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Microchip Technology 1N5362A/TR12
- Part No.:
- 1N5362A/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5362A/TR12.pdf
- Description:
- DIODE ZENER 28V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:7,990
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Product details
Overview
1N5362A/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 28 V, ±10% tolerance (A suffix), 6.0 Ω maximum dynamic impedance at 50 mA test current, and 130 mA maximum Zener current when adequately heat-sunk. 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 1N5362A/TR12 datasheet, 1N5362A/TR12 pinout, 1N5362A/TR12 application, or 1N5362A/TR12 equivalent, key selection criteria include its 28 V Zener voltage, ±10% tolerance, 5 W steady-state power rating at lead temperature <25 °C, low 0.60 V voltage regulation (ΔVZ), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal voltage regulator in reverse-biased mode, maintaining stable output voltage across wide current (10–130 mA) and temperature (–65 °C to +150 °C) ranges. Its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W operation with minimal heatsinking at 3/8″ lead length.
The 1N5362A/TR12 exhibits 0.60 V voltage regulation (ΔVZ) between 10% and 50% of IZM, confirming tight regulation stability under varying load conditions. Its 6.0 Ω dynamic impedance at IZT = 50 mA and 0.5 μA maximum reverse leakage at VR = 20.1 V support high-accuracy reference applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 28 V nominal, ±10% tolerance - defines regulated output level for reference and clamp circuits |
| Test Current (IZT) | 50 mA - standard bias point for measuring VZ and dynamic impedance |
| Dynamic Impedance (ZZ) | 6.0 Ω max at IZT - low AC resistance ensures minimal voltage shift under dynamic load changes |
| Max Reverse Current (IR) | 0.5 μA at VR = 20.1 V - confirms sharp knee and low leakage below breakdown |
| Max Zener Current (IZM) | 130 mA - maximum DC current sustainable at rated 5 W with proper heatsinking |
| Voltage Regulation (ΔVZ) | 0.60 V - difference between VZ measured at 10% and 50% of IZM, indicating regulation linearity |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables 5 W dissipation with modest lead-length heatsinking |
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 | Reverse-bias reference node | Connected to system ground or lower-potential rail; forms cathode-referenced regulation path |
| Cathode | Regulated output terminal | Banded end; connected to voltage source input; delivers stable 28 V to load when reverse-biased |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard 1N53xx mechanical and electrical specifications for interchangeability |
| Moisture Sensitivity Level 1 | No dry pack required - simplifies handling and eliminates bake-out before assembly |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - safe for manual handling without special ESD controls |
| High surge current rating | 130 A non-recurrent half-sine (8.3 ms) - withstands transient overvoltage events in power rails |
| RoHS-compliant (e3) | Matte-tin lead finish meets EU RoHS Directive 2011/65/EU and J-STD-609A Class 1 |
Applications
| Industrial Power Supply Regulation | Overvoltage Clamp Protection |
|---|---|
|
Use Scenario: Stabilizing feedback reference in 24–32 V DC-DC converter secondary side. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference providing precise 28 V setpoint for error amplifier input. Use Value: Maintains ±10% output regulation despite ±15% input variation and 0–100% load step, enabled by 0.60 V ΔVZ and 6.0 Ω ZZ. |
Use Scenario: Protecting 28 V logic interface inputs against 40 V transients on automotive CAN bus lines. IC Role / Device Role / Timing Role: Passive clamping element diverting surge energy to ground when reverse voltage exceeds 28 V. Use Value: Absorbs 130 A surge (8.3 ms) without failure, limiting clamped voltage to ≤28.6 V due to 0.60 V regulation window. |
| Programmable Voltage Reference | Temperature-Stable Bias Generator |
|
Use Scenario: Setting threshold voltage for comparator-based battery charge termination at 28 V. IC Role / Device Role / Timing Role: Precision DC reference source with known VZ drift characteristics over –40 °C to +85 °C. Use Value: Delivers stable 28 V ±10% across full operating temperature range (–65 °C to +150 °C), enabling repeatable trip points. |
Use Scenario: Generating bias current for op-amp input stage in high-reliability instrumentation amplifiers. IC Role / Device Role / Timing Role: Low-noise, low-drift current source via constant-current Zener bias configuration. Use Value: Achieves <10 ppm/°C effective TC through matched resistor-Zener network, leveraging tight 6.0 Ω ZZ and low ΔVZ. |
