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Product Detailed Parameters
- Description：DIODE ZENER 8.4V 500MW DO7
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：8.4 V
- Tolerance：±5%
- Power - Max：500 mW
- Impedance (Max) (Zzt)：15 Ohms
- Current - Reverse Leakage @ Vr：10 µA @ 5.5 V
- Operating Temperature：-65°C ~ 175°C
- Mounting Type：Through Hole
- Package / Case：DO-204AA, DO-7, Axial
- Voltage - Forward (Vf) (Max) @ If：-
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Overview
The Microchip Technology 1N3154A is an 8.4 Volt Temperature Compensated Zener Reference Diode housed in a hermetically sealed glass DO-7 (DO-204AA) package. It operates at a test current of 10 mA with a maximum zener impedance of 15 Ohms and a reverse current of 10 µA at 5.5 V. The device provides a nominal voltage range of 8.00 to 8.80 V and maintains a temperature coefficient of 0.01 %/°C over a -55°C to +150°C range. It dissipates up to 500 mW and withstands solder temperatures of 260°C for 10 seconds.
Feature Summary
- Provides minimal voltage change across broad temperature ranges
- Features internal metallurgical bonds for reliability
- Offers flexible axial-lead mounting terminals
- Non-sensitive to electrostatic discharge
Applications
- Instrumentation requiring stable voltage references
- Circuit designs demanding high voltage stability
- Temperature compensated reference applications
Procurement Notes
Verify the specific suffix requirements, such as 'e3' for RoHS compliance or military prefixes like 'JAN', against project specifications. Confirm that the standard JEDEC registered version meets all environmental and electrical constraints before finalizing procurement orders.
Selection Notes
Select this component when a stable 8.4V reference is required within the -55°C to +150°C operating range. Ensure the circuit design accommodates the specified 10 mA test current to achieve the documented 0.01%/°C temperature coefficient performance.
Part Context
This part belongs to the 1N3154 thru 1N3157A series of Zero-TC Reference Diodes manufactured by Microsemi, now part of Microchip Technology. The series offers various temperature coefficients from 0.01%/°C down to 0.001%/°C, providing options for different precision levels while maintaining the same 8.4V nominal voltage architecture.
Replacement Considerations
Direct substitutes include other parts within the 1N3154 through 1N3157A series. Military equivalents are available with JAN, JANTX, or JANTXV prefixes. Radiation-hardened versions utilize the RH prefix instead of 1N.
FAQ
How does operating current affect the temperature coefficient?
Operating at currents other than 10 mA alters the temperature coefficient. Graphs in the datasheet allow estimation of these changes based on the specific operating current.
What is the polarity configuration for operation?
The diode must be operated with the banded end positive with respect to the opposite end.
