Revision March 1,2022

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For technical questions, contact: tech@unsemi.com.tw

ROHS

Spark Gap Protectors (SPG)

Specifications are subject to change without notice.

Please refer to www.unsemi.com.tw for current information.

3/5

UNC Series

Test Methods and Results

Measure starting discharge voltage (Vs) by gradually increasing

applied DC voltage. Test current is 0.5mA max. And the DC voltage

ascends up within 100V/s(Vs＜1000V) or 500V/s(Vs≥1000V).

Measure the insulation resistance across the terminal at regular

voltage. But the test voltage doesn’t over the DC spark-over voltage.

Measure the electrostatic capacitance by applying a voltage of less

than 6V (at 1KHz) between terminals.

10KV with 1500pf condenser is discharged through 2KΩ resistor.

200 times at an interval of 10sec.

1.2/50μs & 8/20μs, 500A, electrically connected with a resistor

(1~2 Ω), ±5 times, each time interval 60 seconds. Thereafter, outer

appearanceshall be visually examined.

Measurement after -40℃/1000 HRS & normal temperature/2 HRS

Measurement after 125℃/1000 HRS & normal temperature/2 HRS

Measurement after humidity 90~95℃(45℃) /1000 HRS & normal

temperature/2 HRS.

10 times repetition of cycle -40℃/30min →normal, temp/2 min

→125℃/30min, measurement after normal temp/2 HRS.

Apply flux and immerse in molten solder 230±5℃ for 3sec up to the

point of 1.5mm from body. Check for solder adhesion.

Measurement after lead wire is dipped up to the point of 1.5mm from

body into 260±5℃ solder for 10sec.

Rate-of-change, within±30%

insulation resistance &

capacitance, conformed to

rated spec.

∣△ ∣

Vs/Vs ≤30%

Characteristics of other items

must meet the specified value

No crack and no failures

Features are conformed to

rated spec.

Lead wire is evenly covered

by solder

Conformed to rated spec.

Standard

Test Method

Items

DC Spark-over Voltage

Insulation Resistance

Capacitance

Static Life

Surge Current Capacity

Cold Resistance

Heat Resistance

Humidity Resistance

Temperature Cycle

Solder Ability

Solder Heat

Pull Strength

Flexural Strength

Apply 0.5kg load for 10sec

Bend lead wire at the point of 2mm from body under

0.25 load and back to its original point. Repeat 1 time.

Lead shall not pull out to snap