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Microchip Technology 1N5352CE3/TR12
- Part No.:
- 1N5352CE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5352CE3/TR12.pdf
- Description:
- DIODE ZENER 15V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:8,323
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Product details
Overview
1N5352CE3/TR12 from Microsemi is a 15 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 stable regulation across -65°C to +150°C, supports 75 mA maximum Zener current (IZM), and features 2.5 Ω dynamic impedance at 100 mA test current.
For engineers reviewing the 1N5352CE3/TR12 datasheet, 1N5352CE3/TR12 pinout, 1N5352CE3/TR12 application, or 1N5352CE3/TR12 equivalent, key selection criteria include Zener voltage tolerance (±2%), thermal resistance (25 °C/W junction-to-lead), surge current rating (6.3 A), voltage regulation (ΔVZ = 0.25 V), and RoHS-compliant matte-tin plating.
Technical Context
This device operates as a two-terminal voltage reference, conducting in reverse breakdown when cathode voltage exceeds anode by ≥15 V. Its low dynamic impedance (2.5 Ω) and tight ±2% tolerance ensure minimal output variation under load changes and temperature drift.
Designed for axial-lead mounting with T-18 package, it achieves 5 W steady-state dissipation at 25°C lead temperature (3/8" from body) and derates linearly above that point. The 25 °C/W junction-to-lead thermal resistance enables reliable operation with modest heatsinking in industrial power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15 V ±2% - precise reference for feedback networks requiring stable 15 V regulation |
| Power Dissipation | 5.0 W at TL = 25°C - supports high-current regulation without forced cooling |
| Test Current (IZT) | 75 mA - operating point where VZ and ZZ are specified; matches typical SMPS feedback current |
| Dynamic Impedance (ZZ) | 2.5 Ω at IZT - ensures <0.2 V output shift for ±30 mA load transients |
| Max Surge Current (IZSM) | 6.3 A (8.3 ms half-sine) - withstands common AC line surge events |
| Voltage Regulation (ΔVZ) | 0.25 V - difference between VZ at 10% and 50% of IZM; quantifies regulation linearity |
| Thermal Resistance | 25 °C/W junction-to-lead - enables thermal design with standard PCB copper pads |
| Reverse Leakage (IR) | 1.0 μA at VR = 10.8 V - negligible error contribution in high-impedance bias networks |
Pinout & Package
Package: T-18 axial-leaded plastic case per JEDEC DO-204AL, void-free UL94V-0 epoxy body, cathode indicated by band, 0.7 g weight, RoHS-compliant matte-tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail; defines 0 V reference for Zener operation |
| Cathode | Regulated output node | Banded end; maintains 15 V above anode when reverse-biased; feeds feedback divider or clamp circuit |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener tolerance (C suffix) | Reduces need for post-production trimming in precision 15 V references |
| 25 °C/W junction-to-lead thermal resistance | Enables 5 W operation with simple lead-length heatsinking-no PCB copper pour required |
| RoHS-compliant e3 suffix | Meets global environmental compliance without performance trade-offs |
| JEDEC-registered 1N53xxB series | Guarantees standardized mechanical dimensions and electrical behavior across suppliers |
| Level 1 moisture sensitivity | Eliminates dry-pack requirement and bake-out prior to assembly |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp Circuit |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Provides stable 15 V reference to TL431 or similar shunt regulator IC. Use Value: ±2% tolerance ensures output stays within ±1% of nominal over temperature and line variations. | Use Scenario: Protects downstream 15 V logic rails from transient overvoltage events on DC input lines. IC Role / Device Role / Timing Role: Acts as two-terminal crowbar element clamping voltage at 15.3 V (max VZ). Use Value: 6.3 A surge rating absorbs 100 J surges without failure per IEC 61000-4-5 Level 3. |
| Industrial Sensor Reference | Programmable Logic Controller Input Protection |
Use Scenario: Supplies excitation voltage to 4–20 mA current-loop sensors in harsh factory environments. IC Role / Device Role / Timing Role: Serves as primary 15 V reference for DAC-based sensor excitation circuitry. Use Value: -65°C to +150°C operating range ensures reliability in uncontrolled ambient enclosures. | Use Scenario: Shields PLC analog input channels from field-wiring induced transients and ESD. IC Role / Device Role / Timing Role: Shunts excess energy to ground before reaching sensitive ADC front-end. Use Value: Low 2.5 Ω dynamic impedance limits clamping overshoot to <16 V during fast transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5352B | Same 15 V nominal, but ±5% tolerance (B suffix) vs. ±2% (C suffix) | Higher voltage uncertainty requires tighter feedback compensation or calibration | Select when cost priority outweighs precision; not suitable for closed-loop systems needing <±0.5% output accuracy |
| MMSZ5245B-TP | Surface-mount SOD-123 package, same 15 V ±5%, 500 mW rating (not 5 W) | Limited to low-power signal-level regulation; cannot replace in power-stage clamping | Choose only for space-constrained PCBs where thermal load is <0.5 W; verify derating curves for ambient temperature |
Compared with 1N5352B and MMSZ5245B-TP, the 1N5352CE3/TR12 uniquely combines 5 W power handling, ±2% tolerance, axial-leaded T-18 packaging, and RoHS compliance-making it the sole option for high-reliability 15 V regulation in industrial power supplies requiring long-term stability and surge resilience.
