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onsemi 1N5354BG
- Part No.:
- 1N5354BG
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5354BG.pdf
- Description:
- DIODE ZENER 17V 5W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:4,595
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Product details
Overview
1N5354BG from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 17 V, ±5% tolerance, 70 Ω maximum zener impedance at 2.5 mA test current, and 0.35 mA maximum leakage current at 12.9 V reverse bias. It operates as a precision voltage reference or shunt regulator in DC power supply feedback paths, overvoltage protection circuits, and voltage-clamping applications.
For engineers reviewing the 1N5354BG datasheet, pinout, applications, or equivalent options, key selection criteria include its 17 V regulation point, 75 A maximum surge current (8.3 ms), 25 °C/W junction-to-lead thermal resistance, Pb-free Surmetic 40 package, and compatibility with standard through-hole soldering at 260 °C for 10 seconds.
Technical Context
This device uses silicon-oxide passivated junction technology to achieve tight voltage tolerance and stable regulation under varying load and temperature conditions. Its zener voltage exhibits a positive temperature coefficient above 10 V, with typical TC of +5.8 mV/°C at 17 V, enabling predictable drift compensation in reference designs.
The 1N5354BG delivers 5 W steady-state power dissipation at 25 °C lead temperature, derating linearly above that point at 40 mW/°C. It supports non-repetitive surge currents up to 75 A for 8.3 ms pulses and maintains low dynamic impedance (70 Ω) at IZT = 2.5 mA, ensuring minimal regulation error across operating current range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16.15–17.85 V (±5% tolerance at IZT = 2.5 mA; defines precise clamping threshold) |
| Max Power Dissipation | 5 W at TL = 25 °C (supports robust shunt regulation without heatsink in low-duty-cycle applications) |
| Zener Impedance (ZZT) | 70 Ω max at IZT = 2.5 mA (ensures <175 mV output variation for ±1 mA load change) |
| Leakage Current (IR) | 0.35 mA max at VR = 12.9 V (minimizes standby power loss in high-impedance bias networks) |
| Surge Current (IRM) | 75 A peak for 8.3 ms (withstands transient overvoltage events per IEC 61000-4-5 Level 3) |
| Junction-to-Lead RθJL | 25 °C/W (enables thermal modeling of junction temperature rise from measured lead temperature) |
| ESD Rating | Class 3 (>16 kV HBM) (survives handling and board assembly without external protection) |
Pinout & Package
1N5354BG is housed in an axial-lead Surmetic 40 plastic package (Case 017AA), void-free transfer-molded thermosetting material with corrosion-resistant leads and cathode polarity band marking. Lead length is standardized at 3/8 inch for thermal rating compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side of regulated circuit; establishes reference ground for shunt operation |
| Cathode | Zener breakdown terminal / Regulation output node | Connected to higher-potential rail; clamps voltage to 17 V when reverse-biased beyond breakdown |
Key Features
| Feature | Design Value |
|---|---|
| Silicon-oxide passivated junction | Enables ±5% VZ tolerance and long-term stability under thermal cycling and humidity stress |
| Pb-free Surmetic 40 package | Complies with RoHS Directive 2011/65/EU and supports lead-free reflow and wave soldering processes |
| 16 kV HBM ESD rating | Eliminates need for external ESD protection in board-level handling and automated assembly |
| 180 W surge capability | Withstands 8.3 ms transients up to 180 W without degradation-exceeds IEC 61000-4-5 requirements |
| Corrosion-resistant finish | Ensures solderability and reliability in humid, industrial, or outdoor environments over 10+ year service life |
Applications
| Industrial Power Supply Feedback | Automotive Overvoltage Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters using optocoupler feedback loop. IC Role / Device Role / Timing Role: Shunt reference providing stable 17 V reference to TL431 or optocoupler LED anode. Use Value: Tight ±5% VZ tolerance and low 70 Ω ZZT ensure <±1% output regulation accuracy across line/load/temperature. |
Use Scenario: Protecting 12 V automotive ECUs against load-dump transients (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Passive clamp absorbing energy during 120 V/400 ms surges on battery rail. Use Value: 75 A surge rating and 180 W pulse capability limit clamped voltage to ≤22 V, within IC absolute max ratings. |
| Programmable Voltage Reference | LED Current Regulation |
Use Scenario: Setting precise reference voltage for DAC output buffers or ADC input scaling networks. IC Role / Device Role / Timing Role: Low-drift 17 V reference source replacing multi-resistor divider in precision analog signal chains. Use Value: Positive TC of +5.8 mV/°C enables predictable temperature compensation when paired with NTC thermistors. |
Use Scenario: Stabilizing forward current in high-brightness LED strings powered from unregulated 24 V supplies. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant voltage across current-setting resistor in constant-current topology. Use Value: 0.35 mA leakage at 12.9 V ensures <1% current error at 350 mA LED drive, even at elevated ambient temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5354B | Same electrical specs but SnPb-plated leads (non-Pb-free); identical VZ, ZZT, IR, and surge rating | Not compliant with RoHS or China RoHS; unsuitable for export to EU/China markets | Select 1N5354BG for new designs requiring Pb-free compliance; use 1N5354B only for legacy repair or non-regulated regions |
| MMSZ5246BS-TP | Surface-mount SOD-123 package; 16–17.6 V VZ range; 1 W power rating; 30 Ω ZZT at 20 mA | Lower power handling (1 W vs. 5 W); requires PCB layout change; better high-frequency impedance | Choose MMSZ5246BS-TP for space-constrained, high-density boards where 1 W dissipation suffices and thermal mass is limited |
Compared with 1N5354B, the 1N5354BG offers identical regulation performance with Pb-free compliance; compared with MMSZ5246BS-TP, it trades surface-mount convenience for 5× higher power handling and axial-lead mechanical robustness in high-surge environments.
