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Microchip Technology 1N5369CE3/TR12
- Part No.:
- 1N5369CE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5369CE3/TR12.pdf
- Description:
- DIODE ZENER 51V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,430
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Product details
Overview
1N5369CE3/TR12 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 delivers 25 Ω dynamic impedance at 25 mA test current, supports 25 °C/W junction-to-lead thermal resistance with 3/8" lead length, and operates across –65 °C to +150 °C.
For engineers reviewing the 1N5369CE3/TR12 datasheet, 1N5369CE3/TR12 pinout, 1N5369CE3/TR12 application, or 1N5369CE3/TR12 equivalent, key selection criteria include verified ±2% VZ tolerance (C suffix), RoHS-compliant matte-tin plating (e3), tape-and-reel packaging (TR12), and 25 mA IZT test current for stable regulation under load variation.
Technical Context
This Zener operates in reverse-biased breakdown mode with a nominal zener voltage of 51 V measured at 25 mA (IZT) and 25 °C lead temperature. Its 25 Ω dynamic impedance (ZZ) ensures minimal voltage deviation across regulated current changes, while its 25 °C/W thermal resistance enables reliable 5 W dissipation when leads are mounted with ≥10 mm length from body.
The device uses a void-free thermosetting epoxy case (UL94V-0), cathode-indicating band polarity, and meets MIL-STD-750 Method 1020 for ESD insensitivity. It is rated for 260 °C soldering (10 s max) and exhibits 0.9 V maximum forward voltage at 1.0 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 51 V ±2% - precise regulation point for feedback networks requiring tight voltage reference stability. |
| Test Current (IZT) | 25 mA - standardized bias condition for VZ measurement and impedance characterization. |
| Dynamic Impedance (ZZ) | 27 Ω - low AC resistance ensures <0.7 V deviation across 10–50% of IZM (ΔVZ = 0.9 V). |
| Max Power Dissipation | 5.0 W at TL = 25 °C with 3/8" lead length - defines safe continuous DC operating limit with adequate heatsinking. |
| Thermal Resistance | 25 °C/W junction-to-lead - enables thermal design using lead length as primary heat path, not PCB copper area. |
| Reverse Leakage (IR) | 0.5 μA @ 40.8 V - ultra-low leakage preserves regulation accuracy in high-impedance bias networks. |
| Surge Current (IZSM) | 230 A (8.3 ms half-sine) - withstands transient overvoltage events without degradation. |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free UL94V-0 epoxy), cathode identified by color band. Leads are annealed matte-tin plated (RoHS-compliant per e3 suffix), solderable per MIL-STD-750 Method 2026. Weight: 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to circuit ground or lower-potential rail; serves as reference return path in shunt regulator topologies. |
| Cathode | Zener breakdown terminal / regulated output node | Banded end; connected to unregulated input; maintains 51 V relative to anode under reverse bias above knee voltage. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables direct use in precision feedback paths without external trimming resistors or calibration. |
| RoHS-compliant matte-tin plating (e3) | Ensures compatibility with lead-free reflow processes and eliminates Pb-based solder joint reliability concerns. |
| Tape-and-reel packaging (TR12) | Supports automated SMT placement despite axial form factor-ideal for hybrid board assembly lines. |
| 25 °C/W junction-to-lead thermal resistance | Allows full 5 W operation using standard lead-forming and chassis-mount heatsinking, bypassing complex PCB thermal pads. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for handling precautions or on-board ESD protection in final assembly environments. |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converter secondary-side feedback loop via optocoupler interface. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 51 V threshold to TL431-like control IC or discrete transistor comparator. Use Value: ±2% tolerance ensures <±0.5% output voltage drift across line/load/temperature, meeting industrial PSU specs. |
Use Scenario: Protects downstream 48 V telecom equipment inputs from surge-induced overvoltage transients. IC Role / Device Role / Timing Role: Fast-acting crowbar element clamping bus voltage to 51 V before damage threshold of protected ICs. Use Value: 230 A surge rating absorbs 8.3 ms transients without parametric shift, preserving long-term reliability. |
| Programmable Reference Generator | Industrial Sensor Excitation |
Use Scenario: Generates stable excitation voltage for precision RTD or strain gauge bridges in data acquisition modules. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source referenced to system ground in ratiometric measurement chains. Use Value: 27 Ω ZZ and 0.5 μA IR minimize loading error and self-heating drift in high-impedance bridge arms. |
