My Inquiry
My Account
onsemi 1N5955BRLG
- Part No.:
- 1N5955BRLG
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N5955BRLG.pdf
- Description:
- DIODE ZENER 180V 3W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:2,416
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5955BRLG from onsemi is a 3 W, ±5% tolerance Zener diode with nominal zener voltage of 180 V, maximum zener impedance of 2.1 Ω at 900 mA test current, and surge rating of 98 W @ 1 ms. It operates from −65 °C to +200 °C and is used for overvoltage protection and precision voltage reference in high-voltage DC power supplies.
For engineers reviewing the 1N5955BRLG datasheet, pinout, applications, or equivalent options, key selection criteria include its 180 V nominal zener voltage, 3 W steady-state power dissipation at 75 °C lead temperature, DO-41 axial package compatibility, and Class 3 (>16 kV) ESD rating per HBM.
Technical Context
The 1N5955BRLG employs a silicon-oxide passivated junction for stable voltage regulation under varying load and temperature conditions. Its thermal design relies on lead-to-ambient conduction, with junction-to-lead transient thermal resistance dependent on pulse width and duty cycle per Figure 2.
Zener voltage is guaranteed at TL = 30 °C ±1 °C measured 3/8″ from the case after 90 seconds; impedance values (ZZT, ZZK) are derived using 10% rms AC superimposed on DC test current, per ON Semiconductor's standardized methodology.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 180 V - precise clamping threshold for high-voltage rail stabilization |
| Zener Tolerance | ±5% - ensures predictable regulation window across production lots |
| Max Steady-State Power | 3 W @ TL = 75 °C - defines continuous dissipation limit with 3/8″ lead length |
| Zener Impedance | 2.1 Ω @ IZT = 900 mA - low dynamic resistance enables tight regulation under load variation |
| Surge Rating | 98 W @ 1 ms - supports transient overvoltage suppression without failure |
| ESD Rating | Class 3 (>16 kV) HBM - robust handling in automated assembly and field environments |
| Operating Temperature | −65 °C to +200 °C - suitable for under-hood automotive and industrial power systems |
Pinout & Package
Package: DO-41 axial-leaded plastic case (Case 59), void-free transfer-molded thermosetting material, cathode indicated by band. Lead temperature max 260 °C for 10 s at 1/16″ from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener breakdown terminal | Connected to higher-potential node; reverse-biased operation establishes regulated voltage drop |
| Anode | Reference/return terminal | Connected to circuit ground or lower-potential rail; completes bias path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Pb-Free DO-41 package | Complies with RoHS; identical footprint and solderability to legacy 1 W packages |
| Surge-rated construction | Withstands 98 W single-pulse transients (1 ms), enabling use in unfiltered line-input stages |
| Low leakage at VR | ≤0.25 μA @ VR = 136.8 V - minimizes standby current in high-impedance bias networks |
| Stable high-voltage regulation | Temperature coefficient optimized for 100–200 V range (Figure 9); <±0.05%/°C typical drift |
| Multi-parameter testing | Up to six electrical parameters guaranteed per unit - ensures batch consistency for safety-critical designs |
Applications
| Industrial Power Supply Protection | High-Voltage Reference Source |
|---|---|
Use Scenario: Clamp transient spikes on 150–200 V DC bus lines in motor drives and PLC power modules. IC Role / Device Role / Timing Role: Standalone voltage clamp protecting downstream regulators and gate drivers from overvoltage events. Use Value: 98 W surge rating and 180 V nominal clamping enable direct placement across bulk capacitors without series limiting resistors. |
Use Scenario: Provide stable 180 V reference for analog front-end calibration in HV battery monitoring systems. IC Role / Device Role / Timing Role: Precision shunt reference establishing known voltage for ADC input scaling and fault detection thresholds. Use Value: ±5% tolerance and low 2.1 Ω impedance ensure <0.5% total error contribution at 900 mA operating point. |
| Telecom Line Interface Protection | Test Equipment Voltage Standard |
Use Scenario: Protect line interface ICs from lightning-induced surges on -48 V telecom distribution boards upgraded to support PoH (Power over Hybrid). IC Role / Device Role / Timing Role: Primary overvoltage suppressor in series with gas discharge tube (GDT) secondary protection stage. Use Value: Class 3 ESD rating (>16 kV HBM) and −65 °C to +200 °C operation ensure reliability in outdoor cabinet deployments. |
Use Scenario: Serve as traceable 180 V calibration standard in benchtop HV power supply testers and insulation resistance meters. IC Role / Device Role / Timing Role: Stable, factory-trimmed shunt reference used to verify output accuracy of programmable HV sources. Use Value: Tight 171–189 V min/max zener range and guaranteed multi-parameter limits support metrology-grade verification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5955BRL | Same electrical specs; non-Pb-free variant (no "G" suffix) | Identical performance; not compliant with RoHS or J-STD-020 reflow requirements | Select only if Pb-free compliance is not required and legacy inventory is available |
| SMF180A | Surface-mount SOD-123 package; 1.0 W rating; 180 V nominal; 100 ns response | Better high-frequency surge response but lower power handling; requires PCB layout change | Prefer for space-constrained, high-density designs where 3 W dissipation is not needed |
Compared with 1N5955BRLG, the 1N5955BRL offers identical regulation performance without RoHS compliance, while SMF180A trades axial through-hole robustness and 3 W capability for compact SMT integration and faster transient response-making it suitable only when board area and surge energy are secondary to mounting density.
