IRLZ34NSTRLPBF - 55V 30A N-Ch HEXFET MOSFET, D2PAK | Infineon
MPN: IRLZ34NSTRLPBF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.4 | $1.40 |
| 10 | $1.12 | $11.20 |
| 100 | $0.85 | $85.00 |
| 500 | $0.68 | $340.00 |
| 1,000 | $0.58 | $580.00 |
Drop-in alternatives for IRLZ34NSTRLPBF — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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View Datasheet →IRLZ34NSTRLPBF Maximum Ratings & Electrical Characteristics
| FET Type | N-Channel |
| Drain-to-Source Voltage (VDS) | 55 V |
| Continuous Drain Current (ID) at TC | 30 A |
| Pulsed Drain Current (IDM) | 110 A |
| RDS(on) at VGS=5V | 35 mOhm (typical) |
| Gate Threshold Voltage (VGS(th)) | Logic-level (5 V drive compatible) |
| Total Gate Charge (Qg) | 16.7 nC |
| Power Dissipation (Ta) | 3.8 W |
| Power Dissipation (Tc) | 68 W |
| Package | D2PAK (TO-263), surface mount |
| Built-in Body Diode | Yes |
| Configuration | Single with built-in diode |
| Mounting Type | Surface Mount |
| Switching Frequency Optimization | Below 100 kHz |
| Cell Structure | HEXFET planar (5th generation) |
| Qualification | JEDEC standard |
| RoHS Status | Compliant (Pb-free) |
IRLZ34NSTRLPBF Pin Configuration
| Pin 1 | Gate — Logic-level gate input; drive with 5 V CMOS |
| Pin 2 | Drain — Drain connection (also electrically tied to the metal tab) |
| Pin 3 | Source — Source connection |
| Pin Tab | Drain (Tab) — Metal tab internally connected to Drain; must be soldered to PCB copper pad for thermal dissipation |
Safe Operating Area (DC, Ta=25 C)
Typical Applications
IRLZ34NSTRLPBF is suitable for 6 applications: 12 V Automotive Lighting Drivers, DC Motor Drive (Brushed), Solenoid and Valve Driver, PWM-Controlled Lighting Ballast, Relay Replacement (Solid-State Switch), Battery Protection and Load Switching.
12 V Automotive Lighting Drivers
The IRLZ34NSTRLPBF's 55 V VDS rating provides substantial margin over 12 V automotive rails that can swing to 35-40 V during load-dump events. Logic-level gate drive enables direct 5 V GPIO control from automotive microcontrollers without a gate driver stage, simplifying headlamp, tail-light, and interior LED driver circuits. The 35 mOhm RDS(on) at VGS=5 V keeps conduction losses manageable at 5-10 A continuous loads, and the D2PAK tab solders to copper pour that doubles as a thermal dissipation area.
Recommended
DC Motor Drive (Brushed)
The IRLZ34NSTRLPBF delivers 30 A continuous drain current, more than adequate for brushed DC motors up to roughly 200 W at 24 V. Logic-level gate input means the H-bridge or half-bridge can be driven directly from 5 V logic outputs or simple half-bridge driver ICs. The 16.7 nC Qg keeps PWM transition losses low for switching frequencies in the 1-25 kHz audible-noise-avoidance band. Freewheeling current is handled by the built-in body diode, simplifying PCB layout.
Recommended
Solenoid and Valve Driver
Solenoids and fuel injection valves draw high inrush currents that decay through inductance once switched off, generating flyback voltages. The IRLZ34NSTRLPBF's avalanche-rated silicon and wide SOA tolerate unclamped inductive turn-off events, simplifying the drive circuit by eliminating external flyback diodes or TVS clamps. Logic-level gate drive allows direct microcontroller GPIO control in 12 V and 24 V industrial pneumatic systems.
Recommended
PWM-Controlled Lighting Ballast
For PWM-dimmed LED strings, the IRLZ34NSTRLPBF's low gate charge (16.7 nC) supports PWM dimming frequencies up to several kHz without significant drive losses. The MOSFET can sit on the low side of an LED string with the drain tied to the LED cathode, switching at logic-level duty cycles from a microcontroller. The 55 V rating handles long strings while keeping conduction losses below 5% at typical currents.
Recommended
Relay Replacement (Solid-State Switch)
The IRLZ34NSTRLPBF replaces electromechanical relays in 12 V/24 V systems where silent operation, longer life, and faster switching are required. At logic-level gate drive, the MOSFET turns on in microseconds versus relay coil delays of milliseconds, and bounces are eliminated entirely. The D2PAK surface-mount package simplifies automated assembly, while the 30 A continuous rating covers most relay-replacement applications including heating elements and fan control.
