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Microchip Technology 1N5362E3/TR12
- Part No.:
- 1N5362E3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5362E3/TR12.pdf
- Description:
- DIODE ZENER 28V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,057
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Product details
Overview
1N5362E3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 28 V, ±5% tolerance (B-suffix equivalent), 6.0 Ω maximum dynamic impedance at 50 mA test current, and 130 mA maximum Zener current when adequately heat-sunk. It regulates voltage in power supply reference and overvoltage protection circuits across industrial temperature range.
For engineers reviewing the 1N5362E3/TR12 datasheet, 1N5362E3/TR12 pinout, 1N5362E3/TR12 application, or 1N5362E3/TR12 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (130 A), and RoHS-compliant matte-tin plating for lead-free assembly.
Technical Context
This device operates as a voltage reference by maintaining stable reverse-bias conduction above its specified Zener breakdown voltage. Its low dynamic impedance (6.0 Ω) ensures minimal voltage variation under load changes, while the 25 °C/W thermal resistance enables reliable 5 W dissipation with 3/8″ lead length heat sinking.
The 1N5362E3/TR12 features cathode band polarity marking, UL94V-0 void-free epoxy encapsulation, and moisture sensitivity level 1-eliminating dry-pack requirements. It withstands 8.3 ms half-sine surge currents up to 130 A and exhibits ≤0.60 V voltage regulation (ΔVZ) between 10% and 50% of IZM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 28 V nominal, ±5% tolerance - defines precise regulation point for feedback loops and clamping thresholds |
| Power Dissipation (PD) | 5.0 W at TL = 25 °C - requires minimum 3/8″ (10 mm) lead length for full-rated operation |
| Dynamic Impedance (ZZ) | 6.0 Ω max at IZT = 50 mA - ensures tight voltage stability under varying load currents |
| Max Reverse Current (IR) | 0.5 μA at VR = 21.2 V - guarantees low leakage in high-impedance bias networks |
| Surge Current (IZSM) | 130 A peak (8.3 ms half-sine) - supports transient overvoltage suppression without failure |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables predictable thermal design with standard axial mounting |
| Voltage Regulation (ΔVZ) | 0.60 V max - quantifies worst-case deviation between 10% and 50% of rated Zener current |
Pinout & Package
Package: Axial-leaded T-18 plastic case per JEDEC DO-204AL, void-free UL94V-0 epoxy body, matte-tin plated leads, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to circuit common; reverse-biased operation requires cathode at higher potential |
| Cathode | Zener regulation terminal / Voltage reference output | Banded end; must be held ≥28 V above anode to maintain regulation; primary connection for feedback networks |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant construction | e3 suffix confirms lead-free matte-tin plating compliant with EU Directive 2011/65/EU |
| JEDEC-registered Zener series | 1N53xxB family meets JEDEC standards for voltage regulation, marking, and mechanical dimensions |
| Level 1 moisture sensitivity | No dry-pack required per IPC/JEDEC J-STD-020B - simplifies handling and storage logistics |
| High surge current capability | 130 A non-repetitive surge rating enables robust transient suppression without derating |
| Low voltage regulation drift | 0.60 V ΔVZ ensures stable reference across 10–50% of IZM, critical for precision feedback |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Primary-side voltage reference establishing closed-loop setpoint accuracy. Use Value: 28 V Zener voltage matches TL431-based shunt regulator thresholds; ±5% tolerance maintains <±1% output regulation. | Use Scenario: Clamps transient spikes on 24 V DC bus lines in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Shunt protection element diverting surge energy to ground before downstream IC damage. Use Value: 130 A surge rating absorbs 8.3 ms transients per IEC 61000-4-5; 0.5 μA leakage avoids loading sensitive analog inputs. |
| Programmable Voltage Reference | DC Link Voltage Monitor |
Use Scenario: Sets adjustable threshold in comparator-based battery charge termination circuit for 24 V systems. IC Role / Device Role / Timing Role: Stable reference input for LM393 comparator comparing battery voltage against cutoff point. Use Value: 6.0 Ω dynamic impedance minimizes error from comparator input bias current; 25 °C/W RθJL allows direct PCB trace heat sinking. | Use Scenario: Monitors DC link voltage in motor drive inverters to trigger overvoltage shutdown before IGBT failure. IC Role / Device Role / Timing Role: Precision voltage sensing node feeding ADC input through resistive divider. Use Value: 0.60 V ΔVZ limits reference error contribution to <0.2% of 28 V setpoint; UL94V-0 package withstands high-voltage arc environments. |
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 | Same 28 V ±5% Zener voltage, identical electrical specs, but non-RoHS tin-lead plating | Not suitable for lead-free assembly processes requiring e3 compliance | Select 1N5362E3/TR12 for RoHS-compliant production; use 1N5362B only for legacy tin-lead reflow |
| SMBJ5362B | Surface-mount SMB package, same 28 V ±5% rating, but lower 1.0 W power rating and 100 °C/W RθJA | Requires PCB redesign for SMT placement; unsuitable for 5 W continuous dissipation without extensive copper pour | Choose SMBJ5362B only for space-constrained designs where 1 W max dissipation suffices |
Compared with 1N5362B and SMBJ5362B, the 1N5362E3/TR12 uniquely combines RoHS compliance, 5 W axial-power handling, and 25 °C/W thermal resistance-making it optimal for through-hole industrial power supplies needing long-term reliability and regulatory alignment.
