AS & ASH Types

Typical Applications

• Impulse generators
• Charge-discharge of capacitors
• X-ray generators
• Protection of rectifiers
• Dummy load
• High frequency circuits
• Surge absorption
• Grounding resistance
• Nuclear fusion devices
• High-voltage circuits, etc.

Descriptions

AS and ASH with a large thermal capacity have features of unsurpassed strength against impulse voltage and higher durability. These non-inductive resistors are ideal for such applications shown right.

CHARACTERISTICS

Item	AS. ASH Characteristics
Working temperature:	230 °C
Temperature coefficient:	-0.15% / °C Max.
Voltage coefficient:	-5%/kV/cm Max. For specific resistance of 3000 Ohm cm or lower, refer to below.
Withstand voltage: (1.2×50 µsec)	5kV/cm Max.
Load life stability (500h)	±7% Max.
Short time overload: (10 times of rated power for 5 sec)	±2% Max.
Bulk density:	2.65
Specific heat:	0.15 - 0.3cal/g°C
Max operating temperature:	250 °C
Short time allowable injection energy	90J/cc Max.

AS STANDARD SPECIFICATIONS

Type No.	Rated Power (W)	Dimensions (mm) ØD	Ø d	L	L1
ER 2AS	2	4.5±1.0	-	20±1.0	38±2
ER 3AS	3	8.5±1.0	-	25±1.0	38±2
ER 5AS	5	8.5±1.0	-	40±1.0	38±2
ER 10AS	10	14±0.5	8	60±0.8	10±2
ER 20AS	20	14±0.5	8	80±1.0	10±2
ER 30AS	30	20±0.7	14	100±1.0	13±2
ER 50AS	50	20±0.75	14	200±1.2	15±2
ER 80AS	80	25±1.0	18	250±1.5	22±2
ER 100AS	100	25±1.0	18	300±1.5	22±2
ER 150AS	150	40±1.25	28	300±1.5	22±2
ER 270AS	270	50±1.5	38	450±2.0	25±3

Type No.	Max Allowable Impulse Voltage (kV) 1.2×50µsec	Resistance Value Range (Ohm)	Allowable Injection Energy (joule)
ER 2AS	3.5	10 - 56k	14
ER 3AS	4.5	10 - 18k	80
ER 5AS	9	10 - 33k	140
ER 10AS	20	18 - 22k	370
ER 20AS	30	27 - 27k	560
ER 30AS	35	22 - 22k	1060
ER 50AS	70	47 - 56k	2450
ER 80AS	80	47 - 47k	4360
ER 100AS	100	56 - 100k	5430
ER 150AS	100	27 - 27k	14760
ER 270AS	160	22 - 22k	29850

ER2AS through ER5AS will be supplied with lead wires.
ER10AS through ER270AS will be supplied with terminals as options, if so requested with an order.
(The details on the terminals are shown at " STANDARD TERMINALS").
If the resistor is expected to be used in oil, please advise in placing an order. The resistor will be
supplied with oil-resisting coating durable at operating temperature of 85 °C maximum.

Standard Resistance

While the resistance values available currently are as shown above, those frequently ordered are now standardized.
The resistors with the standard resistance values will be supplied with a shorter delivery.

AS STANDARD RESISTANCE VALUES

Type No.	Standard Resistance (Ohm)						Resistance Tolerances ±10%
ER 2A	5.6	10	22	47	100	220	470	1k
ER 3AS		10	22	47	100	220	470	1k	2.2k
ER 5AS	5.6	10	22	47	100	220	470	1k	2.2k	4.7k
ER 10AS				47	100	220	470	1k
ER 20AS					100	220	470	1k	2.2k
ER 30AS					100	220		1k	2.2k	4.7k
ER 50AS				47	100		470	1k	2.2k	4.7k
ER 80AS				47	100	220		1k		4.7k
ER 100AS				47	100	220	470	1k		4.7k
ER 150AS					100		470	1k	2.2k	4.7k
ER 270AS					100		470	1k	2.2k	4.7k

ASH STANDARD SPECIFICATIONS (High Withstand Resistance Type)

Type No.	Rated Power (W)	Dimensions (mm) ØD	Ø d	L	L1
ER 20ASH	20	12±0.1	10±0.5	200±2	19±0.1
ER 40ASH	40	12±0.1	10±0.5	300±2	19±0.1
ER 60ASH	60	16±0.1	14±0.5	400±2	19±0.1
ER 80ASH	80	16±0.1	14±0.5	500±3	19±0.1
ER 100ASH	100	16±0.1	14±0.5	600±3	19±0.1

Type No.	Max Allowable Impulse Voltage (kV) 1.2×50µsec	Resistance Value Range (Ohm)	Allowable Injection Energy (joule)
ER 20ASH	85	10 - 100k	1.3k
ER 40ASH	100	20 - 170k	2.0k
ER 60ASH	150	10 - 120k	5.5k
ER 80ASH	185	15 - 150k	7.0k
ER 100ASH	225	20 - 180k	8.5k

If the resistor is expected to be used in oil, please advise in placing an order.
The resistor will be supplied with oil-resisting coating durable at operating temperature of 85°C maximum.