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Standard Products Guide

About Standard Products

Features of Standard Products

  • Superior electrical characteristics
  • Superior functional characteristics
  • High heat resistance
  • Long service life
  • Low water absorbency
  • Low out-gassing

Bead Insulators for High Voltage Circuit Wiring

Our fine ceramic bead insulators offer excellent flexibility of form and high consistency through precision machining of the curved surfaces, and are used in all types of electrical circuits, playing an important role in various fields over many years.
As for the electrical characteristics, etc., they have been designed to be suitable for any requirements as insulators in circuits requiring high voltage wiring or high-frequency, high-voltage wiring ranging from low-frequency to radio frequency bands.

Order Sheet
・・・Discontinued when stock runs out.
Type Name Dimensions/Tolerance Material Unit Price
(sales tax not included)
1,000 units/lot
φA
(Outer Diameter)
φB
(Inner Diameter)
C
(Height)
(D)
A-1 2.5 ±0.2 1.2 ±0.15 5.0 ±0.2 (1.0) Steatite ¥18
A-2 5.0 ±0.2 2.0 ±0.15 5.0 ±0.2 (1.6) Alumina ¥26
A-3 6.6 ±0.3 3.8 ±0.2 6.4 ±0.3 (2.0) Steatite ¥28
A-4 11.0 ±0.4 5.0 ±0.2 11.0 ±0.4 (4.0) Steatite ¥26
A-5 2.5 ±0.2 1.2 ±0.15 2.5 ±0.2 (1.0) Alumina ¥26
A-6 6.6 ±0.3 3.8 ±0.2 6.4 ±0.3 (2.0) Alumina ¥28
A-7 2.0 ±0.2 0.75 ±0.15 2.5 ±0.2 (0.4) Alumina ¥22
A-8 5.0 ±0.2 2.5 +0.30 5.0 ±0.2 (1.6) Alumina ¥27
  • We request a minimum order quantity of 1,000 units.
  • We request that orders be placed in increments of 1,000 unit lots.
  • There is an additional packaging and shipping fee (usually ¥1,500).
  • For standard products, the packaging and shipping fee will be waived for single orders of greater than ¥30,000. (The fee will apply to orders of exactly ¥30,000.)

Spacers

These ceramic spacers offer superior insulation and heat resistance.
They are low out-gassing, so they are widely used as components in analytical instruments such as ion sources for materials analysis equipment, as well as in vacuum equipment.

Order Sheet
・・・Discontinued when stock runs out.・・・End of production (can be made to order)
Type Name Dimensions/Tolerance Material Unit Price
(sales tax not included)
Order Lot
φA
φB
C
BA-1 5.0 ±0.1 2.2 ±0.15 2.0 ±0.v Alumina ¥480 10 units/1 lot
¥430 20 units/2 lot
¥390 30 units/3 lot
¥350 40 units/4 lot
¥320 50 units/5 lots or more
BA-2 5.0 ±0.2 3.3 +0.2
-0.05
5.0 ±0.1 Alumina ¥540 10 units/1 lot
¥490 20 units/2 lot
¥440 30 units/3 lot
¥400 40 units/4 lot
¥360 50 units/5 lots or more
BA-3 7.0 ±0.2 5.1 +0.1
-0.05
2.5 ±0.1 Alumina ¥600 10 units/1 lot
¥540 20 units/2 lot
¥490 30 units/3 lot
¥440 40 units/4 lot
¥400 50 units/5 lots or more
BA-4 8.3 ±0.3 3.6 ±0.2 1.0 ±0.1 Alumina ¥680 10 units/1 lot
¥620 20 units/2 lot
¥560 30 units/3 lot
¥510 40 units/4 lot
¥460 50 units/5 lots or more
BA-5 16.0 ±0.3 6.0 ±0.3 3.0 ±0.1 Alumina ¥720 10 units/1 lot
¥650 20 units/2 lot
¥600 30 units/3 lot
¥550 40 units/4 lot
¥500 50 units/5 lots or more
BS-1 4.0 ±0.15 2.0 +0.15
-0
1.4 ±0.15 Steatite ¥420 10 units/1 lot
¥400 20 units/2 lot
¥380 30 units/3 lot
¥360 40 units/4 lot
¥330 50 units/5 lots or more
BS-2 5.5 ±0.15 2.0 +0.2
-0.01
1.0 ±0.15 Steatite Inquiry required Can be made to order
Minimum order quantity:10 units/Lot
Minimum order unit:10 units
Extra shipping fee less than ¥30,000
BS-3 12.0 ±0.3 3.3 +0.2
-0.05
5.0 ±0.1 Steatite Inquiry required Can be made to order
Minimum order quantity:10 units/Lot
Minimum order unit:10 units
Extra shipping fee less than ¥30,000
  • We request a minimum order quantity of 10 units.
  • We request that orders be placed in increments of 10 units.
  • There is an additional packaging and shipping fee (usually ¥1,500).
  • For standard products, the packaging and shipping fee will be waived for single orders of greater than ¥30,000. (The fee will apply to orders of exactly ¥30,000.)

