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Microchip Technology 1N5356CE3/TR12
- Part No.:
- 1N5356CE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5356CE3/TR12.pdf
- Description:
- DIODE ZENER 19V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:4,991
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Product details
Overview
1N5356CE3/TR12 from Microsemi is a 5 W, 19 V ±2% tolerance axial-leaded silicon Zener diode designed 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 65 mA maximum Zener current (IZM), and features 3.0 Ω dynamic impedance (ZZ) at 65 mA test current.
For engineers reviewing the 1N5356CE3/TR12 datasheet, 1N5356CE3/TR12 pinout, 1N5356CE3/TR12 application, or 1N5356CE3/TR12 equivalent, key selection criteria include its ±2% voltage tolerance (C suffix), RoHS-compliant matte-tin plating (e3), tape-and-reel packaging (TR12), and verified 5 W steady-state dissipation with adequate heat sinking.
Technical Context
This device operates as a two-terminal voltage reference, conducting in reverse breakdown when cathode voltage exceeds anode by ≥19 V. Its low 3.0 Ω dynamic impedance ensures minimal voltage shift under load variation, and its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W operation with 3/8″ lead length heat sinking.
The 1N5356CE3/TR12 meets JEDEC 1N53xxB series specifications, uses void-free UL94V-0 epoxy encapsulation, and is rated for 8.3 ms non-recurrent surge currents up to 75 A - critical for transient suppression in industrial DC rails and telecom power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 19.0 V ±2% - tight tolerance enables accurate feedback in regulated DC-DC converters without trimming. |
| Test Current (IZT) | 65 mA - defined operating point for VZ measurement and impedance characterization. |
| Dynamic Impedance (ZZ) | 3.0 Ω max at IZT - low impedance minimizes output voltage deviation during load transients. |
| Max Reverse Current (IR) | 0.5 μA at VR = 14.4 V - ensures negligible leakage in high-impedance bias/reference networks. |
| Max Zener Current (IZM) | 65 mA - maximum continuous DC current at TL = 25°C with 3/8″ lead length heat sinking. |
| Power Dissipation (Pd) | 5.0 W at TL < 25°C - defines thermal design boundary for PCB layout and heatsinking. |
| Surge Current (IZSM) | 75 A (8.3 ms half-sine) - supports robust clamping of short-duration overvoltage events. |
| Operating Temp Range | –65°C to +150°C - qualified for automotive under-hood, industrial control, and aerospace environments. |
Pinout & Package
Package: Axial-leaded T-18 plastic case (JEDEC DO-204AL), void-free UL94V-0 epoxy body, matte-tin plated leads per MIL-STD-750 Method 2026. Cathode identified by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to circuit common; reverse-biased operation requires this terminal at lower potential than cathode. |
| Cathode (banded end) | Zener regulation node | Connected to regulated rail or feedback point; maintains 19.0 V ±2% above anode under specified IZT. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables direct replacement of trimmed references in precision power supplies without calibration. |
| RoHS-compliant matte-tin plating (e3) | Ensures solderability and long-term reliability under Pb-free reflow profiles (260°C/10 s). |
| Tape-and-reel packaging (TR12) | Supports automated SMT placement compatibility despite axial form factor - used with carrier tape feeders. |
| Moisture sensitivity Level 1 | No dry pack required prior to assembly - reduces handling cost and avoids moisture-related popcorning. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD handling during board assembly and field service. |
Applications
| Industrial Power Supply Feedback | Telecom DC-DC Converter Reference |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or forward converter feedback loop using optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Precision 19 V Zener reference providing stable voltage threshold for TL431-like comparator function. Use Value: ±2% tolerance eliminates need for external resistor trimming, reducing BOM count and calibration labor. |
Use Scenario: Generating stable 19 V bias rail for analog front-end ICs in 48 V telecom power distribution units. IC Role / Device Role / Timing Role: Primary voltage reference for LDO regulators powering ADCs, DACs, and clock buffers. Use Value: Low 3.0 Ω dynamic impedance maintains <10 mV output deviation across 10–65 mA load range. |
| Overvoltage Protection Clamp | Programmable Threshold Detector |
Use Scenario: Clamping 24 V DC input rail against surges exceeding 22 V in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Shunt protection element diverting excess current to ground when rail exceeds 19 V + margin. Use Value: 75 A surge rating handles 8.3 ms transients per IEEE C37.90.1, protecting downstream MOSFETs and controllers. |
Use Scenario: Setting trip point for comparator-based brown-out detection in battery-powered edge sensors. IC Role / Device Role / Timing Role: Fixed 19 V reference input to LM393 comparator monitoring system supply voltage. Use Value: 0.5 μA leakage at 14.4 V ensures >1 MΩ effective input impedance, minimizing loading on high-Z divider networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5356B | ±5% tolerance (B suffix), same VZ nominal, identical package and thermal specs. | Acceptable where tighter regulation not required; lower cost for non-critical biasing. | Select 1N5356B if ±5% tolerance suffices and RoHS compliance is not mandated. |
| SMBJ5356B | Surface-mount SMB package (DO-214AA), same 19 V ±5%, 5 W rating, but higher thermal resistance (junction-to-ambient ≈ 85 °C/W). | Used in space-constrained designs requiring automated pick-and-place; requires larger copper pads for thermal management. | Choose SMBJ5356B only when board real estate is constrained and thermal derating is accounted for in layout. |
Compared with 1N5356CE3/TR12, the 1N5356B offers cost savings at ±5% tolerance and lacks RoHS compliance, while SMBJ5356B trades axial mounting flexibility for SMT compatibility but demands careful thermal pad design to sustain 5 W operation.