Availability
1N5955BRLG is available at Aetrix Electronics and suitable for industrial power supply protection, high-voltage reference sourcing, and telecom line interface protection requiring stable component supply, long-term lifecycle assurance, and full traceability.
Supply support for 1N5955BRLG 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The 1N5913B Series-including 1N5955BRLG-is designed specifically for high-reliability, high-voltage Zener regulation in harsh-environment power systems where stability, surge resilience, and long-term parametric consistency are critical.
FAQ
What is the nominal zener voltage and tolerance of the 1N5955BRLG?
The 1N5955BRLG has a nominal zener voltage of 180 V with a guaranteed tolerance of ±5%, corresponding to a minimum of 171 V and maximum of 189 V at IZT = 900 mA and TL = 30 °C. This tolerance is marked by the "B" suffix and verified per ON Semiconductor's production test flow across up to six electrical parameters.
What package type and lead configuration does the 1N5955BRLG use?
The 1N5955BRLG uses a DO-41 axial-leaded plastic package (Case 59, Style 1), with cathode identified by a painted band. Leads are corrosion-resistant and solderable, rated for 260 °C for 10 seconds at 1/16″ from the case. It is supplied in tape-and-reel format (6000 units per reel) with Pb-free compliance ("G" suffix).
How much power can the 1N5955BRLG dissipate continuously under standard conditions?
The 1N5955BRLG 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 derates linearly at 24 mW/°C. At ambient temperature (TA) = 50 °C, the rating drops to 1 W with 6.67 mW/°C derating-confirming its suitability for thermally constrained high-voltage rails.
What is the maximum surge power rating for the 1N5955BRLG and at what pulse width?
The 1N5955BRLG has a maximum non-repetitive surge power rating of 98 W at a pulse width of 1 ms, as specified in Figure 3 of the datasheet. This rating applies to rectangular, non-repetitive waveforms with TJ = 25 °C prior to the pulse and must not be exceeded to avoid degradation due to localized current crowding effects.
Does the 1N5955BRLG meet RoHS requirements and what does the "G" suffix indicate?
Yes, the "G" suffix in 1N5955BRLG explicitly denotes a Pb-free package compliant with RoHS Directive 2011/65/EU. The device uses lead-free terminations and conforms to onsemi's Pb-free strategy, with full documentation available in the Soldering and Mounting Techniques Reference Manual (SOLDERRM/D).
1N5955BRLG 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):
- 180 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 900 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 136.8 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
1N5955BRLG FAQ
1.How can I place an order for 1N5955BRLG through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5955BRLG 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 1N5955BRLG reliable?
The price and inventory of 1N5955BRLG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5955BRLG is usually 5 days.
3.What payment methods are accepted for 1N5955BRLG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5955BRLG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5955BRLG?
1N5955BRLG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5955BRLG 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 1N5955BRLG?
For technical support, including 1N5955BRLG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5955BRLG requirements.
6.How does Aetrix verify that 1N5955BRLG is sourced from the original manufacturer or authorized distributors?
All 1N5955BRLG 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 1N5955BRLG meets industry standards.
7.What is the process for return or replacement of 1N5955BRLG?
All 1N5955BRLG units undergo pre-shipment inspection (PSI). If there is an issue with 1N5955BRLG, 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 1N5955BRLG part is unused and in its original packaging.
Return procedure for 1N5955BRLG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5955BRLG Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
