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Microchip Technology 1N5369AE3/TR8
- Part No.:
- 1N5369AE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5369AE3/TR8.pdf
- Description:
- DIODE ZENER 51V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:6,463
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Product details
Overview
1N5369AE3/TR8 from Microsemi is a 51 V, ±10% tolerance, 5 W axial-leaded silicon Zener diode optimized for voltage regulation in power supply feedback loops, overvoltage protection circuits, and precision reference applications. It delivers 25 mA test current, 27 Ω dynamic impedance at 25 °C, and supports steady-state operation up to 150 °C with 25 °C/W junction-to-lead thermal resistance.
For engineers reviewing the 1N5369AE3/TR8 datasheet, 1N5369AE3/TR8 pinout, 1N5369AE3/TR8 application, or 1N5369AE3/TR8 equivalent, key selection criteria include Zener voltage accuracy, surge current capability (230 A), voltage regulation (ΔVZ = 0.9 V), and RoHS-compliant matte-tin plating for reliable solderability per MIL-STD-750.
Technical Context
This device operates as a two-terminal voltage reference with cathode-banded polarity, requiring reverse-bias connection where the banded end is positive relative to the anode. Its regulation performance is specified at 25 °C lead temperature (TL), with derated power dissipation above 25 °C following a linear curve down to zero at 150 °C.
The 1N5369AE3/TR8 exhibits low dynamic impedance (27 Ω) at IZT = 25 mA and maintains stable regulation across 10–50% of IZM (100 mA), yielding ΔVZ = 0.9 V. It withstands non-repetitive 8.3 ms half-sine surge currents up to 230 A and shows minimal capacitance variation versus reverse voltage per typical characterization curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 51 V ±10% - defines nominal regulation point under 25 mA DC test current |
| Power Dissipation (Pd) | 5.0 W at TL = 25 °C - requires heat sinking beyond 3/8" lead length for full rating |
| Dynamic Impedance (ZZ) | 27 Ω at IZT = 25 mA - determines output voltage stability under load transients |
| Max Surge Current (IZSM) | 230 A (8.3 ms half-sine) - enables robust transient overvoltage clamping |
| Voltage Regulation (ΔVZ) | 0.9 V - difference between VZ measured at 10% and 50% of IZM (100 mA) |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - supports thermal design with 3/8" (10 mm) lead length |
| Operating Temperature | −65 °C to +150 °C - suitable for industrial and automotive under-hood environments |
Pinout & Package
Package: Axial-leaded T-18 plastic case (Void-free transfer-molded thermosetting epoxy, UL94V-0 rated); leads plated with RoHS-compliant annealed matte tin; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Current entry terminal in forward bias; reference ground node in reverse-bias regulation | Connected to system ground or lower-potential rail when used as shunt regulator |
| Cathode (banded end) | Current exit terminal in forward bias; regulated output node in reverse bias | Connected to voltage node requiring stabilization; must be held at higher potential than anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N53xxB series | Industry-standard footprint and electrical behavior enabling cross-manufacturer sourcing |
| RoHS-compliant e3 suffix | Lead-free matte-tin plating compatible with Pb-free reflow and wave soldering processes |
| Level 1 moisture sensitivity | No dry pack required - simplifies handling and eliminates bake-out prior to assembly |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Robust handling in standard manufacturing without special ESD controls |
| High surge current rating | 230 A peak enables single-device transient suppression without external crowbar circuitry |
Applications
| Switch-Mode Power Supply Feedback | Industrial Overvoltage Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converter feedback path via optocoupler interface. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 51 V threshold for error amplifier comparison. Use Value: Maintains ±10% output regulation across line/load/temperature with 0.9 V ΔVZ and 27 Ω ZZ. | Use Scenario: Protects 48 V DC bus against lightning-induced surges in factory automation controllers. IC Role / Device Role / Timing Role: Fast-acting shunt clamp diverting excess energy to ground during transient events. Use Value: Withstands 230 A 8.3 ms surges without degradation, eliminating need for parallel TVS arrays. |
| Programmable Reference Source | DC Link Voltage Monitor |
