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Microchip Technology 1N5365C/TR8
- Part No.:
- 1N5365C/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5365C/TR8.pdf
- Description:
- DIODE ZENER 36V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:8,970
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Product details
Overview
1N5365C/TR8 from Microsemi is a silicon 5 W axial-leaded Zener diode with nominal regulation voltage of 36 V, ±2% tolerance (C suffix), 30 mA test current (IZT), 11 Ω dynamic impedance (ZZ), and maximum reverse current of 0.5 μA at 27.4 V (VR). It operates from –65°C to +150°C and is used for precision voltage reference and overvoltage protection in industrial power supplies.
For engineers reviewing the 1N5365C/TR8 datasheet, 1N5365C/TR8 pinout, 1N5365C/TR8 application, or 1N5365C/TR8 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (160 A), voltage regulation (ΔVZ = 3.3 V), and RoHS-compliant (e3) tape-and-reel packaging (TR8).
Technical Context
This device functions as a two-terminal voltage regulator diode operating in reverse breakdown, where stable Zener voltage is maintained across a wide range of reverse currents (10–50% of IZM = 160 mA). Its low dynamic impedance (11 Ω) and tight ±2% tolerance ensure minimal voltage drift under load and temperature variation.
The 1N5365C/TR8 uses a void-free thermosetting epoxy T-18 package with tin-lead or matte-tin plating, cathode band polarity marking, and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity-no dry pack required. Thermal performance is specified at 3/8″ (10 mm) lead length from body (25 °C/W) or on FR4 board (85 °C/W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V ±2% - precise regulation point for feedback loops and reference circuits |
| Test Current (IZT) | 30 mA - standardized bias point for measuring VZ and ZZ |
| Dynamic Impedance (ZZ) | 11 Ω - low AC resistance ensures stable output under varying load current |
| Max Reverse Current (IR) | 0.5 μA at VR = 27.4 V - confirms sharp knee and low leakage below regulation threshold |
| Max Regulator Current (IZM) | 160 mA - maximum continuous DC current at TL = 25°C with adequate heatsinking |
| Surge Current (IZSM) | 160 A (8.3 ms half-sine) - withstands transient overvoltage events without failure |
| Voltage Regulation (ΔVZ) | 3.3 V - difference between VZ measured at 10% and 50% of IZM, indicating regulation linearity |
Pinout & Package
Package: Axial-leaded T-18 plastic encapsulated case per JEDEC DO-204AL standard; void-free UL94V-0 epoxy body; cathode indicated by colored band; leads solderable per MIL-STD-750 Method 2026; weight 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-voltage side in reverse-bias operation | Connected to system ground or lower-potential node when used as shunt regulator |
| Cathode | Zener breakdown terminal / high-voltage side in reverse-bias operation | Marked with band; connected to input rail to clamp voltage at 36 V ±2% |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables tighter feedback loop control vs. ±5% (B) or ±10% (A) variants |
| JEDEC-registered 1N53xx series | Guarantees mechanical and electrical interchangeability across qualified suppliers |
| RoHS-compliant (e3) and tape-and-reel (TR8) | Supports automated SMT placement and environmental compliance for industrial OEMs |
| Moisture sensitivity Level 1 | Eliminates baking requirement prior to reflow, reducing assembly cost and risk |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and ESD protection circuitry in end equipment |
Applications
| Industrial Power Supply Feedback | Overvoltage Clamp in Telecom Line Cards |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters via optocoupler feedback network. IC Role / Device Role / Timing Role: Shunt reference diode providing stable 36 V reference to TL431 or similar error amplifier. Use Value: ±2% tolerance ensures output accuracy within ±1.5% over line/load/temperature, meeting EN 61000-3-2 requirements. |
Use Scenario: Protecting downstream PHY ICs from lightning-induced surges on -48 V DC distribution lines. IC Role / Device Role / Timing Role: Primary shunt clamping element absorbing transient energy before TVS activation. Use Value: 160 A surge rating and 3.3 V ΔVZ allow clamping at ≤39.3 V during 8.3 ms transients, preserving signal integrity. |
| Programmable Voltage Reference | DC Link Monitoring in Motor Drives |
Use Scenario: Generating precision bias voltages for op-amp comparators in analog front-ends. IC Role / Device Role / Timing Role: Stable 36 V reference source for resistor-divider scaling of higher bus voltages. Use Value: Low 11 Ω ZZ minimizes loading error when driving 10 kΩ input impedances, maintaining reference accuracy. |
Use Scenario: Scaling 300–400 V DC link voltage for ADC input in 3-phase inverter gate drivers. IC Role / Device Role / Timing Role: Zener-based voltage divider top element ensuring safe ADC input <5 V. Use Value: 150°C max operating temperature and 25 °C/W thermal resistance support reliable operation near power modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5365B/TR8 | ±5% VZ tolerance (vs. ±2% for 1N5365C/TR8); otherwise identical electrical specs and package | Acceptable where system-level calibration compensates for initial tolerance; lower cost | Select 1N5365B/TR8 for cost-sensitive designs with post-assembly trimming or software calibration. |
| MMSZ5245C-TP | Surface-mount SOD-123 package (vs. axial T-18); 36 V ±2%, but rated at only 500 mW (not 5 W) | Not suitable for high-power dissipation; limited to low-current bias/reference roles | Choose MMSZ5245C-TP only for space-constrained PCBs with IZ < 10 mA and no surge exposure. |
Compared with 1N5365B/TR8, the 1N5365C/TR8 delivers tighter initial accuracy critical for open-loop regulation; versus MMSZ5245C-TP, it provides 10× higher power handling and robust surge immunity essential for industrial power rails.