Availability
1N5354BG is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, programmable instrumentation, and LED driver circuits requiring stable component supply with full RoHS compliance and traceable sourcing.
Supply support for 1N5354BG 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, sensor, and logic solutions for automotive, industrial, cloud, and consumer markets.
The 1N53 Series belongs to onsemi's discrete Zener regulator portfolio, designed specifically for high-reliability shunt regulation in harsh-environment power systems where precision, surge resilience, and long-term stability are critical.
FAQ
What is the exact zener voltage range for 1N5354BG at 25°C?
The 1N5354BG has a guaranteed zener voltage range of 16.15 V to 17.85 V at 25°C with test current IZT = 2.5 mA. This ±5% tolerance is specified per JEDEC standard and confirmed in onsemi's Rev. 19 datasheet, page 3. The nominal value is 17 V, and all units meet this range without binning.
Can 1N5354BG be used in surface-mount designs?
No, the 1N5354BG is exclusively an axial-lead through-hole device in Surmetic 40 (Case 017AA) package. It cannot be mounted on SMT pads. For surface-mount equivalents, consider the MMSZ5246BS-TP (SOD-123, 17 V) or NZ9F17VTA (SOD-923, 17 V), both requiring PCB redesign and derated power handling.
What is the maximum allowable surge current for 1N5354BG and under what conditions?
The 1N5354BG supports a maximum non-repetitive surge current of 75 A for 8.3 ms square-wave pulses at 25°C ambient, as specified in the Electrical Characteristics table (page 3). This rating assumes proper lead mounting (3/8″ from case) and applies only to single-event transients-not repetitive duty cycles.
How does temperature affect the zener voltage of 1N5354BG?
The 1N5354BG exhibits a positive temperature coefficient of approximately +5.8 mV/°C at its 17 V operating point, as shown in Figure 3 of the datasheet. This means VZ increases by ~5.8 mV per degree Celsius rise in junction temperature-critical for precision reference designs requiring thermal compensation.
Is 1N5354BG compatible with lead-free soldering processes?
Yes, the 'G' suffix explicitly denotes Pb-free construction. The 1N5354BG is qualified for lead-free wave and reflow soldering with maximum lead temperature of 260°C at 1/16 inch from case for 10 seconds, per datasheet Mechanical Characteristics section. No special preheat or cooling profiles are required beyond J-STD-020 standards.
1N5354BG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 17 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 12.9 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
1N5354BG FAQ
1.How can I place an order for 1N5354BG through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5354BG 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 1N5354BG reliable?
The price and inventory of 1N5354BG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5354BG is usually 5 days.
3.What payment methods are accepted for 1N5354BG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5354BG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5354BG?
1N5354BG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5354BG 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 1N5354BG?
For technical support, including 1N5354BG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5354BG requirements.
6.How does Aetrix verify that 1N5354BG is sourced from the original manufacturer or authorized distributors?
All 1N5354BG 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 1N5354BG meets industry standards.
7.What is the process for return or replacement of 1N5354BG?
All 1N5354BG units undergo pre-shipment inspection (PSI). If there is an issue with 1N5354BG, 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 1N5354BG part is unused and in its original packaging.
Return procedure for 1N5354BG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5354BG Tags
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MM5Z5V1ST1G
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