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onsemi 1N5365B
- Part No.:
- 1N5365B
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5365B.pdf
- Description:
- DIODE ZENER 36V 5W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:9,769
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Product details
Overview
1N5365B from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 36 V, ±5% tolerance, maximum zener impedance of 30 Ω at 11 mA test current, and surge rating of 132 A at 8.3 ms. 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 1N5365B datasheet, pinout, applications, or equivalent options, key selection criteria include its 36 V nominal regulation voltage, 5 W steady-state power dissipation, 30 Ω dynamic impedance at IZT = 11 mA, low leakage current (≤0.65 mA at VR = 27.4 V), and robust 180 W surge capability - all critical for stable regulation under transient load or line variations.
Technical Context
The 1N5365B employs a silicon-oxide passivated junction to achieve tight voltage tolerance (±5%), low temperature coefficient (≈+0.093 %/°C above 10 V), and high ESD immunity (>16 kV HBM). Its thermal design relies on axial lead conduction, with junction-to-lead thermal resistance of 25 °C/W at 3/8″ lead length.
It delivers regulated voltage via reverse-biased operation, with specified test conditions including 40 ±10 ms current application prior to measurement and mounting contact positioned 3/8″–1/2″ from the diode body. Regulation stability is validated at both 10% and 50% of IZM (160 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 36 V - precise regulation point for mid-range DC rails (e.g., 36 V industrial sensors or telecom bias supplies) |
| Zener Voltage Tolerance | ±5% - ensures predictable clamping within ±1.8 V across production units without trimming |
| Max. Steady-State Power | 5 W @ TL = 25°C - supports continuous shunt regulation up to ~139 mA at 36 V |
| Zener Impedance | 30 Ω @ IZT = 11 mA - low dynamic resistance maintains regulation accuracy under varying load currents |
| Surge Current Rating | 132 A @ 8.3 ms - withstands common AC line transients and inductive switch-off spikes |
| Reverse Leakage | ≤0.65 mA @ VR = 27.4 V - minimizes quiescent power loss in high-impedance bias networks |
| Junction-to-Lead Rθ | 25 °C/W - enables thermal management using PCB copper pour or heatsinked leads |
Pinout & Package
Package: Axial-lead, transfer-molded plastic (Case 017AA), cathode indicated by band. Dimensions: 8.38–8.89 mm length × 3.30–3.68 mm diameter; lead diameter uncontrolled, max 1.27 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node in shunt configuration | Connected to system ground or lower-potential rail; carries forward current during non-regulation states |
| Cathode | Zener regulation terminal / Output reference node | Connected to regulated voltage node; reverse-biased to maintain 36 V across load during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Silicon-oxide passivated junction | Enables ±5% VZ tolerance and stable long-term regulation without parameter drift |
| ESD rating >16 kV (HBM) | Survives handling and board-level ESD events without degradation in regulation performance |
| Surge rating up to 180 W @ 8.3 ms | Clamps repetitive or single-event transients without failure in unprotected input stages |
| Pb-free plastic package | Complies with RoHS while maintaining corrosion-resistant finish and solderability at 260°C |
| Guaranteed limits on six electrical parameters | Ensures full specification compliance - VZ, ZZT, ZZK, IZK, IR, and IZM - per unit |
Applications
| Industrial Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing output voltage in isolated flyback or forward converter feedback loops where optocoupler-coupled error amplifiers require precise reference. IC Role / Device Role / Timing Role: Shunt voltage reference connected between secondary-side error amplifier input and ground, setting regulation threshold. Use Value: 36 V nominal VZ provides headroom for 24 V systems with margin; ±5% tolerance eliminates need for external trimming in cost-sensitive designs. |
Use Scenario: Protecting downstream ICs (e.g., microcontrollers, ADCs) from voltage surges exceeding 36 V on 24–30 V DC bus lines. IC Role / Device Role / Timing Role: Passive clamp device placed between protected rail and ground, conducting only when transient exceeds 36 V. Use Value: 132 A surge rating handles 8.3 ms transients per IEC 61000-4-5 Level 3; low ZZT (30 Ω) ensures fast response and minimal overshoot. |
| Programmable Voltage Reference | DC Bias Generator |
Use Scenario: Generating stable analog reference voltages for sensor excitation or DAC output buffering in industrial instrumentation. IC Role / Device Role / Timing Role: Precision shunt reference in conjunction with series resistor and op-amp buffer stage. Use Value: Low 30 Ω impedance and <0.65 mA leakage enable accurate 36 V reference with ≤0.1% error over temperature in buffered configurations. |
