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IRFD310 Equivalent & Substitute Parts Reference
Part Overview
The Vishay Siliconix IRFD310 is a through-hole N-Channel MOSFET rated at 400V and 350mA, with a maximum power dissipation of 1W and a 4-DIP package configuration. This transistor, categorized under Transistors, FETs, and MOSFETs, is now obsolete. Locating alternative models is necessary for ongoing designs, supply continuity, and regulatory compliance where active, RoHS-compliant parts are required.
Substiute Parts
Key Parameters
| Parameter | IRFD310 |
|---|---|
| FET Type | N-Channel |
| Technology | MOSFET (Metal Oxide) |
| Drain to Source Voltage (Vdss) | 400 V |
| Current - Continuous Drain (Id) @ 25°C | 350mA (Ta) |
| Drive Voltage (Max Rds On, Min Rds On) | 10V |
| Rds On (Max) @ Id, Vgs | 3.6Ohm @ 210mA, 10V |
| Vgs(th) (Max) @ Id | 4V @ 250µA |
| Gate Charge (Qg) (Max) @ Vgs | 17 nC @ 10 V |
| Vgs (Max) | ±20V |
| Input Capacitance (Ciss) (Max) @ Vds | 170 pF @ 25 V |
| Power Dissipation (Max) | 1W (Ta) |
| Operating Temperature | -55°C ~ 150°C (TJ) |
| Mounting Type | Through Hole |
| Supplier Device Package | 4-HVMDIP |
| Package / Case | 4-DIP (0.300", 7.62mm) |
| RoHS Status | RoHS non-compliant |
Substitute Part Grouping Explanation
Substitute identification is strictly based on identical or equivalent values for the following key parameters: FET type, technology, drain to source voltage (Vdss), continuous drain current (Id), drive voltage, Rds(on), gate threshold voltage (Vgs(th)), gate charge (Qg), maximum Vgs, input capacitance, power dissipation, operating temperature range, mounting type, package/case type, and compliance status. Substitute parts must match all functional, electrical, and mechanical specifications as listed.
Parameter Comparison
| Parameter | IRFD310 | IRFD310PBF |
|---|---|---|
| FET Type | N-Channel | N-Channel |
| Technology | MOSFET (Metal Oxide) | MOSFET (Metal Oxide) |
| Drain to Source Voltage (Vdss) | 400 V | 400 V |
| Current - Continuous Drain (Id) @ 25°C | 350mA (Ta) | 350mA (Ta) |
| Drive Voltage (Max Rds On, Min Rds On) | 10V | 10V |
| Rds On (Max) @ Id, Vgs | 3.6Ohm @ 210mA, 10V | 3.6Ohm @ 210mA, 10V |
| Vgs(th) (Max) @ Id | 4V @ 250µA | 4V @ 250µA |
| Gate Charge (Qg) (Max) @ Vgs | 17 nC @ 10 V | 17 nC @ 10 V |
| Vgs (Max) | ±20V | ±20V |
| Input Capacitance (Ciss) (Max) @ Vds | 170 pF @ 25 V | 170 pF @ 25 V |
| Power Dissipation (Max) | 1W (Ta) | 1W (Ta) |
| Operating Temperature | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) |
| Mounting Type | Through Hole | Through Hole |
| Supplier Device Package | 4-HVMDIP | 4-HVMDIP |
| Package / Case | 4-DIP (0.300", 7.62mm) | 4-DIP (0.300", 7.62mm) |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
Engineering Selection Recommendations
The IRFD310 is obsolete and RoHS non-compliant. The IRFD310PBF is active and meets ROHS3 compliance. Both share identical key parameters, functional characteristics, packaging, and mechanical dimensions. IRFD310PBF is suitable for direct substitution in applications requiring active status and RoHS compliance.
Frequently Asked Questions (FAQ)
Q: What are the primary criteria for MOSFET substitution in this product category?
A: Key substitution criteria include FET type, technology, drain to source voltage (Vdss), continuous drain current (Id), drive voltage, Rds(on), gate threshold voltage (Vgs(th)), gate charge (Qg), maximum gate-source voltage (Vgs), input capacitance (Ciss), power dissipation, operating temperature range, mounting type, and package/case style.
Q: Are there any differences between IRFD310 and IRFD310PBF that affect compatibility?
A: The IRFD310 and IRFD310PBF have matched specifications in all primary electrical and mechanical parameters, including footprint and rating, ensuring full compatibility. The difference is in RoHS status and product lifecycle.
Q: Can IRFD310PBF be used as a drop-in replacement for IRFD310?
A: Yes, based on exact matching of all provided key electrical parameters and package form factors.
Q: How important is RoHS compliance in MOSFET substitution?
A: RoHS compliance is essential in applications subject to environmental regulations. IRFD310PBF provides ROHS3 compliance, unlike the obsolete, non-compliant IRFD310.
Q: Does the package type or mounting style differ between these parts?
A: Both IRFD310 and IRFD310PBF use the 4-DIP (0.300", 7.62mm) through-hole package and 4-HVMDIP supplier device package, ensuring mechanical equivalence.
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