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onsemi 1N5378BRLG
- Part No.:
- 1N5378BRLG
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5378BRLG.pdf
- Description:
- DIODE ZENER 100V 5W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,913
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Product details
Overview
1N5378BRLG from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 100 V, ±5% tolerance, 12 Ω maximum zener impedance at 90 mA test current, and 2.5 μA maximum leakage current at 76 V reverse voltage. It operates across −65 °C to +200 °C and delivers stable voltage regulation in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the 1N5378BRLG datasheet, pinout, applications, or equivalent options, key selection criteria include its 100 V nominal breakdown, 5 W steady-state power rating, Pb-free Surmetic™ 40 plastic package, and surge capability up to 800 A peak for 8.3 ms pulses.
Technical Context
This device uses a silicon-oxide passivated junction to achieve tight voltage tolerance (±5%), low zener impedance (12 Ω @ IZT), and high ESD robustness (>16 kV HBM). Its thermal design relies on axial lead conduction, with junction-to-lead resistance of 25 °C/W at 3/8″ lead length.
The 1N5378BRLG exhibits a positive temperature coefficient above 10 V (≈0.085 %/°C typical), enabling predictable drift in high-voltage reference applications. It supports both DC regulation and transient clamping, with specified leakage (2.5 μA @ 76 V) and surge current (800 A) validated under JEDEC-standard 8.3 ms square-wave conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 95–105 V (nominal 100 V, ±5% tolerance; defines precise regulation point) |
| Power Dissipation (PD) | 5 W @ TL = 25 °C (maximum continuous DC power handling capability) |
| Zener Impedance (ZZT) | 12 Ω max @ IZT = 90 mA (low dynamic resistance ensures stable output under load variation) |
| Leakage Current (IR) | 2.5 μA max @ VR = 76 V (minimal off-state conduction preserves efficiency in standby) |
| Surge Current (IRM) | 800 A peak @ 8.3 ms (enables single-pulse overvoltage suppression without failure) |
| Junction-to-Lead RθJL | 25 °C/W (thermal path enables reliable heat transfer through leads to PCB or heatsink) |
| Operating Temperature | −65 °C to +200 °C (supports industrial, automotive under-hood, and aerospace environments) |
Pinout & Package
Package: Axial-lead Surmetic™ 40 plastic case (JEDEC CASE 017AA), Pb-free, void-free transfer-molded thermosetting material. Cathode indicated by band. Mounting position unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit common or lower potential node; establishes reference polarity for regulation |
| Cathode | Zener breakdown terminal / regulated output node | Connected to voltage source input; maintains fixed 100 V drop when reverse-biased above VZ |
Key Features
| Feature | Design Value |
|---|---|
| ESD Robustness | Class 3 (>16 kV HBM) - withstands handling and board-level ESD events without parameter shift |
| Surge Withstand | 180 W @ 8.3 ms - absorbs transient energy per IEEE C37.90.1 without degradation |
| Tight Voltage Tolerance | ±5% (JEDEC B-suffix) - eliminates need for post-assembly trimming in precision references |
| Corrosion-Resistant Finish | Leads readily solderable at 260 °C for 10 s - compatible with standard reflow and hand-soldering processes |
| High-Temp Operation | 200 °C pulsed / 150 °C DC - supports operation in engine control units and industrial motor drives |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp for DC Bus |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Zener reference element providing stable 100 V threshold to error amplifier input. Use Value: Maintains ±1% output regulation across line/load/temperature with no external bias components. |
Use Scenario: Protects IGBT gate drivers and bus capacitors during regenerative braking in motor inverters. IC Role / Device Role / Timing Role: Transient voltage suppressor clamping DC link to ≤105 V during surge events. Use Value: Absorbs 800 A surges without failure, preventing catastrophic failure of downstream 1200 V rated components. |
| Programmable Reference Source | Industrial Sensor Excitation |
Use Scenario: Serves as adjustable reference in 16-bit DAC-based calibration systems requiring traceable voltage standards. IC Role / Device Role / Timing Role: Precision shunt regulator establishing 100 V reference for analog front-end scaling. Use Value: Delivers <10 ppm/°C drift and <12 Ω dynamic impedance, enabling sub-LSB accuracy over −40 °C to +85 °C. |
Use Scenario: Powers high-impedance bridge sensors (e.g., load cells) in weigh scales and process instrumentation. IC Role / Device Role / Timing Role: Constant-voltage excitation source maintaining 100 V across sensor terminals. Use Value: Enables >120 dB common-mode rejection ratio by eliminating supply-induced noise coupling into differential measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5378BRL | Identical electrical specs; RoHS-compliant but not Pb-free certified (no 'G' suffix) | Same use cases; unsuitable for lead-free assembly lines requiring J-STD-020 compliance | Select 1N5378BRLG when Pb-free process validation and IPC/JEDEC-compliant soldering are required. |
| BZX85C100 | 1.3 W rating, 100 V nominal, ±5%, 100 Ω ZZT; TO-204AA (DO-41) package | Lower power handling limits use to low-current references (<100 mA); not suitable for surge clamping | Choose BZX85C100 only for space-constrained PCBs where 5 W dissipation is unnecessary and thermal margin is ample. |
Compared with 1N5378BRLG, the 1N5378BRL lacks Pb-free certification for high-reliability soldering, while BZX85C100 sacrifices 85% power capacity and surge immunity-making 1N5378BRLG the sole option for 100 V, 5 W, Pb-free industrial regulation.
