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Microchip Technology 1N4741P/TR12
- Part No.:
- 1N4741P/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4741P/TR12.pdf
- Description:
- DIODE ZENER 11V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,042
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Product details
Overview
1N4741P/TR12 from Microsemi is a 1 W, 11 V ±5% 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. It provides stable voltage regulation in power supply reference, overvoltage protection, and biasing circuits across industrial temperature range.
For engineers reviewing the 1N4741P/TR12 datasheet, 1N4741P/TR12 pinout, 1N4741P/TR12 application, or 1N4741P/TR12 equivalent, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (45 °C/W junction-to-lead), surge current rating (414 mA), RoHS-compliant "e3" plating, and tape-and-reel packaging per EIA-296.
Technical Context
This axial-lead silicon Zener diode operates in reverse breakdown to maintain a stable 11 V reference across 0.25–414 mA DC current range. Its 8 Ω dynamic impedance at 23 mA ensures low output variation under load changes, while the −65 °C to +150 °C operating range supports harsh-environment deployment.
The device uses void-free thermosetting epoxy encapsulation (UL94V-0), tin-lead or matte-tin plating per MIL-STD-750 Method 2026, and features cathode band polarity marking. It is moisture-sensitive Level 1 per J-STD-020B-no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11 V ±5% at 23 mA - defines nominal regulation point with tight production control |
| Power Dissipation | 1.0 W at TL < 105 °C - limits continuous thermal stress with 3/8″ lead length |
| Dynamic Impedance (ZZT) | 8 Ω @ 23 mA - determines output voltage deviation under varying load current |
| Reverse Leakage Current | 5 μA @ 8.4 V - sets minimum off-state power loss in shunt regulator configurations |
| Surge Current (ISM) | 414 mA - withstands short-duration transients without degradation |
| Thermal Resistance | 45 °C/W junction-to-lead - enables thermal design using lead conduction path |
| Forward Voltage | 1.2 V max @ 200 mA - relevant for forward-bias fault conditions or dual-use circuits |
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 | Non-banded end | Connected to lower-potential node in Zener regulation; forward conduction path |
| Cathode | Banded end | Connected to higher-potential node; reverse-biased terminal where regulated voltage appears |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N47xxAP series | Industry-standard footprint and electrical behavior for drop-in compatibility in legacy designs |
| Plastic P-suffix construction | Lower thermal resistance vs. glass-body (G-suffix) variants-improves power handling reliability |
| RoHS-compliant "e3" option | Meets EU directive requirements without compromising solderability or thermal performance |
| Tape-and-reel packaging (TR suffix) | Enables automated SMT placement despite axial-leaded form factor via carrier tape feed |
| MIL-STD-750 ESD immunity | Nonsensitive to electrostatic discharge-reduces handling precautions during assembly |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulators or switching converter error amplifiers. IC Role / Device Role / Timing Role: Shunt reference providing precise 11 V setpoint for error comparator input. Use Value: Maintains ±5% output accuracy over temperature and line/load variations due to low ZZT and stable VZ. | Use Scenario: Protecting downstream ICs from transient voltage spikes on 12 V rail. IC Role / Device Role / Timing Role: Clamping element diverting excess energy to ground when rail exceeds 11 V. Use Value: Limits peak voltage to 11.6 V (VZ + ΔV at ISM) during 414 mA surges-prevents latch-up or damage. |
| Bias Network Stabilizer | Temperature-Compensated Reference |
Use Scenario: Setting fixed bias points for op-amp input stages or transistor amplifiers. IC Role / Device Role / Timing Role: Providing stable DC offset independent of supply fluctuations. Use Value: Delivers <10 mV drift over −65 °C to +150 °C due to predictable tempco and low ZZK. | Use Scenario: Paired with complementary diodes to cancel thermal drift in precision references. IC Role / Device Role / Timing Role: Primary Zener element in compensated reference string with known tempco (−2 mV/°C typical). Use Value: Enables sub-100 ppm/°C reference stability when combined with positive-tempco components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4741A | No TR suffix; bulk packaging; same VZ, IZT, ZZT, and package | Not optimized for automated assembly; requires manual loading or tube-to-tape conversion | Select 1N4741P/TR12 when high-volume pick-and-place integration is required |
| BZX55C11 | Same 11 V ±5%, but 500 mW rating, TO-92 package, 100 Ω ZZT, and different thermal profile | Lower power handling and higher impedance limit use in high-current or low-noise references | Choose BZX55C11 only for space-constrained PCBs where 1 W dissipation is not needed |
Compared with 1N4741A and BZX55C11, the 1N4741P/TR12 offers superior thermal performance (45 °C/W vs. ~200 °C/W), higher surge capability (414 mA vs. ~100 mA), and factory-verified tape-and-reel readiness-making it optimal for industrial power rails requiring robustness and manufacturability.
