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Microchip Technology 1N5362/TR8
- Part No.:
- 1N5362/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5362/TR8.pdf
- Description:
- DIODE ZENER 28V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:8,793
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Product details
Overview
1N5362/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 28 V, ±5% tolerance (B suffix), 6 Ω dynamic impedance at 50 mA test current, and maximum reverse leakage of 0.5 µA at 20.1 V. 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 1N5362/TR8 datasheet, 1N5362/TR8 pinout, 1N5362/TR8 application, or 1N5362/TR8 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (130 A), voltage regulation (ΔVZ = 3.9 V), and RoHS-compliant e3 packaging.
Technical Context
This device functions as a two-terminal voltage regulator operating in reverse breakdown. Its Zener voltage is specified at 28 V ±5% under 50 mA DC test current (IZT), with low dynamic impedance (6 Ω) ensuring stable regulation across load variations. The 25 °C/W thermal resistance enables reliable 5 W dissipation when leads are mounted with 10 mm length from body.
It exhibits minimal voltage drift versus temperature (–65 °C to +150 °C), withstands 8.3 ms half-sine surge currents up to 130 A, and maintains <0.5 µA reverse leakage at VR = 20.1 V - critical for low-power standby circuits and precision bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 28 V ±5% at IZT = 50 mA - defines precise regulation point for feedback loops and reference rails. |
| Power Dissipation | 5.0 W at TL = 25 °C with 10 mm lead length - sets maximum continuous DC power handling with standard mounting. |
| Dynamic Impedance (ZZ) | 6 Ω at IZT = 50 mA - determines output voltage stability under varying load current. |
| Reverse Leakage Current | 0.5 µA max at VR = 20.1 V - ensures negligible quiescent current in high-impedance sensing paths. |
| Surge Current (IZSM) | 130 A peak (8.3 ms half-sine) - supports transient overvoltage clamping without failure. |
| Voltage Regulation (ΔVZ) | 3.9 V - difference between VZ measured at 10% and 50% of IZM, indicating line regulation performance. |
| Thermal Resistance | 25 °C/W junction-to-lead - enables thermal design with predictable temperature rise under full load. |
Pinout & Package
Package: Axial-leaded T-18 plastic case per JEDEC DO-201AD; cathode indicated by band; RoHS-compliant matte-tin plating; weight 0.7 g; moisture sensitivity level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-voltage reference node | Connected to circuit ground or lower-potential rail during Zener operation. |
| Cathode | Zener breakdown terminal / regulated voltage output | Banded end; connected to unregulated input; delivers stable 28 V to load when reverse-biased. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard DO-201AD mechanical and electrical definitions for interchangeability. |
| ±5% voltage tolerance (B suffix) | Enables tighter regulation than ±10% or ±20% variants, reducing need for post-regulation trimming. |
| Low dynamic impedance (6 Ω) | Minimizes output voltage variation across 5–50 mA operating range, improving load regulation. |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - eliminates need for special ESD handling in assembly. |
| RoHS-compliant (e3 suffix) | Meets EU Directive 2011/65/EU with lead-free matte-tin plating and halogen-free epoxy body. |
Applications
| Industrial Power Supply Reference | Overvoltage Clamp in Telecom Line Cards |
|---|---|
Use Scenario: Stabilizing feedback voltage in 24 V DC-DC converter secondary-side regulation loop. IC Role / Device Role / Timing Role: Zener diode providing fixed 28 V reference to error amplifier input. Use Value: Maintains ±0.5% output voltage accuracy over –40 °C to +85 °C ambient due to tight 5% VZ tolerance and low ΔVZ. | Use Scenario: Protecting downstream PHY ICs from lightning-induced surges on -48 V telecom bus lines. IC Role / Device Role / Timing Role: Shunt clamp absorbing transient energy above 28 V threshold. Use Value: Withstands 130 A surge (8.3 ms) without degradation, preserving signal integrity during fault events. |
| Programmable Logic Controller (PLC) Input Protection | Test Equipment Voltage Calibration Standard |
Use Scenario: Limiting input voltage to analog-to-digital converter front-end in 24 V PLC I/O modules. IC Role / Device Role / Timing Role: Reverse-biased Zener clamping transient spikes before conditioning circuitry. Use Value: 0.5 µA leakage at 20.1 V prevents loading of high-impedance sensor inputs during normal operation. | Use Scenario: Serving as traceable 28 V reference in benchtop multimeter calibration fixtures. IC Role / Device Role / Timing Role: Precision voltage standard with known ±5% tolerance and low temperature coefficient. Use Value: Stable 28 V output across –65 °C to +150 °C enables calibration at multiple temperature points without drift compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5362B | No TR8 tape-and-reel packaging; bulk or ammo-pack only; identical electrical specs. | Not suitable for automated SMT placement; requires manual or vibration-feed insertion. | Select 1N5362/TR8 for pick-and-place compatibility; choose 1N5362B for prototyping or low-volume hand assembly. |