Bushings

These products have versatile applications, such as insulators for spot faces.
They are low out-gassing, so they are widely used as components in analytical instruments such as ion sources for materials analysis equipment, as well as in vacuum equipment.

Order Sheet
・・・Discontinued when stock runs out・・・End of production (can be made to order)
Type Name Dimensions/Tolerance Material Unit Price
(sales tax not included)
Order Lot
φA φB φC D E F
CA-1 4.9 ±0.1 3.0 ±0.2 2.2 ±0.2 2.0 ±0.2 (0.5) 2.5 ±0.2 Alumina
¥660 10 units/1 lot
¥600 20 units/2 lot
¥540 30 units/3 lot
¥490 40 units/4 lot
¥440 50 units/5 lots or more
CA-2 7.0 ±0.2 4.0 +0.05
-0.1
2.1 +0.15
-0
2.0 ±0.2 (1.5) 3.5 ±0.2 Alumina
¥720 10 units/1 lot
¥650 20 units/2 lot
¥600 30 units/3 lot
¥550 40 units/4 lot
¥500 50 units/5 lots or more
CA-3 7.0 ±0.3 4.9 +0
-0.25
3.1 +0.25
-0
2.0 ±0.2 1.0 ±0.2 (3.0) Alumina
¥720 10 units/1 lot
¥650 20 units/2 lot
¥600 30 units/3 lot
¥550 40 units/4 lot
¥500 50 units/5 lots or more
CA-4 8.6 ±0.3 5.8 +0.05
-0.15
3.3 ±0.2 2.5 ±0.1 (2.3) 4.8 ±0.2 Alumina
¥920 10 units/1 lot
¥850 20 units/2 lot
¥800 30 units/3 lot
¥770 40 units/4 lot
¥700 50 units/5 lots or more
CA-5 9.0 ±0.3 6.0 ±0.15 3.2 ±0.15 3.0 ±0.2 (3.0) 6.0 ±0.3 Alumina
¥960 10 units/1 lot
¥890 20 units/2 lot
¥830 30 units/3 lot
¥790 40 units/4 lot
¥740 50 units/5 lots or more
CA-6 10.0 ±0.3 7.0 ±0.15 4.5 ±0.2 3.6 ±0.2 0.6 ±0.15 (4.2) Alumina
¥1,080 10 units/1 lot
¥1,000 20 units/2 lot
¥940 30 units/3 lot
¥910 40 units/4 lot
¥860 50 units/5 lots or more
CS-1 8.0 ±0.3 6.0 ±0.3 3.4 ±0.2 3.0 ±0.2 (0.5) 3.5 ±0.2 Steatite
¥640 10 units/1 lot
¥580 20 units/2 lot
¥530 30 units/3 lot
¥480 40 units/4 lot
¥440 50 units/5 lots or more
CS-2 10.0 ±0.3 7.0 ±0.3 4.5 ±0.2 4.0 ±0.2 (0.6) 4.6 ±0.2 Steatite
¥740 10 units/1 lot
¥670 20 units/2 lot
¥610 310 units/3 lot
¥550 40 units/4 lot
¥500 50 units/5 lots or more
CS-3 12.0 ±0.4 5.0 -0.05 3.3 ±0.2 4.0 ±0.2 (2.0) 6.0 ±0.3 Steatite Inquiry required Can be made to order
Minimum order quantity:10 units/Lot
Minimum order unit:10 units
Extra shipping fee less than ¥30,000
CS-4 12.0 ±0.3 6.0 -0.05 3.3 +0.2
-0
5.0 ±0.1 0.5 +0.15
-0.1
(5.5) Steatite Inquiry required Can be made to order
Minimum order quantity:10 units/Lot
Minimum order unit:10 units
Extra shipping fee less than ¥30,000
CS-5 15.0 ±0.4 6.0 -0.05 3.3 +0.2
-0.1
5.0 ±0.2 (2.0) 7.0 ±0.3 Steatite Inquiry required Can be made to order
Minimum order quantity:10 units/Lot
Minimum order unit:10 units
Extra shipping fee less than ¥30,000
  • We request a minimum order quantity of 10 units.
  • We request that orders be placed in increments of 10 units.
  • There is an additional packaging and shipping fee (usually ¥1,500).
  • For standard products, the packaging and shipping fee will be waived for single orders of greater than ¥30,000. (The fee will apply to orders of exactly ¥30,000.)

