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onsemi 1N5941BRLG
- Part No.:
- 1N5941BRLG
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N5941BRLG.pdf
- Description:
- DIODE ZENER 47V 3W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:9,768
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Product details
Overview
1N5941BRLG from onsemi is a 3 W, ±5% tolerance Zener diode in DO-41 axial package, with nominal Zener voltage of 47 V at 67 mA test current, maximum Zener impedance of 8.0 Ω at IZT, and surge rating of 98 W for 1 ms. It serves as a precision voltage reference or overvoltage clamp in DC power supply regulation circuits.
For engineers reviewing the 1N5941BRLG datasheet, pinout, applications, or equivalent options, key selection criteria include its 47 V nominal Zener voltage, 3 W steady-state power dissipation at TL = 75°C, low 8.0 Ω dynamic impedance, and Pb-free DO-41 package compatibility with automated tape-and-reel assembly.
Technical Context
This device uses silicon-oxide passivated junction technology to achieve stable Zener breakdown with tight ±5% voltage tolerance and Class 3 ESD robustness (>16 kV HBM). Its thermal design relies on lead-to-ambient conduction, with junction-to-lead thermal resistance dependent on lead length (e.g., 3/8″ mounting yields defined derating curves).
The 1N5941BRLG operates across −65°C to +200°C junction temperature range and maintains regulation under transient surges up to 98 W for 1 ms. Its reverse leakage is limited to 0.25 μA at VR = 35.8 V, and forward voltage is ≤1.5 V at 200 mA, supporting bidirectional protection and biasing roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 44.65–49.35 V (±5% tolerance at IZT = 67 mA; enables precise 47 V reference in feedback loops) |
| Power Dissipation (PD) | 3 W at TL = 75°C (supports continuous regulation in compact power supplies without heatsinking) |
| Zener Impedance (ZZT) | 8.0 Ω max at IZT = 67 mA (ensures low output impedance for stable voltage reference under load variation) |
| Surge Rating | 98 W @ 1 ms (withstands short-duration transients in industrial input stages without failure) |
| Reverse Leakage (IR) | 0.25 μA max @ VR = 35.8 V (minimizes standby current loss in battery-backed or low-power systems) |
| Package | DO-41 (axial-lead, void-free thermosetting plastic; compatible with standard through-hole and tape-and-reel pick-and-place) |
| ESD Rating | Class 3 (>16 kV HBM) (provides robust handling during manufacturing and field service) |
Pinout & Package
DO-41 axial package with cathode indicated by color band; leads are solderable per J-STD-001, rated for 260°C for 10 seconds at 1/16″ from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener breakdown anode | Connected to higher-potential node in reverse-bias regulation; polarity band must face positive rail |
| Anode | Zener breakdown cathode | Connected to lower-potential node (e.g., ground or return); completes reverse-bias path for voltage clamping |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Guarantees 44.65–49.35 V regulation window at 67 mA, reducing need for post-production trimming in mid-precision supplies |
| 3 W power rating in DO-41 footprint | Delivers 3× the power of conventional 1 W Zeners in same legacy axial package, enabling space-constrained upgrades |
| Surge capability: 98 W / 1 ms | Withstands common-line surges (e.g., IEC 61000-4-5 Level 3) without degradation when used with series current limiting |
| Pb-free, RoHS-compliant construction | Meets global environmental compliance requirements and supports lead-free reflow/soldering processes |
| −65°C to +200°C operating range | Supports deployment in automotive engine compartments, industrial motor drives, and outdoor power electronics |
Applications
| DC Power Supply Regulation | Overvoltage Protection Clamp |
|---|---|
|
Use Scenario: Stabilizing 48 V intermediate bus in telecom power modules with ±5% output tolerance requirement. IC Role / Device Role / Timing Role: Zener diode configured in shunt regulator topology, sinking excess current to maintain fixed 47 V reference. Use Value: Tight 47 V ±5% tolerance and 8.0 Ω ZZT ensure minimal output drift across line/load variations without active feedback compensation. |
Use Scenario: Protecting microcontroller I/O pins against 60 V transients induced by relay coil flyback in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional transient suppressor placed between I/O line and ground, clamping spikes above 47 V. Use Value: 98 W surge rating and 0.25 μA leakage at 35.8 V enable reliable clamping without loading the signal path during normal operation. |
| Reference Voltage Source | Field-Programmable Bias Generator |
|
Use Scenario: Providing stable 47 V bias for high-voltage op-amp comparators in solar inverter DC-link monitoring circuits. IC Role / Device Role / Timing Role: Precision voltage reference feeding comparator non-inverting input to trigger overvoltage shutdown at 47 V threshold. Use Value: Low 8.0 Ω dynamic impedance ensures minimal voltage shift under varying comparator input bias currents. |
Use Scenario: Configurable bias node in modular test equipment where multiple DUTs require different high-voltage bias points. IC Role / Device Role / Timing Role: One of several Zeners in a rotary-switch-selected reference bank, delivering selectable 47 V node for calibration circuits. Use Value: DO-41 axial form factor allows direct PCB-mounting in dense front-panel switch assemblies with manual wire-wrap or solder-lug access. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5941BRL | Same electrical specs and DO-41 package; differs only in Pb-free marking (no "G" suffix), indicating legacy SnPb termination | Not suitable for RoHS-compliant production; requires exemption documentation for lead-free programs | Select 1N5941BRLG for new designs requiring Pb-free compliance; use 1N5941BRL only for legacy repair or exempted applications |
| MMBZ5255B | SOT-23 surface-mount package; 47 V nominal, but rated for only 0.35 W and 10 Ω ZZT; no surge rating specified | Intended for low-power signal-level clamping, not power-stage regulation or surge suppression | Choose MMBZ5255B only for space-constrained PCBs where <0.5 W dissipation suffices; avoid for 3 W or surge-handling roles |
Compared with 1N5941BRLG, the 1N5941BRL offers identical performance but lacks RoHS compliance, while MMBZ5255B trades power handling and surge robustness for miniaturization-making 1N5941BRLG the sole option for 3 W, 47 V, Pb-free, surge-rated axial Zener regulation.