Availability
1N5365C/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, telecom line card protection, programmable voltage references, and DC link monitoring requiring stable component supply and long-term obsolescence management.
Supply support for 1N5365C/TR8 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
Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, RF, and timing solutions for aerospace, defense, and industrial markets.
The 1N53xx series was designed for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal robustness, surge resilience, and JEDEC-standardized interchangeability.
FAQ
What is the Zener voltage tolerance of the 1N5365C/TR8?
The 1N5365C/TR8 has a Zener voltage tolerance of ±2%, designated by the "C" suffix per Microsemi's datasheet. This means its nominal 36 V regulation point falls within 35.28 V to 36.72 V at 30 mA test current and 25°C lead temperature. This tighter tolerance supports higher-accuracy feedback networks compared to ±5% (B suffix) or ±10% (A suffix) variants of the same 1N5365 family.
Does the 1N5365C/TR8 require dry packing before reflow soldering?
No, the 1N5365C/TR8 does not require dry packing. It carries IPC/JEDEC J-STD-020B moisture sensitivity Level 1 classification, confirmed in Microsemi's datasheet. This allows indefinite floor life at ≤30°C/60% RH and eliminates pre-bake steps prior to standard reflow profiles, simplifying manufacturing for Aetrix Electronics' industrial customers.
What is the maximum continuous current the 1N5365C/TR8 can handle?
The 1N5365C/TR8 supports a maximum continuous Zener current (IZM) of 160 mA when operated at 25°C lead temperature (TL) with adequate heat sinking-typically achieved using ≥3/8″ (10 mm) lead length from the epoxy body. At ambient temperature on FR4 board, derated steady-state power drops to 1.47 W, limiting usable current to approximately 41 mA without additional copper area or forced cooling.
How is polarity marked on the 1N5365C/TR8?
The 1N5365C/TR8 uses a cathode band marking: a single colored band (typically black or dark gray) encircling the cathode end of the axial T-18 package. Per datasheet polarity definition, the diode must be operated with the banded end positive relative to the opposite (anode) end when functioning as a reverse-biased Zener regulator. This marking is consistent across all 1N53xx series devices.
Is the 1N5365C/TR8 RoHS compliant?
Yes, the 1N5365C/TR8 is RoHS compliant, indicated by the "e3" suffix in its full ordering designation (1N5365C/TR8 e3). Microsemi's datasheet explicitly states RoHS compliance for this variant, with annealed matte-tin plating on leads and halogen-free epoxy encapsulation meeting EU Directive 2011/65/EU requirements.
1N5365C/TR8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 11 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 25.9 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- T-18
1N5365C/TR8 FAQ
1.How can I place an order for 1N5365C/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5365C/TR8 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 1N5365C/TR8 reliable?
The price and inventory of 1N5365C/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5365C/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5365C/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5365C/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5365C/TR8?
1N5365C/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5365C/TR8 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 1N5365C/TR8?
For technical support, including 1N5365C/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5365C/TR8 requirements.
6.How does Aetrix verify that 1N5365C/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5365C/TR8 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 1N5365C/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5365C/TR8?
All 1N5365C/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5365C/TR8, 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 1N5365C/TR8 part is unused and in its original packaging.
Return procedure for 1N5365C/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5365C/TR8 Tags
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