Collars and Bases

“There are a wide variety of applications for these products, such as separators between electrodes.
They are low out-gassing, so they are widely used as components in analytical instruments such as ion sources for materials analysis equipment, as well as in vacuum equipment.”

Order Sheet
Item Name Type Name Dimensions/Tolerance Material
Unit Price
(sales tax not included)
Order Lot
φA φB φC
Collar DA-1 6.2 ±0.15 4.2 ±0.15 2.0 ±0.1 Alumina
¥500 10 units/1 lot
¥480 20 units/2 lot
¥460 30 units/3 lot
¥440 40 units/4 lot
¥420 50 units/5 lots or more
Collar DA-2 6.2 ±0.15 4.2 ±0.15 3.0 ±0.1 Alumina
¥600 10 units/1 lot
¥570 20 units/2 lot
¥550 30 units/3 lot
¥530 40 units/4 lot
¥510 50 units/5 lots or more
Base EA-1 7.0 ±0.2 5.1 +0.1
-0.05
5.5 ±0.1 Alumina
¥730 10 units/1 lot
¥700 20 units/2 lot
¥670 30 units/3 lot
¥640 40 units/4 lot
¥610 50 units/5 lots or more
Base EA-2 7.0 ±0.2 5.1 +0.1
-0.05
9.5 ±0.1 Alumina
¥780 10 units/1 lot
¥740 20 units/1 lot
¥710 30 units/1 lot
¥680 40 units/4 lot
¥650 50 units/5 lots or more
  • We request a minimum order quantity of 10 units.
  • We request that orders be placed in increments of 10 units.
  • There is an additional packaging and shipping fee (usually ¥1,500).
  • For standard products, the packaging and shipping fee will be waived for single orders of greater than ¥30,000. (The fee will apply to orders of exactly ¥30,000.)

High Voltage Circuit Lead Wire with Insulators

This product is a lead wire with standard bead insulators attached.
We can handle a wide variety of types in addition to the example products to meet your technical specifications, so please contact us if we can help you.
Our products are used by many vacuum equipment manufacturers. (Alumina is recommended for use in a vacuum.)

We can provide an estimate for lead wires with resistors for use in high voltage circuits custom made for your company.

  • Please check the compatibility chart below before requesting an estimate via the contact form, and clearly state the model number and quantity.
  • Estimated delivery time is 1-2 weeks. (Additional consultation may be required depending on your requirements)

Lead wire with crimp contacts

図1

Lead wire without crimp contacts

図2

About the Format

When requesting an estimate, please use the following format and include the quantity required.