Availability
1N5941BRLG is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection clamp, reference voltage source, and field-programmable bias generator applications requiring stable component supply and full RoHS compliance.
Supply support for 1N5941BRLG 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 is a global semiconductor manufacturer specializing in energy-efficient, high-reliability silicon solutions for automotive, industrial, cloud, and IoT applications.
The 1N5941BRLG belongs to the 1N5913B Series of 3 W Zener regulators, designed specifically for cost-sensitive, high-volume power supply and protection circuits demanding tight voltage tolerance and robust surge immunity in legacy-compatible packaging.
FAQ
What is the Zener voltage tolerance of the 1N5941BRLG?
The 1N5941BRLG has a ±5% Zener voltage tolerance, meaning its reverse breakdown voltage is guaranteed between 44.65 V and 49.35 V when tested at 67 mA (IZT) and 30°C lead temperature. This tolerance is confirmed in the Electrical Characteristics table of the official onsemi datasheet (Rev. 9, July 2024) and applies to all units bearing the "B" suffix.
Is the 1N5941BRLG RoHS-compliant and Pb-free?
Yes, the 1N5941BRLG is RoHS-compliant and Pb-free. The "G" suffix in the part number explicitly denotes the Pb-free package, verified in the Ordering Information section of the onsemi datasheet. It meets JEDEC standards for lead-free soldering, with maximum lead temperature rated at 260°C for 10 seconds.
What is the maximum surge power rating for the 1N5941BRLG?
The 1N5941BRLG has a maximum non-repetitive surge power rating of 98 W for a 1 ms pulse, as specified in the Features section and Figure 3 of the onsemi datasheet. This rating is independent of steady-state power limits and reflects the device's ability to absorb short-duration transients without failure.
How does the 1N5941BRLG compare to the 1N5940BRLG in terms of Zener voltage?
The 1N5941BRLG has a nominal Zener voltage of 47 V (range: 44.65–49.35 V), whereas the 1N5940BRLG is rated for 43 V (range: 40.85–45.15 V). Both share identical power rating (3 W), package (DO-41), and tolerance (±5%), making them functionally interchangeable only when the 4 V difference aligns with system margin requirements.
What is the Zener impedance of the 1N5941BRLG at its test current?
The 1N5941BRLG has a maximum Zener impedance (ZZT) of 8.0 Ω measured at its specified test current of 67 mA (IZT) and 30°C lead temperature. This value is documented in the Electrical Characteristics table and defines the device's small-signal AC resistance during regulation, directly impacting output voltage stability under dynamic load conditions.
1N5941BRLG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 47 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 67 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 35.8 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
1N5941BRLG FAQ
1.How can I place an order for 1N5941BRLG through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5941BRLG 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 1N5941BRLG reliable?
The price and inventory of 1N5941BRLG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5941BRLG is usually 5 days.
3.What payment methods are accepted for 1N5941BRLG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5941BRLG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5941BRLG?
1N5941BRLG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5941BRLG 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 1N5941BRLG?
For technical support, including 1N5941BRLG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5941BRLG requirements.
6.How does Aetrix verify that 1N5941BRLG is sourced from the original manufacturer or authorized distributors?
All 1N5941BRLG 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 1N5941BRLG meets industry standards.
7.What is the process for return or replacement of 1N5941BRLG?
All 1N5941BRLG units undergo pre-shipment inspection (PSI). If there is an issue with 1N5941BRLG, 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 1N5941BRLG part is unused and in its original packaging.
Return procedure for 1N5941BRLG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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