High Voltage Phase Control SCR Thyristors 6500V – Series Overview, Specifications, Datasheets

What is High Voltage SCR Thyristors 6500V?

The 6500V disc thyristors are designed to provide the special requirements of medium-voltage soft starter applications. Power thyristors 6.5 kV are designed for high surge current capability. Optimized switching behavior allows easy scaling of soft starters for different operation voltages by number of series connected devices.

High Voltage Phase Control Thyristors SCR 6500V series are popular used in medium voltage soft starter, AC motor drives and high-power converter etc.

Typical applications for medium voltage devices are mining excavators, gas and oil pumps, compressors for cooling stations. 6500V SCR thyristors SCR are also used for MSS high voltage soft start module and static var compensator (SVC). SCR thyristors are also suitable for general-purpose line voltage rectifier applications, e.g. power supplies and standard drives.

Here are specifications and datasheets for high-power 6500V thyristors from various manufacturers, as well as replacement options.

Phase Control SCRs (Thyristors) 6500V are available with forward current rating I_TAV ranges from 280A to 6800A.

All disk-type thyristors presented on this site have a standard press-pack type ceramic housing. They are pressed with a relatively high force into heat-sinks which also serve as electrical contacts to the thyristor terminals.

SCR thyristors AS ENERGI^TM have the following features: low static and dynamic losses, high values of V_DRM/V_RRM, extensive experience of using the devices in various industries, voltage range from 100V to 9000V and current range from 100A to 15000A, high resistance to thermal and electric cycling, natural or forced air cooling.

See also articles: Phase Control Thyristors (PCT), Fast Thyristors, Fast Switching Thyristors, Thyristor Modules, Standard Rectifier Diodes, Avalanche Diodes – Series Overview.

Series of High Power Phase Control Thyristors 6500V (6.5kV) in disc case design

SCR Thyristors 6500V T series AS ENERGI^TM

High Power Phase Control Thyristors 6500V T series AS ENERGI^TM are available with current ratings from 320A to 2000A. Optimal frequency range for using SCR thyristors is up to 500 Hz.

Type	IT(AV)M (TCASE)	VDRM VRRM	ITSM	I2t	VT0	rT	tq	Tvj max	Rth(j-c)	Fm	W	Package	Dimensions ØDxØdxH	Data sheet
	A (°C)	V	kA	kA2·s	V	mΩ	µs	°C	°C/W	kN	kg		mm	PDF
Thyristors 320A
T143-320-65	346 (85)	6500	4.5	100	1.30	1.700	630	125	0.042	14-16	0.28	PT43	60x35x26
T643-320-65	320 (89)	6500	4.0	80	1.338	2.351	800	125	0.035	14-16	0.28	PT43	60x35x26
T743-320-65	320 (79)	6500	4.0	80	1.338	2.351	800	125	0.045	14-16	0.40	T.C5	56x34x35
Thyristors 500A
T253-500-65	500 (101)	6500	9.5	450	1.27	1.125	800	125	0.018	22-26	0.55	PT53	75x51x26
T353-500-65	588 (85)	6500	9.0	405	1.35	1.200	800	125	0.022	22-26	0.72	PT54	75x51x35
T653-500-65	550 (85)	6500	12	720	1.54	1.300	1000	125	0.022	22-26	0.72	PT54	75x51x35
T853-500-65	500 (98)	6500	9.5	410	1.272	1.125	800	125	0.022	22-26	0.72	PT54	75x51x35
Thyristors 800A
T653-800-65	800 (79)	6500	10	500	1.269	0.981	630	125	0.018	22-26	0.55	PT53	75x51x26
T953-800-65	685 (85)	6500	10	500	1.269	0.981	630	125	0.022	22-26	0.72	PT54	75x51x35
T163-800-65	910 (85)	6500	15	720	1.30	0.650	1000	125	0.017	30-36	0.60	PT63	87x60x26
Thyristors 1000A
T173-1000-65	1020 (85)	6500	20	2000	1.40	0.750	500	125	0.012	40-60	1.2	PT73	112x75x26
T273-1000-65	1420 (70)	6500	22	2600	1.30	0.550	1000	125	0.012	40-60	1.2	PT73	112x75x26
Thyristors 1250A
T173-1250-65	1240 (85)	6500	26	3400	1.30	0.450	1000	125	0.012	40-60	1.2	PT73	112x75x26
Thyristors 1600A
T183-1600-65	1807 (85)	6500	38	7300	1.25	0.34	1000	125	0.008	60-80	1.8	PT83	120x86x26
T383-1600-65	1740 (85)	6500	35	6200	1.20	0.39	1000	125	0.0080	60-80	2.0	PT84	120x86x35
Thyristors 2000A
T193-2000-65	2025 (85)	6500	45	10200	1.25	0.42	1000	125	0.0059	80-90	3.0	PT94	147x100x35
T293-2000-65	2377 (85)	6500	54	14700	1.20	0.29	1000	125	0.0058	80-90	3.0	PT94	147x100x35
T393-2000-65	2162 (85)	6500	45	10200	1.25	0.42	1000	125	0.0053	80-90	2.2	PT93	147x98x26

