IRLB4132PBF - 30V 78A N-Channel HEXFET MOSFET TO-220
MPN: IRLB4132PBF ✓ Hoạt độngIRLB4132PBF Tóm tắt
A power MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) is a voltage-controlled three-terminal switching device used to switch or amplify electronic signals in power-conversion circuits. N-channel MOSFETs such as the IRLB4132PBF sit in the broader hierarchy of discrete semiconductors (MOSFET -> transistor -> semiconductor -> electronic component) and are typically selected for low-side or high-side switching where the drain is tied to the load and the source returns to ground. The "logic-level" gate threshold rating (typically 1V to 2.5V Vgs(th)) means the device turns on fully with a 5V drive, simplifying microcontroller interfaces in UPS, inverter, and motor-drive designs.
Key features include an ultra-low on-resistance of approximately 3.5 mOhm at VGS=10V (and roughly 5 mOhm at VGS=4.5V), avalanche-rated ruggedness, and a 175 C maximum operating junction temperature. The TO-220AB package provides a thermal resistance (junction-to-case) of about 1.05 C/W when properly mounted to a heatsink, enabling sustained high-current switching in space-constrained designs.
The HEXFET cell structure combines a vertical DMOS architecture with a hexagonal cell layout, balancing conduction loss and switching speed. The 30V VDS rating leaves ample headroom for 12V bus applications, while the 78A continuous rating supports high-current inverter stages where traditional MOSFETs would otherwise require paralleling.
Typical applications include uninterruptible power supplies (UPS), DC-AC inverters, low-voltage motor drives, and high-current load switches in industrial and telecom power systems. The part is also commonly used as a synchronous rectifier on the secondary side of 12V buck converters.
Design consideration: at high continuous currents, an appropriately sized heatsink with thermal compound is required to keep junction temperature below 150 C for reliable long-term operation. The TO-220 tab is electrically tied to the drain, so insulating hardware (mica washer or silicone pad) is required when mounting to a grounded heatsink.
This page synthesizes distributor pricing, drop-in alternatives, application notes, and parametric comparisons not found on a single manufacturer datasheet, giving engineers a one-stop reference for sourcing and validating the IRLB4132PBF in production designs.
Bộ thay thế dễ dàng lắp đặt cho IRLB4132PBF — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với IRLB4132PBF (cùng hình factor và footprint) — khác nhau ở Technology, Package, Drain-Source Voltage (VDS), Operating Junction Temperature, Mounting Type.
IRLB4030PBF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →IRFB3077PBF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
IRF1405PBF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →IRFB4020PBF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →VBM1303
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
IRLL024ZTRPBF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →IRLB4132PBF Tỷ lệ tối đa & tính chất điện
| Manufacturer | Infineon Technologies (formerly International Rectifier) |
| Kiểu transitor | N-Channel MOSFET (HEXFET) |
| Drain-Source Voltage (VDS) | 30 V |
| Continuous Drain Current (ID, Tc=25C) | 78 A |
| Maximum Power Dissipation (PD, Tc=25C) | 140 W |
| On-Resistance (RDS(on), VGS=10V) | 3.5 mOhm (typical) |
| Gate Threshold Voltage (VGS(th), typical) | 1.0 V to 2.5 V |
| Maximum Junction Temperature | 175 C |
| Khoảng nhiệt độ hoạt động | -55 C to +175 C |
| Hộp / Vỏ | TO-220AB (through-hole, 3 leads) |
| Kiểu lắp đặt | Through Hole |
| Lead-Free / RoHS | Yes (Pb-free PBF suffix) |
| AEC-Q101 Automotive Qualification | Not qualified (industrial/commercial) |
Cấu hình chân IRLB4132PBF
| Chân 1 | Gate — MOSFET gate (logic-level, 5V drive compatible) |
| Chân 2 | Drain — MOSFET drain (electrically tied to the metal tab of TO-220AB) |
| Chân 3 | Source — MOSFET source (return path for load) |
Khu vực hoạt động an toàn (TC=25C, VGS=10V, TJ=175C)
Ứng dụng tiêu biểu
IRLB4132PBF phù hợp cho 6 Áp dụngs: Uninterruptible Power Supply (UPS) - Low-Side Switch, DC-AC Inverter Power Stage, 12V High-Current Load Switch, Synchronous Rectifier in 12V Buck Converter, Brushed DC Motor Drive (H-Bridge), Telecom 12V Hot-Swap Controller.
Uninterruptible Power Supply (UPS) - Low-Side Switch
The IRLB4132PBF is explicitly optimized by Infineon for UPS applications per the datasheet description, where it serves as the low-side switching element between the 12V battery bus and the primary of the step-up transformer. Its 78A continuous drain current and 3.5 mOhm RDS(on) at VGS=10V keep conduction loss in a 1 kW UPS stage to a level manageable without forced-air cooling, while the 30V VDS provides ample headroom over a 12V battery even at full charge. Designers should add a TVS or RC snubber across the primary to clamp the inductive kickback within the 30V rating.
Được đề xuất
DC-AC Inverter Power Stage
In a DC-AC inverter below 1 kW, the IRLB4132PBF can be used in a full-bridge or push-pull topology switching a 12V or 24V DC bus at audio or low-kHz PWM frequencies. Its 78A ID rating supports inverter outputs up to roughly 500-800W continuous without paralleling devices. The logic-level gate threshold (1.0-2.5V typical VGS(th)) means a single 5V gate-driver IC can fully enhance the part, eliminating the need for a 10V bootstrap supply and simplifying the BOM.