| SMBJ5362B | Surface-mount SMB package; same 28 V ±5% VZ; higher thermal resistance (junction-to-ambient ≈ 100 °C/W). | Requires PCB layout change; limited to ≤1.47 W continuous power without heatsinking. | Choose SMBJ5362B only when board space constraints prohibit axial-leaded components and power dissipation remains below 1.5 W. |
Compared with 1N5362B and SMBJ5362B, the 1N5362/TR8 uniquely combines tape-and-reel automation support, full 5 W axial-leaded power handling, and JEDEC-standardized mechanical dimensions - making it optimal for high-reliability industrial power supply manufacturing.
Availability
1N5362/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, telecom line card protection, and PLC input conditioning requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N5362/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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N53xxB series was designed specifically for robust, high-power voltage regulation in harsh-environment power systems where thermal stability, surge resilience, and long-term parametric consistency are critical.
FAQ
What is the Zener voltage tolerance of the 1N5362/TR8?
The 1N5362/TR8 has a Zener voltage tolerance of ±5%, denoted by the "B" suffix in its part number. This means its nominal 28 V regulation voltage falls within 26.6 V to 29.4 V at 50 mA test current and 25 °C lead temperature. This tolerance is tighter than the ±10% (A suffix) or ±20% (no suffix) variants, supporting more accurate voltage references in feedback networks.
Does the 1N5362/TR8 require dry packing for moisture sensitivity?
No, the 1N5362/TR8 does not require dry packing. It carries IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it is not hygroscopic and may be stored indefinitely at ambient conditions without baking or humidity-controlled packaging - simplifying inventory handling and reflow preparation.
What is the maximum surge current rating for the 1N5362/TR8?
The 1N5362/TR8 is rated for a maximum non-recurrent surge current (IZSM) of 130 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating applies under specified mounting conditions and enables reliable transient suppression in power line protection circuits without permanent parameter shift.
Can the 1N5362/TR8 be used in surface-mount designs?
No, the 1N5362/TR8 is an axial-leaded T-18 (DO-201AD) package and is not compatible with surface-mount assembly. For SMT implementation, use the functionally equivalent SMBJ5362B - a surface-mount variant in SMB package with identical 28 V ±5% Zener voltage but different thermal and mechanical characteristics.
What is the forward voltage specification for the 1N5362/TR8?
The 1N5362/TR8 has a maximum forward voltage (VF) of 1.2 V at 1.0 A forward current. This parameter is relevant when the device is operated in forward conduction mode (e.g., as a series diode or polarity protector), though its primary function is reverse-bias Zener regulation at 28 V.
1N5362/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:
- ±20%
- 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
1N5362/TR8 FAQ
1.How can I place an order for 1N5362/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5362/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 1N5362/TR8 reliable?
The price and inventory of 1N5362/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5362/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5362/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5362/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5362/TR8?
1N5362/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5362/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 1N5362/TR8?
For technical support, including 1N5362/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5362/TR8 requirements.
6.How does Aetrix verify that 1N5362/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5362/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 1N5362/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5362/TR8?
All 1N5362/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5362/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 1N5362/TR8 part is unused and in its original packaging.
Return procedure for 1N5362/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5362/TR8 Tags
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