Example 1:NT03-300-A2-R1-R2
(300 mm lead wire combining 0.35 sq. stranded nickel wire with A2 insulators, R1.25-3 and R1.25-4 crimp contacts)

Example 2:NT03-300-A2-0-0
(Lead wire from Example 1 without crimp contacts)

Compatibility Chart
Compatibility Chart
Lead Wire Code Compatible Components
Insulators Crimp contacts
Recommended Production Capability
NT03
(Nickel, stranded wire)
A2(Alumina) A3(Steatite)
A6(Alumina)
A8(Alumina)
R1(R1.25-3)
R2(R1.25-4)
NT10
(Nickel, stranded wire)
A2(Alumina) A3(Steatite)
A6(Alumina)
A8(Alumina)
R3(R2-4)
R4(R2-5)
R5(R2-6)
NT20
(Nickel, stranded wire)
A8(Alumina) A2(Alumina)
A3(Steatite)
A6(Alumina)
R3(R2-4)
R4(R2-5)
R5(R2-6)
NT25
(Nickel, stranded wire)
A3(Steatite)
A6(Alumina)
R6(R5.5-4)
R7(R5.5-5)
R8(R5.5-6)
*Internal compatibility standard
CS20
(Copper, solid wire)
A8(Alumina) A3(Steatite)
A6(Alumina)
R6(R5.5-4)
R7(R5.5-5)
R8(R5.5-6)
Lead Wire Type

“The allowable current value is a reference value calculated for use in open atmosphere.
Please use a sufficiently safe current value during use, taking into account the usage conditions.”

Code Wire Material Solid Wire
Stranded Wire
Average Value Specifications Expected Performance
Designation Wire Diameter
(mm)
Solid Wire Diameter
(mm)
Primary Twists Secondary Twists Allowable Current
(A)
NT03 Nickel Stranded Wire 0.35sq 1.0 0.18 7 2 5
NT10 Nickel Stranded Wire 1.0sq 1.6 0.18 14 3 10
NT20 Nickel Stranded Wire 2.0sq 2.1 0.18 11×6+12×1 14
NT25 Nickel Stranded Wire 2.5sq 2.3 0.18 14 7 20
CS20 Copper Solid Wire 2mm 2.0 2.0 1 1 35
  • sq: unit for the cross-sectional area of stranded wire.
  • Specifications: wire of the “solid wire diameter” twisted by the number of “primary twists” is twisted by the number of “secondary twists.”
Insulators

“Withstand voltage is the reference value for the dielectric strength of the lead wire and outer surface of the bead resistors in atmosphere.
It varies significantly depending on usage conditions, so please give adequate consideration to safety during use.
Alumina is recommended for use in a vacuum.
99.5% Alumina is more expensive than 93% Alumina.”

Code Insulator
Type Name
Dimensions (Average Value: mm) Material Expected Performance
φA
(Outer Diameter)
φB
(Inner Diameter)
C
(Length)
Withstand Voltage
(kV)
A2 A-2 5.0 2.0 5.0 93% Alumina 4
A3 A-3 6.6 3.8 6.4 Steatite
A6 A-6 6.6 3.8 6.4 93% Alumina 4
A8 A-8 5.0 2.5 5.0 93% Alumina 3.5

High Purity Products
We can also manufacture high purity versions (99.5% Alumina) of A2, and A6.
High purity products are 93% alumina, and are both more expensive and take longer to deliver compared to steatite.
If you desire high purity, please contact us separately.

Crimp Contacts

Round Terminal (R Type): Nickel
Brazed seam
Maximum Usable Temperature: 400℃ (We do not guarantee performance.)
Depending on inventory when you place your order, the dimensions may vary slightly from those on the website.

Code Model Number Dimensions (mm) Range of Compatible Electrical Wires
φd2 B L φd1 φD t Solid Wire (φ) Stranded Wire (sq)
R1 R1.25-3 3.2 5.5 11.5 1.7 3.4 0.8 0.56〜1.44 0.25〜1.65
R2 R1.25-4 4.3 8.0 15.8 1.7 3.4 0.8
R3 R2-4 4.3 8.5 16.8 2.3 4.1 0.8 1.14〜1.82 1.04〜2.63
R4 R2-5 5.3 9.5 16.8 2.3 4.1 0.8
R5 R2-6 6.4 12.0 21.8 2.3 4.1 0.8
R6 R5.5-4 4.3 9.5 19.8 3.4 5.6 1.0 1.82〜2.89 2.63〜6.64
R7 R5.5-5 5.3 9.5 19.8 3.4 5.6 1.0
R8 R5.5-6 6.4 12.0 25.8 3.4 5.6 1.0
0 Without crimp contacts