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Microchip Technology 1N4741APE3/TR8
- Part No.:
- 1N4741APE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4741APE3/TR8.pdf
- Description:
- DIODE ZENER 11V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,753
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Product details
Overview
1N4741APE3/TR8 from Microsemi is a 1 W, 11 V ±5% Zener diode in DO-41 plastic package, rated for 23 mA test current (IZT), 8 Ω dynamic impedance (ZZT), and 700 mA maximum regulator current (IZM). It operates from –65°C to +150°C and regulates voltage in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N4741APE3/TR8 datasheet, 1N4741APE3/TR8 pinout, 1N4741APE3/TR8 application, or 1N4741APE3/TR8 equivalent, key selection factors include its 11 V nominal Zener voltage, 1 W power rating at TL < 105°C, 8 Ω dynamic impedance at 23 mA, RoHS-compliant matte-tin plating, and tape-and-reel packaging (TR8).
Technical Context
This discrete Zener diode functions as a two-terminal voltage reference device, operating in reverse breakdown with cathode-banded polarity. Its regulation performance is specified at 23 mA test current and characterized across –65°C to +150°C ambient and lead temperature ranges.
Thermal resistance is 45°C/W junction-to-lead (3/8" lead length) and 105°C/W junction-to-ambient on FR4 board (1 oz Cu, 4 mm² pad). Forward voltage is ≤1.2 V at 200 mA, and it meets MIL-STD-750 ESD immunity per Method 1020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11 V ±5% at 23 mA - defines stable regulation point for reference design |
| Power Dissipation | 1.0 W at TL < 105°C - sets maximum continuous thermal load on lead-mounted layout |
| Dynamic Impedance (ZZT) | 8 Ω at IZT = 23 mA - determines output voltage stability under load variation |
| Max Regulator Current (IZM) | 700 mA at TA = 50°C - limits peak reverse current before thermal runaway |
| Reverse Leakage (IR) | 5 μA max at VR = 8.4 V - ensures low standby power loss in high-impedance bias networks |
| Operating Temperature | –65°C to +150°C - supports industrial and automotive under-hood applications |
| Forward Voltage (VF) | ≤1.2 V at 200 mA - enables use as clamp or series diode in forward conduction mode |
Pinout & Package
DO-41 (DO-204AL) axial-leaded plastic package with cathode indicated by color band; terminals are non-polarized leads suitable for through-hole mounting. Moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1 - no dry pack required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded lead | Connected to lower-potential node during Zener operation; carries full reverse current |
| Cathode | Banded lead | Connected to higher-potential node during regulation; defines Zener voltage reference node |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant "e3" suffix | Matte-tin plating per MIL-STD-750 Method 2026 - ensures lead-free solder compatibility and long-term reliability |
| Plastic "P" construction | Lower thermal resistance vs. glass-body variants - improves power handling in compact layouts |
| JEDEC 1N47xxA registration | Industry-standard footprint and electrical behavior - guarantees interchangeability in legacy designs |
| MIL-STD-750 ESD immunity | Passes Method 1020 - eliminates need for external ESD protection in board-level assembly |
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: Two-terminal voltage reference providing precise 11 V setpoint. Use Value: Maintains ±5% output accuracy across –65°C to +150°C without active compensation. | Use Scenario: Protecting microcontroller I/O pins from transient voltage spikes on sensor lines. IC Role / Device Role / Timing Role: Passive clamping element diverting excess energy to ground above 11 V. Use Value: Limits voltage excursion to ≤11.6 V (VZ + ZZT × ISURGE) during 1/120 s surges. |
| DC Bias Network | Current Source Stabilizer |
Use Scenario: Establishing fixed bias points for transistor amplifiers in RF front-ends. IC Role / Device Role / Timing Role: Shunt-connected reference setting base-emitter or gate-source voltage. Use Value: Delivers stable 11 V reference with ≤8 Ω AC impedance up to 100 kHz. | Use Scenario: Improving stability of constant-current LED drivers using emitter degeneration. IC Role / Device Role / Timing Role: Zener-biased current mirror reference improving thermal drift performance. Use Value: Reduces current drift by 3× vs. resistor-only bias due to negative tempco compensation above 5 V. |
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 "e3" RoHS suffix; Sn/Pb terminations | Not compliant with EU RoHS Directive 2011/65/EU | Select when legacy Pb-based solder process is used and environmental compliance is not required |
| MMBZ5242B | SOT-23 surface-mount, 10 V, 225 mW, ±5% | Lower power, smaller footprint, different thermal path | Select for space-constrained PCBs where 1 W dissipation is unnecessary |
Compared with 1N4741A and MMBZ5242B, the 1N4741APE3/TR8 provides higher power handling (1 W vs. 225 mW), industry-standard DO-41 mechanical compatibility, and guaranteed RoHS compliance - making it optimal for through-hole industrial power supplies requiring long-term component continuity.