SCR Thyristors 6500V KP series AS ENERGI^TM

High Power Phase Control Thyristors 6500V KP series AS ENERGI^TM are general purpose power disc thyristors. Thyristors KP 6500V are available with current ratings from 300A to 6800A.

Series	IT(AV) (TC=70°C)	VDRM VRRM	ITSM	I2t	dv/dt	di/dt	tq	Tvj max	Rth(j-c)	Fm ±10%	W	Outline	Dimensions ØDxØdxH	Data-sheet
	A	V	kA	kA2·s	V/µs	A/µs	µs	ºC	ºC/W	kN	kg		mm	PDF
KP300-65	350	6500	4.5	101	2000	100	800	125	0.045	15	0.26	A-2	58x34x26
KP400-65	420	6500	4.5	101	2000	100	800	125	0.045	15	0.26	A-2	58x34x26
KP600-65	610	6500	12.1	732	1500	50	1200	125	0.020	22	0.47	A-5	74x47x26
KP700-65	730	6500	11.8	696	2000	100	800	125	0.020	22	0.47	A-5	74x47x26
KP800-65	850	6500	11.8	696	2000	100	800	125	0.020	22	0.47	A-5	74x47x26
KP1000-65	1010	6500	14	980	2000	200	800	125	0.020	22	0.47	A-5	74x47x26
KP1300-65	1360	6500	21.9	2400	2000	200	800	125	0.020	22	0.47	A-5	74x47x26
KP1900-65	1800	6500	32	5000	1000	200	700	125	0.0125	45	1.0	A-8	100x63x26
KP2400-65	2400	6500	40	8000	2000	100	1200	125	0.01	56	1.44	A-9	110x73x26
KP2800-65	2800	6500	45	10130	2000	200	800	125	0.01	56	1.44	A-9	110x73x26
KP3000-65	3070	6500	45	10130	2000	200	800	125	0.008	70	1.3	A-10	120x80x26
KP3400-65	3400	6500	71	25210	2000	200	1000	125	0.008	70	1.3	A-10	120x80x26
KP5700-65	5720	6500	75	34000	1000	250	500	125	0.0045	120	2.8	A-13	170x110x26
KP6800-65	6810	6500	100	58000	1000	200	800	125	0.0045	120	2.8	A-13	170x110x26

SCR Thyristors 6500V ABB Power Grids (Hitachi Energy)

SCR Thyristors 6500V 5STP series ABB Power Grids (Hitachi Energy) and its replacements are available with forward on-state current I_TAV ratings from 340A to 4300A.

In the conducting state, PCT thyristors feature very low losses, making them attractive devices to efficiently control very high currents and energies.

