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Microchip Technology 1N4747CE3/TR13
- Part No.:
- 1N4747CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4747CE3/TR13.pdf
- Description:
- DIODE ZENER 20V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,620
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Product details
Overview
1N4747CE3/TR13 from Microsemi is a 20 V, 5% tolerance, 1 W silicon Zener diode in DO-41 plastic package, rated for 12.5 mA test current (IZT), 22 Ω dynamic impedance (ZZT), and 5 μA reverse leakage at 15.2 V (VR), used for precision voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N4747CE3/TR13 datasheet, 1N4747CE3/TR13 pinout, 1N4747CE3/TR13 application, or 1N4747CE3/TR13 equivalent, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (45 °C/W junction-to-lead), surge current rating (225 mA), RoHS-compliant matte-tin plating, and tape-and-reel packaging (TR13) for automated assembly.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable output voltage across varying load and line conditions. It delivers regulated 20 V with ±5% initial tolerance and exhibits low dynamic impedance (22 Ω at 12.5 mA) for minimal voltage deviation under dynamic current changes.
Designed for axial-lead mounting on FR4 PCBs, it features 45 °C/W junction-to-lead thermal resistance at 10 mm lead length and supports steady-state dissipation of 1.0 W below 105 °C lead temperature - enabling reliable operation in industrial power rails and analog reference stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20 V ±5% at 12.5 mA - defines nominal regulation point with tight initial accuracy for reference stability |
| Power Dissipation | 1.0 W at TL < 105 °C - sets maximum continuous thermal load for PCB-level thermal design |
| Dynamic Impedance (ZZT) | 22 Ω at IZT = 12.5 mA - determines small-signal voltage variation under load transients |
| Reverse Leakage (IR) | 5 μA max at VR = 15.2 V - ensures low standby current in high-impedance bias networks |
| Surge Current (ISM) | 225 mA peak (½-sine, 1/120 s) - supports transient overvoltage clamping without failure |
| Thermal Resistance | 45 °C/W junction-to-lead - enables thermal modeling for lead-length-dependent derating |
| Operating Temp | –65 °C to +150 °C - qualifies for extended industrial and automotive under-hood environments |
Pinout & Package
DO-41 (DO-204AL) plastic axial-leaded package with cathode indicated by colored band; terminals are unmarked anode and banded cathode - polarity critical for Zener operation (cathode positive relative to anode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-biased input terminal | Connected to lower-potential node; carries full Zener current during regulation |
| Cathode | Regulated output terminal | Banded end; held at stable 20 V above anode when reverse-biased above VZ |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant matte-tin plating | Enables lead-free reflow soldering per JEDEC J-STD-020B Level 1 moisture sensitivity |
| JEDEC-registered 1N47xxA series | Guarantees standardized electrical behavior and interchangeability across qualified suppliers |
| Low thermal resistance (45 °C/W) | Supports higher power density than glass-body variants (e.g., 1N4747A-G) in same footprint |
| Tape-and-reel packaging (TR13) | Facilitates high-speed pick-and-place assembly with EIA-296 standard carrier tape |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator ICs or op-amp-based shunt regulators. IC Role / Device Role / Timing Role: Provides precise 20 V reference node for error amplifier comparison. Use Value: Maintains ±5% output accuracy across –65 °C to +150 °C with <22 Ω dynamic impedance. | Use Scenario: Protecting microcontroller I/O pins from ESD or inductive kickback spikes. IC Role / Device Role / Timing Role: Shunts excess energy to ground when voltage exceeds 20 V threshold. Use Value: Absorbs 225 mA surge pulses without degradation, leveraging 1 W power rating. |
| Signal Level Translation | Analog Sensor Biasing |
Use Scenario: Clamping logic signal swing to 20 V in mixed-voltage interface circuits. IC Role / Device Role / Timing Role: Limits maximum voltage seen by downstream 20 V-tolerant receivers. Use Value: Ensures fast response with 5 μA leakage at 15.2 V, minimizing quiescent loading. | Use Scenario: Generating stable bias voltage for bridge sensor excitation or ADC reference dividers. IC Role / Device Role / Timing Role: Supplies low-noise, temperature-stable 20 V node for precision analog front-ends. Use Value: Delivers <22 Ω impedance to suppress ripple-induced measurement error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4747A | No "e3" RoHS suffix; Sn/Pb terminations; same VZ, IZT, ZZT, and package | Not compliant with lead-free manufacturing; requires Pb-containing solder process | Select 1N4747A only for legacy Pb-based assembly lines |
| MMSZ4704T1G | Surface-mount SOD-123 package; 20 V ±5%; 500 mW rating; 30 Ω ZZT at 5 mA | Lower power handling and different thermal profile; unsuitable for 1 W continuous use | Choose MMSZ4704T1G only for space-constrained, low-power PCB layouts |
Compared with 1N4747A and MMSZ4704T1G, the 1N4747CE3/TR13 uniquely combines 1 W power capability, DO-41 axial form factor, RoHS compliance, and tape-and-reel delivery - making it optimal for through-hole industrial power supplies requiring long-term component continuity and automated assembly support.
