Sprague-Goodman: Ceramic Dielectric Trimmer Capacitors: Rugged 5 mm Type

CERAMIC DIELECTRIC TRIMMER CAPACITORS

Engineering Bulletin SG-305

Rugged 5 mm Type

FEATURES

Proven rugged axle (A) design prevents electrode shifting, maximizes stability.
Plastic washer (B) between adjust shaft and ceramic rotor to absorb tuning and environmental stresses.
Special ceramic dielectric rotor with metalized electrode (C).
Flat-lapped and lubricated surfaces join for reliable capacity settings.
Solid one-piece stator electrode and terminal (D), recessed and integral with base. Cannot shift. Improves stability and resistance to humidity.
Combination spring/contact/terminal (E) maintains proper tension for smooth torque and low resistance.
Soldered connection between adjust shaft and rotor electrode eliminates contact resistance problems.
Compact form factor conserves mounting space.
Straight line capacitance curve.
Low cost for industrial and commercial applications.

SPECIFICATIONS

Operating Temperature Range: -55°C to +125°C
Voltage Rating: 250 VDC at 85°C, 125 VDC at 125°C
Dielectric Withstanding Voltage: 500 VDC at 85°C, 250 VDC at 125°C
Insulation Resistance: 10⁴ Megohms min
Torque: 30 to 140 g-cm (0.42 to 1.94 oz-in)

5 mm Models

Capacitance Range (pF)		TCC (ppm/°C)	Q min (10 MHz)	Color Code or Mark	Model No.
min	max	TCC (ppm/°C)	Q min (10 MHz)	Color Code or Mark	Model No.
1.5	*2.0	0 ± 250	300	Black	GKU4R000
2.0	*8.0	N100 ± 200	300	Red	GKU6R000
2.8	*12.0	N600 ± 300	300	None	GKU10000
3.3	**20.5	N800 ± 300	300	Blue	GKU18000
3.8	*28.5	N1350 ± 650	200	Purple	GKU25000
4.5	30.0	N1350 ± 650	200	Orange	GKU30000
5.0	40.0	N1600 ± 800	200	Brown	GKU40000
6.0	50.0	N1300 ± 500	150 (1MHz)	Green	GKU50000
7.0	60.0	N1300 ± 500	150 (1MHz)	Pink	GKU60000
15.0	90.0	N1500 ± 800	100 (1MHz)	None	GKU90000

* Re-rated in 1992
** Re-rated in 1986

All dimensions are in/mm.
Unless otherwise specified, the tolerance on all dimensions is ±0.004/0.1.

Engineering Bulletin SG-305 Contents

Ceramic Trimmer Capacitors - SURFTRIM® Surface Mount Ceramic GKRP Series
SURFTRIM® Surface Mount: GKY Washable Series
SURFTRIM® Surface Mount: GKY Standard Series
SURFTRIM® Surface Mount: GKYB Economy Series
SURFTRIM® Surface Mount: Sealed and Unsealed Construction: GKG _ _ _ 86, 87, 88, 96 Series
Plastic Encased Type: 4 x 4.5 mm Leaded GKG _ _ _ 24, 84 Series
Plastic Encased Type: 6 mm Leaded GKG _ _ _ 11, 51, 12, 52 Series
Economical 6 mm Type Top Adjust Leaded GKG _ _ _ 15 Series
Economical 6 mm Type Bottom Adjust Leaded GKG _ _ _ 16 Series
Rugged 5 mm Type: GKU _ _ _ 00 Series
Economical 5 mm Type: GKU _ _ _ 10 Series
7 mm Type: GKT Series
Thin 2 mm & 3 mm Types: GKH and GKX Series
Carrier and Reel Specifications
Specification Notes
Soldering and Cleaning of Ceramic Trimmer Capacitors