ProjectsPricingInsights

Best Alternatives to SMD4532-075NF

Package: SMD4532RUILONCircuit ProtectionDC Spark-over Voltage: 75 V ±30% at 100 V/sMaximum Impulse Spark-over Voltage: 600 V at 1000 V/µsNominal Impulse Discharge Current: 2 kA, 8/20 µsImpulse Withstanding Voltage: 6 kV, 10/700 µs, 40 ΩAlternating Discharge Current: 2 A, 50 Hz, 1 s

SMD4532-075NF is a 75V 3kA 1812 SMD GDT. Same-size alternatives need surge and spark-over voltage review.

AI replacement insight

Electrical riskhigh

surge current differs

Package riskmedium

1812 matches, pinout unverified

Firmware risklow

passive protector

Sourcing riskmedium

lifecycle is sparse

Can it be replaced directly?

No verified pin-compatible replacement is proven from the provided fields.

Best replacement path

Start with 1812-090, then verify pad layout, 8/20us surge rating, and capacitance.

Main risk

Most candidates have lower 2kA surge rating than the 3kA target.

Recommended alternatives

2
1812-090 package
1812-090

FTR Qiaoguang

Needs validationmedium risk

1812-090 is a same-size 90V GDT candidate with lower surge capability.

View details

Alternative comparison matrix

Feature / factorSMD4532-075NF1812-0901812-150Alt 3Compatibility / risk
ApplicationGDTGDTGDTGDT — same protection role; 1812-150: same protection role
Package1812181218121812 — same size code; 1812-150: same size code
Pinout2 poles2 pins2 pins2 pins — PDF not checked; 1812-150: PDF not checked
Voltage75V ±30%90V150V90V / 150V — within target band; 1812-150: higher firing voltage
Current3kA2kA2kA2kA — lower surge rating; 1812-150: lower surge rating

Application & sourcing insights

Questions & answers

1812-090 is the closest kept candidate, but its 2kA surge rating is lower than the 3kA target.