Is there a pin-compatible replacement for IR2104STRPBF?

No candidate is confirmed to be a 100% pin-compatible, drop-in replacement. The IR2304STRPBF is likely the closest in pinout, but this must be verified by comparing datasheets, and its electrical differences (deadtime) still require review.

What risks should I check before replacing IR2104STRPBF?

Before replacing, you must verify three critical parameters: 1) Deadtime: ensure the new part's deadtime is sufficient to prevent shoot-through in your power stage. 2) Input Logic: confirm compatibility with your controller (e.g., single input vs. HIN/LIN). 3) Pinout: always verify the pin-for-pin function in the datasheets.

IR2104STRPBF Alternatives, Datasheet & Cross Reference | Infineon

The Infineon IR2104STRPBF is a high-voltage, high-speed half-bridge gate driver in an 8-SOIC package, featuring a 600V offset and integrated deadtime for driving MOSFETs or IGBTs. Finding a replacement requires careful matching of its critical timing and input characteristics.

AI replacement insight

Electrical riskhigh

Deadtime and propagation delay differences can cause shoot-through or timing issues.

Package risklow

Several alternatives share the same 8-SOIC package, but pinout must still be verified.

Firmware riskmedium

Alternatives with different input logic (e.g., HIN/LIN) require firmware changes to generate deadtime.

Can it be replaced directly?

No direct, pin-to-pin, drop-in replacement for the IR2104STRPBF has been identified among the candidates. All viable alternatives require engineering review due to differences in deadtime or input logic.

Best replacement path

The IR2304STRPBF is functionally the closest candidate, but its much shorter deadtime (100ns vs 520ns) must be validated for your specific MOSFETs to prevent shoot-through. If your design can provide external deadtime, the IR2101STRPBF is a viable option.

Main risk

The primary risk is catastrophic failure from shoot-through if a replacement's deadtime is too short for the power switches. A secondary risk is malfunction due to incompatible input logic.

Recommended alternatives

A close functional alternative with a significantly shorter internal deadtime that must be verified for the application.

View details

Alternative comparison matrix

Feature / factor	IR2104STRPBF	IR2304STRPBF	IR2101STRPBF	IRS21867STRPBF	Compatibility / risk
Package	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC — Package is form-factor compatible.; IR2101STRPBF: Package is form-factor compatible.; IRS21867STRPBF: Package is form-factor compatible.
Deadtime	520ns	100ns	-	-	100ns — Significantly shorter deadtime requires careful power stage analysis to prevent shoot-through.
Voltage	10V ~ 20V	10V ~ 20V	600V	-	10V ~ 20V / 600V — Supply and offset voltage ratings match.; IR2101STRPBF: Maximum offset voltage matches.
Lifecycle	Active	-	-	-	- — Candidate lifecycle is not listed as Active.
Interface	Single Input + SD	-	Independent HIN/LIN	Independent Inputs	Independent HIN/LIN / Independent Inputs — Target has single input with internal logic; candidate requires two inputs and external deadtime generation.; IRS21867STRPBF: Functionally different input logic requires external deadtime generation.
Propagation Delay	680ns / 150ns	-	160ns / 150ns	170ns	160ns / 150ns / 170ns — Turn-on delay is significantly faster, requiring system timing review.; IRS21867STRPBF: Propagation delay is much faster, affecting system timing.
Current	130mA / 270mA	-	130mA / 270mA	4.0A	130mA / 270mA / 4.0A — Peak drive current matches target.; IRS21867STRPBF: Significantly higher drive current may require gate resistor changes to manage switching speed.

Application & sourcing insights

Questions & answers

The IR2304STRPBF is functionally the most similar but requires careful review of its shorter deadtime. The IR2101STRPBF is another option if your design can be modified to provide external deadtime signals.