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Part Number	Manufacturer	Description	Package	Stock	Package	Series	Voltage - DC Spark Over (Nom)	Impulse Discharge Current (8/20µs)	Tolerance	Number of Poles	Fail Short	Mounting Type	Package / Case
SL1021B090RG	Littelfuse Inc.	GDT 90V 20KA T/H FAIL SHORT	Package: Axial Cylinder, 3 Lead (Radial Bend)	Stock4,050	Axial Cylinder, 3 Lead (Radial Bend)	SL1021B	90V	20000A (20kA)	-	3	Yes	Through Hole	Axial Cylinder, 3 Lead (Radial Bend)
SL1021B145RG	Littelfuse Inc.	GDT 145V 20KA T/H FAIL SHORT	Package: Axial Cylinder, 3 Lead (Radial Bend)	Stock7,830	Axial Cylinder, 3 Lead (Radial Bend)	SL1021B	145V	20000A (20kA)	-	3	Yes	Through Hole	Axial Cylinder, 3 Lead (Radial Bend)
SL1021A500RG	Littelfuse Inc.	GDT 500V 10KA T/H FAIL SHORT	Package: Axial Cylinder, 3 Lead (Radial Bend)	Stock5,310	Axial Cylinder, 3 Lead (Radial Bend)	SL1021A	500V	10000A (10kA)	-	3	Yes	Through Hole	Axial Cylinder, 3 Lead (Radial Bend)
SL1021A200RG	Littelfuse Inc.	GDT 200V 10KA T/H FAIL SHORT	Package: Axial Cylinder, 3 Lead (Radial Bend)	Stock7,254	Axial Cylinder, 3 Lead (Radial Bend)	SL1021A	200V	10000A (10kA)	-	3	Yes	Through Hole	Axial Cylinder, 3 Lead (Radial Bend)
SL1021A230RG	Littelfuse Inc.	GDT 230V 10KA T/H FAIL SHORT	Package: Axial Cylinder, 3 Lead (Radial Bend)	Stock4,842	Axial Cylinder, 3 Lead (Radial Bend)	SL1021A	230V	10000A (10kA)	-	3	Yes	Through Hole	Axial Cylinder, 3 Lead (Radial Bend)
SL1021A250RG	Littelfuse Inc.	GDT 250V 10KA T/H FAIL SHORT	Package: Axial Cylinder, 3 Lead (Radial Bend)	Stock8,406	Axial Cylinder, 3 Lead (Radial Bend)	SL1021A	250V	10000A (10kA)	-	3	Yes	Through Hole	Axial Cylinder, 3 Lead (Radial Bend)
SL1021A600RG	Littelfuse Inc.	GDT 600V 10KA T/H FAIL SHORT	Package: Axial Cylinder, 3 Lead (Radial Bend)	Stock2,610	Axial Cylinder, 3 Lead (Radial Bend)	SL1021A	600V	10000A (10kA)	-	3	Yes	Through Hole	Axial Cylinder, 3 Lead (Radial Bend)
SL1021A300RG	Littelfuse Inc.	GDT 300V 10KA T/H FAIL SHORT	Package: Axial Cylinder, 3 Lead (Radial Bend)	Stock5,490	Axial Cylinder, 3 Lead (Radial Bend)	SL1021A	300V	10000A (10kA)	-	3	Yes	Through Hole	Axial Cylinder, 3 Lead (Radial Bend)
SL1021A260RG	Littelfuse Inc.	GDT 260V 10KA T/H FAIL SHORT	Package: Axial Cylinder, 3 Lead (Radial Bend)	Stock5,940	Axial Cylinder, 3 Lead (Radial Bend)	SL1021A	260V	10000A (10kA)	-	3	Yes	Through Hole	Axial Cylinder, 3 Lead (Radial Bend)
SL1021A400RG	Littelfuse Inc.	GDT 400V 10KA T/H FAIL SHORT	Package: Axial Cylinder, 3 Lead (Radial Bend)	Stock2,070	Axial Cylinder, 3 Lead (Radial Bend)	SL1021A	400V	10000A (10kA)	-	3	Yes	Through Hole	Axial Cylinder, 3 Lead (Radial Bend)
SL1021A420RG	Littelfuse Inc.	GDT 420V 10KA T/H FAIL SHORT	Package: Axial Cylinder, 3 Lead (Radial Bend)	Stock4,284	Axial Cylinder, 3 Lead (Radial Bend)	SL1021A	420V	10000A (10kA)	-	3	Yes	Through Hole	Axial Cylinder, 3 Lead (Radial Bend)
SL1021A450RG	Littelfuse Inc.	GDT 450V 10KA T/H FAIL SHORT	Package: Axial Cylinder, 3 Lead (Radial Bend)	Stock3,708	Axial Cylinder, 3 Lead (Radial Bend)	SL1021A	450V	10000A (10kA)	-	3	Yes	Through Hole	Axial Cylinder, 3 Lead (Radial Bend)
GTCT37-900M-P10	Littelfuse Inc.	GDT 90V 20% 10KA THROUGH HOLE	Package: Axial Cylinder, 3 Lead (T-Shape)	Stock6,948	Axial Cylinder, 3 Lead (T-Shape)	GT	90V	10000A (10kA)	±20%	3	No	Through Hole	Axial Cylinder, 3 Lead (T-Shape)
GTCT37-551M-P10	Littelfuse Inc.	GDT 550V 20% 10KA THROUGH HOLE	Package: Axial Cylinder, 3 Lead (T-Shape)	Stock8,604	Axial Cylinder, 3 Lead (T-Shape)	GT	550V	10000A (10kA)	±20%	3	No	Through Hole	Axial Cylinder, 3 Lead (T-Shape)
