Part A
1N4148W-E3-08
Vishay General Semiconductor - 二極體部門
- Lifecycle
- Active
- Stock
- 2797 件
- Package
- SOD-123
- Series
- 二極體-整流器-單
Replacement verdict
Compatible functional replacement candidate
The 1N4148W-E3-18 and 1N4148W-E3-08 are functionally equivalent small-signal switching diodes from the same manufacturer series, sharing identical electrical characteristics, package type, and thermal performance. The only distinction is the tape and reel packaging quantity, making them interchangeable in circuit design with no electrical or mechanical impact.
Forward Current Rating
High match
Package Type
High match
Reverse Voltage
High match
Forward Voltage Drop
High match
Parts at a glance
Part B
1N4148W-E3-18
Vishay General Semiconductor - 二極體部門
- Lifecycle
- Active
- Stock
- 2407 件
- Package
- SOD-123
- Series
- 二極體-整流器-單
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 1N4148W-E3-18 | 1N4148W-E3-08 | Why it matters |
|---|---|---|---|
| Manufacturer | Vishay | Vishay | Same manufacturer ensures consistent process, quality, and documentation. |
| Diode Type | Small signal switching diode | Small signal switching diode | Both must be the same diode type to be functionally interchangeable. |
| Package / Case | SOD-123 | SOD-123 | Identical footprint allows drop-in PCB replacement without layout changes. |
| Reverse Voltage (Vr) | 75 V | 75 V | Determines the maximum reverse bias the diode can withstand in the circuit. |
| Forward Current (If) | 150 mA | 150 mA | Sets the maximum continuous forward current the diode can conduct. |
| Forward Voltage (Vf) | 1.25 V @ 150 mA | 1.25 V @ 150 mA | Affects voltage drop and power loss in the conducting state. |
| Reverse Recovery Time (trr) | 4 ns | 4 ns | Critical for switching speed in high-frequency signal applications. |
| Power Dissipation | 350 mW | 350 mW | Defines the maximum power the diode can safely dissipate. |
| Packaging / Ordering Code | Tape and Reel, 10,000 pcs | Tape and Reel, 3,000 pcs | Different reel quantities affect minimum order, handling, and production line setup. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 1N4148W-E3-08 | 1N4148W-E3-18 |
|---|---|---|
| Part Status | Active | Active |
| Diode Type | Standard | Standard |
| Voltage - DC Reverse (Vr) (Max) | 75 V | 75 V |
| Current - Average Rectified(Io) | 150mA | 150mA |
| Voltage - Forward (Vf) (Max) @ If | 1.2 V @ 100 mA | 1.2 V @ 100 mA |
| Speed | Small Signal =< 200mA (Io), Any Speed | Small Signal =< 200mA (Io), Any Speed |
| Reverse Recovery Time (trr) | 4 ns | 4 ns |
| Current - Reverse Leakage @ Vr | 100 µA @ 100 V | 100 µA @ 100 V |
| Capacitance @ Vr F | 4pF @ 0V, 1MHz | 4pF @ 0V, 1MHz |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between the 1N4148W-E3-18 and the 1N4148W-E3-08?
The primary difference is the packaging format. The 1N4148W-E3-18 is supplied on a 7-inch reel with a tape width of 8 mm and a quantity of 10,000 pieces per reel, while the 1N4148W-E3-08 is supplied on a 7-inch reel with a tape width of 8 mm and a quantity of 3,000 pieces per reel. Both parts are electrically identical and share the same manufacturer part number base, 1N4148W-E3.
Are the 1N4148W-E3-18 and 1N4148W-E3-08 electrically identical?
Yes. Both variants are the same silicon switching diode with identical electrical specifications, including a repetitive peak reverse voltage of 100 V, a forward current of 300 mA, and a forward voltage of 1.2 V at 100 mA. The suffix differences only denote packaging quantity and reel size.
Can the 1N4148W-E3-18 and 1N4148W-E3-08 be used interchangeably in a design?
Yes, they can be used interchangeably because they share the same die, package (SOD-123), and electrical characteristics. The only consideration is the reel quantity, which affects manufacturing line setup and inventory management, not circuit performance.
What package do the 1N4148W-E3-18 and 1N4148W-E3-08 use?
Both devices are housed in the SOD-123 surface-mount package. This package has a typical footprint of 2.7 mm x 1.6 mm and a height of 1.1 mm, making it suitable for high-density PCB assemblies.
What are the key ratings for the 1N4148W-E3-18 and 1N4148W-E3-08?
Both diodes have a repetitive peak reverse voltage (VRRM) of 100 V, a continuous forward current (IF) of 300 mA, a forward surge current (IFSM) of 2 A for 1 µs, and a power dissipation of 400 mW at 25 °C ambient temperature. They also feature a fast reverse recovery time of 4 ns maximum.
Do the 1N4148W-E3-18 and 1N4148W-E3-08 meet RoHS and halogen-free requirements?
Yes. Both variants are RoHS-compliant and halogen-free, as indicated by the "E3" suffix in the part number, which denotes lead-free and RoHS-compliant construction. The "W" indicates the SOD-123 package.
Which variant is better for high-volume production, the 1N4148W-E3-18 or the 1N4148W-E3-08?
The 1N4148W-E3-18 is generally better for high-volume production because it offers a larger reel quantity of 10,000 pieces, reducing the frequency of reel changes and improving pick-and-place efficiency. The 1N4148W-E3-08, with 3,000 pieces per reel, is more suitable for lower-volume runs or prototyping.
Are the 1N4148W-E3-18 and 1N4148W-E3-08 available from major distributors?
Yes. Both part numbers are stocked by major distributors such as DigiKey, Mouser, and TTI. Availability may vary by region and order quantity, so designers should verify current stock and lead times with the chosen distributor.