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Microchip Technology 1N5362AE3/TR12
- Part No.:
- 1N5362AE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5362AE3/TR12.pdf
- Description:
- DIODE ZENER 28V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:2,605
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Product details
Overview
1N5362AE3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 28 V, ±10% tolerance (A suffix), 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 1N5362AE3/TR12 datasheet, 1N5362AE3/TR12 pinout, 1N5362AE3/TR12 application, or 1N5362AE3/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 = 20.1 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 mode. Its Zener voltage is specified at 28 V ±10% under 50 mA DC test current at 25 °C lead temperature, with dynamic impedance measured at 1 kHz using 10% RMS AC modulation superimposed on IZT.
It exhibits low voltage regulation (ΔVZ = 3.9 V) between 10% and 50% of IZM, supports high surge current (130 A, 8.3 ms half-sine), and maintains stable regulation across –65 °C to +150 °C ambient range with moisture sensitivity level 1 per J-STD-020B.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 28 V ±10% - defines regulated output voltage under 50 mA DC bias at 25 °C lead temp |
| Test Current (IZT) | 50 mA - standard DC current at which VZ is measured; sets operating point for regulation stability |
| Dynamic Impedance (ZZ) | 6.0 Ω max - indicates small-signal AC resistance; lower value improves regulation against load transients |
| Max Surge Current (IZSM) | 130 A (8.3 ms half-sine) - determines transient overvoltage clamping capability without failure |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables 5 W dissipation with ≤125 °C junction rise above 25 °C lead temp |
| Reverse Leakage (IR) | 0.5 μA max at VR = 20.1 V - ensures minimal standby power loss in high-impedance bias networks |
| Forward Voltage (VF) | 1.2 V max at 1.0 A - defines conduction drop when used in series forward-path configurations |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free UL94V-0 epoxy), cathode indicated by band; leads are annealed matte-tin plated per MIL-STD-750 Method 2026, RoHS compliant (e3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for reverse-bias operation | Connected to system ground or lower-potential rail; forms return path during Zener conduction |
| Cathode | Regulated output node | Banded end; connected to voltage node requiring stabilization; carries full Zener current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures standardized mechanical dimensions, marking, and test methodology across manufacturers |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints for assembly planning |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates need for special ESD workstations |
| High surge current rating (130 A) | Provides robust transient suppression without external TVS devices in cost-sensitive designs |
| RoHS-compliant matte-tin plating | Supports lead-free reflow soldering at 260 °C/10 s while maintaining solderability and corrosion resistance |
Applications
| Industrial Power Supply Reference | Overvoltage Clamp in Telecom Line Cards |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated DC-DC converter error amplifiers. IC Role / Device Role / Timing Role: Two-terminal shunt regulator providing precise 28 V reference for TL431 or optocoupler bias networks. Use Value: Maintains ±10% output regulation despite input ripple and load variation, enabling <1% output voltage drift over temperature. | Use Scenario: Protecting line interface ICs from lightning-induced surges on -48 V telecom distribution rails. IC Role / Device Role / Timing Role: Passive clamp limiting rail voltage to 28 V during 10/700 µs transients. Use Value: Absorbs 130 A surge energy without degradation, preserving downstream PHY and controller integrity. |
| Programmable Logic Controller (PLC) Input Protection | Automotive Body Control Module Voltage Monitor |
Use Scenario: Conditioning 24 V digital input signals subject to inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Shunt limiter clamping induced spikes to safe levels before Schmitt-trigger input stages. Use Value: Prevents false triggering and latch-up in microcontroller GPIOs with <0.5 µA leakage at 20.1 V. | Use Scenario: Monitoring battery voltage in 12 V automotive systems where 28 V represents dual-battery or alternator overvoltage condition. IC Role / Device Role / Timing Role: Threshold detector feeding comparator input to trigger fault shutdown logic. Use Value: Delivers stable 28 V reference across –40 °C to +125 °C, supporting ASIL-B diagnostic coverage. |
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 VZ (28 V), tighter ±5% tolerance, identical package and thermal specs | Higher precision required in feedback loops where ±10% tolerance causes unacceptable output variance | Select 1N5362B when regulation accuracy >±5% is mandatory; otherwise 1N5362AE3/TR12 suffices for general-purpose clamping |
| MMBZ5256BS | Surface-mount SOT-23 package, 28 V ±5%, 225 mW power rating, 30 Ω ZZ | Used in space-constrained PCBs where axial leads are incompatible with automated placement or height restrictions | Choose MMBZ5256BS only for low-power (<250 mW), high-density layouts; not a replacement for 5 W thermal performance |
Compared with 1N5362B and MMBZ5256BS, the 1N5362AE3/TR12 offers optimal balance of cost, surge robustness, and axial-mount flexibility for medium-power industrial clamping-neither the highest precision nor smallest footprint, but best-in-class for 5 W Zener reliability in harsh environments.