Type	IT(AV)M (TC=70°C)	VDRM VRRM	ITSM	VT0	rT	Tvj max	Rth(j-c)	Rth(c-h)	Fm ±10%	Package	Replacement AS ENERGITM	Data sheet
	A	V	kA	V	mΩ	ºC	K/kW	K/kW	kN			PDF
5STP 03X6500	340	6500	4.7	1.20	2.30	125	45	7.5	10	X	ATP 300-65-X-00
5STP 03D6500	390	6500	4.7	1.20	2.30	125	36	7.5	10	D	ATP 300-65-D-00
5STP 08G6500	730	6500	15.1	1.20	1.046	125	22	4.0	22	G	ATP 800-65-G-00
5STP 08F6500	850	6500	15.1	1.20	1.046	125	17	4.0	22	F	ATP 800-65-F-00
5STP 12K6500	1430	6500	31.5	1.15	0.647	125	11	2.0	50	K	ATP 1200-65-K-00
5STP 18M6500	1830	6500	47.5	1.21	0.431	125	9.0	1.5	70	M	ATP 1800-65-M-00
5STP 26N6500	2880	6500	65.0	1.12	0.29	125	5.7	1.0	90	N	ATP 2600-65-N-00
5STP 40N6500	3780	6500	75.0	1.14	0.255	135	4.8	1.0	90	N	ATP 4000-65-N-00
5STP 42U6500	4300	6500	86.0	1.17	0.181	125	4.0	0.8	135	U	ATP 4200-65-U-00

SCR Thyristors 6500V Infineon Technologies

High-performance phase control discs thyristors 6500V Infineon and replacements are available with forward on-state current I_TAV ratings from 280A to 1620A.

Type	IT(AV)M (TC=85°C)	VDRM VRRM	ITSM	I2t	VT0	rT	Tvj max	Rth(j-c)	Fm	Package	Replacement AS ENERGITM	Data sheet
	A	V	A	kA2·s	V	mΩ	ºC	K/kW	kN			PDF
T280N65TOF	280	6500	5800	115	1.35	2.800	125	43.0	5-9	T58.27K0	ATD280N65TOF
T570N65TOF	540	6500	10500	442	1.35	1.400	125	21.0	13-23	T75.26K0	ATD570N65TOF
T1060N65TOF	1053	6500	22500	2530	1.35	0.720	125	11.0	27-45	T100.26K0	ATD1060N65TOF
T1081N65TOH	1300	6500	34000	5780	1.18	0.759	125	8.6	36-52	T120.26K	ATD1081N65TOH
T1620N65TOF	1613	6500	32000	5120	1.35	0.430	125	8.1	40-65	T111.26K0	ATD1620N65TOF

SCR Thyristors 6500V Westcode (IXYS UK Westcode, Littelfuse Technology)

SCR Thyristors 6500V Littelfuse Technology (Westcode Semiconductors), also known as Medium Voltage Thyristors IXYS WESTCODE, and its replacements are available with current ratings from 450A up to 3745A.

These devices are optimized to give low conduction losses and are primarily intended for applications with line frequencies up to 400Hz.

