Product Overview
A Used Hitachi HL7801E Laser Diode in Its Original Factory Case, Described Honestly
Condition
Used. The photographed unit comes in the original Hitachi clamshell case with the factory label reading Type HL7801E, Serial No. 8C0620, Made in Japan. The gold plated flange mount package sits in its conductive foam bed, and the leads have been formed, consistent with prior installation. The case itself shows shelf wear and old tape residue. Functionality has not been verified, so treat these as untested and price your risk accordingly. Two in stock; serial numbers will differ between units.
Same or next business day shipping from our Idaho warehouse. Honest pricing, no nonsense.
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Product Overview
The Hitachi HL7801E is a laser diode listed at 20mW output in the 830nm band, which puts its beam in the near-infrared, just past what the human eye can see. This one is the flange mount package shown in the photo: a gold plated body with a mounting flange and three formed leads, riding in the original serialized Hitachi case. Parts like this turn up in optical equipment and legacy instrumentation designed around this exact Hitachi part number. Drive current, pinout, and package details are not confirmed here - verify against the Hitachi HL7801E datasheet before use. These are used units offered for repair work and experimentation, not guaranteed performers, and the description stops where our knowledge does.
Key Features
- Brand: Hitachi
- Part number: HL7801E, matching the factory case label
- Listed output: 20mW (not bench verified)
- Listed wavelength: 830nm, near-infrared
- Package: gold plated flange mount, per the photo
- Supplied in the original labeled and serialized Hitachi case
- Condition: used, leads formed, functionality not verified
Applications
- Repair tech replacing a failed diode in equipment built around the HL7801E
- Optics experimenter needing an 830nm near-infrared source for bench work
- Engineer keeping legacy instrumentation alive with an original part number match
Frequently Asked Questions
Have these been tested?
No. Functionality is not verified. The price reflects that, and we describe exactly what we see: used units with formed leads, still in original Hitachi cases.
What are the drive current and pinout?
Not confirmed - verify against the Hitachi HL7801E datasheet before applying power. Laser diodes are easily damaged by overcurrent and static, so use a proper driver circuit.
Can I see the beam?
Mostly no. 830nm is near-infrared, largely invisible to the human eye. Treat any laser as an eye hazard, especially one you cannot see, and use appropriate IR detection and eye protection.
Do I get the original case?
Yes. Each diode ships in the labeled Hitachi clamshell case it was photographed in, foam bed and all.
Why buy a single diode here instead of hunting a bulk lot?
Because you likely need exactly one, maybe a spare. PartsMine sells exact quantities - no forced lots. Shipping is $8 flat rate, free over $28, so both diodes together ship free. Same or next business day from Idaho.
830nm is light you will never see doing work you will definitely notice. Two Hitachi survivors here, each still in its serialized factory case, waiting for a careful driver circuit and a project that calls them by name.