Availability
1N5362E3/TR12 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and programmable voltage references requiring stable component supply across automotive, industrial control, and telecom infrastructure programs.
Supply support for 1N5362E3/TR12 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, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The 1N53xxB Zener series was engineered for ruggedized voltage regulation in harsh-environment power systems-emphasizing surge resilience, wide temperature operation (−65 °C to +150 °C), and JEDEC-standard mechanical consistency.
FAQ
What is the Zener voltage tolerance of the 1N5362E3/TR12?
The 1N5362E3/TR12 has a nominal Zener voltage of 28 V with ±5% tolerance, consistent with the "B" suffix designation in the 1N53xxB family. This tolerance is confirmed in the Electrical Characteristics table on page 1 of the Microsemi datasheet, where 1N5362B (identical electrical spec) lists VZ = 28.0 V ±5%. The e3 suffix denotes RoHS compliance but does not alter voltage tolerance.
Does the 1N5362E3/TR12 require dry-pack packaging for moisture sensitivity?
No, the 1N5362E3/TR12 has moisture sensitivity level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored and processed without dry-pack desiccant or baking. This is explicitly stated in the Features section of the Microsemi datasheet and results from its void-free UL94V-0 epoxy encapsulation.
What is the maximum steady-state power dissipation for the 1N5362E3/TR12 on a standard FR4 PCB?
When mounted on FR4 with 1 oz copper, 4 mm² pads, and 1 mm × 25 mm traces, the 1N5362E3/TR12 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 is documented in the Maximum Ratings section of the datasheet.
How is polarity marked on the 1N5362E3/TR12?
The 1N5362E3/TR12 uses a cathode band marking: the banded end is the cathode and must be held at a higher potential than the anode during Zener regulation. This polarity convention is specified in the Mechanical and Packaging section and applies to all 1N53xx devices in the series.
What does the "TR12" suffix indicate in 1N5362E3/TR12?
The "TR12" suffix indicates tape-and-reel packaging per EIA-296 standard, with 12-inch reel diameter. This format enables automated pick-and-place assembly and is distinct from bulk or ammo-pack options. The "e3" portion confirms RoHS-compliant matte-tin plating, as verified in the Features section of the Microsemi datasheet.
1N5362E3/TR12 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/TR12 FAQ
1.How can I place an order for 1N5362E3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5362E3/TR12 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/TR12 reliable?
The price and inventory of 1N5362E3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5362E3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5362E3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5362E3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5362E3/TR12?
1N5362E3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5362E3/TR12 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/TR12?
For technical support, including 1N5362E3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5362E3/TR12 requirements.
6.How does Aetrix verify that 1N5362E3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5362E3/TR12 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/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5362E3/TR12?
All 1N5362E3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5362E3/TR12, 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/TR12 part is unused and in its original packaging.
Return procedure for 1N5362E3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5362E3/TR12 Tags
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BZT52C5V6T-7
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MM5Z5V1ST1G
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