Use Scenario: Supplies constant-voltage bias to 4–20 mA transmitter front-end circuitry in hazardous-area process controllers. IC Role / Device Role / Timing Role: Primary voltage reference for current-loop DAC and op-amp conditioning stages. Use Value: –65 °C to +150 °C operating range supports deployment in oil/gas downhole or outdoor enclosure environments. |
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 | ±5% VZ tolerance (B suffix), same 51 V nominal, identical package and thermal specs. | Acceptable where cost sensitivity outweighs precision; requires tighter input filtering or post-regulation correction. | Select 1N5369B only if system-level tolerance budget allows ±5% reference error. |
| MMSZ5255B-TP | Surface-mount SOD-123 package, 50 V ±5%, 500 mW rating, 17 Ω ZZ at 20 mA. | Not suitable for 5 W continuous dissipation; limited to low-power bias/reference roles in space-constrained designs. | Choose MMSZ5255B-TP only for PCB area-limited applications with <100 mW average power demand. |
Compared with 1N5369CE3/TR12, 1N5369B trades ±2% precision for lower cost in legacy axial designs, while MMSZ5255B-TP offers footprint reduction at the expense of power handling and tolerance-neither is pin-compatible, and both require layout or thermal redesign.
Availability
1N5369CE3/TR12 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, programmable reference generators, and industrial sensor excitation systems requiring stable component supply with RoHS compliance and tape-and-reel automation support.
Supply support for 1N5369CE3/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 1N53xxB series was engineered for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal robustness, surge resilience, and long-term parametric stability under extended temperature cycling.
FAQ
What is the Zener voltage tolerance of the 1N5369CE3/TR12?
The 1N5369CE3/TR12 has a ±2% Zener voltage tolerance, indicated by the "C" suffix in its part number. This means its actual breakdown voltage falls within 49.98 V to 52.02 V at 25 mA test current and 25 °C lead temperature, enabling high-accuracy regulation without external trimming.
Does the 1N5369CE3/TR12 support lead-free soldering processes?
Yes, the 1N5369CE3/TR12 is RoHS-compliant with matte-tin plating (e3 suffix) and rated for 260 °C peak solder temperature for 10 seconds, fully compatible with standard lead-free reflow profiles used in modern electronics manufacturing.
What is the maximum continuous power dissipation for the 1N5369CE3/TR12?
The 1N5369CE3/TR12 is rated for 5.0 W continuous power dissipation at 25 °C lead temperature (TL) with 3/8" (10 mm) lead length from the body. Derating is required above 25 °C per the published thermal curve, reaching zero watt capability at 150 °C TL.
How is polarity marked on the 1N5369CE3/TR12?
The 1N5369CE3/TR12 uses a cathode band marking: the banded end is the cathode and must be held at a higher potential than the anode to achieve Zener breakdown. Forward conduction occurs when the banded end is negative relative to the other lead.
What does the "TR12" suffix indicate in 1N5369CE3/TR12?
The "TR12" suffix denotes tape-and-reel packaging per EIA-296 standards, with 12 mm tape width and standard orientation for automated pick-and-place equipment. This enables high-throughput assembly of the axial-leaded 1N5369CE3/TR12 alongside surface-mount components.
1N5369CE3/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):
- 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/TR12 FAQ
1.How can I place an order for 1N5369CE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5369CE3/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 1N5369CE3/TR12 reliable?
The price and inventory of 1N5369CE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5369CE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5369CE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5369CE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5369CE3/TR12?
1N5369CE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5369CE3/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 1N5369CE3/TR12?
For technical support, including 1N5369CE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5369CE3/TR12 requirements.
6.How does Aetrix verify that 1N5369CE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5369CE3/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 1N5369CE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5369CE3/TR12?
All 1N5369CE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5369CE3/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 1N5369CE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5369CE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5369CE3/TR12 Tags
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MM5Z5V1ST1G
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