GTCT37-401M-P10	Littelfuse Inc.	GDT 400V 20% 10KA THROUGH HOLE	Package: Axial Cylinder, 3 Lead (T-Shape)	Stock7,488	Axial Cylinder, 3 Lead (T-Shape)	GT	400V	10000A (10kA)	±20%	3	No	Through Hole	Axial Cylinder, 3 Lead (T-Shape)
GTCT37-351M-P10	Littelfuse Inc.	GDT 350V 20% 10KA THROUGH HOLE	Package: Axial Cylinder, 3 Lead (T-Shape)	Stock5,058	Axial Cylinder, 3 Lead (T-Shape)	GT	350V	10000A (10kA)	±20%	3	No	Through Hole	Axial Cylinder, 3 Lead (T-Shape)
GTCT37-301M-P10	Littelfuse Inc.	GDT 300V 20% 10KA THROUGH HOLE	Package: Axial Cylinder, 3 Lead (T-Shape)	Stock6,948	Axial Cylinder, 3 Lead (T-Shape)	GT	300V	10000A (10kA)	±20%	3	No	Through Hole	Axial Cylinder, 3 Lead (T-Shape)
GTCT37-261M-P10	Littelfuse Inc.	GDT 260V 20% 10KA THROUGH HOLE	Package: Axial Cylinder, 3 Lead (T-Shape)	Stock4,014	Axial Cylinder, 3 Lead (T-Shape)	GT	260V	10000A (10kA)	±20%	3	No	Through Hole	Axial Cylinder, 3 Lead (T-Shape)
GTCT37-251M-P10	Littelfuse Inc.	GDT 250V 20% 10KA THROUGH HOLE	Package: Axial Cylinder, 3 Lead (T-Shape)	Stock7,344	Axial Cylinder, 3 Lead (T-Shape)	GT	250V	10000A (10kA)	±20%	3	No	Through Hole	Axial Cylinder, 3 Lead (T-Shape)
GTCT37-231M-P10	Littelfuse Inc.	GDT 230V 20% 10KA THROUGH HOLE	Package: Axial Cylinder, 3 Lead (T-Shape)	Stock4,554	Axial Cylinder, 3 Lead (T-Shape)	GT	230V	10000A (10kA)	±20%	3	No	Through Hole	Axial Cylinder, 3 Lead (T-Shape)
GTCT37-201N-P10	Littelfuse Inc.	GDT 200V 25% 10KA THROUGH HOLE	Package: Axial Cylinder, 3 Lead (T-Shape)	Stock3,546	Axial Cylinder, 3 Lead (T-Shape)	GT	200V	10000A (10kA)	±25%	3	No	Through Hole	Axial Cylinder, 3 Lead (T-Shape)
GTCT37-151M-P10	Littelfuse Inc.	GDT 150V 20% 10KA THROUGH HOLE	Package: Axial Cylinder, 3 Lead (T-Shape)	Stock3,528	Axial Cylinder, 3 Lead (T-Shape)	GT	150V	10000A (10kA)	±20%	3	No	Through Hole	Axial Cylinder, 3 Lead (T-Shape)
GTCR38-900M-Q10	Littelfuse Inc.	GDT 90V 20% 10KA THROUGH HOLE	Package: Radial Cylinder, 3 Lead	Stock7,344	Radial Cylinder, 3 Lead	GT	90V	10000A (10kA)	±20%	3	No	Through Hole	Radial Cylinder, 3 Lead
GTCR38-501M-Q10	Littelfuse Inc.	GDT 500V 20% 10KA THROUGH HOLE	Package: Radial Cylinder, 3 Lead	Stock5,796	Radial Cylinder, 3 Lead	GT	500V	10000A (10kA)	±20%	3	No	Through Hole	Radial Cylinder, 3 Lead
GTCR38-421M-Q10	Littelfuse Inc.	GDT 420V 20% 10KA THROUGH HOLE	Package: Radial Cylinder, 3 Lead	Stock6,192	Radial Cylinder, 3 Lead	GT	420V	10000A (10kA)	±20%	3	No	Through Hole	Radial Cylinder, 3 Lead
GTCR38-351M-Q10	Littelfuse Inc.	GDT 350V 20% 10KA THROUGH HOLE	Package: Radial Cylinder, 3 Lead	Stock6,192	Radial Cylinder, 3 Lead	GT	350V	10000A (10kA)	±20%	3	No	Through Hole	Radial Cylinder, 3 Lead
GTCR38-351M-P20	Littelfuse Inc.	GDT 350V 20% 20KA THROUGH HOLE	Package: Radial Cylinder, 3 Lead	Stock7,362	Radial Cylinder, 3 Lead	GT	350V	20000A (20kA)	±20%	3	No	Through Hole	Radial Cylinder, 3 Lead
GTCR38-251M-Q10	Littelfuse Inc.	GDT 250V 20% 10KA THROUGH HOLE	Package: Radial Cylinder, 3 Lead	Stock8,640	Radial Cylinder, 3 Lead	GT	250V	10000A (10kA)	±20%	3	No	Through Hole	Radial Cylinder, 3 Lead
GTCR38-231M-Q10	Littelfuse Inc.	GDT 230V 20% 10KA THROUGH HOLE	Package: Radial Cylinder, 3 Lead	Stock8,892	Radial Cylinder, 3 Lead	GT	230V	10000A (10kA)	±20%	3	No	Through Hole	Radial Cylinder, 3 Lead
GTCR38-151M-Q10	Littelfuse Inc.	GDT 150V 20% 10KA THROUGH HOLE	Package: Radial Cylinder, 3 Lead	Stock4,248	Radial Cylinder, 3 Lead	GT	150V	10000A (10kA)	±20%	3	No	Through Hole	Radial Cylinder, 3 Lead

