diff --git a/carrier/Power.kicad_sch b/carrier/Power.kicad_sch
index f29c18e..131b83d 100644
--- a/carrier/Power.kicad_sch
+++ b/carrier/Power.kicad_sch
@@ -2002,7 +2002,7 @@
 		(exclude_from_sim no) (in_bom yes) (on_board yes) (dnp no)
 		(uuid "307c2b9f-38c6-58a7-8692-3a828d80213e")
 		(property "Reference" "C_BULK1" (at 172.72 79.01 0) (effects (font (size 1.27 1.27)) (justify left)))
-		(property "Value" "100u/25V" (at 172.72 81.01 0) (effects (font (size 1.27 1.27)) (justify left)))
+		(property "Value" "100u/35V" (at 172.72 81.01 0) (effects (font (size 1.27 1.27)) (justify left)))
 		(property "Footprint" "Capacitor_SMD:CP_Elec_8x10" (at 170.18 80.01 0) (effects (font (size 1.27 1.27)) (hide yes)))
 		(property "Datasheet" "" (at 170.18 80.01 0) (effects (font (size 1.27 1.27)) (hide yes)))
 		(property "Description" "" (at 170.18 80.01 0) (effects (font (size 1.27 1.27)) (hide yes)))
diff --git a/tools/build_power.py b/tools/build_power.py
index 47b8fa8..b9916f3 100644
--- a/tools/build_power.py
+++ b/tools/build_power.py
@@ -201,7 +201,7 @@ place("Transistor_FET:Q_NMOS_GDS", "Q_REV", "CSD18540 (Vds>=30V)", "Package_TO_S
       140, 90, {'1': 'GATE_REV', '2': 'VIN_PROT', '3': '+15V_IN'})
 place("Device:C", "C_VCAP", "1u", "Capacitor_SMD:C_0402_1005Metric", 120, 100, {'1': 'VCAP_REV', '2': GND})
 tvs = place("Device:D_TVS", "TVS_IN", "SMBJ18A", "Diode_SMD:D_SMB", 160, 80, {'1': 'VIN_PROT', '2': GND})
-place("Device:C_Polarized", "C_BULK1", "100u/25V", "Capacitor_SMD:CP_Elec_8x10", 170, 80, {'1': 'VIN_PROT', '2': GND})
+place("Device:C_Polarized", "C_BULK1", "100u/35V", "Capacitor_SMD:CP_Elec_8x10", 170, 80, {'1': 'VIN_PROT', '2': GND})  # 35V: must survive SMBJ18A clamp (<=29.2V surge)
 place("Device:C", "C_BULK2", "10u/50V", "Capacitor_SMD:C_1210_3225Metric", 180, 80, {'1': 'VIN_PROT', '2': GND})
 # PWR_FLAGs co-located exactly on real pins so they bind: +15V_IN @ D_REV.6 (ANODE),
 # VIN_PROT @ TVS.1 (a power_in driver for VIN_PROT, needed once bucks consume it).