Được đề xuất
12V High-Current Load Switch
The IRLB4132PBF is well suited as a high-side or low-side load switch for 12V industrial buses, where its 78A rating can directly drive solenoid valves, brushed DC motors, and resistive heating elements. Logic-level gate drive allows direct PWM control from a 5V microcontroller GPIO at up to ~25 kHz before switching losses dominate. A 10 kOhm gate pull-down resistor is recommended to ensure the MOSFET stays off during MCU reset or brown-out conditions.
Được đề xuất
Synchronous Rectifier in 12V Buck Converter
In a 12V-to-low-voltage synchronous buck converter, the IRLB4132PBF can serve as the low-side rectifier MOSFET, replacing a Schottky diode to gain 5-10% efficiency at heavy load. Its 3.5 mOhm RDS(on) and logic-level gate drive make it ideal for the secondary-side synchronous FET driven by a standard buck controller. Designers should ensure the controller's dead-time programming prevents shoot-through at light load, as the low RDS(on) does not limit cross-conduction current.
Được đề xuất
Brushed DC Motor Drive (H-Bridge)
A discrete H-bridge using four IRLB4132PBF devices can deliver up to ~78A continuous to a brushed DC motor in a 12V battery-powered application such as a robotic drive train or power tool. The TO-220AB package with low Rth(j-c) allows each MOSFET to dissipate ~20-30W when mounted to a shared heatsink. Bidirectional PWM speed control at 5-20 kHz is fully supported by the part's logic-level gate and low gate charge.
Được đề xuất
Telecom 12V Hot-Swap Controller
In a 12V telecom hot-swap or eFuse circuit, the IRLB4132PBF serves as the main pass element, with its RDS(on) used as the current-sense element for basic fold-back limiting. Its 78A continuous rating supports -48V-to-12V intermediate bus OR-ing or load-distribution switches. The avalanche rating of the HEXFET cell structure absorbs the inductive transients of inrush events without needing a separate TVS clamp in many designs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho IRLB4132PBF — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | IRLB4030PBF | IRFB3077PBF | IRF1405PBF | VBM1303 |
|---|---|---|---|---|---|
| Package | TO-220AB | TO-220AB - same | TO-220AB - same | TO-220AB - same | TO-220AB - same |
| Brand | Infineon | Infineon | Infineon | Infineon | VBsemi |
| Drain-Source Voltage VDS | 30 V | 30 V | 75 V | 55 V | 30 V |
| Continuous Drain Current ID (Tc=25C) | 78 A | 78 A | 75 A | 100 A | 120 A |
| RDS(on) at VGS=10V (typ) | 3.5 mOhm | 3.0 mOhm | 5.6 mOhm (at 75V) | 5.3 mOhm | 3.0 mOhm |
| Gate Threshold VGS(th) | 1.0 - 2.5 V (logic-level) | 1.0 - 2.5 V (logic-level) | 1.0 - 2.5 V (logic-level) | 2.0 - 4.0 V (standard) | 1.0 - 2.5 V (logic-level) |
| Power Dissipation (Tc=25C) | 140 W | 140 W | 200 W | 330 W | 120 W |
| Optimized Application | UPS / Inverter | UPS / Inverter | High-current switching | Automotive / industrial | High-current low-loss |
Bảo phân biệt quan trọng
- Explicitly optimized for 5V gate-drive UPS / inverter use (vsIRF1405PBF)
- Lower RDS(on) than higher-voltage drop-in alternatives (vsIRFB3077PBF)
- Proven Infineon HEXFET ruggedness and datasheet support (vsVBM1303)
Ghi chú thiết kế
The TO-220AB package of the IRLB4132PBF has a junction-to-case thermal resistance (Rth(j-c)) of approximately 1.05 C/W. At a 78 A load with 3.5 mOhm RDS(on), conduction loss alone is roughly P = I^2 x R = 78^2 x 0.0035 = 21.3 W. Without a heatsink (Rth(j-a) ~ 62 C/W), junction temperature would rise 21.3 x 62 = 1320 C - clearly impossible. A heatsink with Rth(s-a) below approximately 5 C/W keeps Tj below 150 C at this power level. Always use thermal compound or a thermal pad at the mounting interface.
Although the IRLB4132PBF is a through-hole TO-220AB part, the PCB copper pad connected to drain and source should be a minimum of 50 x 50 mm of 2 oz copper to act as a heat-spreader and reduce the junction-to-ambient thermal resistance. The gate trace should be kept short and routed away from the drain-source switching node to minimize parasitic gate-loop inductance, which can cause ringing and false triggering at high di/dt. A 10 kOhm gate-source pull-down resistor is recommended to keep the MOSFET off during MCU reset.
Three common pitfalls when using the IRLB4132PBF: (1) treating the metal tab as thermally isolated from the drain - it is internally bonded to the drain, so a grounded heatsink will short the drain to ground; use a mica washer or silicone pad. (2) Driving the gate with only 3.3V - the VGS(th) maximum is 2.5V, so a 3.3V rail may not fully enhance the part, causing high RDS(on) and overheating; use a 5V or 10V gate drive. (3) Exceeding the avalanche rating during inductive turn-off - always add a freewheeling diode, RC snubber, or TVS clamp across inductive loads to keep VDS within the 30V rating.
When using the IRLB4132PBF in a switching application above 10 kHz, the source lead inductance creates a negative feedback that slows turn-off and can cause oscillation. Minimize the source-loop area by using a Kelvin connection where the source sense and power source return are separated at the package, or use a gate driver with a true ground-reference. For high-side switching, add a small (10-100 Ohm) gate-series resistor to dampen the gate-drive loop resonance.
Thông tin tuân thủ
Pb-free (PBF suffix) per Infineon datasheet. Not AEC-Q101 qualified per Infineon datasheet disclaimer: 'this product is not qualified according to the AEC Q100 or AEC Q101 documents of the Automotive Electronics Council.' Halogen-free status not explicitly stated in available datasheet - marked unknown.
