Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Device type | Fast switching diode |
| Reverse voltage rating | 75 V |
| Forward current rating | 200 mA |
| Package | DO-213AA |
| Construction | Hermetically sealed glass surface-mount package |
| Polarity marking | Cathode end banded |
| Qualification family | MIL-PRF-19500/116 |
| Product status | In Production |
Product Overview
The 1N4148UR-1 is an in-production Microchip switching diode in the hermetically sealed DO-213AA surface-mount package. It is a 75 V, 200 mA small-signal diode intended for fast switching, signal steering and general high-reliability diode functions.
The UR package distinguishes this part from the common axial 1N4148 form. Mechanical construction, mounting and procurement qualification should therefore be checked by exact suffix rather than treating every 1N4148-marked device as the same package.
Technical Specifications
| Parameter | Confirmed Information |
|---|---|
| Function | Switching diode |
| Reverse voltage | 75 V |
| Forward current | 200 mA |
| Package | DO-213AA |
| Case | Hermetically sealed glass |
| Mounting | Surface mount |
| Cathode marking | Banded end |
| Standard family | MIL-PRF-19500/116 |
| Product status | In Production |
Design Considerations
For replacement work, verify the DO-213AA mechanical form and qualification level in addition to the electrical 1N4148 identity. Axial, plastic SMD and JAN/JANTX variants can differ in package and screening even when the basic diode function is similar.
The 200 mA rating is not a substitute for checking repetitive pulse conditions. In high-speed clamp or switching applications, review reverse recovery, junction capacitance and pulse current from the exact datasheet.
Related Engineering Resources
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
Request a Quote
To request a quotation, provide the manufacturer part number, required quantity, destination, target Date Code if applicable, and any testing or inspection requirements.
