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onsemi 1N5377BRL
- Part No.:
- 1N5377BRL
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5377BRL.pdf
- Description:
- DIODE ZENER 91V 5W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:9,681
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Product details
Overview
1N5377BRL from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 91 V, ±5% tolerance, 15 Ω maximum zener impedance at 75 mA test current, and 2.2 μA maximum leakage current at 69.2 V. 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 1N5377BRL datasheet, pinout, applications, or equivalent options, this device serves as a high-voltage, low-leakage discrete regulator for industrial DC power conditioning, transient suppression, and reference stabilization where tight voltage tolerance and surge resilience are required.
Technical Context
The 1N5377BRL uses a silicon-oxide passivated junction in a void-free transfer-molded plastic package (Case 017AA), enabling robust environmental resistance and reliable solderability at 260 °C for 10 seconds. Its thermal design supports 25 °C/W junction-to-lead resistance at 3/8″ lead length, with derating above 25 °C at 40 mW/°C.
It exhibits a positive temperature coefficient (~0.085 mV/°C per volt, extrapolated from Figure 3 for 91 V), low dynamic impedance (15 Ω @ IZT = 75 mA), and high surge capability (760 A peak @ 8.3 ms) - characteristics critical for clamping high-energy transients while maintaining regulation accuracy under varying load and temperature conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 86.45–95.55 V (±5% tolerance; regulates at 91 V nominal under 75 mA DC bias) |
| Power Dissipation (PD) | 5 W steady-state (supports continuous regulation in compact PCB layouts without heatsinking up to 25 °C ambient) |
| Zener Impedance (ZZT) | 15 Ω max @ IZT = 75 mA (ensures minimal output voltage deviation under dynamic load changes) |
| Leakage Current (IR) | 2.2 μA max @ VR = 69.2 V (enables low quiescent current in high-impedance reference paths) |
| Surge Current (IRM) | 760 A peak @ 8.3 ms (withstands lightning-induced surges and inductive kickback in industrial power rails) |
| Junction Temp Range | −65 °C to +200 °C (supports operation in automotive engine bays and industrial motor drives) |
| ESD Rating | Class 3 (>16 kV HBM) (survives handling and board-level ESD events without parameter shift) |
Pinout & Package
Package: Axial-lead Surmetic™ 40 plastic case (Case 017AA), cathode indicated by band. Dimensions: 8.38–8.89 mm body length × 3.30–3.68 mm diameter; leads 25.4–31.75 mm long, 0.94–1.09 mm diameter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side of regulated circuit; defines polarity for reverse-bias operation |
| Cathode | Zener breakdown terminal / regulated output node | Connected to higher-potential rail; provides stable 91 V reference when reverse-biased above VZ |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Guarantees tight regulation window (86.45–95.55 V) without post-manufacture trimming |
| 15 Ω max zener impedance @ 75 mA | Minimizes output voltage variation under load steps in feedback networks |
| 2.2 μA max leakage @ 69.2 V | Preserves accuracy in high-resistance divider networks and low-power references |
| 760 A surge rating @ 8.3 ms | Clamps high-energy transients without failure in unprotected AC/DC front-ends |
| Pb-free axial package (RoHS compliant) | Enables direct replacement in legacy through-hole designs with no requalification needed |
Applications
| Industrial Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters using optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Zener reference element setting upper threshold for TL431-like shunt regulator control loop. Use Value: 91 V nominal breakdown enables precise 48 V or 24 V secondary-side regulation with minimal drift over temperature. |
Use Scenario: Protecting downstream DC bus components from input overvoltage during capacitor charging or rectifier faults. IC Role / Device Role / Timing Role: Passive crowbar element clamping rail voltage before MOSFET gate drivers or microcontrollers are damaged. Use Value: 760 A surge capacity absorbs 180 W transient energy (per datasheet), preventing latch-up in 48 V industrial systems. |
| High-Voltage Reference Source | Field Instrumentation Excitation |
Use Scenario: Providing stable excitation voltage for precision RTD or strain gauge bridges in process control sensors. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage reference node in ratiometric measurement circuits. Use Value: 2.2 μA leakage ensures <0.01% error contribution in 100 kΩ bridge arms, even at elevated ambient temperatures. |
Use Scenario: Biasing analog front-end amplifiers in portable gas analyzers requiring stable high-voltage excitation. IC Role / Device Role / Timing Role: Fixed-voltage source powering ionization chambers or photomultiplier tube dynodes. Use Value: −65 °C to +200 °C operating range allows deployment in unheated outdoor enclosures or high-temp process environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5377B (box-packaged) | Identical electrical specs and package; differs only in packaging (1000 units/box vs. 4000/tape & reel) | No functional difference; suitable for manual assembly or low-volume prototyping | Select 1N5377B for hand-soldered evaluation; 1N5377BRL for automated SMT line compatibility with axial tape feeders |
| BZX85C91 (Nexperia) | Same 91 V nominal, ±5%, but rated at 1.3 W only; 100 Ω ZZT vs. 15 Ω; 100 μA leakage @ 73 V | Limited to low-power references; cannot sustain 5 W dissipation or handle 760 A surges | Choose BZX85C91 only for space-constrained PCBs where 5 W rating is unnecessary and cost is primary driver |
Compared with 1N5377BRL, the 1N5377B offers identical performance in manual assembly contexts, while BZX85C91 trades significant power handling, impedance, and surge capability for smaller footprint - making 1N5377BRL the sole choice for industrial-grade 5 W regulation at 91 V.