Availability
1N5352CE3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, programmable logic controller (PLC) input protection, and sensor reference circuits requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for 1N5352CE3/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 mission-critical power systems, emphasizing thermal robustness, surge immunity, and long-term parametric stability under extended temperature cycling.
FAQ
What is the Zener voltage tolerance of the 1N5352CE3/TR12?
The 1N5352CE3/TR12 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its measured breakdown voltage at 75 mA test current falls between 14.7 V and 15.3 V at 25°C lead temperature. This tight tolerance supports precision regulation in feedback paths where output accuracy is critical, such as in medical-grade power supplies or calibrated instrumentation.
Does the 1N5352CE3/TR12 require dry packing before PCB assembly?
No, the 1N5352CE3/TR12 does not require dry packing. It carries IPC/JEDEC J-STD-020B moisture sensitivity level (MSL) 1, meaning it is non-hygroscopic and can be stored and assembled without baking or humidity-controlled packaging. This simplifies manufacturing logistics and eliminates risk of popcorning during reflow, consistent with its void-free UL94V-0 epoxy encapsulation.
What is the maximum surge current rating for the 1N5352CE3/TR12?
The 1N5352CE3/TR12 is rated for a maximum non-recurrent surge current (IZSM) of 6.3 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient energy without degradation, making it suitable for protecting 15 V rails against lightning-induced surges or inductive switching spikes in motor drive or relay control circuits.
How does the thermal resistance of the 1N5352CE3/TR12 affect PCB layout?
The 1N5352CE3/TR12 has a junction-to-lead thermal resistance of 25 °C/W when measured at 3/8" (10 mm) lead length from the body. This allows full 5 W dissipation with minimal heatsinking-simply maintaining ≥10 mm straight lead length between the diode body and PCB pad suffices. No large copper pours or thermal vias are required, simplifying layout for high-voltage isolation zones.
Is the 1N5352CE3/TR12 compatible with lead-free reflow processes?
Yes, the 1N5352CE3/TR12 features RoHS-compliant annealed matte-tin plating and is rated for solder temperatures up to 260°C for 10 seconds, fully compatible with standard lead-free reflow profiles (e.g., JEDEC J-STD-020). Its UL94V-0 epoxy body remains stable under these conditions, ensuring no delamination or marking loss during assembly.
1N5352CE3/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):
- 15 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 10.8 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
1N5352CE3/TR12 FAQ
1.How can I place an order for 1N5352CE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5352CE3/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 1N5352CE3/TR12 reliable?
The price and inventory of 1N5352CE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5352CE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5352CE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5352CE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5352CE3/TR12?
1N5352CE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5352CE3/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 1N5352CE3/TR12?
For technical support, including 1N5352CE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5352CE3/TR12 requirements.
6.How does Aetrix verify that 1N5352CE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5352CE3/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 1N5352CE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5352CE3/TR12?
All 1N5352CE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5352CE3/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 1N5352CE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5352CE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5352CE3/TR12 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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