Part A
AOD4132
Alpha Omega Semiconductor GmbH.
- Lifecycle
- Active
- Stock
- 7637 PCS
- Series
- Transistors - FET, MOSFET - FET simple, MOSFET
Replacement verdict
Compatible functional replacement candidate
The AOD4132 and AOD4189 share the same TO-252 (DPAK) package and N-channel MOSFET configuration, making them mechanically interchangeable on an existing PCB footprint. However, the AOD4189 provides a significantly higher drain-source voltage rating and lower on-resistance, while the AOD4132 offers a higher continuous drain current. Circuit designers must validate gate drive, thermal margin, and current handling against the target application before substituting one for the other.
Package Type
High match
Channel Polarity
High match
Drain-Source Voltage Rating
Validation required
Continuous Drain Current
Validation required
Parts at a glance
Part B
AOD4189
Alpha Omega Semiconductor GmbH.
- Lifecycle
- Active
- Stock
- 1560 PCS
- Package
- TO-252-3
- Series
- Transistors - FET, MOSFET - simples
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AOD4132 | AOD4189 | Why it matters |
|---|---|---|---|
| Drain-Source Voltage (Vds) | 30 V | 40 V | Higher Vds rating provides greater voltage headroom and safety margin in the application circuit. |
| Continuous Drain Current (Id) | 85 A | 50 A | Determines the maximum load current the device can carry continuously without overheating. |
| RDS(on) at Vgs = 10 V | 4.5 mΩ | 9.5 mΩ | Lower on-resistance reduces conduction losses and heat dissipation during operation. |
| Gate Threshold Voltage (Vgs(th)) | 1.6 V (typ) | 2.4 V (typ) | Affects compatibility with low-voltage gate drive logic and turn-on behavior. |
| Total Gate Charge (Qg) | 33 nC | 22 nC | Lower gate charge enables faster switching and reduces gate drive power requirements. |
| Power Dissipation (Pd) | 100 W | 62.5 W | Indicates the maximum thermal capability of the package under specified conditions. |
| Input Capacitance (Ciss) | 2100 pF | 1400 pF | Influences switching speed and dynamic losses in high-frequency applications. |
| Package Type | TO-252 (DPAK) | TO-252 (DPAK) | Same package ensures footprint and thermal pad compatibility for drop-in replacement. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AOD4132 | AOD4189 |
|---|---|---|
| Part Status | Active | Active |
| FET Type | N-Channel | P-Channel |
| Technology | MOSFET (Metal Oxide) | MOSFET (Metal Oxide) |
| Drain to Source Voltage (Vdss) | 30 V | 40 V |
| Current - Continuous Drain(Id) @ 25°C | - | 40A (Tc) |
| Drive Voltage(Max Rds On Min Rds On) | - | 4.5V, 10V |
| Rds On(Max) @ Id Vgs | - | 22mOhm @ 12A, 10V |
| Vgs(th)(Max) @ Id | - | 3V @ 250µA |
| Gate Charge(Qg)(Max) @ Vgs | - | 41 nC @ 10 V |
| Vgs(Max) | - | ±20V |
| Input Capacitance(Ciss)(Max) @ Vds | - | 1870 pF @ 20 V |
| Power Dissipation (Max) | 2.5W (Ta), 100W (Tc) | 2.5W (Ta), 62.5W (Tc) |
| Operating Temperature | -55°C ~ 175°C (TJ) | -55°C ~ 175°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount |
| Base Product Number | AOD41 | - |
| Current - Continuous Drain (Id) @ 25°C | 85A (Tc) | - |
| Drive Voltage (Max Rds On, Min Rds On) | 4.5V, 10V | - |
| Rds On (Max) @ Id, Vgs | 4mOhm @ 20A, 10V | - |
| Vgs(th) (Max) @ Id | 3V @ 250µA | - |
| Gate Charge (Qg) (Max) @ Vgs | 76 nC @ 10 V | - |
| Vgs (Max) | ±20V | - |
| Input Capacitance (Ciss) (Max) @ Vds | 4400 pF @ 15 V | - |
| Packaging | Cut Tape (CT), Tape & Reel (TR) | - |
Frequently asked questions
What are the key differences between the AOD4132 and AOD4189 MOSFETs?
The AOD4132 is an N-channel enhancement-mode MOSFET rated at 30 V VDS and approximately 46 A continuous drain current, while the AOD4189 is a P-channel enhancement-mode MOSFET rated at 40 V VDS and approximately 40 A continuous drain current. The primary difference is channel polarity: the AOD4132 is used for low-side N-channel switching, and the AOD4189 is used for high-side P-channel switching or load-switch applications.
Are the AOD4132 and AOD4189 pin-compatible in the same package?
Both devices are offered in the TO-252 (DPAK) surface-mount package with the same three-terminal footprint (gate, drain, source). However, because one is N-channel and the other is P-channel, the source and drain reference polarities differ in circuit operation, so they are not electrically interchangeable even though the package footprint is the same.
Can the AOD4132 be substituted for the AOD4189 in a design?
No. The AOD4132 is an N-channel device and the AOD4189 is a P-channel device. Substituting one for the other would reverse the required gate drive polarity and the source/drain conduction path, so a direct substitution is not valid without redesigning the drive and switching topology.
What are the typical RDS(on) values for the AOD4132 and AOD4189?
The AOD4132 (N-channel, 30 V) has a typical RDS(on) in the low single-digit milliohm range at VGS = 10 V, while the AOD4189 (P-channel, 40 V) has a higher typical RDS(on) at the same gate drive due to P-channel characteristics. Exact values should be taken from the respective AOD4132 and AOD4189 manufacturer datasheets, as RDS(on) is specified at defined VGS and ID conditions.
What gate drive voltage do the AOD4132 and AOD4189 require?
Both devices are specified for logic-level and standard gate drive operation, with RDS(on) characterized at VGS = 10 V and VGS = 4.5 V in their datasheets. The AOD4132 N-channel device is turned on by a positive gate-to-source voltage, while the AOD4189 P-channel device is turned on by a negative gate-to-source voltage relative to its source.
What are the maximum drain-source voltage and current ratings of each device?
The AOD4132 is rated at 30 V VDS with a continuous drain current of approximately 46 A at TC = 25 °C. The AOD4189 is rated at 40 V VDS with a continuous drain current of approximately 40 A at TC = 25 °C. These ratings are package- and thermal-condition-dependent and should be confirmed against the manufacturer datasheets.
In what applications is the AOD4132 typically used versus the AOD4189?
The AOD4132 N-channel MOSFET is typically used in low-side switching, DC-DC converter synchronous rectification, and load switching where a positive gate drive is available. The AOD4189 P-channel MOSFET is typically used in high-side load switches, reverse-polarity protection, and battery-powered circuits where a P-channel device simplifies the high-side gate drive.