Availability
1N5377BRL is available at Aetrix Electronics and suitable for industrial power supplies, overvoltage protection circuits, and high-voltage instrumentation requiring stable component supply, RoHS compliance, and proven surge resilience.
Supply support for 1N5377BRL 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 (Semiconductor Components Industries, LLC) is a global supplier of high-performance silicon solutions, specializing in energy-efficient power management, analog, sensing, and connectivity technologies.
The 1N53 Series belongs to onsemi's Surmetic™ discrete Zener portfolio, engineered for ruggedized voltage regulation in harsh-environment applications including industrial automation, automotive subsystems, and telecom infrastructure.
FAQ
What is the exact zener voltage tolerance and test condition for 1N5377BRL?
The 1N5377BRL has a guaranteed ±5% zener voltage tolerance, specified as 86.45 V (min) to 95.55 V (max) at IZT = 75 mA, TA = 25 °C. This tolerance reflects JEDEC-standard testing with 40 ±10 ms current application prior to measurement and mounting contacts located 3/8″–1/2″ from the diode body.
Can 1N5377BRL be used in surface-mount designs?
No - the 1N5377BRL is an axial-lead through-hole device in Case 017AA package and is not compatible with SMT reflow processes. It requires manual or wave soldering. For SMT alternatives, consider onsemi's NSZ series or NXP's BZX384-B91, though none match its 5 W rating and 760 A surge capability.
What is the maximum allowable DC zener current for 1N5377BRL at 91 V?
The maximum DC zener current (IZM) for 1N5377BRL is 760 mA, calculated as PD/VZ = 5 W / 91 V ≈ 0.055 A - but the datasheet specifies 760 mA based on worst-case VZ (86.45 V) and 5 W limit. Actual IZM must not exceed 5 W divided by the unit's measured VZ.
How does temperature affect the zener voltage of 1N5377BRL?
The 1N5377BRL exhibits a positive temperature coefficient of approximately +0.085 mV/°C per volt (inferred from Figure 3 for 91 V devices), resulting in ~+7.7 mV/°C total drift. At 100 °C junction temperature, VZ increases by ~580 mV versus 25 °C - a critical factor in precision reference designs requiring thermal compensation.
Is 1N5377BRL suitable for automotive under-hood applications?
Yes - the 1N5377BRL is rated for −65 °C to +200 °C operating temperature, exceeding AEC-Q101 requirements for under-hood use. Its 260 °C solderability, 16 kV HBM ESD rating, and 760 A surge capability make it appropriate for engine control module power rails and battery monitoring circuits where thermal and electrical stress are extreme.
1N5377BRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 91 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 75 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 69.2 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
1N5377BRL FAQ
1.How can I place an order for 1N5377BRL through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5377BRL 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 1N5377BRL reliable?
The price and inventory of 1N5377BRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5377BRL is usually 5 days.
3.What payment methods are accepted for 1N5377BRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5377BRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5377BRL?
1N5377BRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5377BRL 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 1N5377BRL?
For technical support, including 1N5377BRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5377BRL requirements.
6.How does Aetrix verify that 1N5377BRL is sourced from the original manufacturer or authorized distributors?
All 1N5377BRL 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 1N5377BRL meets industry standards.
7.What is the process for return or replacement of 1N5377BRL?
All 1N5377BRL units undergo pre-shipment inspection (PSI). If there is an issue with 1N5377BRL, 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 1N5377BRL part is unused and in its original packaging.
Return procedure for 1N5377BRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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