BG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5956BG requirements.
6.How does Aetrix verify that 1N5956BG is sourced from the original manufacturer or authorized distributors?
All 1N5956BG 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 1N5956BG meets industry standards.
7.What is the process for return or replacement of 1N5956BG?
All 1N5956BG units undergo pre-shipment inspection (PSI). If there is an issue with 1N5956BG, 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 1N5956BG part is unused and in its original packaging.
Return procedure for 1N5956BG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5956BG Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZT52C15-7-F
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BZX84C3V3LT1G
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MMSZ5245BS-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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SMAJ4744A-TP
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SMAZ12-13-F
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