Type	IT(AV)M (TC=55°C)	VDRM VRRM	ITSM	I2t	tq	VT0	rT	Tvj max	Rth(j-c)	Case	Dimensions ØDxØdxH	Replacement AS ENERGITM	Data sheet
	A	V	A	A2·s	µs	V	mΩ	ºC	K/W		mm		PDF
K0445LG650	450	6500	6400	200x103	700-1000	1.560	2.270	125	0.0380	W56	58x34x35	ATDK0445LG650
K0500LC650	500	6500	6400	200x103	700-1000	1.560	2.270	125	0.0320	W10	58x34x27	ATDK0500LC650
K0560QE650	575	6500	7700	296x103	1000-1100	1.460	1.750	125	0.0310	W76	60x38x35	ATDK0560QE650
K0625QA650	640	6500	7700	296x103	1000-1100	1.460	1.750	125	0.0260	W75	60x38x26	ATDK0625QA650
K0900ME650	1010	6500	12600	794x103	850-1150	1.610	0.900	125	0.0180	W78	75x50x35	ATDK0900ME650
K1000MA650	1000	6500	12500	781x103	700-1000	1.390	0.860	125	0.0200	W77	75x50x26	ATDK1000MA650
K1000ME650	1000	6500	12500	781x103	700-1000	1.390	0.860	125	0.0200	W78	75x50x35	ATDK1000ME650
K1010MA650	1130	6500	12600	794x103	850-1150	1.610	0.900	125	0.0150	W77	75x50x26	ATDK1010MA650
K1495HE650	1495	6500	21800	2.38x106	1200-1500	1.496	0.606	125	0.0125	W80	100x66x35	ATDK1495HE650
K1670HA650	1670	6500	21800	2.38x106	1200-1500	1.496	0.606	125	0.0105	W79	100x66x26	ATDK1670HA650	-
K2085TE650	2145	6500	33000	5.45x106	1450-1800	1.260	0.410	125	0.0095	W82	112x75x35	ATDK2085TE650
K2325TJ650	2380	6500	33000	5.45x106	1450-1800	1.260	0.410	125	0.0080	W81	112x75x26	ATDK2325TJ650
K2359TC650	2359	6500	27000	3.65x106	1100-1500	1.391	0.360	115	0.0085	W14	112x75x26	ATDK2359TC650
K2359TD650	2359	6500	27000	3.65x106	1100-1500	1.391	0.360	115	0.0085	W51	112x75x35	ATDK2359TD650
K2973FC650	2973	6500	35400	6.27x106	1100-1500	1.581	0.207	115	0.0065	W15	144x100x36	ATDK2973FC650
K2973FD650	2973	6500	35400	6.27x106	1100-1500	1.581	0.207	115	0.0065	W48	150x100x26	ATDK2973FD650
K3745EA650	3745	6500	35400	6.26x106	1500-1800	1.320	0.270	125	0.0050	W107	124x85x26	ATDK3745EA650

SCR Thyristors 6500V Dynex Semiconductor

The Dynex Phase Control Thyristors 6500V DCR series and its replacements are available with current ratings from 490A up to 4660A. High overload capability ensures the thyristors are suitable for fuseless applications. Operating at line frequencies where switching losses are small, the low conduction losses of Phase Control Thyristors increase system efficiency.

Type	IT(AV)M (TC=60°C)	VDRM VRRM	ITSM	dv/dt	di/dt	Rth(j-c)	Fm	Case	Dimensions ØDxØdxH	Replacement AS ENERGITM	Data sheet
	A	V	kA	V/µs	A/µs	ºC/kW	kN		mm		PDF
Thyristors up to 6500V
DCR490J65	490	6500	6.6	1500	200	38	10 - 13	J	57x33.95x35.15	ATCR490J65
DCR590G65	595	6500	6.6	1500	200	27	10 - 13	G	58.5x34x27.1	ATCR590G65
DCR820N65	820	6500	12	1500	200	22	20 - 25	N	73x47x35.15	ATCR820N65
DCR890F65	894	6500	12	1500	200	18	20 - 25	F	73x47x27.1	ATCR890F65
DCR1570L65	1568	6500	22	1500	300	12	33 - 41	L	98.9x62.85x35.2	ATCR1570L65
DCR1650C65	1650	6500	22	1500	300	10	33 - 41	C	98.9x62.9x27.1	ATCR1650C65
DCR2220Y65	2220	6500	30	1500	300	8	48 - 59	Y	112.5x73x35.73	ATCR2220Y65
DCR2290V65	2290	6500	30	1500	500	7	48 - 59	V	110x73x27.95	ATCR2290V65
DCR2880B65	2840	6500	38.9	1500	300	7	68 - 84	B	120x84.6x35.3	ATCR2880B65
DCR2950W65	2940	6500	38.9	1500	300	6	68 - 84	W	120x84.6x28	ATCR2950W65
DCR3220A65	3220	6500	43	2000	500	6	74 - 91	A	148x100x35.9	ATCR3220A65
DCR3480M65	3480	6500	43	2000	500	5	74 - 91	M	148x100x26.5	ATCR3480M65
Thyristors up to 6500V - Low Conduction Loss
DCR3360A65	3360	6500	44.7	2000	500	6	74 - 91	A	148x100x35.9	ATCR3360A65
DCR3620M65	3620	6500	44.7	2000	500	5	74 - 91	M	148x100x26.5	ATCR3620M65
DCR4660H65	4660	6500	69.1	2000	500	4	120 - 155	H	170x115x35.7	ATCR4660H65
Thyristors up to 6500V - Low Switching Loss
DCR3120A65	3120	6500	41.5	2000	500	6	74 - 91	A	148x100x35.9	ATCR3120A65
DCR3370M65	3370	6500	41.5	2000	500	5	74 - 91	M	148x100x26.5	ATCR3370M65
DCR4420H65	4420	6500	64.6	2000	500	4	120 - 155	H	170x115x35.7	ATCR4420H65

