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Microchip Technology 1N4741CPE3/TR8
- Part No.:
- 1N4741CPE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4741CPE3/TR8.pdf
- Description:
- DIODE ZENER 11V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,390
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Product details
Overview
1N4741CPE3/TR8 from Microsemi is a 11 V, ±2% tolerance, 1 W silicon Zener diode in DO-41 plastic package, rated for 23 mA test current, 8 Ω dynamic impedance at IZT, and 5 μA reverse leakage at 8.4 V, used for precision voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N4741CPE3/TR8 datasheet, 1N4741CPE3/TR8 pinout, 1N4741CPE3/TR8 application, or 1N4741CPE3/TR8 equivalent, key selection factors include Zener voltage tolerance (±2%), thermal resistance (45 °C/W junction-to-lead), surge current rating (414 mA), RoHS-compliant matte-tin plating, and tape-and-reel packaging (TR8).
Technical Context
This device operates in reverse breakdown to maintain stable output voltage across varying load and line conditions. It delivers regulated 11 V with tight ±2% initial tolerance (C suffix) and exhibits low dynamic impedance (8 Ω at 23 mA), enabling effective ripple suppression in low-power analog references.
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 - critical for thermal design in compact linear regulators and sensor bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11 V nominal, ±2% tolerance - ensures precise reference accuracy for feedback loops and voltage clamping. |
| Power Dissipation | 1.0 W at TL < 105 °C - defines maximum continuous DC power handling under standard lead-mount conditions. |
| Test Current (IZT) | 23 mA - operating point where VZ and ZZT are specified; sets minimum regulation current for stable performance. |
| Dynamic Impedance (ZZT) | 8 Ω at IZT = 23 mA - determines AC ripple rejection capability in shunt regulator applications. |
| Reverse Leakage (IR) | 5 μA max at VR = 8.4 V - confirms low standby current in high-impedance bias networks. |
| Surge Current (ISM) | 414 mA peak (½-sine, 1/120 s) - specifies transient overvoltage withstand capability without degradation. |
| Thermal Resistance | 45 °C/W junction-to-lead (3/8″ lead length) - enables thermal modeling for reliability in enclosed power modules. |
Pinout & Package
DO-41 (DO-204AL) plastic axial-leaded package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; reverse-biased operation requires cathode at higher potential. |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; connected to unregulated input; maintains stable 11 V relative to anode during breakdown. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables tighter feedback loop control in precision 11 V references without post-calibration. |
| RoHS-compliant "e3" suffix | Meets EU Directive 2011/65/EU with annealed matte-tin plating - no lead content, compatible with Pb-free reflow. |
| Tape-and-reel packaging (TR8 suffix) | Standard EIA-296 compliant reel format - supports automated SMT placement when used with axial-to-SMT adapters or manual assembly. |
| Moisture sensitivity Level 1 | No dry pack required per IPC/JEDEC J-STD-020B - simplifies handling and eliminates bake-out prior to assembly. |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - withstands typical handling ESD events without parameter shift or failure. |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulators or op-amp reference circuits requiring 11 V precision. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 11 V reference point independent of load current variation. Use Value: ±2% tolerance and 8 Ω ZZT ensure <10 mV output drift under 10–30 mA load changes, improving regulation accuracy. | Use Scenario: Protecting downstream ICs from transient voltage spikes exceeding 11 V in industrial sensor interfaces. IC Role / Device Role / Timing Role: Reverse-biased clamping element diverting excess energy to ground during overvoltage events. Use Value: 414 mA surge rating and fast Zener knee enable reliable clamping of 100–500 ns transients without thermal runaway. |
| Signal Level Shifting | Current Source Bias |
Use Scenario: Generating fixed 11 V offset for analog signal conditioning stages in data acquisition front-ends. IC Role / Device Role / Timing Role: Passive level translator establishing DC bias point for AC-coupled amplifiers or ADC drivers. Use Value: Low 5 μA leakage at 8.4 V minimizes error current injection into high-impedance sensor nodes. | Use Scenario: Setting constant bias current for LED drivers or transistor amplifier stages using series resistor + Zener configuration. IC Role / Device Role / Timing Role: Stable voltage source enabling predictable current through external resistor (e.g., 1 kΩ → ~11 mA). Use Value: 1 W power rating allows sustained operation at 23 mA test current with margin for ambient temperature rise up to 105 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4741A | Same 11 V nominal, but ±5% tolerance (A suffix) and non-RoHS Sn/Pb plating | Acceptable where cost-sensitive designs tolerate wider voltage spread and leaded assembly is permitted | Select when RoHS compliance or tight tolerance is not required; verify plating compatibility with assembly process. |
| BZX55C11 | 11 V, ±5%, 500 mW rating, DO-35 package, higher ZZT (~20 Ω) | Suitable only for low-power (<10 mA) references; insufficient surge rating for clamp use | Choose only for space-constrained, low-current applications where 1 W dissipation is unnecessary. |
Compared with 1N4741A and BZX55C11, the 1N4741CPE3/TR8 offers superior precision (±2% vs. ±5%), full 1 W power handling, RoHS compliance, and higher surge robustness - making it optimal for industrial-grade voltage references and clamps where accuracy and reliability are prioritized.
