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onsemi 1N5941BRL
- Part No.:
- 1N5941BRL
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N5941BRL.pdf
- Description:
- DIODE ZENER 47V 3W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,593
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Product details
Overview
1N5941BRL from onsemi is a 3 W, 47 V ±5% Zener diode in DO-41 (Case 59) axial-leaded plastic package, designed for precision voltage regulation and transient suppression in DC power rails, reference supplies, and overvoltage protection circuits. It delivers stable reverse breakdown at 47 V with 8.0 Ω dynamic impedance at 67 mA test current, supports 98 W surge rating at 1 ms, and operates across −65°C to +200°C.
For engineers reviewing the 1N5941BRL datasheet, pinout, applications, or equivalent options, key selection criteria include its 47 V nominal Zener voltage, 3 W steady-state power dissipation at 75°C lead temperature, Class 3 ESD robustness (>16 kV HBM), and Pb-free tape-and-reel packaging (6000 units/reel).
Technical Context
This device uses silicon-oxide passivated junction technology to achieve tight ±5% Zener voltage tolerance and low leakage (<0.25 μA at 35.8 V). Its thermal design relies on lead-to-ambient conduction, with junction-to-lead thermal resistance of ~30°C/W at 3/8″ lead length, enabling reliable operation under pulsed and continuous DC stress.
The 1N5941BRL exhibits a positive temperature coefficient above ~5 V (≈+2.5 mV/°C at 47 V), requiring thermal derating above 75°C ambient or lead temperature. Its 1000 mA maximum DC Zener current and 98 W non-repetitive surge capability support robust overvoltage clamping in industrial power supplies and automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 44.65 V (min) to 49.35 V (max) at 67 mA - ensures precise 47 V regulation with ±5% tolerance for stable reference generation |
| Zener Impedance (ZZT) | 8.0 Ω max at IZT = 67 mA - enables low-output-impedance voltage clamping with minimal regulation error under load variation |
| Max DC Zener Current (IZM) | 1000 mA - defines absolute upper current limit before thermal runaway; used to size series resistor in shunt regulator designs |
| Surge Power Rating | 98 W @ 1 ms - supports transient overvoltage suppression without failure during short-duration line spikes or ESD events |
| ESD Rating | Class 3 (>16 kV) per Human Body Model - provides intrinsic system-level ESD immunity without external protection components |
| Operating Temperature | −65°C to +200°C - enables deployment in under-hood automotive, industrial motor drives, and high-temp power conversion environments |
| Package | DO-41 (Case 59), axial-leaded plastic - compatible with standard through-hole PCB assembly and manual prototyping; cathode marked by band |
Pinout & Package
Package: DO-41 (Case 59), axial-leaded thermosetting plastic housing with corrosion-resistant, solderable leads. Cathode indicated by color band. Mounting position unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener breakdown terminal | Connected to higher-potential node in shunt configuration; reverse-biased to regulate voltage at anode side |
| Anode | Reference ground/reference return | Typically tied to system ground or low-side rail; forms regulated output node when cathode is biased above it |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Guarantees tight regulation window (44.65–49.35 V) without post-production trimming, reducing BOM and calibration cost |
| 98 W surge rating at 1 ms | Withstands common power-line transients (e.g., IEC 61000-4-5 Level 3) without degradation or parameter shift |
| Class 3 ESD immunity (>16 kV HBM) | Eliminates need for external ESD protection in board-level input/output stages, simplifying layout and saving board space |
| Pb-free tape-and-reel packaging | Enables automated SMT-compatible placement via axial-tape feeders; 6000 units/reel supports high-volume production |
| Void-free transfer-molded case | Ensures mechanical integrity and moisture resistance in humid or chemically aggressive environments (IPC/JEDEC J-STD-020 compliant) |
Applications
| Industrial Power Supply Regulation | Automotive ECU Reference Voltage |
|---|---|
Use Scenario: Stabilizing 48 V intermediate bus in programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: Shunt voltage regulator maintaining fixed 47 V reference for ADC bias and op-amp supply rails. Use Value: Delivers <0.5% output drift over −40°C to +85°C ambient due to predictable +2.5 mV/°C tempco and low ZZT. |
Use Scenario: Providing stable reference for engine control unit (ECU) sensor signal conditioning circuitry. IC Role / Device Role / Timing Role: Precision voltage clamp protecting analog front-end inputs from battery dump transients (ISO 7637-2 Pulse 5a). Use Value: Survives 98 W/1 ms surges without parameter shift, ensuring long-term reliability in 12 V/24 V dual-battery systems. |
| Telecom Line Card Overvoltage Protection | Medical Equipment Power Sequencing |
Use Scenario: Clamping secondary-side DC outputs in PoE-powered network switches. IC Role / Device Role / Timing Role: Transient voltage suppressor limiting rail excursions during hot-swap insertion or cable fault events. Use Value: Low 8.0 Ω ZZT minimizes clamping voltage overshoot (<1.5 V above VZ) during 100 A surge tests. |
Use Scenario: Enabling controlled power-up sequencing in diagnostic imaging subsystems with multiple isolated DC/DC converters. IC Role / Device Role / Timing Role: Voltage supervisor trigger element activated when 47 V auxiliary rail reaches regulation threshold. Use Value: Tight ±5% VZ tolerance ensures repeatable turn-on timing across production lots and temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5941B (tube, 2000 units/box) | Identical electrical specs and DO-41 package; differs only in packaging format (bulk vs. tape-and-reel) | No functional difference; selected when manual assembly or low-volume prototyping is preferred | Choose 1N5941BRL for automated production; choose 1N5941B for bench evaluation or small-batch builds |
| BZX85C47 (Nexperia) | Same 47 V ±5%, 1.3 W rating (vs. 3 W), DO-41 package, but lower surge rating (40 W @ 1 ms) and no Class 3 ESD rating | Suitable only for low-power, non-safety-critical applications where 3 W dissipation or 98 W surge is not required | Select BZX85C47 only if thermal budget and surge exposure are strictly limited; verify derating curves for TL > 50°C |
Compared with 1N5941BRL, the 1N5941B offers identical performance in bulk form but lacks tape-and-reel automation support, while BZX85C47 trades 3× lower power handling and reduced surge/ESD robustness for cost-sensitive, low-stress applications.
