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Microchip Technology 1N5362E3/TR8
- Part No.:
- 1N5362E3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5362E3/TR8.pdf
- Description:
- DIODE ZENER 28V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:4,659
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Product details
Overview
1N5362E3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 28 V, ±5% tolerance (B-suffix equivalent), 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 industrial power supplies.
For engineers reviewing the 1N5362E3/TR8 datasheet, 1N5362E3/TR8 pinout, 1N5362E3/TR8 application, or 1N5362E3/TR8 equivalent, key selection criteria include Zener voltage stability under varying load/temperature, low dynamic impedance for tight regulation, RoHS-compliant matte-tin plating, and tape-and-reel packaging for automated assembly.
Technical Context
This device functions as a two-terminal voltage regulator operating in reverse breakdown mode. Its 28 V nominal Zener voltage is specified at 50 mA test current (IZT) with 6.0 Ω dynamic impedance (ZZ) and 0.60 V maximum voltage regulation (ΔVZ) between 10% and 50% of IZM.
Thermal design relies on junction-to-lead resistance of 25 °C/W at 10 mm lead length, enabling 5.0 W steady-state dissipation at TL = 25 °C. Reverse leakage is limited to 0.5 μA at 21.2 V (90% of VZ), and forward voltage is ≤1.2 V at 1.0 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 28 V nominal, ±5% tolerance - defines stable regulation point across temperature and current variation |
| Test Current (IZT) | 50 mA - operating point where VZ and ZZ are guaranteed per JEDEC spec |
| Dynamic Impedance (ZZ) | 6.0 Ω max at IZT - determines output voltage deviation under load transients |
| Max Surge Current (IZSM) | 130 A (8.3 ms half-sine) - supports transient overvoltage clamping without failure |
| Power Dissipation (PD) | 5.0 W at TL = 25 °C - requires thermal management via lead heatsinking for full-power operation |
| Operating Temperature | –65 °C to +150 °C - suitable for harsh industrial and automotive under-hood environments |
| Reverse Leakage (IR) | 0.5 μA max at 21.2 V - ensures minimal standby power loss in high-impedance bias networks |
Pinout & Package
Package: Axial-leaded T-18 plastic case (Void-free UL94V-0 epoxy), cathode indicated by band; leads plated with RoHS-compliant annealed matte tin per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for reverse-bias operation | Connected to lower-potential side of regulated circuit; forms return path for Zener current |
| Cathode | Regulated output node | Banded end; held at stable 28 V relative to anode when reverse-biased above knee voltage |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener series | Ensures standardized electrical behavior and interchangeability across qualified suppliers |
| Moisture sensitivity Level 1 | No dry pack required - simplifies handling and eliminates bake-out prior to reflow |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Enables safe manual handling and board-level assembly without special grounding protocols |
| Tape-and-reel packaging (TR8) | Supports high-speed pick-and-place placement with EIA-296 compliance and 8 mm tape pitch |
| RoHS-compliant (e3 suffix) | Meets EU Directive 2011/65/EU with lead-free matte-tin plating and halogen-free epoxy |
Applications
| Industrial Power Supply Regulation | Automotive Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing feedback reference in 24 V DC-DC converter secondary-side error amplifiers. IC Role / Device Role / Timing Role: Voltage reference element providing fixed 28 V reference to optocoupler input or TL431 comparator. Use Value: Low 6.0 Ω ZZ minimizes output voltage drift under line/load transients, improving regulation accuracy to ±1.4% over 10–100 mA range. |
Use Scenario: Clamping induced transients on 24 V battery rail during load dump events. IC Role / Device Role / Timing Role: Standby shunt protector activated above 28 V threshold to divert surge energy away from downstream ECUs. Use Value: 130 A non-recurrent surge rating handles ISO 7637-2 Pulse 5a without degradation, extending system reliability. |
| Programmable Logic Controller I/O Protection | Test Equipment Reference Calibration |
Use Scenario: Input stage protection for 24 V digital inputs exposed to field wiring faults. IC Role / Device Role / Timing Role: Reverse-biased clamp limiting input voltage to 28 V during surge or miswiring events. Use Value: 0.5 μA leakage at 21.2 V prevents false triggering in high-impedance sensing circuits. |
Use Scenario: Stable voltage reference in portable multimeter front-end analog section. IC Role / Device Role / Timing Role: Precision 28 V reference source for ADC calibration and offset trimming. Use Value: ΔVZ ≤ 0.60 V across 5–25 mA ensures <0.02% reference drift during self-test sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5362B | Same 28 V VZ, ±5%, but leaded only (no TR8 tape/reel); non-RoHS tin-lead plating | Not suitable for RoHS-compliant production or automated SMT lines requiring e3 compliance | Select 1N5362B only for legacy repair or non-RoHS prototyping where tape-and-reel is unnecessary |
| SMBJ5362B | Surface-mount SMB package; identical 28 V/±5% spec but higher thermal resistance (junction-to-ambient ≈ 125 °C/W) | Requires PCB copper area for heat sinking; unsuitable for through-hole board upgrades or high-current (>1 A) shunt use | Choose SMBJ5362B only when space-constrained layouts demand SMT and thermal budget allows derated power |
Compared with 1N5362B and SMBJ5362B, the 1N5362E3/TR8 uniquely combines RoHS compliance, tape-and-reel automation readiness, and axial-leaded thermal performance-enabling direct replacement in legacy 24 V industrial designs without layout or sourcing changes.
