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Microchip Technology 1N5362B/TR8
- Part No.:
- 1N5362B/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5362B/TR8.pdf
- Description:
- DIODE ZENER 28V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:2,439
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Product details
Overview
1N5362B/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 28 V, ±5% tolerance (B suffix), 6.0 Ω dynamic impedance at 50 mA test current, 130 mA maximum Zener current (IZM), and 0.60 V voltage regulation (ΔVZ) over 10–50% IZM range. 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 1N5362B/TR8 datasheet, 1N5362B/TR8 pinout, 1N5362B/TR8 application, or 1N5362B/TR8 equivalent, key selection criteria include its 28 V Zener voltage, 5 W steady-state power rating at TL < 25 °C, low 0.60 V regulation delta, 130 mA IZM under adequate heat sinking, and RoHS-compliant e3 marking with TR8 tape-and-reel packaging.
Technical Context
The 1N5362B/TR8 functions as a two-terminal voltage reference device operating in reverse breakdown mode. Its regulation performance is defined by Zener voltage (28 V), dynamic impedance (6.0 Ω at IZT = 50 mA), and voltage regulation (ΔVZ = 0.60 V between 10% and 50% IZM).
It features a T-18 axial package with tin-lead or RoHS-compliant matte-tin plating, cathode band polarity marking, and moisture sensitivity level 1 per J-STD-020B-no dry pack required. Thermal resistance is 25 °C/W junction-to-lead (3/8″ lead length) or 85 °C/W junction-to-ambient on FR4 board.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 28 V ±5% - precise regulation point for 24 V rail clamping and reference generation |
| Test Current (IZT) | 50 mA - standardized bias point for measuring VZ and ZZ |
| Dynamic Impedance (ZZ) | 6.0 Ω - low AC impedance ensures stable output under varying load currents |
| Max Zener Current (IZM) | 130 mA - maximum continuous DC current at TL < 25 °C with proper heatsinking |
| Voltage Regulation (ΔVZ) | 0.60 V - difference between VZ measured at 10% and 50% of IZM, indicating tight regulation linearity |
| Power Dissipation | 5.0 W at TL < 25 °C - defines thermal design margin for PCB layout and heatsink requirements |
| Operating Temperature | –65 °C to +150 °C - supports operation in harsh industrial and automotive under-hood environments |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case per JEDEC DO-204AL. Void-free UL94V-0 epoxy body; cathode indicated by colored band; leads solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / reverse-biased reference return | Connected to system ground or lower-potential node during Zener operation |
| Cathode | Zener breakdown terminal / regulated output node | Banded end; connected to voltage rail requiring clamping or reference; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N53xxB series | Industry-standard footprint and electrical behavior enabling drop-in replacement across multiple suppliers |
| ±5% Zener voltage tolerance (B suffix) | Guarantees 26.6–29.4 V regulation window without binning or calibration |
| Low ΔVZ = 0.60 V | Ensures minimal output voltage shift across 10–50% IZM load range, critical for stable references |
| RoHS-compliant e3 marking | Meets EU Directive 2011/65/EU; uses annealed matte-tin plating instead of lead-based finishes |
| Tape-and-reel packaging (TR8) | Standard EIA-296 format supporting automated SMT placement despite axial form factor |
Applications
| Industrial Power Supply Clamping | Programmable Logic Controller (PLC) Input Protection |
|---|---|
Use Scenario: Clamp transient spikes on 24 V DC input rails in DIN-rail mounted power distribution modules. IC Role / Device Role / Timing Role: Two-terminal shunt regulator absorbing surge energy above 28 V threshold. Use Value: Prevents damage to downstream DC-DC converters and microcontrollers by limiting rail voltage to ≤29.4 V under fault conditions. | Use Scenario: Protect digital input channels of modular PLC backplanes against field-wiring faults and ESD events. IC Role / Device Role / Timing Role: Standalone voltage clamp placed directly across input terminals before signal conditioning circuitry. Use Value: Maintains input logic thresholds within specification by holding voltage at 28 V ±5%, eliminating need for active TVS arrays. |
| Automotive Body Control Module Reference | Test Equipment Voltage Calibration Standard |
Use Scenario: Provide stable 28 V reference for analog sensor signal conditioning in 24 V vehicle systems. IC Role / Device Role / Timing Role: Passive Zener reference source feeding op-amp feedback networks and ADC bias circuits. Use Value: Delivers 0.60 V regulation delta across temperature and current variation, improving measurement accuracy over –40 °C to +125 °C. | Use Scenario: Serve as secondary voltage standard in benchtop multimeter calibration fixtures. IC Role / Device Role / Timing Role: Precision shunt reference operating at fixed 50 mA bias current in temperature-controlled enclosures. Use Value: Enables traceable 28 V verification with known ±5% tolerance and documented ΔVZ, reducing calibration uncertainty vs. generic Zeners. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5362BRLG (ON Semiconductor) | Same 28 V ±5%, 5 W rating, but TO-204AA (DO-41) package; 7.0 Ω ZZ at 50 mA | Slightly higher dynamic impedance; identical thermal derating curve and moisture sensitivity | Select when legacy ON Semi BOM compatibility or DO-41 footprint is required |
| MMBZ5262B (Diodes Inc.) | 28 V ±5%, but 0.5 W surface-mount SOD-123 package; 35 Ω ZZ at 20 mA | Not power-compatible: limited to low-current bias/reference use; unsuitable for 130 mA IZM loads | Choose only for space-constrained PCBs where full 5 W dissipation is unnecessary |
Compared with 1N5362B/TR8, the 1N5362BRLG offers identical regulation specs in a different axial package, while MMBZ5262B trades power capability for miniaturization-neither is pin-compatible, but both serve overlapping voltage-reference roles under differing thermal and layout constraints.
