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Best Alternatives to ESD3V3B03-323

Package: SOD-323TECH PUBLICTVS - DiodesOperating Voltage: 3.3 VPeak Pulse Power: 100 WJunction Capacitance: 0.3 pFBreakdown Voltage: 4 V - 6 VClamping Voltage: 5 V (at 1A)

ESD3V3B03-323 is an ultra-low capacitance (0.3pF) TVS diode for 3.3V high-speed data line protection. Finding a direct replacement requires careful matching of capacitance and clamping voltage.

AI replacement insight

Electrical riskhigh

Capacitance and clamping voltage are critical and often differ, impacting performance and protection.

Package risklow

SOD-323 is a common package, ensuring form-fit compatibility.

Can it be replaced directly?

No direct drop-in replacement has been identified due to the target's ultra-low 0.3pF capacitance. All viable candidates have higher capacitance, which is a critical parameter for high-speed lines.

Best replacement path

TPGC03C is the closest functional match, but requires capacitance verification for high-speed applications.

Main risk

Signal degradation due to higher junction capacitance in alternative parts.

Recommended alternatives

3
TPGC03C package
TPGC03C

TECH PUBLIC

Needs validationmedium risk

A functional alternative in the same package with matching voltage, but higher capacitance requires verification.

View details

Alternative comparison matrix

Feature / factorESD3V3B03-323TPGC03CSPD9103WWS03DLC-B-ESCompatibility / risk
PackageSOD-323SOD-323SOD-323SOD-323SOD-323 — Same package and pin count.; SPD9103W: Same package and pin count.; WS03DLC-B-ES: Same package and pin count.
Voltage3.3V3.3V3.3V3.3V3.3V — Working voltage matches.; SPD9103W: Working voltage matches.; WS03DLC-B-ES: Working voltage matches.
Clamping Voltage5V @ 1A5V @ 1A9V @ 1A9V @ 1A5V @ 1A / 9V @ 1A — Clamping voltage matches.; SPD9103W: Significantly higher clamping voltage offers weaker protection.; WS03DLC-B-ES: Significantly higher clamping voltage offers weaker protection.
Capacitance0.3 pF1.0 pF1.0 pF1.2 pF1.0 pF / 1.2 pF — Higher capacitance may impact high-speed signals.; SPD9103W: Higher capacitance may impact high-speed signals.; WS03DLC-B-ES: Higher capacitance may impact high-speed signals.
Power100W260W--260W — Higher peak pulse power offers more robust protection.

Application & sourcing insights

Questions & answers

TPGC03C is a functional alternative with the same 3.3V working voltage and SOD-323 package. However, its higher capacitance (1.0pF vs 0.3pF) must be evaluated for signal integrity in high-speed applications.