Part A
AO4803A
Alpha Omega Semiconductor GmbH.
- Lifecycle
- Active
- Stock
- 4306 PCS
- Package
- SOIC-8
- Series
- Transistors - FET, MOSFET - matrices
Replacement verdict
Compatible functional replacement candidate
The AO4803A and AO4807L are both dual P-channel enhancement-mode MOSFETs in the SOIC-8 package with comparable voltage and current ratings, making the AO4807L a viable functional replacement candidate for the AO4803A in most low-voltage switching applications. Designers should validate gate threshold, on-resistance, and thermal behavior against the target circuit before committing to production.
Channel Configuration
High match
Drain-Source Voltage Rating
High match
On-Resistance
Validation required
Gate Threshold Voltage
Validation required
Parts at a glance
Part B
AO4807L
Alpha Omega Semiconductor GmbH.
- Lifecycle
- Active
- Stock
- 5169 PCS
- Package
- SOIC-8
- Series
- Transistors - FET, MOSFET - matrices
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AO4803A | AO4807L | Why it matters |
|---|---|---|---|
| Channel Type / Configuration | Dual P-Channel (2x P-Ch) | Dual P-Channel (2x P-Ch) | Both are dual P-channel MOSFETs, so the channel polarity and device count match, which is essential for direct circuit substitution. |
| Drain-Source Voltage (Vds) | 30 V | 30 V | Vds rating must meet or exceed the circuit's maximum voltage stress; matching ratings confirm equivalent voltage headroom. |
| Continuous Drain Current (Id) | 5 A | 6 A | Current rating determines the load the device can safely carry; a higher Id gives more margin in the same footprint. |
| Rds(on) at Vgs = 10 V | 40 mΩ | 30 mΩ | Lower on-resistance reduces conduction losses and heat; a lower Rds(on) part can improve efficiency in the same application. |
| Rds(on) at Vgs = 4.5 V | 55 mΩ | 45 mΩ | Logic-level Rds(on) matters for low-voltage gate drive circuits; the lower value indicates better performance at 4.5 V gate drive. |
| Gate Threshold Voltage (Vgs(th)) | -1.0 V to -2.4 V | -1.0 V to -2.4 V | Threshold voltage determines turn-on behavior with logic-level signals; matching ranges confirm compatible gate drive requirements. |
| Total Gate Charge (Qg) | 10 nC (typ) | 12 nC (typ) | Gate charge affects switching speed and driver power; similar values indicate comparable switching performance. |
| Package | SOIC-8 | SOIC-8 | Package compatibility ensures the part fits the same PCB footprint and thermal pad layout. |
| Power Dissipation (Pd) | 2 W | 2 W | Power dissipation rating indicates thermal capability; matching values confirm equivalent thermal headroom in the package. |
Need help validating a replacement?
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AO4803A | AO4807L |
|---|---|---|
| Supplier | - | Alpha & Omega Semiconductor Inc. |
| Part Status | Not For New Designs | Obsolete |
| FET Type | 2 P-Channel (Dual) | 2 P-Channel (Dual) |
| FET Feature | Logic Level Gate | Logic Level Gate |
| Drain to Source Voltage (Vdss) | 30V | 30V |
| Current - Continuous Drain(Id) @ 25°C | 5A | 6A |
| Rds On(Max) @ Id Vgs | 46mOhm @ 5A, 10V | 35mOhm @ 6A, 10V |
| Vgs(th)(Max) @ Id | 2.5V @ 250µA | 2.4V @ 250µA |
| Gate Charge(Qg)(Max) @ Vgs | 11nC @ 10V | 16nC @ 10V |
| Input Capacitance(Ciss)(Max) @ Vds | 520pF @ 15V | 760pF @ 15V |
| Power - Max | 2W | 2W |
| Operating Temperature | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary differences between the AO4803A and AO4807L MOSFETs?
The AO4803A and AO4807L are both dual P-channel enhancement-mode MOSFETs in an SO-8 package from Alpha & Omega Semiconductor, but they differ in voltage rating and on-resistance. The AO4803A is rated at -30V VDS, while the AO4807L is rated at -30V VDS as well; however, their RDS(on) specifications and gate charge characteristics differ, so the datasheets for each specific part number should be consulted for exact values before substitution.
Are the AO4803A and AO4807L pin-compatible?
Both devices are offered in the standard SO-8 package with dual P-channel MOSFET pinouts, so they share the same footprint and pin function arrangement. Pin-level compatibility should still be confirmed against the respective manufacturer datasheets, since pinout conventions for dual MOSFETs in SO-8 are standardized but must be verified per part.
Can the AO4807L be used as a direct replacement for the AO4803A?
Direct substitution requires validating all critical parameters, including VDS rating, VGS threshold, RDS(on) at the application gate drive, gate charge, and thermal characteristics. Because the two parts have different specified RDS(on) and gate charge values, a design review against the target circuit's voltage, current, and switching requirements is necessary before treating them as interchangeable.
What is the drain-source voltage rating of each device?
Both the AO4803A and AO4807L are specified with a drain-source voltage (VDS) rating of -30V, making them suitable for low-voltage P-channel switching applications within that limit. The absolute maximum ratings should always be confirmed on the official Alpha & Omega Semiconductor datasheets for the exact revision of each part.
Do both parts come in the same package type?
Yes, both the AO4803A and AO4807L are supplied in the SO-8 (Small Outline 8-pin) surface-mount package, which supports automated assembly and is widely used for dual MOSFET configurations. Package outline, thermal pad considerations, and PCB land pattern should be verified from the manufacturer datasheets.
Which parameters should be compared before choosing between the AO4803A and AO4807L?
Key comparison parameters include VDS rating, VGS(th) gate threshold, RDS(on) at the intended gate-source voltage, total gate charge (Qg), input capacitance, power dissipation rating, and operating junction temperature range. These values should be taken directly from the official Alpha & Omega Semiconductor datasheets for each part number to ensure an accurate design decision.