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Microchip Technology 1N5362C/TR8
- Part No.:
- 1N5362C/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5362C/TR8.pdf
- Description:
- DIODE ZENER 28V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,794
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Product details
Overview
1N5362C/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with a nominal regulation voltage of 28 V, ±2% tolerance (C suffix), 50 mA test current (IZT), 6.0 Ω dynamic impedance (ZZ), and 130 mA maximum Zener current (IZM) at 25 °C lead temperature. 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 1N5362C/TR8 datasheet, 1N5362C/TR8 pinout, 1N5362C/TR8 application, or 1N5362C/TR8 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (130 A), reverse leakage (0.5 μA @ 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, maintaining stable 28 V output across a wide current range (10–130 mA). Its low dynamic impedance (6.0 Ω) ensures minimal voltage variation under load changes, and its 25 °C/W thermal resistance enables reliable 5 W dissipation with standard 3/8″ lead length heat sinking.
The 1N5362C/TR8 exhibits tight voltage regulation (ΔVZ = 3.9 V between 10% and 50% IZM), low knee impedance (ZZK = 0.60 Ω @ 1.0 mA), and withstands 8.3 ms half-sine surge currents up to 130 A - critical for transient suppression in DC power rails and feedback loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 28 V ±2% - precise reference for feedback networks requiring <±0.56 V deviation. |
| Test Current (IZT) | 50 mA - operating point where VZ and ZZ are specified; design must bias near this for rated performance. |
| Dynamic Impedance (ZZ) | 6.0 Ω - low AC resistance ensures <0.3 V shift per 50 mA load change in regulation loop. |
| Max Zener Current (IZM) | 130 mA - maximum continuous DC current at TL = 25 °C with 3/8″ lead heat sinking. |
| Reverse Leakage (IR) | 0.5 μA @ 21.2 V - negligible error contribution in high-impedance reference paths. |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables full 5 W dissipation with minimal temperature rise when leads act as heatsink. |
| Surge Current (IZSM) | 130 A (8.3 ms half-sine) - sustains single-event transients without degradation in clamp circuits. |
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 ground node | Connected to circuit common; reverse-biased operation requires cathode at higher potential. |
| Cathode | Regulated output node | Banded end; held at stable 28 V relative to anode during breakdown conduction. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables direct use in precision references without post-calibration trimming. |
| Moisture sensitivity Level 1 (IPC/JEDEC J-STD-020B) | Eliminates dry-pack requirement and floor-life constraints for SMT reflow compatibility. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Withstands handling without special grounding protocols - reduces assembly-line failure risk. |
| RoHS-compliant (e3 suffix) | Meets EU Directive 2011/65/EU; matte-tin plating ensures solderability and long-term reliability. |
| High surge current rating (130 A) | Provides robust transient clamping in 24 V industrial systems without external TVS augmentation. |
Applications
| Industrial Power Supply Feedback | Overvoltage Clamp for 24 V Rail |
|---|---|
Use Scenario: Regulating output of isolated DC-DC converter via optocoupler feedback network. IC Role / Device Role / Timing Role: Precision 28 V reference source setting upper limit of feedback voltage divider. Use Value: ±2% tolerance ensures output stays within ±0.6 V of 24 V nominal, meeting EN 61000-3-2 compliance margins. |
Use Scenario: Protecting PLC I/O modules against 24 V rail surges exceeding 30 V. IC Role / Device Role / Timing Role: Shunt clamp activated above 28 V to divert excess current before downstream IC damage. Use Value: 130 A surge rating absorbs 8.3 ms transients per IEC 61000-4-5 Level 3 without derating or parallel devices. |
| Programmable Logic Controller Reference | Automotive Body Control Module Bias |
Use Scenario: Providing stable bias voltage for analog comparators monitoring battery voltage thresholds. IC Role / Device Role / Timing Role: Low-drift 28 V reference enabling accurate 12 V/24 V detection across −40 °C to +85 °C. Use Value: 25 °C/W thermal resistance maintains <10 °C junction rise at 100 mA, minimizing VZ drift (<0.05%/°C). |
Use Scenario: Generating regulated 28 V supply for CAN transceiver bias in 12 V vehicle architecture. IC Role / Device Role / Timing Role: Zener-based pre-regulator stepping up 12 V bus to stable 28 V for isolated interface ICs. Use Value: 0.5 μA IR at 21.2 V prevents loading of upstream LDO, preserving efficiency in always-on subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5362B/TR8 | ±5% tolerance (B suffix), same VZ nominal, identical package and thermal specs. | Acceptable where ±1.4 V regulation window suffices; lower cost for non-critical references. | Select when budget constraints outweigh need for tight voltage accuracy. |
| MMSZ5262ET1G | Surface-mount SOD-123 package, 500 mW rating, ±5%, 28 V nominal, 100 mA IZM. | Not suitable for 5 W dissipation; limited to low-power biasing or signal-level clamping. | Choose only for space-constrained PCBs where thermal load is <0.5 W and no axial mounting is allowed. |
Compared with 1N5362B/TR8, the 1N5362C/TR8 delivers tighter regulation for feedback-critical designs, while MMSZ5262ET1G offers footprint reduction at the expense of power handling and thermal robustness - making 1N5362C/TR8 optimal for industrial 5 W reference and clamp roles.