Availability
1N5356CE3/TR12 is available at Aetrix Electronics and suitable for industrial power supply feedback, telecom DC-DC converter reference, and overvoltage protection clamp applications requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N5356CE3/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, RF, and timing solutions for aerospace, defense, and industrial markets.
The 1N53xxB Zener series was engineered for ruggedized voltage regulation in harsh-environment power systems, emphasizing wide temperature operation, surge resilience, and JEDEC-standardized mechanical and electrical consistency.
FAQ
What is the Zener voltage tolerance of the 1N5356CE3/TR12?
The 1N5356CE3/TR12 has a Zener voltage tolerance of ±2%, indicated by the "C" suffix in the part number. This means its measured VZ at 65 mA test current falls within 18.62 V to 19.38 V at 25°C lead temperature. The tolerance remains valid across the full –65°C to +150°C operating range, making the 1N5356CE3/TR12 suitable for precision reference applications where calibration overhead must be minimized.
Is the 1N5356CE3/TR12 RoHS compliant?
Yes, the 1N5356CE3/TR12 is RoHS compliant, as confirmed by the "e3" suffix in the part number. It features annealed matte-tin plated leads compliant with J-STD-020B Level 1 moisture sensitivity, and undergoes no dry pack requirement prior to assembly. The device meets EU Directive 2011/65/EU and is compatible with Pb-free reflow profiles up to 260°C for 10 seconds.
What is the maximum continuous Zener current for the 1N5356CE3/TR12?
The maximum continuous Zener current (IZM) for the 1N5356CE3/TR12 is 65 mA when operated at TL = 25°C with 3/8″ (10 mm) lead length from the body - the standard JEDEC test condition. At higher lead temperatures, IZM must be derated linearly per Figure 1 in the datasheet, reaching zero at TL = 150°C. This value assumes proper heat sinking and excludes surge conditions.
Does the 1N5356CE3/TR12 have a specified surge current rating?
Yes, the 1N5356CE3/TR12 has a peak non-recurrent surge current (IZSM) rating of 75 A for an 8.3 ms half-sine waveform, per Note 5 in the datasheet. This rating reflects its capability to absorb transient energy without degradation, supporting use in clamping applications subjected to lightning-induced or inductive-switching surges in industrial control cabinets and telecom infrastructure.
How is polarity marked on the 1N5356CE3/TR12?
The 1N5356CE3/TR12 uses a cathode band for polarity identification: the banded end is the cathode and must be held at a more positive potential than the unbanded (anode) end during reverse-bias Zener operation. This marking conforms to JEDEC DO-204AL standards and is visible on the black epoxy body. Incorrect polarity results in forward conduction (~1.2 V drop) rather than regulation.
1N5356CE3/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):
- 19 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 3 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 13.7 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
1N5356CE3/TR12 FAQ
1.How can I place an order for 1N5356CE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5356CE3/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 1N5356CE3/TR12 reliable?
The price and inventory of 1N5356CE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5356CE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5356CE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5356CE3/TR12 transactions.
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4.How is shipping managed for 1N5356CE3/TR12?
1N5356CE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5356CE3/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 1N5356CE3/TR12?
For technical support, including 1N5356CE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5356CE3/TR12 requirements.
6.How does Aetrix verify that 1N5356CE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5356CE3/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 1N5356CE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5356CE3/TR12?
All 1N5356CE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5356CE3/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 1N5356CE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5356CE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5356CE3/TR12 Tags
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Diodes Incorporated
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