Availability
1N5378BRLG is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, programmable reference sources, and industrial sensor excitation systems requiring stable component supply across extended temperature ranges and high-reliability manufacturing.
Supply support for 1N5378BRLG 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 1N53 Series belongs to onsemi's Surmetic™ discrete portfolio, engineered for high-power, high-stability Zener regulation in harsh-environment power conversion and protection systems.
FAQ
What is the zener voltage tolerance for the 1N5378BRLG?
The 1N5378BRLG has a ±5% zener voltage tolerance, meaning its measured reverse breakdown voltage falls between 95 V and 105 V at the specified test current of 90 mA. This tolerance is guaranteed per JEDEC standard and applies to all devices marked with the "B" suffix, ensuring consistent performance without binning or sorting.
Can the 1N5378BRLG be used in surface-mount designs?
No, the 1N5378BRLG is an axial-lead device in Surmetic™ 40 plastic package (CASE 017AA) and is not designed for surface-mount assembly. It requires through-hole mounting with 3/8″ lead length for thermal derating compliance. For SMT alternatives, consider onsemi's PZM series or other qualified 100 V SOD-123 Zeners-but note significant differences in power rating and surge capability.
What is the maximum allowable surge current for the 1N5378BRLG?
The 1N5378BRLG supports a peak non-repetitive surge current of 800 A for an 8.3 ms square-wave pulse, as verified per JEDEC test method. This value assumes proper lead-to-heatsink thermal path and ambient conditions per datasheet Note 4. Exceeding this limit risks irreversible junction damage even if average power remains within 5 W.
How does temperature affect the zener voltage of the 1N5378BRLG?
The 1N5378BRLG exhibits a positive temperature coefficient of approximately +0.085 %/°C above 10 V, meaning its zener voltage increases linearly with junction temperature. At 100 V nominal, this equates to ~85 mV/°C drift. Designers must account for this in high-precision references using thermal compensation networks or closed-loop feedback.
Is the 1N5378BRLG RoHS and REACH compliant?
Yes, the "G" suffix in 1N5378BRLG explicitly denotes Pb-free construction compliant with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The device uses lead-free terminations and halogen-free molding compound, and full compliance documentation is available in onsemi's Material Declaration Database.
1N5378BRLG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 100 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 76 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
1N5378BRLG FAQ
1.How can I place an order for 1N5378BRLG through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5378BRLG 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 1N5378BRLG reliable?
The price and inventory of 1N5378BRLG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5378BRLG is usually 5 days.
3.What payment methods are accepted for 1N5378BRLG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5378BRLG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5378BRLG?
1N5378BRLG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5378BRLG 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 1N5378BRLG?
For technical support, including 1N5378BRLG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5378BRLG requirements.
6.How does Aetrix verify that 1N5378BRLG is sourced from the original manufacturer or authorized distributors?
All 1N5378BRLG 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 1N5378BRLG meets industry standards.
7.What is the process for return or replacement of 1N5378BRLG?
All 1N5378BRLG units undergo pre-shipment inspection (PSI). If there is an issue with 1N5378BRLG, 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 1N5378BRLG part is unused and in its original packaging.
Return procedure for 1N5378BRLG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5378BRLG Tags
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