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Microchip Technology 1N5369CE3/TR13
- Part No.:
- 1N5369CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5369CE3/TR13.pdf
- Description:
- DIODE ZENER 51V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:2,463
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Product details
Overview
1N5369CE3/TR13 from Microsemi is a 51 V, ±2% tolerance, 5 W axial-leaded silicon Zener diode optimized for precision voltage regulation in power supply feedback loops, overvoltage protection circuits, and reference voltage generation. It operates from -65°C to +150°C with 25 °C/W junction-to-lead thermal resistance and supports up to 25 mA test current (IZT) and 230 mA maximum Zener current (IZM).
For engineers reviewing the 1N5369CE3/TR13 datasheet, 1N5369CE3/TR13 pinout, 1N5369CE3/TR13 application, or 1N5369CE3/TR13 equivalent, key selection criteria include its tight ±2% VZ tolerance (C suffix), RoHS-compliant matte-tin plating (e3), tape-and-reel packaging (TR13), low 2.5 Ω dynamic impedance at IZT, and 0.9 V voltage regulation (ΔVZ) across 10–50% of IZM.
Technical Context
This Zener diode functions as a two-terminal shunt regulator, maintaining stable reverse-biased breakdown voltage under varying load and line conditions. Its design centers on low dynamic impedance (2.5 Ω at 25 mA), minimal voltage drift versus current (ΔVZ = 0.9 V), and robust surge capability (230 A peak half-sine, 8.3 ms).
It is rated for 5.0 W steady-state dissipation at 25°C lead temperature (TL), derating linearly above 25°C with 25 °C/W thermal resistance to lead. The device uses a void-free thermosetting epoxy case (UL94V-0), cathode band polarity marking, and meets MIL-STD-750 Method 1020 for ESD insensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 51.0 V ±2% - precise reference point for feedback or clamping at nominal operating current |
| Test Current (IZT) | 25 mA - standardized bias point where VZ and ZZ are guaranteed per JEDEC |
| Dynamic Impedance (ZZ) | 2.5 Ω - low AC resistance ensures minimal output voltage variation under dynamic load changes |
| Max Zener Current (IZM) | 230 mA - maximum continuous DC current sustainable with adequate heat sinking at TL ≤ 25°C |
| Voltage Regulation (ΔVZ) | 0.9 V - difference between VZ measured at 10% and 50% of IZM, indicating regulation stability |
| Thermal Resistance (RθJL) | 25 °C/W - junction-to-lead resistance enables thermal design with 3/8″ (10 mm) lead length from body |
| Surge Current (IZSM) | 230 A - non-repetitive 8.3 ms half-sine peak current rating for transient overvoltage absorption |
| Operating Temperature | -65°C to +150°C - wide range supports industrial, automotive, and aerospace environments |
Pinout & Package
Package: Axial-leaded T-18 plastic case (JEDEC DO-201AD), void-free UL94V-0 epoxy body, tin-lead or RoHS-compliant matte-tin plated leads, cathode indicated by colored band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference | Connected to lower-potential node; reverse-biased operation requires cathode at higher potential |
| Cathode | Zener breakdown terminal / regulation reference node | Banded end; must be held positive relative to anode to activate 51 V breakdown regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables high-accuracy voltage references without external trimming in feedback networks |
| RoHS-compliant matte-tin plating (e3) | Ensures lead-free solder compatibility and long-term reliability per J-STD-020B Level 1 moisture sensitivity |
| Tape-and-reel packaging (TR13) | Supports automated SMT placement despite axial form factor via carrier tape handling |
| 25 °C/W junction-to-lead thermal resistance | Allows 5 W dissipation with simple lead-length heat sinking-no PCB copper pour required |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for pre-assembly ESD handling protocols in production environments |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback paths using optocoupler-coupled error amplification. IC Role / Device Role / Timing Role: Precision shunt reference providing stable 51 V threshold for TL431-type comparators or direct optocoupler biasing. Use Value: ±2% VZ tolerance ensures <±1% output voltage accuracy across line/load/temperature without calibration. | Use Scenario: Protects downstream ICs from transient overvoltage events on 48 V DC bus lines in telecom or industrial control systems. IC Role / Device Role / Timing Role: Fast-acting shunt clamp activated when bus exceeds 51 V, diverting surge energy to ground before damage occurs. Use Value: 230 A surge rating and 0.9 V ΔVZ ensure reliable clamping during 8.3 ms transients without thermal runaway. |
| Programmable Voltage Reference | DC-DC Converter Trim Adjustment |
