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Microchip Technology 1N5350C/TR12
- Part No.:
- 1N5350C/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5350C/TR12.pdf
- Description:
- DIODE ZENER 13V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,550
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Product details
Overview
1N5350C/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with a nominal regulation voltage of 13 V, ±2% tolerance (C suffix), 100 mA maximum regulator current (IZM), 2.5 Ω maximum dynamic impedance (ZZ), and 0.25 V maximum voltage regulation (ΔVZ). It operates across –65°C to +150°C and is used for precision voltage reference and overvoltage protection in industrial power supplies.
For engineers reviewing the 1N5350C/TR12 datasheet, 1N5350C/TR12 pinout, 1N5350C/TR12 application, or 1N5350C/TR12 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (7.0 A), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal voltage reference by operating in reverse breakdown, maintaining stable output voltage across a wide current range (100 mA IZM at TL = 25°C). Its low dynamic impedance (2.5 Ω) and tight ±2% voltage tolerance ensure minimal deviation under load variation and temperature drift.
The 1N5350C/TR12 uses a void-free thermosetting epoxy T-18 package with cathode band marking, rated for 5 W steady-state dissipation at 25°C lead temperature and derated linearly above that point. It meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack requirement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13 V ±2% - precise regulation point for feedback loops and reference circuits |
| Test Current (IZT) | 100 mA - standardized bias point for VZ measurement and impedance characterization |
| Dynamic Impedance (ZZ) | 2.5 Ω max - low AC resistance ensures stable voltage under dynamic load changes |
| Max Regulator Current (IZM) | 100 mA - maximum continuous DC current before thermal limit at TL = 25°C |
| Voltage Regulation (ΔVZ) | 0.25 V max - difference between VZ measured at 10% and 50% of IZM, indicating regulation linearity |
| Surge Current (IZSM) | 7.0 A - peak non-repetitive half-sine (8.3 ms) capability for transient suppression |
| Thermal Resistance | 25 °C/W junction-to-lead - enables high-power operation with minimal heatsinking at 3/8″ lead length |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case (void-free UL94V-0 epoxy), cathode indicated by colored band; leads plated with RoHS-compliant matte tin per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / reverse-bias reference ground node | Connected to circuit ground or lower-potential rail when used in shunt regulation |
| Cathode | Zener breakdown terminal / regulated output node | Banded end; connected to input voltage source and load reference point |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables tighter feedback loop control vs. ±5% (B) or ±10% (A) variants in precision supplies |
| 25 °C/W junction-to-lead thermal resistance | Supports full 5 W dissipation with simple lead-length heatsinking-no PCB copper pour required |
| Level 1 moisture sensitivity (J-STD-020B) | Eliminates dry-pack requirement and bake-out prior to assembly, reducing manufacturing cost |
| RoHS-compliant e3 marking | Confirms lead-free matte-tin plating compatible with Pb-free reflow profiles up to 260°C/10 s |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates need for ESD-safe packaging in production |
Applications
| Industrial Power Supply Reference | Overvoltage Clamp in Telecom Line Cards |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated 48 V DC-DC converters for factory automation controllers. IC Role / Device Role / Timing Role: Shunt voltage reference providing error signal to PWM controller IC. Use Value: ±2% VZ tolerance and 0.25 V ΔVZ ensure <±0.3% output regulation drift across 0–100% load and –40°C to +85°C ambient. | Use Scenario: Protecting line interface ICs from lightning-induced surges on POTS or xDSL ports. IC Role / Device Role / Timing Role: Transient voltage clamp absorbing 7.0 A surge peaks without failure. Use Value: 7.0 A IZSM rating and 13 V clamping threshold prevent damage to downstream PHY transceivers during ITU-T K.21 tests. |
| Programmable Logic Controller (PLC) Input Protection | Test Equipment Voltage Calibration Reference |
Use Scenario: Safeguarding 24 V digital input channels against field-wiring faults and back-EMF spikes. IC Role / Device Role / Timing Role: Reverse-biased Zener limiting input voltage to safe levels for optocoupler drivers. Use Value: 2.5 Ω ZZ and 100 mA IZM allow fast response to >100 V transients while maintaining <13.5 V clamping under sustained overvoltage. | Use Scenario: Providing traceable 13.00 V reference in benchtop multimeter calibration fixtures. IC Role / Device Role / Timing Role: Precision shunt reference replacing bulkier active references in portable calibrators. Use Value: ±2% initial tolerance and <0.25 V ΔVZ enable 13.00 V ±0.26 V accuracy at 10–50 mA operating current, meeting ANSI/NCSL Z540 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5350B/TR12 | ±5% VZ tolerance (vs. ±2% for 1N5350C/TR12); identical VZ nominal, IZT, ZZ, IZM, and package | Acceptable where system-level regulation budget allows ±0.65 V deviation instead of ±0.26 V | Select 1N5350B/TR12 for cost-sensitive designs where tighter tolerance is not required for closed-loop stability |
| MMBZ5243BS-7-F | Surface-mount SOD-123 package; 13 V ±5%, 200 mW rating (vs. 5 W axial); higher ZZ (30 Ω) | Limited to low-power signal-level clamping-not suitable for power rail regulation or surge absorption | Choose MMBZ5243BS-7-F only for space-constrained PCBs with <50 mA load current and no surge exposure |
Compared with 1N5350B/TR12 and MMBZ5243BS-7-F, the 1N5350C/TR12 delivers superior voltage accuracy and power-handling capability-critical for industrial power supplies requiring long-term stability and robustness against line transients.