Availability
1N5362AE3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, telecom line protection, and automotive body control modules requiring stable component supply with RoHS compliance and extended temperature support.
Supply support for 1N5362AE3/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, RF, and discrete components for aerospace, defense, and industrial markets.
The 1N53xx series was designed specifically for ruggedized voltage regulation in mission-critical power systems where thermal stability, surge immunity, and long-term parameter consistency are non-negotiable.
FAQ
What is the Zener voltage tolerance of the 1N5362AE3/TR12?
The 1N5362AE3/TR12 has a Zener voltage tolerance of ±10%, as indicated by the "A" suffix in its part number. This means its nominal 28 V regulation voltage falls within the range of 25.2 V to 30.8 V at 50 mA test current and 25 °C lead temperature. The e3 suffix confirms RoHS compliance, and TR12 denotes tape-and-reel packaging per EIA-296.
How does the 1N5362AE3/TR12 handle thermal dissipation in PCB-mounted applications?
The 1N5362AE3/TR12 achieves 5 W power dissipation at 25 °C lead temperature (3/8″ from body), but its thermal resistance rises to 85 °C/W junction-to-ambient when mounted on FR4 with 4 mm² copper pads. To sustain full power, designers must use adequate copper area and consider derating curves in Figure 1 of the Microsemi datasheet. The 1N5362AE3/TR12's 25 °C/W RθJL enables direct heatsinking via leads.
Can the 1N5362AE3/TR12 be used as a direct replacement for the 1N5362B?
No-the 1N5362AE3/TR12 is not a direct replacement for the 1N5362B due to its ±10% voltage tolerance versus the 1N5362B's ±5%. While both share identical 28 V nominal voltage, package, and surge rating, substituting them in precision feedback circuits may cause output voltage deviation beyond design limits. Always verify loop stability and regulation margin before interchange.
What is the maximum reverse leakage current for the 1N5362AE3/TR12, and at what voltage is it tested?
The 1N5362AE3/TR12 specifies a maximum reverse leakage current (IR) of 0.5 µA, tested at a reverse voltage (VR) of 20.1 V-defined as 72% of its nominal Zener voltage (28 V). This low leakage ensures minimal quiescent current draw in high-impedance bias networks and supports reliable operation in battery-powered monitoring circuits.
Is the 1N5362AE3/TR12 suitable for surge protection in telecom applications?
Yes-the 1N5362AE3/TR12 is explicitly rated for 130 A peak surge current (8.3 ms half-sine waveform), making it suitable for primary-level surge suppression in telecom line cards operating on –48 V rails. Its robust construction, low ZZ, and stable ΔVZ ensure consistent clamping behavior across repeated transients without parameter drift.
1N5362AE3/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
1N5362AE3/TR12 FAQ
1.How can I place an order for 1N5362AE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5362AE3/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 1N5362AE3/TR12 reliable?
The price and inventory of 1N5362AE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5362AE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5362AE3/TR12?
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1N5362AE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5362AE3/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 1N5362AE3/TR12?
For technical support, including 1N5362AE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5362AE3/TR12 requirements.
6.How does Aetrix verify that 1N5362AE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5362AE3/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 1N5362AE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5362AE3/TR12?
All 1N5362AE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5362AE3/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 1N5362AE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5362AE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5362AE3/TR12 Tags
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