Use Scenario: Provides stable, temperature-stable reference for DAC-based programmable power supplies requiring 50–52 V setpoints. IC Role / Device Role / Timing Role: Primary voltage reference element in series-pass or switching regulator reference divider networks. Use Value: Low 2.5 Ω dynamic impedance minimizes reference error contribution from load current variations. | Use Scenario: Fine-tunes output voltage of fixed-output DC-DC modules (e.g., 48 V → 51 V) via resistor-divider injection into feedback pin. IC Role / Device Role / Timing Role: Adjustable shunt reference inserted between FB pin and ground to offset feedback voltage. Use Value: Tight ±2% tolerance eliminates need for post-trim calibration, reducing test time and cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5369B | Same 51 V nominal VZ but ±5% tolerance (B suffix) vs. ±2% (C suffix); otherwise identical electrical and thermal specs | Acceptable where tighter regulation not required; lower cost for non-critical references | Select 1N5369B only if system-level voltage accuracy budget allows ±5% variation at 51 V |
| MMSZ5255B-TP | Surface-mount SOD-123 package; 51 V ±5%, 500 mW rating (vs. 5 W); 10x lower IZM (100 mA max) | Limited to low-power signal-level references; unsuitable for power rail clamping or >100 mW dissipation | Choose MMSZ5255B-TP only for space-constrained PCBs where power dissipation remains below 0.5 W |
Compared with 1N5369B and MMSZ5255B-TP, the 1N5369CE3/TR13 delivers superior voltage accuracy (±2%), 10× higher power handling (5 W), and proven surge robustness-making it the only choice for industrial-grade 51 V regulation where precision and ruggedness are co-required.
Availability
1N5369CE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supply feedback, overvoltage protection clamps, and programmable voltage reference designs requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing traceability.
Supply support for 1N5369CE3/TR13 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 engineered for ruggedized, high-stability voltage regulation in mission-critical power systems-emphasizing wide temperature operation, surge resilience, and JEDEC-standardized parametric consistency.
FAQ
What is the Zener voltage tolerance of the 1N5369CE3/TR13?
The 1N5369CE3/TR13 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its regulated voltage falls within 49.98 V to 52.02 V at 25 mA test current and 25°C lead temperature, enabling high-accuracy reference applications without external trimming.
Does the 1N5369CE3/TR13 require dry-pack moisture protection?
No, the 1N5369CE3/TR13 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it is not hygroscopic and does not require dry-packaging or baking prior to assembly. Its void-free epoxy encapsulation inherently prevents moisture ingress during standard reflow or hand-soldering processes.
What is the maximum continuous Zener current for the 1N5369CE3/TR13?
The maximum continuous Zener current (IZM) for the 1N5369CE3/TR13 is 230 mA when operated with lead temperature (TL) maintained at or below 25°C-achieved using ≥10 mm lead length from the body as a heatsink. Derating applies above 25°C at 20 mW/°C based on its 25 °C/W thermal resistance.
Can the 1N5369CE3/TR13 be used in surface-mount designs?
The 1N5369CE3/TR13 itself is axial-leaded (T-18/DO-201AD) and not surface-mount compatible. However, Microsemi offers surface-mount equivalents like SMBJ5369B (SMB package, same 51 V, ±5%)-but no RoHS-compliant ±2% SMT variant exists. For SMT use, redesign with footprint and thermal validation is required.
What does the "TR13" suffix indicate in 1N5369CE3/TR13?
"TR13" indicates tape-and-reel packaging per EIA-296 standard, with 1,300 units per reel. This format enables automated pick-and-place assembly. The "e3" denotes RoHS compliance (matte-tin plating), and "C" specifies ±2% Zener voltage tolerance-making 1N5369CE3/TR13 a fully specified, production-ready variant of the 1N5369 family.
1N5369CE3/TR13 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:
- ±2%
- 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
1N5369CE3/TR13 FAQ
1.How can I place an order for 1N5369CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5369CE3/TR13 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 1N5369CE3/TR13 reliable?
The price and inventory of 1N5369CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5369CE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N5369CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5369CE3/TR13 transactions.
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4.How is shipping managed for 1N5369CE3/TR13?
1N5369CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5369CE3/TR13 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 1N5369CE3/TR13?
For technical support, including 1N5369CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5369CE3/TR13 requirements.
6.How does Aetrix verify that 1N5369CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N5369CE3/TR13 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 1N5369CE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N5369CE3/TR13?
All 1N5369CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5369CE3/TR13, 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 1N5369CE3/TR13 part is unused and in its original packaging.
Return procedure for 1N5369CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5369CE3/TR13 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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