Availability
1N4747CE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, analog sensor interfaces, overvoltage protection circuits, and embedded control systems requiring stable component supply and RoHS-compliant manufacturing.
Supply support for 1N4747CE3/TR13 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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial applications.
The 1N47xxA Zener series was developed to deliver JEDEC-standardized, high-stability voltage regulation in ruggedized plastic packages for mission-critical power conditioning and protection functions.
FAQ
What is the Zener voltage tolerance of the 1N4747CE3/TR13?
The 1N4747CE3/TR13 has a nominal Zener voltage of 20 V with a tolerance of ±5%, as confirmed by the "C" suffix in the part number per Microsemi's documentation. This tolerance applies at 12.5 mA test current and 25 °C lead temperature. The 1N4747CE3/TR13 maintains this specification across its full operating temperature range of –65 °C to +150 °C, supporting stable reference performance in demanding environments.
Is the 1N4747CE3/TR13 RoHS compliant?
Yes, the 1N4747CE3/TR13 is RoHS compliant, indicated by the "e3" suffix in the part number, denoting annealed matte-tin plating per Microsemi's specification. It meets EU RoHS Directive 2011/65/EU requirements and is qualified for lead-free reflow soldering. The 1N4747CE3/TR13 is moisture-sensitive Level 1 per IPC/JEDEC J-STD-020B, requiring no dry pack prior to assembly.
What package type does the 1N4747CE3/TR13 use?
The 1N4747CE3/TR13 uses the DO-41 (also designated DO-204AL) axial-leaded plastic package, with cathode identified by a colored band. Its mechanical dimensions conform to JEDEC standards, and it weighs 0.7 grams. The 1N4747CE3/TR13 is supplied in EIA-296 standard tape-and-reel format (TR13), optimized for automated placement equipment.
What is the maximum surge current rating for the 1N4747CE3/TR13?
The 1N4747CE3/TR13 has a maximum non-repetitive surge current (ISM) rating of 225 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25 °C ambient. This rating enables the 1N4747CE3/TR13 to safely clamp transient overvoltages in power rails and I/O protection circuits without parametric shift or failure, provided average power remains within 1.0 W limits.
How does the thermal resistance of the 1N4747CE3/TR13 affect PCB layout?
With a junction-to-lead thermal resistance of 45 °C/W at 10 mm lead length, the 1N4747CE3/TR13 requires careful lead trimming and board copper area planning to avoid exceeding 105 °C lead temperature at full 1.0 W dissipation. The 1N4747CE3/TR13 benefits from ≥4 mm² copper pads and ≥1 mm track width to achieve specified thermal performance - unlike surface-mount alternatives with higher junction-to-ambient resistance.
1N4747CE3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 20 V
- Tolerance:
- ±2%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 22 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 15.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
1N4747CE3/TR13 FAQ
1.How can I place an order for 1N4747CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4747CE3/TR13 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 1N4747CE3/TR13 reliable?
The price and inventory of 1N4747CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4747CE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N4747CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4747CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4747CE3/TR13?
1N4747CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4747CE3/TR13 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 1N4747CE3/TR13?
For technical support, including 1N4747CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4747CE3/TR13 requirements.
6.How does Aetrix verify that 1N4747CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N4747CE3/TR13 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 1N4747CE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N4747CE3/TR13?
All 1N4747CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4747CE3/TR13, 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 1N4747CE3/TR13 part is unused and in its original packaging.
Return procedure for 1N4747CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4747CE3/TR13 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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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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