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Microchip Technology 1N5362C/TR12
- Part No.:
- 1N5362C/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5362C/TR12.pdf
- Description:
- DIODE ZENER 28V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:9,649
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Product details
Overview
1N5362C/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with a nominal regulation voltage of 28 V, ±2% tolerance (C suffix), 6.0 Ω maximum dynamic impedance at 50 mA test current, 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 1N5362C/TR12 datasheet, 1N5362C/TR12 pinout, 1N5362C/TR12 application, or 1N5362C/TR12 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), steady-state power derating, 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 in reverse-biased mode, with cathode indicated by a band and requiring the banded end to be held positive relative to the anode. Its low 25 °C/W junction-to-lead thermal resistance enables stable 5 W operation at TL < 25 °C with 3/8″ lead length.
The 1N5362C/TR12 exhibits 0.60 V maximum voltage regulation (ΔVZ) between 10% and 50% of IZM, and 6.0 Ω maximum dynamic impedance (ZZ) at IZT = 50 mA - confirming tight regulation performance across its operating current range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 28 V ±2% - precise regulation point for feedback loops and reference circuits |
| Test Current (IZT) | 50 mA - standardized bias point for measuring VZ and dynamic impedance |
| Dynamic Impedance (ZZ) | 6.0 Ω max at IZT - low AC resistance ensures minimal output voltage variation under load transients |
| Max Reverse Current (IR) | 0.5 μA at VR = 21.2 V - ultra-low leakage preserves accuracy in high-impedance reference nodes |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - requires adequate heat sinking via leads for full-rated operation |
| Surge Current (IZSM) | 130 A (8.3 ms half-sine) - withstands transient overvoltage events without degradation |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables predictable thermal design with standard axial-lead mounting |
Pinout & Package
Package: Axial-leaded T-18 plastic encapsulated case (Void-free UL94V-0 epoxy), cathode identified by band. Leads are annealed matte-tin plated, solderable 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 regulated voltage node; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables tighter feedback loop control vs. ±5% (B) or ±10% (A) variants, reducing calibration overhead |
| RoHS-compliant (e3 suffix) | Meets global environmental compliance without sacrificing electrical or thermal performance |
| Moisture sensitivity Level 1 | No dry pack required - simplifies handling, storage, and assembly logistics |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD handling during board assembly and testing |
| High surge current rating (130 A) | Provides robust transient immunity in unregulated input stages without external clamping |
Applications
| Industrial Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing feedback reference in 24–32 V DC-DC converter secondary side. IC Role / Device Role / Timing Role: Precision voltage reference element in optocoupler-based isolated feedback loop. Use Value: ±2% tolerance and 0.60 V ΔVZ ensure output voltage drift remains within ±1.5% over line/load/temperature. |
Use Scenario: Clamping transient spikes on 24 V PLC I/O lines exposed to inductive kickback. IC Role / Device Role / Timing Role: Standby shunt protector activated only during overvoltage events >28 V. Use Value: 130 A surge rating and 25 °C/W RθJL allow single-device protection without thermal runaway risk. |
| Programmable Logic Controller (PLC) Input Conditioning | Test Equipment Reference Source |
Use Scenario: Providing stable 28 V reference for analog input scaling circuitry in modular I/O modules. IC Role / Device Role / Timing Role: Low-drift Zener reference for 12-bit ADC front-end biasing. Use Value: 0.5 μA reverse leakage at 21.2 V minimizes error contribution in high-impedance divider networks. |
Use Scenario: Serving as calibrated voltage standard in benchtop multimeter calibration fixtures. IC Role / Device Role / Timing Role: Primary reference element in traceable 28 V source with temperature-compensated stability. Use Value: Tight ±2% initial tolerance and low ΔVZ support sub-0.1% absolute accuracy after system-level trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5362B/TR12 | ±5% tolerance (B suffix), same VZ = 28 V, identical package and thermal specs | Acceptable where tighter regulation not required; lower cost for non-critical references | Select when system-level calibration compensates for initial tolerance; avoid in open-loop references |
| MMBZ5262ET1G | Surface-mount SOD-123 package, 28 V ±5%, 0.5 W rating, 100 Ω ZZ | Not suitable for 5 W continuous dissipation; limited to low-power signal-level clamping | Choose only for space-constrained PCBs with <100 mW average power; requires thermal redesign |
Compared with 1N5362C/TR12, the 1N5362B/TR12 offers relaxed tolerance at identical thermal and surge capability, while MMBZ5262ET1G trades power handling and regulation precision for miniaturization - making the 1N5362C/TR12 optimal for high-reliability, medium-power regulation where accuracy and ruggedness are prioritized.
