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Microchip Technology 1N5368AE3/TR8
- Part No.:
- 1N5368AE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5368AE3/TR8.pdf
- Description:
- DIODE ZENER 47V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,327
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Product details
Overview
1N5368AE3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 47 V, ±10% tolerance (A suffix), 25 Ω maximum dynamic impedance at 25 mA test current, and 210 A maximum surge current for 8.3 ms. It operates from −65 °C to +150 °C and is used for overvoltage clamping in DC power supply feedback loops.
For engineers reviewing the 1N5368AE3/TR8 datasheet, 1N5368AE3/TR8 pinout, 1N5368AE3/TR8 application, or 1N5368AE3/TR8 equivalent, key selection criteria include Zener voltage tolerance, surge current rating, thermal resistance (25 °C/W junction-to-lead), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a precision voltage reference and transient suppressor in linear regulator circuits and protection networks. Its low 25 °C/W junction-to-lead thermal resistance enables stable 5 W operation with minimal heatsinking when leads are trimmed to 10 mm from body.
It exhibits 0.8 V maximum forward voltage at 1.0 A and maintains voltage regulation within ±2.7 V (ΔVZ) across 10–50% of IZM. The cathode band indicates polarity, requiring reverse-bias connection with banded end positive relative to anode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V ±10% - defines clamping threshold in overvoltage protection circuits |
| Power Dissipation | 5.0 W at TL = 25 °C - supports continuous regulation under adequate lead heatsinking |
| Test Current (IZT) | 25 mA - standard bias point for VZ measurement and impedance characterization |
| Dynamic Impedance (ZZ) | 25 Ω max at IZT - determines regulation stiffness under varying load current |
| Surge Current (IZSM) | 210 A peak (8.3 ms half-sine) - withstands lightning-induced transients in industrial power inputs |
| Voltage Regulation (ΔVZ) | 2.7 V max - quantifies VZ variation between 10% and 50% of IZM |
| Thermal Resistance | 25 °C/W junction-to-lead (3/8″ lead length) - enables thermal design using lead conduction path |
Pinout & Package
Package: Axial-leaded T-18 plastic case (Void-free UL94V-0 epoxy), 0.7 g weight, cathode indicated by colored band. Leads are annealed matte-tin plated per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for reverse-bias operation | Connected to system ground or lower-potential rail during Zener conduction |
| Cathode | Regulated output node | Banded end; connected to input rail to clamp voltage at VZ above anode potential |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant construction | e3 suffix confirms lead-free matte-tin plating and halogen-free epoxy per EU Directive 2011/65/EU |
| Moisture sensitivity level | Level 1 per IPC/JEDEC J-STD-020B - no dry pack required prior to soldering |
| ESD robustness | Nonsensitive per MIL-STD-750 Method 1020 - suitable for handling without special ESD controls |
| High surge endurance | 210 A non-recurrent surge rating - protects downstream circuitry from IEC 61000-4-5 Level 4 transients |
| Stable regulation over temperature | −65 °C to +150 °C operating range - validated for automotive under-hood and industrial motor drive environments |
Applications
| DC Power Supply Feedback | Overvoltage Clamp |
|---|---|
Use Scenario: Regulates output voltage in discrete transistor-based linear power supplies by feeding error signal to pass transistor base. IC Role / Device Role / Timing Role: Voltage reference element providing stable 47 V reference against which output is compared. Use Value: Enables tight output regulation (±2.7 V ΔVZ) despite line/load variations and ambient temperature shifts from −40 °C to +85 °C. | Use Scenario: Limits voltage spikes on 48 V telecom distribution rails caused by inductive switching or lightning surges. IC Role / Device Role / Timing Role: Transient voltage suppression device shunting excess energy to ground when rail exceeds 47 V. Use Value: Absorbs up to 210 A surge (8.3 ms) without failure, protecting downstream DC-DC converters rated for 60 V absolute maximum. |
| Industrial Sensor Excitation | Reference Voltage Source |
Use Scenario: Provides stable excitation voltage for resistive bridge sensors in process control transmitters operating in harsh factory environments. IC Role / Device Role / Timing Role: Precision voltage source delivering constant 47 V to sensor elements independent of supply fluctuations. Use Value: Maintains sensor linearity with <2.7 V regulation drift across full −65 °C to +150 °C range, meeting IEC 61000-6-2 immunity requirements. | Use Scenario: Supplies reference voltage to analog-to-digital converter (ADC) front-end circuits in data acquisition modules. IC Role / Device Role / Timing Role: Low-noise, thermally stable voltage reference for ratiometric measurements. Use Value: Delivers 47 V ±10% with 25 Ω dynamic impedance, minimizing ADC gain error induced by reference loading variations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5368B | Same 47 V nominal VZ, but ±5% tolerance (B suffix) vs. ±10% (A suffix) | Higher precision needed for tighter regulation bands; requires recalculating worst-case clamping margin | Select when system-level tolerance budget demands <±2.35 V deviation at 47 V |
| SMBJ5368B | Surface-mount SMB package; same 47 V ±5%, 5 W rating, but 100 Ω junction-to-ambient thermal resistance vs. 25 Ω junction-to-lead | Requires PCB copper area for thermal management instead of lead conduction; not axial-mount compatible | Choose for automated SMT assembly where board space is constrained and thermal pad layout is feasible |
Compared with 1N5368AE3/TR8, the 1N5368B offers tighter voltage tolerance at identical power and thermal performance, while SMBJ5368B trades axial mounting and superior lead-based cooling for surface-mount compatibility and higher board-level integration density.