Air-cooled and Water-cooled heat-sinks for disc type thyristors

The operation of semiconductor devices at high currents and high reverse voltages is accompanied by high power in the p-n junction of the silicon chip.

Air and water heat sinks are used for cooling power SCR thyristors.

The heat sink is characterized by the value of power dissipation and the area of the cooling surface and is selected on the basis of the required heat dissipation at the operating power of the thyristor.

In disk-type thyristors, the necessary compression of the press contacts is provided only if they are assembled with heatsinks.

To keep electrical losses to a minimum and heat dissipation to a maximum, the necessary clamping force Fm must be provided during assembly.

Range of values of axial force on thyristor Fm, i.e. thyristor compression force, is from 10 to 100 kN depending on package diameter (housing type) and is specified in datasheet.

Heatsinks are used for disc (tablet type) semiconductors with сontact surface diameter from Ø19 mm to Ø100 mm.

See for more information about heatsinks for disc type SCR thyristors:
"Air-cooled heatsinks O series", "Air heatsink SF series", "Water heatsink SS series".

Installation recommendations for power disc type thyristors

The reliability of heat transfer and electrical contact between the mating surfaces of the thyristor and the cooler over the entire temperature range is ensured by appropriate torque (clamping force).

Before assembly you should perform visual inspection (1) contact surfaces for mechanical damages and wipe (2), soaked with alcohol (toluene, gasoline, acetone).

After inspection, fix the current contacts (leads), install a pin to fix the alignment of the structure.

To improve the parameters of heat transfer it is recommended to lubricate (3) a thin layer of silicone thermal conductive paste before the assembly, which is not a mandatory condition for installation.

Install the thyristor (3), the second part of the cooler, the fiberglass insulator and the thrust washer.

To thread the traverse (4) and evenly tighten the nuts. Make sure no misalignment and evenness of the contact surfaces.

When the parts are sufficiently clamped but moveable, we recommend placing the cooler on a flat surface and checking the tolerance for parallelism of the overall adjacent plane of the surfaces (5).

Clamp each nut in turn (about a quarter turn) to the stop (6). The amount of deflection of the traverse determines whether the achieved clamping force corresponds to the required one.

After installation, the fasteners (nuts and washers) must be additionally secured against corrosion.

Tips and recommendations for power thyristors:

The power thyristors should not be operated for long periods of time at their limit load for all parameters. In this case, the safety factor is determined by the required degree of reliability of the device.

Replace a failed power thyristor with a thyristor that matches the parameters of the one being replaced.

Supercooling must be provided when operating in an environment with an elevated ambient temperature.

Periodic cleaning of power thyristors and coolers to remove dust and contaminants is recommended to ensure proper heat dissipation.

Inductive current dividers (often twisted toroidal wire) should be used to equalize currents between power thyristors connected in parallel. The most popular connection methods are closed circuit, common coil circuit, or power thyristor. The efficiency of current dividers in this case is determined by the cross section of the magnetic wire.

Prevention of voltage unbalance when power thyristors are connected in series is achieved by using shunt resistors connected in parallel with each thyristor. Voltage equalization in transient conditions is provided by connecting capacitors in parallel to each thyristor.

It is strictly forbidden to touch power thyristors under high voltage during operation.