DHM3G80 HITACHI Diode (Diodes, Axial Diameter Horizontal Mounting) In Stock
Hitachi DHM3G80 is a silicon rectifier diode in an axial horizontal-mount package with isolated case, rated at 25V forward voltage maximum and 3mA continuous output current. Key specs: single-element configuration, 500mA non-repetitive peak forward current, suitable for low-current rectification circuits. Available from stock with worldwide shipping.
- Manufacturer
- HITACHI
- Package
- Diodes, Axial Diameter Horizontal Mounting
- Pin Count
- 2
- Lifecycle
- TRANSFERRED
- Datasheet
- DHM3G80 Datasheet PDF
- Category
- Diode
- Temp Range
- -40.0°C to 120.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 25V maximum forward voltage silicon rectifier diode in an isolated axial horizontal-mount package for flexible PCB installation
- 3mA continuous output current with 500mA non-repetitive peak forward current handling for transient protection in low-power circuits
- Single-element isolated configuration eliminates thermal coupling to heatsink, simplifying thermal management in compact rectifier assemblies
Applications
The DHM3G80 is used in low-current signal rectification, low-power DC power supply circuits, and demodulator stages in legacy radio or sensor equipment where its 25V forward voltage rating matches high-impedance signal conditions. Its axial horizontal-mount package is common in through-hole PCB assemblies for industrial instruments, test equipment, and replacement parts in existing legacy designs. The isolated case construction makes it suitable for circuits where electrical isolation between the diode body and mounting hardware is required for safety or noise immunity.
Specifications
| Case Connection | ISOLATED |
| Configuration | SINGLE |
| Diode Element Material | SILICON |
| Diode Type | RECTIFIER DIODE |
| Forward Voltage-Max (VF) | 25V |
| JESD-30 Code | O-PALF-W2 |
| Non-rep Pk Forward Current-Max | 0.5A |
| Number of Elements | 1 |
| Number of Phases | 1 |
| Output Current-Max | 0.003A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | ROUND |
| Package Style | LONG FORM |
| Qualification Status | Not Qualified |
| Rep Pk Reverse Voltage-Max | 8000V |
| Reverse Recovery Time-Max | 0.1 µs |
| Surface Mount | NO |
| Terminal Form | WIRE |
| Terminal Position | AXIAL |
| Package | Diodes, Axial Diameter Horizontal Mounting |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.70 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What continuous current and peak forward current ratings does DHM3G80 support in rectifier circuits?
The DHM3G80 supports a continuous output current of 3mA and a non-repetitive peak forward current of 500mA, making it suited for low-power signal rectification and small bias supply circuits rather than high-current power conversion. Operating it within the 3mA continuous rating at voltages below 25V ensures long-term reliability in temperature ranges up to 125°C.
How does the isolated case of DHM3G80 simplify circuit design in mixed-signal equipment?
The isolated case construction of the DHM3G80 means the diode body is not electrically connected to its mounting surface, eliminating the need for insulating washers or pads when mounting to a metal chassis or heatsink. This reduces assembly part count by at least 2 components per diode and prevents unintended ground loops in sensitive analog or RF circuits operating at signal levels below 100mV.
For which legacy or industrial replacement applications is DHM3G80 most commonly sourced?
The DHM3G80 is frequently sourced as a drop-in replacement in legacy industrial instruments, vintage radio frequency demodulators, and signal conditioning equipment originally designed with silicon axial rectifier diodes rated near 25V and 3mA. Its axial horizontal-mount package mates with standard 2.5mm to 5.0mm lead-spacing PCB pads, making direct substitution possible without board rework on assemblies built before the 1990s.
How does the 25V forward voltage maximum specification of DHM3G80 affect circuit design choices?
The DHM3G80's 25V maximum forward voltage is unusually high for a silicon rectifier diode, which typically shows a forward voltage drop of 0.6V to 1.0V at rated current. This 25V specification likely refers to the maximum reverse voltage or peak inverse voltage rating, placing DHM3G80 in applications where the reverse blocking requirement is 25V and the signal frequency does not exceed the diode's recovery time, such as 50Hz or 60Hz AC rectification at low power levels below 100mW.
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