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Microchip Technology 1N5362BE3/TR8
- Part No.:
- 1N5362BE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5362BE3/TR8.pdf
- Description:
- DIODE ZENER 28V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:2,801
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Product details
Overview
1N5362BE3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 28 V, ±5% tolerance (B suffix), 50 mA test current, 6.0 Ω maximum dynamic impedance at IZT, and 130 A peak surge current rating. It operates from –65 °C to +150 °C and is used for precision voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the 1N5362BE3/TR8 datasheet, 1N5362BE3/TR8 pinout, 1N5362BE3/TR8 application, or 1N5362BE3/TR8 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), steady-state power derating on FR4, reverse leakage at VR = 21.2 V, and RoHS-compliant matte-tin plating per MIL-STD-750.
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 dynamic impedance measured at 1 kHz AC superimposed on IZT. Voltage regulation (ΔVZ) is defined as the difference between voltages measured at 10% and 50% of IZM (130 mA).
Thermal design relies on lead-length-dependent junction-to-lead resistance (25 °C/W at 3/8″ lead length) and board-mounted junction-to-ambient resistance (85 °C/W on FR4 with 4 mm² copper pads). Polarity is marked by cathode band; operation requires banded end positive relative to anode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 28 V ±5% at 50 mA - defines stable regulation point for feedback networks |
| Power Dissipation | 5.0 W at TL < 25 °C - requires heat sinking above ambient for full-power operation |
| Dynamic Impedance (ZZ) | 6.0 Ω max at IZT - low impedance ensures minimal voltage shift under load variation |
| Max Reverse Current (IR) | 0.5 μA at VR = 21.2 V - confirms sharp knee and low leakage near regulation threshold |
| Surge Current (IZSM) | 130 A (8.3 ms half-sine) - supports transient overvoltage clamping without failure |
| Thermal Resistance | 25 °C/W junction-to-lead - enables thermal modeling using lead temperature as proxy for junction temp |
| Operating Temp Range | –65 °C to +150 °C - suitable for industrial and automotive under-hood environments |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case (Void-free UL94V-0 epoxy), cathode indicated by band, RoHS-compliant matte-tin plated leads solderable per MIL-STD-750 Method 2026, weight 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to system ground or lower-potential rail in shunt regulator configuration |
| Cathode (banded end) | Regulated output node | Provides stable 28 V reference when reverse-biased; connects to feedback divider or protected circuit input |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 5 W Zener | Industry-standard footprint and electrical behavior for drop-in replacement across suppliers |
| ±5% voltage tolerance (B suffix) | Enables tighter feedback loop control vs. ±10% or ±20% variants without premium cost |
| Moisture sensitivity Level 1 | No dry pack required - simplifies handling and eliminates bake-out before assembly |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD handling during manufacturing and field service |
| e3 RoHS-compliant plating | Meets global environmental compliance without sacrificing solderability or reliability |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Provides precise 28 V reference in optocoupler-coupled feedback path of isolated 48 V DC-DC converters. IC Role / Device Role / Timing Role: Shunt voltage regulator establishing error amplifier reference point. Use Value: Maintains ±1% output regulation across line/load/temperature with 6.0 Ω ZZ limiting feedback voltage drift. | Use Scenario: Supplies stable bias voltage to bridge-based pressure transducers in factory automation systems. IC Role / Device Role / Timing Role: Precision analog reference source for ratiometric sensor excitation. Use Value: Delivers 28 V ±5% with <0.5 μA leakage at 21.2 V, minimizing offset error in millivolt-level sensor outputs. |
| Overvoltage Clamp Protection | Programmable Logic Controller Input Protection |
Use Scenario: Clamps 48 V bus transients to safe levels before entering 3.3 V microcontroller I/O pins via series resistor. IC Role / Device Role / Timing Role: Transient voltage suppressor operating in Zener breakdown during surge events. Use Value: Absorbs 130 A (8.3 ms) surge energy without degradation, protecting downstream logic from >30 V spikes. | Use Scenario: Protects 24 V digital input channels in PLC backplanes against field-wiring faults and inductive kickback. IC Role / Device Role / Timing Role: Standby shunt regulator that conducts only during overvoltage fault conditions. Use Value: Withstands repeated 28 V clamping events while maintaining <0.5 μA leakage at normal operating voltage (24 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5362BRLG | Same 28 V ±5%, 5 W rating, but in bulk packaging (no tape/reel); identical electrical specs and T-18 package | No TR8 tape-and-reel format - unsuitable for automated SMT placement | Select 1N5362BE3/TR8 for pick-and-place assembly; choose 1N5362BRLG for manual or wave-solder prototyping |
| MMBZ5262BS | Surface-mount SOT-23 package, same 28 V ±5%, but rated for 0.2 W only and 100 mA IZM | Limited to low-power signal-level regulation; cannot replace 5 W dissipation requirement | Use MMBZ5262BS only in space-constrained, low-current applications where thermal mass is sufficient |
Compared with 1N5362BRLG and MMBZ5262BS, the 1N5362BE3/TR8 uniquely combines JEDEC-standard axial T-18 packaging, 5 W power handling, RoHS-compliant e3 plating, and tape-and-reel delivery-making it optimal for high-reliability industrial power supply production.