Availability
1N5362C/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, programmable logic controllers, and automotive body control modules requiring stable component supply with traceable sourcing and long-lifecycle support.
Supply support for 1N5362C/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 1N53xx series was designed specifically for ruggedized 5 W voltage regulation in harsh-environment power systems, emphasizing thermal stability, surge resilience, and long-term parametric consistency.
FAQ
What is the Zener voltage tolerance of the 1N5362C/TR8?
The 1N5362C/TR8 has a Zener voltage tolerance of ±2%, as indicated by the "C" suffix per Microsemi's documentation. This means its measured VZ at 50 mA test current falls within 27.44 V to 28.56 V at 25 °C lead temperature. The tolerance is guaranteed across the full operating temperature range (−65 °C to +150 °C), with typical drift less than 0.05%/°C due to its low thermal resistance.
Can the 1N5362C/TR8 be used in surface-mount designs?
No, the 1N5362C/TR8 is an axial-leaded T-18 package and is not compatible with surface-mount assembly. For SMT equivalents, Microsemi offers the SMBJ5362B (SMB package, 5 W) or MMSZ5262ET1G (SOD-123, 500 mW); however, neither matches the 1N5362C/TR8's power rating, thermal performance, or ±2% tolerance in the same footprint.
What is the maximum power dissipation of the 1N5362C/TR8 at ambient temperature?
The 1N5362C/TR8 dissipates 5.0 W at 25 °C lead temperature (TL), but its steady-state power drops to 1.47 W at 25 °C ambient (TA) when mounted on FR4 with 4 mm² copper pads. Derating follows a linear curve: power decreases by 33 mW/°C above 25 °C TL, per Figure 1 in the official datasheet. Full 5 W operation requires adequate lead-length heat sinking.
Does the 1N5362C/TR8 meet RoHS requirements?
Yes, the "e3" designation in the full part number (1N5362C/TR8 e3) confirms RoHS compliance per EU Directive 2011/65/EU. Its leads are plated with annealed matte tin, solderable per MIL-STD-750 Method 2026, and the void-free epoxy body meets UL94V-0 flammability standards - all verified in Microsemi's REV D datasheet dated 2008.
How does the 1N5362C/TR8 compare to the 1N5362B/TR8 in terms of regulation performance?
The 1N5362C/TR8 provides ±2% Zener voltage tolerance versus ±5% for the 1N5362B/TR8, resulting in a 0.56 V vs. 1.4 V regulation window at 28 V. Both share identical dynamic impedance (6.0 Ω), thermal resistance (25 °C/W), and surge rating (130 A), so the C-suffix version improves accuracy without sacrificing robustness - ideal for closed-loop feedback where gain stability depends on reference precision.
1N5362C/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:
- ±2%
- 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
1N5362C/TR8 FAQ
1.How can I place an order for 1N5362C/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5362C/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 1N5362C/TR8 reliable?
The price and inventory of 1N5362C/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5362C/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5362C/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5362C/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5362C/TR8?
1N5362C/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5362C/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 1N5362C/TR8?
For technical support, including 1N5362C/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5362C/TR8 requirements.
6.How does Aetrix verify that 1N5362C/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5362C/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 1N5362C/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5362C/TR8?
All 1N5362C/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5362C/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 1N5362C/TR8 part is unused and in its original packaging.
Return procedure for 1N5362C/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5362C/TR8 Tags
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