Availability
1N5362E3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and programmable logic controller I/O protection requiring stable component supply and long-term obsolescence mitigation.
Supply support for 1N5362E3/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 Zener series was designed for ruggedized voltage regulation in mission-critical power systems where long-term stability, surge resilience, and extended temperature operation are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N5362E3/TR8?
The 1N5362E3/TR8 has a nominal Zener voltage of 28 V with ±5% tolerance, consistent with the B-suffix designation in the 1N5333B–1N5388B family. This means the actual measured VZ falls between 26.6 V and 29.4 V at 50 mA test current and 25 °C lead temperature. The e3 suffix confirms RoHS compliance but does not alter voltage tolerance.
Can the 1N5362E3/TR8 be used in surface-mount designs?
No-the 1N5362E3/TR8 uses axial-leaded T-18 packaging and is not compatible with SMT reflow processes. For surface-mount equivalents, Microsemi offers the SMBJ5362B in SMB package. Attempting to mount the 1N5362E3/TR8 on SMT pads would violate its mechanical specification, risk solder joint fracture, and compromise thermal performance due to missing lead heatsinking.
What is the maximum continuous power dissipation for the 1N5362E3/TR8?
The 1N5362E3/TR8 is rated for 5.0 W steady-state power dissipation at TL = 25 °C with 10 mm lead length from the body. Derating is required above 25 °C at 20 mW/°C (per Figure 1). When mounted on FR4 with 4 mm² copper pads, its usable power drops to 1.47 W at TA = 25 °C due to higher junction-to-ambient thermal resistance (85 °C/W).
Does the 1N5362E3/TR8 require moisture preconditioning before reflow?
No-the 1N5362E3/TR8 has IPC/JEDEC J-STD-020B moisture sensitivity Level 1, meaning it may be stored indefinitely at ambient conditions without baking. No dry pack or preconditioning is required prior to wave soldering or hand soldering, simplifying manufacturing logistics and reducing process risk.
How is polarity identified on the 1N5362E3/TR8?
The cathode of the 1N5362E3/TR8 is marked by a visible color band on the epoxy body. During operation, the banded (cathode) end must be held at a more positive potential than the anode to achieve reverse-bias Zener conduction. Forward voltage is ≤1.2 V at 1.0 A, confirming standard silicon diode behavior in forward conduction.
1N5362E3/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
1N5362E3/TR8 FAQ
1.How can I place an order for 1N5362E3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5362E3/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 1N5362E3/TR8 reliable?
The price and inventory of 1N5362E3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5362E3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5362E3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5362E3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5362E3/TR8?
1N5362E3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5362E3/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 1N5362E3/TR8?
For technical support, including 1N5362E3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5362E3/TR8 requirements.
6.How does Aetrix verify that 1N5362E3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5362E3/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 1N5362E3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5362E3/TR8?
All 1N5362E3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5362E3/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 1N5362E3/TR8 part is unused and in its original packaging.
Return procedure for 1N5362E3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5362E3/TR8 Tags
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