1N4148WS-E3-08 vs 1N4148W-TP

Cette comparaison détaillée des composants 1N4148WS-E3-08 et 1N4148W-TP vous offre un aperçu précieux de leurs spécifications et caractéristiques clés. Nous abordons en détail les facteurs importants, notamment la conformité RoHS, le statut REACH, la série, le mode de montage, le type de boîtier et d'autres caractéristiques pertinentes. La présentation côte à côte des différences simplifie la sélection des composants et vous permet de choisir plus facilement la meilleure option pour votre application spécifique.

Technical review by ETEI Component Engineering Source: manufacturer documentation

Replacement verdict

Compatible functional replacement candidate

The 1N4148W-TP and 1N4148WS-E3-08 are both surface-mount small-signal switching diodes based on the 1N4148 silicon junction, sharing identical forward current, reverse voltage, and power dissipation ratings. The primary distinction lies in package footprint and thermal characteristics, with the SOD-323 package of the 1N4148WS-E3-08 offering a slightly more compact profile than the SOD-123 package of the 1N4148W-TP. Both devices are functionally interchangeable in most low-power signal switching and clamping applications, provided the PCB layout accommodates the respective package dimensions and thermal derating requirements are observed.

Forward Current Rating High match
Reverse Voltage Rating High match
Package Type Validation required
Power Dissipation High match

Review the critical differences →

Parts at a glance

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-TP 1N4148WS-E3-08 Why it matters
Manufacturer Micro Commercial Co Vishay Different manufacturers may have different quality, availability, and pricing, but both are reputable sources for this diode.
Package / Case SOD-123 SOD-323 Package footprint determines PCB layout compatibility; SOD-123 and SOD-323 are not drop-in replacements for each other.
Average Rectified Current (Io) 150 mA 150 mA Maximum continuous forward current the diode can handle; identical rating means equivalent current capability.
Peak Reverse Voltage (Vr) 100 V 100 V Maximum reverse voltage the diode can withstand; identical rating ensures equivalent blocking capability.
Forward Voltage (Vf) at 10 mA 1.25 V max 1.0 V max Lower forward voltage reduces power loss; the Vishay part has a lower maximum Vf, which may affect efficiency in some circuits.
Reverse Recovery Time (trr) 4 ns 4 ns Fast switching speed is critical for high-frequency applications; identical trr means equivalent switching performance.
Reverse Leakage Current (Ir) at 75 V 1 µA max 1 µA max Low leakage preserves signal integrity in high-impedance circuits; identical rating ensures equivalent performance.
Junction Capacitance (Cd) 4 pF max 4 pF max Capacitance affects switching speed and RF performance; identical value means equivalent behavior in high-speed circuits.
Operating Junction Temperature (Tj) -55 °C to +150 °C -55 °C to +150 °C Thermal limits determine suitability for harsh environments; identical range means equivalent thermal robustness.
RoHS Compliance Yes Yes RoHS compliance is required for many markets; both parts meet the restriction of hazardous substances directive.

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Full specification comparison

Use manufacturer datasheets as the final authority.

Specification 1N4148WS-E3-08 1N4148W-TP
Part Status Active Active
Diode Type Standard Standard
Voltage - DC Reverse (Vr) (Max) 75 V 100 V
Current - Average Rectified(Io) 150mA 150mA
Voltage - Forward (Vf) (Max) @ If 1.2 V @ 100 mA 1.25 V @ 150 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 1 µA @ 75 V
Capacitance @ Vr F 4pF @ 0V, 1MHz 2pF @ 0V, 1MHz
Mounting Type Surface Mount Surface Mount

Frequently asked questions

What are the main differences between the 1N4148W-TP and the 1N4148WS-E3-08?

The 1N4148W-TP is a Micro Commercial Co (MCC) surface-mount switching diode in an SOD-123 package, while the 1N4148WS-E3-08 is a Vishay surface-mount switching diode in an SOD-323 package. Both share the same 1N4148 silicon switching diode characteristics, including a 100 V repetitive peak reverse voltage and 300 mA average forward current, but differ in package, manufacturer, and thermal/electrical parasitics associated with the smaller SOD-323 outline.

Are the 1N4148W-TP and 1N4148WS-E3-08 electrically interchangeable?

Electrically, both are 1N4148-series switching diodes rated for 100 V repetitive peak reverse voltage and 300 mA average forward current, with similar forward voltage and reverse recovery characteristics. However, because they use different packages (SOD-123 vs SOD-323), board-level interchangeability requires verifying pad geometry, thermal performance, and any application-specific parasitic requirements against the respective datasheets.

What package does the 1N4148W-TP use and how does it compare to the 1N4148WS-E3-08 package?

The 1N4148W-TP is supplied in an SOD-123 surface-mount package, while the 1N4148WS-E3-08 is supplied in an SOD-323 surface-mount package. The SOD-323 is smaller than the SOD-123, so the 1N4148WS-E3-08 occupies less board area but may have different power dissipation and thermal resistance characteristics.

What are the voltage and current ratings for these two diodes?

Both the 1N4148W-TP and 1N4148WS-E3-08 are rated for a repetitive peak reverse voltage (V_RRM) of 100 V and an average forward current (I_F(AV)) of 300 mA, consistent with the standard 1N4148 specification. Non-repetitive peak forward surge current and power dissipation should be confirmed from the specific manufacturer datasheet because they can differ by package.

Which manufacturer produces each part?

The 1N4148W-TP is manufactured by Micro Commercial Co (MCC). The 1N4148WS-E3-08 is manufactured by Vishay Semiconductors. The "-TP" suffix on the MCC part typically denotes tape-and-reel packaging, and the "-E3-08" suffix on the Vishay part denotes a specific packaging and lead-free/ RoHS-compliant variant per Vishay's part numbering.

Can the 1N4148WS-E3-08 be used as a drop-in replacement for the 1N4148W-TP?

Not as a direct drop-in without layout review. Although both are 1N4148-type switching diodes with the same 100 V / 300 mA ratings, the SOD-323 package of the 1N4148WS-E3-08 has different land pattern dimensions and thermal characteristics than the SOD-123 package of the 1N4148W-TP. The PCB footprint must be compatible or redesigned, and thermal and parasitic differences must be validated for the target application.

What are the typical applications for these switching diodes?

Both the 1N4148W-TP and 1N4148WS-E3-08 are used in high-speed switching applications such as signal rectification, clamping, protection, and logic circuits, where fast reverse recovery and low capacitance are required. Their surface-mount packages make them suitable for automated assembly in compact electronic designs.

Do both parts meet RoHS and lead-free requirements?

The 1N4148WS-E3-08 from Vishay is identified by the "E3" suffix, which indicates a lead-free (Pb-free) and RoHS-compliant construction per Vishay's part numbering system. The 1N4148W-TP from MCC should be verified against the current MCC datasheet and product declaration for RoHS and lead-free status, as compliance details are manufacturer- and date-code-specific.

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