Availability
1N5350C/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, telecom line protection, PLC input conditioning, and test equipment calibration requiring stable component supply and long-lifecycle support.
Supply support for 1N5350C/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/C series was designed 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 1N5350C/TR12?
The 1N5350C/TR12 has a Zener voltage tolerance of ±2%, as indicated by the "C" suffix per Microsemi's documentation. This means its actual regulation voltage falls within 12.74 V to 13.26 V at 100 mA test current and 25°C lead temperature. The tighter tolerance supports precision feedback in regulated power supplies where output accuracy directly impacts system performance. This specification is verified in the Electrical Characteristics table on page 1 of the official datasheet.
Does the 1N5350C/TR12 require dry packing before PCB assembly?
No, the 1N5350C/TR12 does not require dry packing before PCB assembly. It carries IPC/JEDEC J-STD-020B Level 1 moisture sensitivity classification, meaning it is not hygroscopic and can be stored and processed without baking or humidity-controlled packaging. This simplifies manufacturing logistics and reduces risk of popcorning during reflow. The T-18 epoxy body contributes to this robust moisture resistance, as confirmed in the Mechanical and Packaging section of the datasheet.
What is the maximum surge current rating for the 1N5350C/TR12?
The 1N5350C/TR12 has a maximum non-repetitive surge current (IZSM) rating of 7.0 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient energy without failure-critical for overvoltage protection in industrial environments. The surge capability is enabled by its 5 W power rating and low thermal resistance (25 °C/W junction-to-lead), allowing rapid heat dissipation during short-duration events.
How does the dynamic impedance of the 1N5350C/TR12 affect its regulation performance?
The 1N5350C/TR12 has a maximum dynamic impedance (ZZ) of 2.5 Ω, measured at 1 kHz with 10% AC ripple superimposed on 100 mA DC test current. This low impedance ensures minimal voltage deviation under varying load conditions-e.g., a 50 mA load step causes only ~125 mV shift in output. That behavior makes the 1N5350C/TR12 suitable for applications demanding stable reference voltages, such as feedback networks in switching regulators where loop stability depends on reference rigidity.
Is the 1N5350C/TR12 RoHS compliant?
Yes, the 1N5350C/TR12 is RoHS compliant, as indicated by the "e3" suffix in its full ordering designation (1N5350C/TR12 e3). It features RoHS-compliant annealed matte-tin plating on leads, qualified per MIL-STD-750 Method 2026, and is compatible with Pb-free reflow soldering profiles up to 260°C for 10 seconds. Compliance is documented in the Features section and confirmed on Microsemi's official product page and distributor listings.
1N5350C/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):
- 13 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 9.4 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
1N5350C/TR12 FAQ
1.How can I place an order for 1N5350C/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5350C/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 1N5350C/TR12 reliable?
The price and inventory of 1N5350C/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5350C/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5350C/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5350C/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5350C/TR12?
1N5350C/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5350C/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 1N5350C/TR12?
For technical support, including 1N5350C/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5350C/TR12 requirements.
6.How does Aetrix verify that 1N5350C/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5350C/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 1N5350C/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5350C/TR12?
All 1N5350C/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5350C/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 1N5350C/TR12 part is unused and in its original packaging.
Return procedure for 1N5350C/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5350C/TR12 Tags
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