Availability
1N5362BE3/TR8 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor references, overvoltage clamp protection, and programmable logic controller input protection requiring stable component supply and full JEDEC-compliant traceability.
Supply support for 1N5362BE3/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 conversion systems where long-term stability and surge resilience are critical.
FAQ
What is the Zener voltage tolerance of the 1N5362BE3/TR8?
The 1N5362BE3/TR8 has a Zener voltage tolerance of ±5%, indicated by the "B" suffix in its part number. This means its nominal 28 V regulation point falls within 26.6 V to 29.4 V at 50 mA test current and 25 °C lead temperature. The tolerance remains valid across the full operating temperature range of –65 °C to +150 °C as verified per JEDEC test conditions.
Does the 1N5362BE3/TR8 require dry packing before PCB assembly?
No, the 1N5362BE3/TR8 does not require dry packing. It carries IPC/JEDEC J-STD-020B moisture sensitivity Level 1 classification, meaning it is not hygroscopic and can be stored and assembled without baking or humidity-controlled handling. This simplifies manufacturing flow and reduces risk of popcorning during reflow.
What is the maximum steady-state power dissipation for the 1N5362BE3/TR8 on a standard FR4 PCB?
When mounted on a standard FR4 PCB (1 oz Cu) with 4 mm² copper pads and 1 mm track width, the 1N5362BE3/TR8 delivers 1.47 W steady-state power at TA = 25 °C. This value is derived from its 85 °C/W junction-to-ambient thermal resistance and must be derated linearly above 25 °C ambient per the curve in Figure 1 of the Microsemi datasheet.
How is polarity marked on the 1N5362BE3/TR8?
The 1N5362BE3/TR8 uses a cathode band to indicate polarity: the banded end is the cathode and must be held at a higher potential than the unbanded (anode) end during Zener operation. This marking conforms to JEDEC standards and is visible on the black epoxy body of the T-18 package.
Is the 1N5362BE3/TR8 suitable for surge protection applications?
Yes, the 1N5362BE3/TR8 is rated for 130 A peak non-recurrent surge current (IZSM) in an 8.3 ms half-sine waveform, making it suitable for clamping transient overvoltages in industrial power rails. Its low dynamic impedance (6.0 Ω) and stable ΔVZ (3.9 V) ensure predictable clamping behavior without thermal runaway under repetitive stress.
1N5362BE3/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
1N5362BE3/TR8 FAQ
1.How can I place an order for 1N5362BE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5362BE3/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 1N5362BE3/TR8 reliable?
The price and inventory of 1N5362BE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5362BE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5362BE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5362BE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5362BE3/TR8?
1N5362BE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5362BE3/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 1N5362BE3/TR8?
For technical support, including 1N5362BE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5362BE3/TR8 requirements.
6.How does Aetrix verify that 1N5362BE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5362BE3/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 1N5362BE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5362BE3/TR8?
All 1N5362BE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5362BE3/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 1N5362BE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5362BE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5362BE3/TR8 Tags
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