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Product Detailed Parameters
- Description：DIODE ZENER 12V 5W AXIAL
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Voltage - Zener (Nom) (Vz)：12 V
- Tolerance：±5%
- Power - Max：5 W
- Impedance (Max) (Zzt)：2.5 Ohms
- Current - Reverse Leakage @ Vr：2 µA @ 9.1 V
- Operating Temperature：-65°C ~ 200°C
- Mounting Type：Through Hole
- Package / Case：T-18, Axial
- Voltage - Forward (Vf) (Max) @ If：1.2 V @ 1 A
- Grade：-
- Qualification：-
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Overview
The onsemi 1N5349BRL is a single-channel Zener voltage regulator diode from the 1N53 Series, housed in an axial lead DO-15 (Surmetic 40) package. It features a nominal Zener voltage of 12 V with a ±5% tolerance and a maximum steady-state power dissipation of 5 W at 25°C. The device operates within a junction temperature range of -65°C to +200°C and includes silicon-oxide passivated junctions for environmental protection.
Feature Summary
- Utilizes silicon-oxide passivated junctions for superior operating characteristics
- Provides surge rating capability up to 180 W at 8.3 ms pulse width
- Features void-free, transfer-molded thermosetting plastic packaging
Applications
- Voltage regulation circuits
- Overvoltage protection applications
- Reference voltage generation
Procurement Notes
Verify that the ordering suffix 'RL' corresponds to the tape and reel packaging format containing 4000 units per reel as specified in the manufacturer's documentation. Confirm the presence of the 'G' suffix if lead-free compliance is required. Ensure the component marking matches the specific device number for accurate identification during assembly.
Selection Notes
Select this component when a 12 V reference with tight tolerance is needed in a high-power axial package. The 5 W dissipation rating supports robust thermal performance compared to lower-power alternatives. Verify that the operating environment falls within the specified -65°C to +200°C junction temperature limits for reliable operation.
Part Context
This part belongs to the 1N53 Series of 5 Watt Zener Voltage Regulators. The series offers a wide Zener voltage range from 3.3 V to 200 V. All devices in this family share the same Surmetic 40 axial lead package and utilize silicon-oxide passivation technology for enhanced durability in common environmental conditions.
Replacement Considerations
Compatible substitutes include other manufacturers' 1N5349B variants or equivalent 5 W, 12 V Zener diodes in the DO-15 package. Ensure replacement parts match the ±5% tolerance and 5 W power dissipation ratings. Verify that any alternative maintains similar thermal resistance and surge current capabilities.