Recommended
Battery Protection and Load Switching
The IRLZ34NSTRLPBF is widely used as a low-side disconnect switch in battery management systems for 12 V lead-acid and Li-ion packs. The logic-level gate allows enable control from a battery monitor IC, while the 35 mOhm RDS(on) at VGS=5 V adds minimal voltage drop during discharge. The D2PAK package handles the steady-state and short-duration inrush currents typical of cordless power tools and e-bike battery packs. Built-in body diode permits bidirectional current flow during precharge.
Recommended
Recommended Products Summary
Engineering reference data for IRLZ34NSTRLPBF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | IRLZ34NSPBF | IRFR1205TRPBF | IRFR5305TRLPBF | IRF5305STRLPBF | IRFR5410TRRPBF | IRFS4010TRLPBF |
|---|---|---|---|---|---|---|---|
| Package | D2PAK (TO-263) | D2PAK (TO-263) - same | D2PAK (TO-263) - same | D2PAK (TO-263) - same | D2PAK (TO-263) - same | D2PAK (TO-263) - same | D2PAK (TO-263) - same |
| Brand | Infineon | Infineon - same | Infineon - same | Infineon - same | Infineon - same | Infineon - same | Infineon - same |
| Polarity | N-Channel | N-Channel | N-Channel | P-Channel | P-Channel | N-Channel | N-Channel |
| Drain-to-Source Voltage (VDS) | 55 V | 55 V | 55 V | 55 V | 55 V | 100 V | 100 V |
| Continuous Drain Current (ID) | 30 A | 30 A | 44 A | 31 A | 31 A | 13 A | 180 A |
| RDS(on) at VGS=5V | 35 mOhm | 35 mOhm | 27 mOhm | 65 mOhm (P-ch) | 65 mOhm (P-ch) | 120 mOhm | 4 mOhm |
| Logic-Level Gate Drive | Yes (5 V) | Yes (5 V) | Yes (5 V) | Yes (5 V) | Yes (5 V) | Yes (5 V) | Yes (5 V) |
| Built-in Body Diode | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Logic-level gate drive at standard RDS(on) (vs IRF540NPBF (standard 10 V gate drive))
- Surface-mount D2PAK for reflow assembly (vs IRLZ44NPBF (TO-220 through-hole))
- N-channel polarity for low-side switching (vs IRF5305STRLPBF (P-channel in same D2PAK))
Design Notes
The D2PAK tab is electrically tied to the Drain and must be soldered to a PCB copper pad for both electrical and thermal performance. Estimated: at 30 A continuous drain current with 35 mOhm RDS(on), conduction losses reach roughly P = I²R = 900 * 0.035 = 31.5 W, far exceeding the 3.8 W Ta rating. A copper pour of at least 1 square inch (645 mm²) on the drain tab is mandatory to keep Tj below 150 C; without it, the device will thermally limit at much lower currents.
Use a minimum 2 oz copper layer (70 µm) on the drain tab pad for optimal thermal spreading, and place thermal vias (0.3 mm drill, 1 mm pitch) connecting the top copper to inner planes and bottom copper. The Gate trace should be kept short and routed away from switching nodes to minimize gate-loop inductance; add a 10-100 ohm gate-source resistor to prevent inadvertent turn-on from dV/dt coupling. A gate-source Zener clamp (typically 12-15 V) protects against over-voltage transients on the gate oxide.
Keep the source return path (low-inductance ground) as short as possible; the switching current loop should be minimized to reduce EMI and ringing. Place input/output bulk capacitors close to the MOSFET drain and source pads to localize the high-di/dt loop. For half-bridge and H-bridge designs, mirror the layout across the symmetry plane so source-current paths in both halves share the same parasitic inductance, balancing transient behavior.
Do not assume the D2PAK tab can be left floating in a thermally-isolated layout - the tab is the primary heat path. Avoid using IRLZ34NSTRLPBF above the 30 A continuous rating without active cooling or substantial copper; the part will enter thermal shutdown (or fail) well before that current if Ta exceeds 25 C. Finally, never drive the gate above the absolute maximum VGS of +/- 10 V (logic levels); use a gate-source Zener if the upstream driver can swing higher due to ringing.
Compliance Information
Pb-free and RoHS compliant per Infineon product page. JEDEC qualified. AEC-Q100 automotive qualification is not explicitly listed for this part - if AEC-Q100 is required for automotive designs, an Infineon automotive-grade alternative should be selected and verified.