Availability
1N5362C/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, programmable logic controller (PLC) modules, and test equipment requiring stable component supply with RoHS compliance and long-lifecycle support.
Supply support for 1N5362C/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 specifically for robust, high-power voltage regulation in harsh-environment systems where thermal stability, surge resilience, and long-term parametric consistency are critical.
FAQ
What is the Zener voltage tolerance of the 1N5362C/TR12?
The 1N5362C/TR12 has a Zener voltage tolerance of ±2%, as indicated by the "C" suffix in its part number. This is confirmed in the manufacturer's datasheet note stating that C-suffix devices are designated for ±2% tolerance. The nominal Zener voltage is 28 V, so the actual regulation range is 27.44 V to 28.56 V at 25 °C with 50 mA test current. This tolerance directly impacts reference accuracy in feedback circuits using the 1N5362C/TR12.
Does the 1N5362C/TR12 require dry packing for moisture sensitivity?
No, the 1N5362C/TR12 has a moisture sensitivity level (MSL) of Level 1 per IPC/JEDEC J-STD-020B, meaning it does not require dry packing or baking prior to assembly. This is explicitly stated in the "Features" section of the datasheet and simplifies handling, storage, and reflow processes. The 1N5362C/TR12's void-free thermosetting epoxy body contributes to this robust moisture resistance.
What is the maximum surge current rating for the 1N5362C/TR12?
The 1N5362C/TR12 has a maximum non-recurrent surge current (IZSM) rating of 130 A, specified for an 8.3 ms half-sine waveform. This value is listed in the Electrical Characteristics table under the "MAXIMUM SURGE CURRENT (IZSM)" column for type number 1N5362B - and applies identically to the 1N5362C/TR12 since surge rating is independent of tolerance suffix. This rating enables reliable transient suppression in industrial power rails.
How is polarity marked on the 1N5362C/TR12?
The 1N5362C/TR12 uses a cathode band for polarity identification: the banded end is the cathode and must be held positive with respect to the anode during normal Zener operation. This marking convention is consistent across the entire 1N5333–1N5388 family and is documented in the "MECHANICAL AND PACKAGING" section. Incorrect polarity will result in forward conduction rather than regulation.
What is the thermal resistance junction-to-lead for the 1N5362C/TR12?
The thermal resistance junction-to-lead (RθJL) for the 1N5362C/TR12 is 25 °C/W, measured at 3/8″ (10 mm) lead length from the body. This value is specified in the "MAXIMUM RATINGS" section and is critical for calculating junction temperature rise under 5 W operation. It assumes adequate heat sinking through the leads and supports full-rated power dissipation only when lead temperature remains below 25 °C.
1N5362C/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:
- ±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/TR12 FAQ
1.How can I place an order for 1N5362C/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5362C/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 1N5362C/TR12 reliable?
The price and inventory of 1N5362C/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5362C/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5362C/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5362C/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5362C/TR12?
1N5362C/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5362C/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 1N5362C/TR12?
For technical support, including 1N5362C/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5362C/TR12 requirements.
6.How does Aetrix verify that 1N5362C/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5362C/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 1N5362C/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5362C/TR12?
All 1N5362C/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5362C/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 1N5362C/TR12 part is unused and in its original packaging.
Return procedure for 1N5362C/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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