VERIFIED CROSS-REFERENCE

1N4148 alternatives & equivalent parts

Vishay 高速小信号开关二极管,DO-35(DO-204AH)轴向封装,正向电流约 300mA、反向耐压 100V、反向恢复约 4ns,常用于开关、钳位与反极性保护。 — common packages: DO-35(DO-204AH)轴向. Each candidate below cites its manufacturer datasheet; check the relationship badge before substituting.

CANDIDATE COMPARISON

3 verified alternatives for 1N4148

AlternativeManufacturerRelationshipKey differencesSource
1N914VishayPin-to-pinDrop-in: same footprint and pinout.Vishay 官方数据手册明确 1N914 与 1N4148 电气等效;同为 DO-35 轴向、100V、约 300mA、约 4ns,极性标识一致,可直接互换。常见在产订货代码如 1N914TR(编带)、1N914TAP。Vishay 官方数据手册的第三方镜像(DigiKey 托管)
1N4448VishayPin-to-pinDrop-in: same footprint and pinout.同为 DO-35 轴向、100V、约 300mA,封装与极性兼容。差异:反向恢复约 8ns(慢于 1N4148 的 4ns)、漏电流规格不同;高速开关电路需复核时序与功耗。常见订货代码如 1N4448TAP。Vishay 官方数据手册的第三方镜像(IBS Electronics 托管)
1N4148W-7-FDiodes IncorporatedFunctionalSame function: board or design change needed.Diodes 在产型号,SOD-123 贴片封装,100V、约 300mA、约 4ns,电气参数与 1N4148 相当。差异:封装不同(SOD-123 vs DO-35),不能直接焊到原直插焊盘,需改 PCB 或用转接。数据手册(第三方托管,购买前请核对原厂)
BEFORE YOU SUBSTITUTE

Pre-replacement checklist

Need the exact lot, date code or a second source quoted?

Send the original MPN and the approved alternative. Sourceics reconfirms source, stock, date code and commercial terms before any order — no substitution without your engineering approval.

Request a quote for 1N4148

Source part reference: Vishay 官方 1N4148 数据手册(页眉 www.vishay.com)的第三方镜像(LCSC). Equivalence notes are reference guidance, not a guarantee of fit — always verify against your schematic and layout.