Availability
1N5368AE3/TR8 is available at Aetrix Electronics and suitable for DC power supply feedback, overvoltage clamp, and industrial sensor excitation requiring stable component supply across extended temperature ranges and high-reliability manufacturing programs.
Supply support for 1N5368AE3/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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N53xx series targets ruggedized voltage regulation and transient suppression in mission-critical power systems where long-term stability and surge survivability are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N5368AE3/TR8?
The 1N5368AE3/TR8 has a Zener voltage tolerance of ±10%, indicated by the "A" suffix in its part number. This means its actual regulation voltage falls between 42.3 V and 51.7 V at 25 °C with 25 mA test current. This tolerance is confirmed in the manufacturer's electrical characteristics table and applies across the full operating temperature range of −65 °C to +150 °C.
Does the 1N5368AE3/TR8 require dry packing before soldering?
No, the 1N5368AE3/TR8 does not require dry packing. It carries moisture sensitivity level (MSL) 1 per IPC/JEDEC J-STD-020B, meaning it is exempt from baking or dry-pack requirements prior to reflow or hand soldering. This is due to its void-free thermosetting epoxy encapsulation and verified moisture resistance.
What is the maximum surge current rating for the 1N5368AE3/TR8?
The 1N5368AE3/TR8 has a maximum non-recurrent surge current (IZSM) rating of 210 A for an 8.3 ms half-sine waveform. This value is specified in the manufacturer's electrical characteristics table and reflects its capability to absorb transient energy without parametric shift or catastrophic failure in industrial power interface applications.
How is polarity marked on the 1N5368AE3/TR8?
The 1N5368AE3/TR8 uses a cathode band to indicate polarity: the banded end is the cathode and must be connected to the higher-potential side of the circuit during Zener operation. This marking is consistent across all 1N53xx series devices and is visible on the axial plastic body per JEDEC T-18 outline specifications.
What does the "e3" and "TR8" suffix mean in 1N5368AE3/TR8?
The "e3" suffix denotes RoHS compliance with lead-free matte-tin plating and halogen-free epoxy, while "TR8" indicates tape-and-reel packaging per EIA-296 standard with 8 mm tape width and 1000 units per reel. Both suffixes are defined in Microsemi's official documentation and directly impact environmental compliance and automated assembly compatibility.
1N5368AE3/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):
- 47 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 33.8 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
1N5368AE3/TR8 FAQ
1.How can I place an order for 1N5368AE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5368AE3/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 1N5368AE3/TR8 reliable?
The price and inventory of 1N5368AE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5368AE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5368AE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5368AE3/TR8 transactions.
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4.How is shipping managed for 1N5368AE3/TR8?
1N5368AE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5368AE3/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 1N5368AE3/TR8?
For technical support, including 1N5368AE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5368AE3/TR8 requirements.
6.How does Aetrix verify that 1N5368AE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5368AE3/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 1N5368AE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5368AE3/TR8?
All 1N5368AE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5368AE3/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 1N5368AE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5368AE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5368AE3/TR8 Tags
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