Is there a pin-compatible replacement for SDV1608E5R5C180NPTF?

Several parts like SDV1608E5R5C500NPTF share the 0603 package, making them form-factor compatible. However, electrical differences, especially in capacitance, mean they are not guaranteed drop-in replacements and require engineering review.

What risks should I check before replacing SDV1608E5R5C180NPTF?

Key risks include: 1) Higher capacitance affecting high-speed signal lines, 2) Different varistor voltage causing improper turn-on, and 3) Higher clamping voltage offering less protection to downstream components.

SDV1608E5R5C180NPTF Alternatives, Datasheet & Cross Reference | Shenzhen Sunlord Electronics Co., Ltd.

SDV1608E5R5C180NPTF is a 0603 multilayer varistor for 5.5V DC applications. Finding a replacement requires matching the 18V clamping voltage, 18pF capacitance, and varistor voltage range to ensure proper circuit protection.

AI replacement insight

Electrical riskmedium

Capacitance and clamping voltage differences require review.

Package risklow

The 0603 package is a standard and widely available.

Sourcing risklow

Multiple alternatives with the same form factor exist.

Can it be replaced directly?

No direct drop-in replacement has been identified. The closest candidates have different capacitance or clamping voltages that require engineering review.

Best replacement path

The closest option is SDV1608E5R5C500NPTF, a family variant from Sunlord. Review its higher capacitance.

Main risk

The primary risk is mismatched capacitance, which can degrade signal integrity in high-frequency applications.

Recommended alternatives

Functional alternative from the same manufacturer with matching voltages but higher capacitance.

View details

Alternative comparison matrix

Feature / factor	SDV1608E5R5C180NPTF	SDV1608E5R5C500NPTF	V5.5MLA0603NH	RL0603A8R0K	Compatibility / risk
Package	0603	0603 (1608 Metric)	0603	0603	0603 (1608 Metric) — Matches form factor.; V5.5MLA0603NH: Matches form factor.; RL0603A8R0K: Matches form factor.
Voltage	5.5 V	5.5 V	5.5 V	5.6 V	5.5 V / 5.6 V — Max DC working voltage matches.; V5.5MLA0603NH: Max DC working voltage matches.; RL0603A8R0K: Max DC working voltage is comparable.
Clamping Voltage	18 V	18 V	17.5 V	22.2 V	18 V / 17.5 V / 22.2 V — Max clamping voltage matches.; V5.5MLA0603NH: Slightly lower clamping voltage offers better protection.; RL0603A8R0K: Higher clamping voltage offers less protection.
Capacitance	18 pF	50 pF	960 pF	Not specified	50 pF / 960 pF / Not specified — Higher capacitance may affect high-speed signals.; V5.5MLA0603NH: Significantly higher capacitance, unsuitable for high-speed lines.; RL0603A8R0K: Capacitance value is missing.
Current	3.0 A	Not specified	-	-	Not specified — Surge current rating is missing.
Varistor Voltage	10.0 - 14.0 V	-	7.1V - 9.3V	-	7.1V - 9.3V — Lower varistor voltage range.

Application & sourcing insights

Questions & answers

SDV1608E5R5C500NPTF from the same manufacturer is a strong functional alternative, but its higher capacitance (50pF vs 18pF) must be evaluated for your application.