Use Scenario: Serves as stable reference for DAC-based programmable power supply setpoint generation. IC Role / Device Role / Timing Role: Precision Zener element establishing fixed 51 V reference for analog control loop. Use Value: Delivers <1% drift over −40 °C to +85 °C due to low thermal resistance (25 °C/W). | Use Scenario: Monitors high-voltage DC link (e.g., 60 V nominal) in motor drive inverters for overvoltage shutdown. IC Role / Device Role / Timing Role: Threshold detector triggering protection logic when voltage exceeds safe limit. Use Value: Enables fast response with 0.5 μA reverse leakage at VR = 41 V, minimizing standby power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5369B | Same 51 V, ±5% tolerance; identical package and thermal specs; no e3 RoHS suffix | Non-RoHS version; requires SnPb solder process or legacy compliance exemption | Select when leaded assembly or MIL-PRF-19500 screening (e.g., JANTXV prefix) is required |
| SMBJ5369B | Surface-mount SMB package; same 51 V, ±5%; 1.47 W power rating at TA = 25 °C | Lower power density; suited for space-constrained PCBs but requires thermal pad design | Select for automated SMT production where board area is constrained and 1.47 W suffices |
Compared with 1N5369AE3/TR8, the 1N5369B offers tighter voltage tolerance (±5% vs. ±10%) but lacks RoHS compliance, while SMBJ5369B provides SMT compatibility at reduced power handling-requiring careful thermal layout versus the axial-leaded 5 W rating.
Availability
1N5369AE3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, telecom rectifiers, and automotive body control modules requiring stable component supply, long-term obsolescence management, and traceable RoHS-compliant sourcing.
Supply support for 1N5369AE3/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, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The 1N53xxB series was designed for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal robustness, surge resilience, and JEDEC-standard interoperability.
FAQ
What is the Zener voltage tolerance of the 1N5369AE3/TR8?
The 1N5369AE3/TR8 has a Zener voltage tolerance of ±10%, as indicated by the "A" suffix in its part number. This means its nominal 51 V regulation point falls within 45.9 V to 56.1 V at 25 °C lead temperature under 25 mA test current, per Microsemi's REV D datasheet.
Does the 1N5369AE3/TR8 require dry packing before PCB assembly?
No, the 1N5369AE3/TR8 does not require dry packing. It carries IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it can be stored and assembled without baking or humidity-controlled packaging-reducing manufacturing overhead and handling risk.
What is the maximum surge current rating for the 1N5369AE3/TR8?
The 1N5369AE3/TR8 is rated for a maximum non-repetitive surge current (IZSM) of 230 A, defined as the peak of an 8.3 ms half-sine waveform. This value is confirmed in the Electrical Characteristics table on page 2 of the official Microsemi datasheet (REV D, 2008).
How is polarity marked on the 1N5369AE3/TR8?
The 1N5369AE3/TR8 uses a cathode band for polarity identification: the banded end is the cathode and must be held at a higher potential than the unbanded (anode) end when operating in reverse-bias regulation mode. This marking is consistent across the entire 1N5333B–1N5388B family.
What does the "TR8" suffix indicate in 1N5369AE3/TR8?
"TR8" indicates tape-and-reel packaging per EIA-296 standard, with 800 units per reel. This format supports automated pick-and-place assembly and is distinct from bulk or ammo-pack options-ensuring consistent feeding and traceability in high-volume production.
1N5369AE3/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):
- 51 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 27 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 36.7 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
1N5369AE3/TR8 FAQ
1.How can I place an order for 1N5369AE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5369AE3/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 1N5369AE3/TR8 reliable?
The price and inventory of 1N5369AE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5369AE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5369AE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5369AE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5369AE3/TR8?
1N5369AE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5369AE3/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 1N5369AE3/TR8?
For technical support, including 1N5369AE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5369AE3/TR8 requirements.
6.How does Aetrix verify that 1N5369AE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5369AE3/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 1N5369AE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5369AE3/TR8?
All 1N5369AE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5369AE3/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 1N5369AE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5369AE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5369AE3/TR8 Tags
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