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1N4742E3/TR13
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Product Detailed Parameters
- Description：DIODE ZENER 12V 1W DO204AL
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Voltage - Zener (Nom) (Vz)：12 V
- Tolerance：±10%
- Power - Max：1 W
- Impedance (Max) (Zzt)：9 Ohms
- Current - Reverse Leakage @ Vr：5 µA @ 9.1 V
- Operating Temperature：-65°C ~ 150°C
- Mounting Type：Through Hole
- Package / Case：DO-204AL, DO-41, Axial
- Voltage - Forward (Vf) (Max) @ If：1.2 V @ 200 mA
- Grade：-
- Qualification：-
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Overview
The Microchip Technology 1N4742E3/TR13 is a silicon 1.0-watt Zener diode in the 1N4728AP through 1N4764AP series, housed in a plastic DO-41 (DO-204AL) axial-lead package. It provides voltage regulation at a nominal Zener voltage of 12 volts with a standard tolerance of plus or minus 5%. The device operates within a temperature range of -65°C to +150°C and features RoHS-compliant annealed matte-tin plating on its terminals.
Feature Summary
- Provides stable voltage regulation across a broad operating current and temperature range
- Features flexible axial-lead mounting terminals for standard through-hole applications
- Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards
- Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020
Applications
- Voltage reference circuits requiring precise potential levels
- Overvoltage protection stages in power supply designs
- General-purpose voltage regulation tasks in electronic systems
Procurement Notes
Verify that the ordering suffix matches the required tape and reel packaging configuration. Confirm the presence of the e3 suffix indicates RoHS compliance and matte-tin terminal finish. Ensure the specific part number aligns with the intended manufacturing lot and screening level requirements before finalizing procurement orders.
Selection Notes
Select this component when a 12-volt regulation point is needed within a 1-watt power dissipation limit. Consider the plastic package construction for lower thermal resistance compared to glass-body options. Verify that the 5% voltage tolerance meets the circuit design specifications without requiring tighter grading.
Part Context
This device belongs to the widely used 1N47xxA series of silicon Zener diodes manufactured by Microsemi's Scottsdale Division. The series covers a voltage selection from 3.3 to 100 volts. The plastic encapsulation variant offers moisture classification Level 1, eliminating the need for dry pack storage conditions.
Replacement Considerations
Surface mount equivalents are available as SMAJ4742A or MLL4742A. Glass-body versions exist under the G suffix designation. Military screening levels can be obtained by adding MQ, MX, MV, or MSP prefixes to the base part number.
