
BORN Semiconductor
A 0603 ESD diode with a higher voltage rating but also higher capacitance and leakage current.
Reviewing alternatives for the BORN BESDU0603-14, an ultra-low capacitance ESD suppressor. Key considerations for substitutes include matching the 0.15pF capacitance and sub-nanoamp leakage for high-speed signal integrity.
Higher capacitance and leakage in alternatives require validation.
Candidates share the same 0603 package.
No direct, one-to-one replacements are available. All reviewed candidates present parametric trade-offs, primarily higher capacitance and leakage.
Use a parametric search for a 0603 ESD diode with Vrwm >= 14V, capacitance <= 0.15pF, and leakage < 1nA.
Signal integrity degradation due to higher capacitance and leakage current in all available alternatives.

BORN Semiconductor
A 0603 ESD diode with a higher voltage rating but also higher capacitance and leakage current.
| Feature / factor | BESDU0603-14 | 0603ESDA-LP(24) | BPESD0603-240 | RF1256-000 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 (1608 metric) | 0603 | 0603 | 0603 | 0603 — Form factor matches.; BPESD0603-240: Form factor matches.; RF1256-000: Form factor matches. |
| Voltage | 14V | 24V | 24V | 24V | 24V — Higher working voltage provides more margin.; BPESD0603-240: Higher working voltage provides more margin.; RF1256-000: Higher working voltage provides more margin. |
| Capacitance | 0.15pF | 0.2pF | 0.2pF | 0.25pF | 0.2pF / 0.25pF — Higher capacitance may degrade high-speed signals.; BPESD0603-240: Higher capacitance may degrade high-speed signals.; RF1256-000: Higher capacitance may degrade high-speed signals. |
| Current | <1nA | 200nA | 200nA | 10µA | 200nA / 10µA — Significantly higher leakage current.; BPESD0603-240: Significantly higher leakage current.; RF1256-000: Extremely high leakage current. |
| Clamping Voltage | 30V | - | 40V | - | 40V — Higher clamping voltage offers less protection. |
No direct drop-in replacements have been identified. Candidates like BORN's BPESD0603-240 offer the same package but have increased capacitance (0.2pF vs 0.15pF) and significantly higher leakage, requiring review.