Use Scenario: Establishing fixed bias points for RF power amplifier stages or linear regulator pass devices operating near 36 V. IC Role / Device Role / Timing Role: DC voltage source providing stable gate/base bias or collector/drain supply reference. Use Value: 5 W power rating allows direct use without heat sinking in low-duty-cycle bias networks; axial package simplifies through-hole mounting on RF layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5365UR-1 | Same 36 V nominal VZ and ±5% tolerance, but in surface-mount DO-213AB (GLASS) package; higher thermal resistance (40 °C/W) | Used where PCB space is constrained and reflow assembly is required; unsuitable for high-power dissipation without thermal pads | Select 1N5365UR-1 only when SMT layout mandates and thermal derating to ≤2.5 W is acceptable. |
| BZX85C36 | 36 V Zener, ±5%, but rated at 1.3 W only; higher ZZT (≥50 Ω); no surge rating specified beyond 100 A (10 ms) | Targeted for low-power signal conditioning or logic-level clamping, not primary power rail regulation | Choose BZX85C36 only for sub-500 mW applications where cost and size outweigh power-handling requirements. |
Compared with 1N5365UR-1 and BZX85C36, the 1N5365B uniquely combines 5 W power handling, 30 Ω low-impedance regulation, and 132 A surge capability in an axial package - making it the only option among the three suitable for sustained shunt regulation in industrial 24–48 V systems.
Availability
1N5365B is available at Aetrix Electronics and suitable for industrial power supplies, overvoltage protection circuits, programmable reference designs, and DC bias generation requiring stable component supply and long-lifecycle support.
Supply support for 1N5365B 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, analog, sensing, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The 1N53 Series was designed as a high-reliability, 5 W Zener family for ruggedized voltage regulation in harsh environments - emphasizing tight tolerance, surge resilience, and Pb-free manufacturability.
FAQ
What is the nominal zener voltage and tolerance of the 1N5365B?
The 1N5365B has a nominal zener voltage of 36 V with a tolerance of ±5%, meaning its actual regulation voltage falls between 34.2 V and 37.8 V at IZT = 11 mA and TA = 25°C. This tolerance is guaranteed per JEDEC standard and applies specifically to the "B" suffix variant documented in the onsemi 1N53 Series datasheet Rev. 19.
Can the 1N5365B be used in surface-mount designs?
No - the 1N5365B uses an axial-lead, through-hole package (Case 017AA) and is not compatible with SMT assembly. For surface-mount equivalents with identical 36 V regulation, consider the 1N5365UR-1 in DO-213AB glass package, though it is rated for only 2.5 W continuous power due to higher thermal resistance.
What is the maximum DC zener current (IZM) for the 1N5365B?
The maximum DC zener current for the 1N5365B is 160 mA, derived from its 5 W power rating divided by the maximum zener voltage (37.8 V). This value is explicitly listed in the Electrical Characteristics table on page 3 of the onsemi datasheet and assumes TL = 25°C with 3/8″ lead length.
How does the 1N5365B handle transient surge conditions?
The 1N5365B supports a peak non-repetitive surge current of 132 A at 8.3 ms pulse width, corresponding to 180 W surge power. This capability is validated per Figure 5 in the datasheet and enables reliable clamping of common power-line transients without degradation, provided mounting follows specified lead-length guidelines.
Is the 1N5365B RoHS compliant and lead-free?
Yes - the 1N5365B is offered in a Pb-free plastic package, indicated by the "G" suffix in ordering codes (e.g., 1N5365BG). The datasheet confirms RoHS compliance and specifies soldering at 260°C for 10 seconds at 1/16″ from the case, with corrosion-resistant, readily solderable leads.
1N5365B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 11 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 27.4 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
1N5365B FAQ
1.How can I place an order for 1N5365B through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5365B 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 1N5365B reliable?
The price and inventory of 1N5365B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5365B is usually 5 days.
3.What payment methods are accepted for 1N5365B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5365B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5365B?
1N5365B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5365B 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 1N5365B?
For technical support, including 1N5365B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5365B requirements.
6.How does Aetrix verify that 1N5365B is sourced from the original manufacturer or authorized distributors?
All 1N5365B 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 1N5365B meets industry standards.
7.What is the process for return or replacement of 1N5365B?
All 1N5365B units undergo pre-shipment inspection (PSI). If there is an issue with 1N5365B, 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 1N5365B part is unused and in its original packaging.
Return procedure for 1N5365B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5365B 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
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