Availability
1N4741P/TR12 is available at Aetrix Electronics and suitable for power supply reference, overvoltage clamp, and bias network stabilizer applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for 1N4741P/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 discrete components for aerospace, defense, and industrial markets.
The 1N4741P/TR12 belongs to Microsemi's legacy 1N47xxAP Zener diode family, engineered for stable voltage regulation in mission-critical power systems where thermal resilience and long-term parametric consistency are essential.
FAQ
What is the Zener voltage tolerance of the 1N4741P/TR12?
The 1N4741P/TR12 has a Zener voltage tolerance of ±5%, specified at 23 mA test current and 25 °C lead temperature. This tolerance is confirmed by the "A" suffix in the part number per JEDEC registration and applies across the full operating temperature range of −65 °C to +150 °C. The 1N4741P/TR12 maintains this specification without derating under standard mounting conditions.
Does the 1N4741P/TR12 meet RoHS requirements?
Yes, the 1N4741P/TR12 is RoHS compliant, indicated by the "e3" suffix in its full manufacturer designation (1N4741AP,e3). Its terminals feature annealed matte-tin plating per MIL-STD-750 Method 2026, and the void-free epoxy body meets UL94V-0 flammability standards. Compliance is verified per EU Directive 2011/65/EU.
What is the maximum surge current rating for the 1N4741P/TR12?
The 1N4741P/TR12 has a maximum non-repetitive 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 allows the 1N4741P/TR12 to absorb transient overvoltages without permanent parameter shift, provided average power dissipation remains within 1.0 W limits.
How does the thermal resistance of the 1N4741P/TR12 compare between junction-to-lead and junction-to-ambient?
The 1N4741P/TR12 has a junction-to-lead thermal resistance of 45 °C/W at 3/8″ (10 mm) lead length, versus 105 °C/W junction-to-ambient on FR4 board with specified copper area. This difference highlights the importance of lead conduction in thermal management-the 1N4741P/TR12 relies significantly on lead heat sinking rather than PCB copper for cooling.
Is the 1N4741P/TR12 suitable for automated assembly processes?
Yes, the "TR12" suffix indicates tape-and-reel packaging per EIA-296 standard, enabling direct use in high-speed pick-and-place equipment. The 1N4741P/TR12's axial-leaded DO-41 form factor is carrier-tape compatible, and its matte-tin plating ensures reliable solder wetting without additional pre-tinning or flux adjustment.
1N4741P/TR12 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:
- ±10%
- 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)
1N4741P/TR12 FAQ
1.How can I place an order for 1N4741P/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4741P/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 1N4741P/TR12 reliable?
The price and inventory of 1N4741P/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4741P/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4741P/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4741P/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4741P/TR12?
1N4741P/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4741P/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 1N4741P/TR12?
For technical support, including 1N4741P/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4741P/TR12 requirements.
6.How does Aetrix verify that 1N4741P/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4741P/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 1N4741P/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4741P/TR12?
All 1N4741P/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4741P/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 1N4741P/TR12 part is unused and in its original packaging.
Return procedure for 1N4741P/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4741P/TR12 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
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
-
MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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