Availability
1N4741CPE3/TR8 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and analog biasing applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N4741CPE3/TR8 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 1N47xxAP Zener series was developed for ruggedized, high-stability voltage regulation in mission-critical power systems where thermal resilience, ESD immunity, and moisture resistance are essential.
FAQ
What is the Zener voltage tolerance of the 1N4741CPE3/TR8?
The 1N4741CPE3/TR8 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its actual breakdown voltage falls within 10.78 V to 11.22 V at 23 mA test current and 25 °C lead temperature. This tighter tolerance improves accuracy in feedback networks compared to standard ±5% variants like the 1N4741A.
Does the 1N4741CPE3/TR8 require dry packing before PCB assembly?
No, the 1N4741CPE3/TR8 does not require dry packing. It is moisture sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it can be stored and assembled without baking or humidity-controlled handling. This simplifies manufacturing logistics and reduces risk of popcorning during reflow.
What is the maximum surge current rating for the 1N4741CPE3/TR8?
The 1N4741CPE3/TR8 has a maximum surge current (ISM) rating of 414 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25 °C ambient. This rating supports transient overvoltage clamping in industrial power rails and protects sensitive downstream circuitry from short-duration spikes.
Is the 1N4741CPE3/TR8 RoHS compliant?
Yes, the 1N4741CPE3/TR8 is RoHS compliant, as confirmed by the "e3" suffix. It uses annealed matte-tin plating instead of traditional tin-lead, meeting EU Directive 2011/65/EU requirements. The device is fully compatible with Pb-free soldering processes and qualifies per MIL-STD-750 Method 2026 for solderability.
What package type does the 1N4741CPE3/TR8 use?
The 1N4741CPE3/TR8 uses the DO-41 (JEDEC DO-204AL) axial-leaded plastic package. It features a void-free thermosetting epoxy body rated UL94V-0, flexible leads for manual or automated insertion, and cathode polarity marked by a visible band. The TR8 suffix indicates EIA-296 standard tape-and-reel packaging.
1N4741CPE3/TR8 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):
- 11 V
- Tolerance:
- ±2%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 8 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 8.4 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)
1N4741CPE3/TR8 FAQ
1.How can I place an order for 1N4741CPE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4741CPE3/TR8 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 1N4741CPE3/TR8 reliable?
The price and inventory of 1N4741CPE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4741CPE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N4741CPE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4741CPE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4741CPE3/TR8?
1N4741CPE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4741CPE3/TR8 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 1N4741CPE3/TR8?
For technical support, including 1N4741CPE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4741CPE3/TR8 requirements.
6.How does Aetrix verify that 1N4741CPE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N4741CPE3/TR8 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 1N4741CPE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N4741CPE3/TR8?
All 1N4741CPE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4741CPE3/TR8, 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 1N4741CPE3/TR8 part is unused and in its original packaging.
Return procedure for 1N4741CPE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4741CPE3/TR8 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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Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
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SMAZ12-13-F
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