Availability
1N5362B/TR8 is available at Aetrix Electronics and suitable for industrial power supply clamping, PLC input protection, and automotive body control module reference applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N5362B/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 1N53xxB series was designed specifically for robust, high-power voltage regulation in mission-critical power systems where wide temperature operation, surge resilience, and JEDEC-standard interchangeability are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N5362B/TR8?
The 1N5362B/TR8 has a Zener voltage tolerance of ±5%, as indicated by the "B" suffix per Microsemi documentation. This means its measured VZ at 50 mA test current falls within 26.6 V to 29.4 V at TL = 25 °C. The 1N5362B/TR8 is not rated for tighter tolerances like ±1% or ±2%-those require C or D suffix variants.
Can the 1N5362B/TR8 be used without a heatsink?
The 1N5362B/TR8 can operate without an external heatsink only if power dissipation remains below 1.47 W-the rated steady-state power on FR4 board with specified copper pads. At full 5 W, it requires a 3/8″ lead length from body and thermal resistance ≤25 °C/W. Exceeding this without heatsinking risks exceeding the 150 °C max junction temperature. Derating curves in the 1N5362B/TR8 datasheet must be followed.
What does the "TR8" suffix mean in 1N5362B/TR8?
The "TR8" suffix in 1N5362B/TR8 indicates tape-and-reel packaging per EIA-296 standard, with 8 mm carrier tape width and standard orientation for automated placement equipment. It does not affect electrical specifications. The base 1N5362B device is unchanged; TR8 denotes logistics format only-same Zener voltage, power rating, and thermal characteristics as bulk or ammo-pack versions.
Is the 1N5362B/TR8 RoHS compliant?
Yes, the 1N5362B/TR8 is RoHS compliant, confirmed by the "e3" marking referenced in Microsemi's official documentation. It uses RoHS-compliant annealed matte-tin plating on leads and meets Directive 2011/65/EU. No lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE substances exceed allowable limits. Compliance applies to both the 1N5362B/TR8 device and its T-18 package materials.
How does voltage regulation (ΔVZ) impact circuit performance for the 1N5362B/TR8?
Voltage regulation (ΔVZ) of 0.60 V for the 1N5362B/TR8 quantifies the change in Zener voltage between 10% and 50% of its maximum current (IZM). A low ΔVZ ensures minimal output variation across load changes-critical for stable references in analog front-ends or precision clamping. This value is measured per JEDEC standard and directly affects accuracy in 1N5362B/TR8-based voltage-monitoring designs.
1N5362B/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):
- 28 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 6 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 20.1 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
1N5362B/TR8 FAQ
1.How can I place an order for 1N5362B/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5362B/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 1N5362B/TR8 reliable?
The price and inventory of 1N5362B/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5362B/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5362B/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5362B/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5362B/TR8?
1N5362B/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5362B/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 1N5362B/TR8?
For technical support, including 1N5362B/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5362B/TR8 requirements.
6.How does Aetrix verify that 1N5362B/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5362B/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 1N5362B/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5362B/TR8?
All 1N5362B/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5362B/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 1N5362B/TR8 part is unused and in its original packaging.
Return procedure for 1N5362B/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5362B/TR8 Tags
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