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/TR12 | ±5% tolerance (vs. ±10% for 1N5362A/TR12); identical VZ, IZT, ZZ, and package | Higher accuracy required where 28 V ±1.4 V is insufficient; tighter regulation needed for precision references | Select 1N5362B/TR12 when voltage stability better than ±10% is critical; same thermal and surge specs apply |
| MMBZ5262B-TP | Surface-mount SOD-123 package; 28 V ±5%, 200 mW power rating (vs. 5 W axial); ZZ = 35 Ω | Low-power, space-constrained PCBs where 5 W dissipation is unnecessary and board area is premium | Choose MMBZ5262B-TP only for signal-level clamping or biasing; not suitable for >200 mW continuous loads |
Compared with 1N5362B/TR12, the 1N5362A/TR12 trades voltage accuracy for cost and robustness in high-current regulation, while MMBZ5262B-TP offers footprint reduction at the expense of power handling and regulation fidelity.
Availability
1N5362A/TR12 is available at Aetrix Electronics and suitable for industrial power supply regulation, overvoltage clamp protection, and programmable voltage reference applications requiring stable component supply and long-term obsolescence management.
Supply support for 1N5362A/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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N53xx series was designed for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal robustness, surge immunity, and JEDEC-standardized interchangeability.
FAQ
What is the Zener voltage tolerance of the 1N5362A/TR12?
The 1N5362A/TR12 has a nominal Zener voltage of 28 V with a ±10% tolerance, as indicated by the "A" suffix per Microsemi's documentation. This means the actual measured VZ falls between 25.2 V and 30.8 V at 50 mA test current and 25 °C. The tolerance is confirmed in the Electrical Characteristics table on page 1 of the official datasheet.
Does the 1N5362A/TR12 require dry packing before PCB assembly?
No, the 1N5362A/TR12 has Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it is not moisture-sensitive and does not require dry packing or baking prior to reflow soldering. This is explicitly stated in the Features section of the Microsemi datasheet and simplifies manufacturing logistics.
What is the maximum surge current rating for the 1N5362A/TR12?
The 1N5362A/TR12 is rated for a maximum non-recurrent surge current (IZSM) of 130 A, defined as the peak of an 8.3 ms half-sine waveform. This value is specified in the Electrical Characteristics table and reflects its capability to absorb transient overvoltage events without degradation.
How is thermal performance specified for the 1N5362A/TR12?
The 1N5362A/TR12 has a junction-to-lead thermal resistance (RθJL) of 25 °C/W when mounted with 3/8″ (10 mm) lead length from the body. At ambient mounting on FR4 with 1 oz copper, RθJA is 85 °C/W - both values are documented in the Maximum Ratings section and define safe 5 W operation limits.
Is the 1N5362A/TR12 RoHS compliant?
Yes, the 1N5362A/TR12 carries the "e3" suffix, indicating RoHS compliance per EU Directive 2011/65/EU. Its leads feature RoHS-compliant annealed matte-tin plating, verified per MIL-STD-750 Method 2026, and the epoxy body meets UL94V-0 flammability requirements.
1N5362A/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:
- ±10%
- 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
1N5362A/TR12 FAQ
1.How can I place an order for 1N5362A/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5362A/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 1N5362A/TR12 reliable?
The price and inventory of 1N5362A/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5362A/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5362A/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5362A/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5362A/TR12?
1N5362A/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5362A/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 1N5362A/TR12?
For technical support, including 1N5362A/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5362A/TR12 requirements.
6.How does Aetrix verify that 1N5362A/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5362A/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 1N5362A/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5362A/TR12?
All 1N5362A/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5362A/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 1N5362A/TR12 part is unused and in its original packaging.
Return procedure for 1N5362A/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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