Availability
1N5941BRL is available at Aetrix Electronics and suitable for industrial power supplies, automotive electronic control units, telecom line cards, and medical equipment requiring stable component supply with full traceability and lifecycle management.
Supply support for 1N5941BRL 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 management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 1N59xxB series is part of onsemi's legacy Zener regulator portfolio, engineered for high-reliability voltage reference and transient suppression in harsh-environment applications demanding long-term stability and robust surge immunity.
FAQ
What is the Zener voltage tolerance of the 1N5941BRL?
The 1N5941BRL has a guaranteed Zener voltage tolerance of ±5% at 67 mA test current, resulting in a specified range of 44.65 V (minimum) to 49.35 V (maximum) at 30°C lead temperature. This tolerance is fully tested and binned during manufacturing, and applies across the full operating temperature range of −65°C to +200°C.
Can the 1N5941BRL be used in surface-mount designs?
No - the 1N5941BRL is packaged exclusively in the axial-leaded DO-41 (Case 59) format and is intended for through-hole mounting. It is not compatible with standard SMT reflow processes. For surface-mount equivalents, consider onsemi's NSZ series or other SOD-123/SMA packages with comparable 47 V ratings, but note differences in power rating and thermal performance.
What is the maximum steady-state power dissipation for the 1N5941BRL?
The 1N5941BRL is rated for 3 W steady-state power dissipation at a lead temperature (TL) of 75°C with 3/8″ lead length. Above 75°C, it must be derated linearly at 24 mW/°C. At 50°C ambient, the derated limit drops to 1 W with 6.67 mW/°C derating above that point - critical for thermal design in enclosed enclosures or high-density layouts.
Does the 1N5941BRL have a specified temperature coefficient?
Yes - the 1N5941BRL exhibits a positive temperature coefficient of approximately +2.5 mV/°C at its nominal 47 V Zener voltage, as confirmed by onsemi's Figure 6. This value enables predictable voltage drift modeling in temperature-varying applications, such as automotive under-hood sensors or industrial process controllers operating across wide ambient ranges.
Is the 1N5941BRL RoHS-compliant and halogen-free?
Yes - the 1N5941BRL carries the "G" suffix indicating a Pb-free, RoHS-compliant construction per EU Directive 2011/65/EU. Its transfer-molded plastic case and solderable leads meet IPC/JEDEC J-STD-020 moisture sensitivity level (MSL) 1 requirements and contain no halogenated flame retardants, satisfying IPC-4101D/126 specifications.
1N5941BRL 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
1N5941BRL FAQ
1.How can I place an order for 1N5941BRL through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5941BRL 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 1N5941BRL reliable?
The price and inventory of 1N5941BRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5941BRL is usually 5 days.
3.What payment methods are accepted for 1N5941BRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5941BRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5941BRL?
1N5941BRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5941BRL 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 1N5941BRL?
For technical support, including 1N5941BRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5941BRL requirements.
6.How does Aetrix verify that 1N5941BRL is sourced from the original manufacturer or authorized distributors?
All 1N5941BRL 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 1N5941BRL meets industry standards.
7.What is the process for return or replacement of 1N5941BRL?
All 1N5941BRL units undergo pre-shipment inspection (PSI). If there is an issue with 1N5941BRL, 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 1N5941BRL part is unused and in its original packaging.
Return procedure for 1N5941BRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5941BRL Tags
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BZX84C3V3LT1G
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MM5Z5V1ST1G
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