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Microchip Technology 1N5350CE3/TR12
- Part No.:
- 1N5350CE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5350CE3/TR12.pdf
- Description:
- DIODE ZENER 13V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:2,998
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Product details
Overview
1N5350CE3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 11 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 provides stable voltage reference in power supply feedback loops, overvoltage protection circuits, and precision biasing networks.
For engineers reviewing the 1N5350CE3/TR12 datasheet, 1N5350CE3/TR12 pinout, 1N5350CE3/TR12 application, or 1N5350CE3/TR12 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (8.0 A), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device operates as a reverse-biased voltage reference with specified test current (IZT) of 100 mA and knee current (IZK) of 1.0 mA. Its regulation performance is characterized by low ΔVZ (0.25 V) across 10–50% IZM and tight ±2% VZ tolerance at TL = 25 °C.
The 1N5350CE3/TR12 uses a void-free thermosetting epoxy T-18 package with cathode band polarity marking, rated for -65 °C to +150 °C operation and moisture sensitivity Level 1 per J-STD-020B - no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11 V ±2% - precise reference for feedback and clamping at nominal 11 V |
| Power Dissipation | 5.0 W at TL < 25 °C (3/8″ lead length) - requires heatsinking above ambient derating threshold |
| Test Current (IZT) | 100 mA - operating point where VZ and ZZ are specified |
| Dynamic Impedance (ZZ) | 2.5 Ω max - low AC impedance ensures minimal voltage shift under load transients |
| Voltage Regulation (ΔVZ) | 0.25 V max - difference between VZ measured at 10% and 50% of IZM |
| Surge Current (IZSM) | 8.0 A peak (8.3 ms half-sine) - withstands transient overloads without degradation |
| Thermal Resistance | 25 °C/W junction-to-lead - enables thermal design with discrete lead-mounting heat paths |
Pinout & Package
Package: Axial-leaded T-18 plastic encapsulated case with cathode band marking; RoHS-compliant matte-tin plated leads solderable per MIL-STD-750 Method 2026; weight 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to circuit common when used in reverse-bias regulation mode |
| Cathode | Zener regulation terminal / Voltage reference output | Banded end; connected to regulated voltage node; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables high-accuracy voltage references without external trimming |
| RoHS-compliant e3 suffix | Meets global environmental compliance requirements with matte-tin plating |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints during assembly |
| 8.0 A non-recurrent surge rating | Provides robustness against line transients and inductive kickback events |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates need for ESD-protected workstations |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback path using optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Precision Zener reference providing stable 11 V threshold for TL431-type shunt regulator interface. Use Value: ±2% VZ tolerance ensures consistent output regulation across temperature and unit-to-unit variation without calibration. | Use Scenario: Clamps transient overvoltage on 12 V automotive or industrial bus lines during load dump or inductive switching. IC Role / Device Role / Timing Role: Standalone shunt clamp absorbing surge energy up to 8.0 A peak (8.3 ms). Use Value: Low ΔVZ (0.25 V) maintains tight clamping window, protecting downstream 12 V-rated ICs from excursion beyond safe limits. |
| Programmable Voltage Reference | DC Bias Generator |
Use Scenario: Sets reference voltage for adjustable linear regulators (e.g., LM317) or analog sensor excitation circuits. IC Role / Device Role / Timing Role: Stable 11 V source with low dynamic impedance for low-noise biasing. Use Value: 2.5 Ω ZZ minimizes output impedance rise under varying load current, preserving reference accuracy. | Use Scenario: Provides fixed bias point for op-amp input stages, transistor amplifiers, or ADC reference dividers in instrumentation systems. IC Role / Device Role / Timing Role: Low-drift DC voltage source operating at 100 mA IZT with thermal resistance optimized for lead-mounted heatsinking. Use Value: 25 °C/W junction-to-lead thermal resistance allows predictable thermal design using PCB copper or chassis mounting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5350B | Same VZ (11 V), but ±5% tolerance (B suffix) and higher ΔVZ (0.25 V vs. 0.25 V same value, but B has looser overall regulation spec) | Acceptable where ±5% reference accuracy suffices; lower cost | Select 1N5350B if system-level tolerance budget permits wider VZ variation and cost optimization is prioritized |
| MMSZ5242BT1G | Surface-mount SOD-123 package, 500 mW rating, 12 V nominal, ±5% - not pin-compatible, lower power, different form factor | Used in space-constrained PCBs where axial leads are impractical | Choose MMSZ5242BT1G only for compact layouts requiring SMT; not interchangeable without board redesign |
Compared with 1N5350B and MMSZ5242BT1G, the 1N5350CE3/TR12 delivers tighter ±2% regulation, 5 W power handling, and axial-leaded mechanical robustness - making it optimal for high-reliability through-hole power regulation where precision and surge resilience are critical.
Availability
1N5350CE3/TR12 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, programmable voltage references, and DC bias generator designs requiring stable component supply and long-term obsolescence management.
Supply support for 1N5350CE3/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 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, high-power Zener regulation in mission-critical power systems - emphasizing thermal stability, surge survivability, and extended temperature operation.
FAQ
What is the Zener voltage tolerance of the 1N5350CE3/TR12?
The 1N5350CE3/TR12 has a Zener voltage tolerance of ±2%, indicated by the "C" suffix in its part number. This means its nominal 11 V regulation voltage falls within 10.78 V to 11.22 V at 25 °C lead temperature and 100 mA test current. The tighter tolerance supports precision feedback and reference applications where calibration is impractical.
Does the 1N5350CE3/TR12 require dry packing before PCB assembly?
No, the 1N5350CE3/TR12 does not require dry packing. It carries IPC/JEDEC J-STD-020B moisture sensitivity Level 1 classification due to its void-free thermosetting epoxy T-18 package. This eliminates floor-life restrictions and pre-bake requirements, simplifying manufacturing flow for high-volume production.
What is the maximum surge current rating for the 1N5350CE3/TR12?
The 1N5350CE3/TR12 is rated for a maximum non-recurrent surge current (IZSM) of 8.0 A, defined as the peak of an 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient energy without parametric shift or failure - critical for automotive load-dump or industrial inductive-switching protection circuits.
How is polarity marked on the 1N5350CE3/TR12?
The 1N5350CE3/TR12 uses a cathode band marking on the body to indicate polarity. The banded end is the cathode and must be held positive relative to the anode when operated in Zener breakdown mode. This marking aligns with JEDEC standard axial-diode conventions and ensures correct orientation during manual or automated placement.
Is the 1N5350CE3/TR12 RoHS compliant?
Yes, the 1N5350CE3/TR12 is RoHS compliant, confirmed by the "e3" suffix in its part number. It features annealed matte-tin plating on leads per MIL-STD-750 Method 2026 and meets all substance restrictions under Directive 2011/65/EU. Full compliance documentation is available from Microchip's product change notices and material declarations.
1N5350CE3/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
1N5350CE3/TR12 FAQ
1.How can I place an order for 1N5350CE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5350CE3/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 1N5350CE3/TR12 reliable?
The price and inventory of 1N5350CE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5350CE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5350CE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5350CE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5350CE3/TR12?
1N5350CE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5350CE3/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 1N5350CE3/TR12?
For technical support, including 1N5350CE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5350CE3/TR12 requirements.
6.How does Aetrix verify that 1N5350CE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5350CE3/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 1N5350CE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5350CE3/TR12?
All 1N5350CE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5350CE3/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 1N5350CE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5350CE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5350CE3/TR12 Tags
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BZT52C5V6T-7
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BZX84C3V3LT1G
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MMSZ4682T1G
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MM5Z5V1ST1G
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