Availability
1N4741APE3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and test equipment requiring stable component supply with RoHS compliance and tape-and-reel delivery.
Supply support for 1N4741APE3/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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N47xxAP series was designed for general-purpose voltage regulation in cost-sensitive, high-volume applications while maintaining JEDEC standardization and extended temperature capability.
FAQ
What is the Zener voltage tolerance of the 1N4741APE3/TR8?
The 1N4741APE3/TR8 has a nominal Zener voltage of 11 V with a ±5% tolerance, as indicated by the "A" suffix in the part number per JEDEC registration. This means the actual measured VZ at 23 mA test current falls between 10.45 V and 11.55 V at TL = 25°C. The 1N4741APE3/TR8 maintains this tolerance across its full operating temperature range.
Does the 1N4741APE3/TR8 require dry packing before reflow soldering?
No, the 1N4741APE3/TR8 is moisture sensitivity level (MSL) Level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored indefinitely at ambient conditions without baking or dry packing. Its void-free epoxy body and RoHS-compliant matte-tin plating ensure robustness during standard 260°C/10 s soldering profiles.
What is the maximum surge current rating for the 1N4741APE3/TR8?
The 1N4741APE3/TR8 has a maximum non-repetitive reverse surge current (ISM) of 700 mA, measured using a ½ sine wave pulse of 1/120 second duration at 25°C ambient. This rating applies only to short-duration transients and must be derated per the power derating curve in Figure 1 when ambient or lead temperature exceeds 50°C.
Can the 1N4741APE3/TR8 be used in forward conduction mode?
Yes, the 1N4741APE3/TR8 can conduct in forward bias with a maximum forward voltage of 1.2 V at 200 mA, per the datasheet's Absolute Maximum Ratings. While optimized for reverse-breakdown regulation, its silicon PN junction supports bidirectional use - for example, as a polarity protection diode or low-voltage clamp in series with a load.
How does the thermal resistance of the 1N4741APE3/TR8 affect PCB layout?
The 1N4741APE3/TR8 exhibits 45°C/W junction-to-lead thermal resistance at 3/8" lead length, so PCB layout should maintain ≥10 mm straight lead length from body to pad and use wide copper traces to minimize thermal impedance. On FR4 with 1 oz Cu, junction-to-ambient resistance rises to 105°C/W - requiring thermal relief cuts or copper pour to sustain 1 W continuous dissipation without exceeding 150°C junction temperature.
1N4741APE3/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:
- ±5%
- 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)
1N4741APE3/TR8 FAQ
1.How can I place an order for 1N4741APE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4741APE3/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 1N4741APE3/TR8 reliable?
The price and inventory of 1N4741APE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4741APE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N4741APE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4741APE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4741APE3/TR8?
1N4741APE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4741APE3/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 1N4741APE3/TR8?
For technical support, including 1N4741APE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4741APE3/TR8 requirements.
6.How does Aetrix verify that 1N4741APE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N4741APE3/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 1N4741APE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N4741APE3/TR8?
All 1N4741APE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4741APE3/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 1N4741APE3/TR8 part is unused and in its original packaging.
Return procedure for 1N4741APE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4741APE3/TR8 Tags
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