SL1021B090RG

Littelfuse Inc.

GDT 90V 20KA T/H FAIL SHORT

Package: Axial Cylinder, 3 Lead (Radial Bend)

Stock4,050

Axial Cylinder, 3 Lead (Radial Bend)

SL1021B

90V

20000A (20kA)

-

3

Yes

Through Hole

Axial Cylinder, 3 Lead (Radial Bend)

SL1021B145RG

Littelfuse Inc.

GDT 145V 20KA T/H FAIL SHORT

Package: Axial Cylinder, 3 Lead (Radial Bend)

Stock7,830

Axial Cylinder, 3 Lead (Radial Bend)

SL1021B

145V

20000A (20kA)

-

3

Yes

Through Hole

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A500RG

Littelfuse Inc.

GDT 500V 10KA T/H FAIL SHORT

Package: Axial Cylinder, 3 Lead (Radial Bend)

Stock5,310

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A

500V

10000A (10kA)

-

3

Yes

Through Hole

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A200RG

Littelfuse Inc.

GDT 200V 10KA T/H FAIL SHORT

Package: Axial Cylinder, 3 Lead (Radial Bend)

Stock7,254

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A

200V

10000A (10kA)

-

3

Yes

Through Hole

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A230RG

Littelfuse Inc.

GDT 230V 10KA T/H FAIL SHORT

Package: Axial Cylinder, 3 Lead (Radial Bend)

Stock4,842

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A

230V

10000A (10kA)

-

3

Yes

Through Hole

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A250RG

Littelfuse Inc.

GDT 250V 10KA T/H FAIL SHORT

Package: Axial Cylinder, 3 Lead (Radial Bend)

Stock8,406

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A

250V

10000A (10kA)

-

3

Yes

Through Hole

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A600RG

Littelfuse Inc.

GDT 600V 10KA T/H FAIL SHORT

Package: Axial Cylinder, 3 Lead (Radial Bend)

Stock2,610

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A

600V

10000A (10kA)

-

3

Yes

Through Hole

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A300RG

Littelfuse Inc.

GDT 300V 10KA T/H FAIL SHORT

Package: Axial Cylinder, 3 Lead (Radial Bend)

Stock5,490

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A

300V

10000A (10kA)

-

3

Yes

Through Hole

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A260RG

Littelfuse Inc.

GDT 260V 10KA T/H FAIL SHORT

Package: Axial Cylinder, 3 Lead (Radial Bend)

Stock5,940

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A

260V

10000A (10kA)

-

3

Yes

Through Hole

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A400RG

Littelfuse Inc.

GDT 400V 10KA T/H FAIL SHORT

Package: Axial Cylinder, 3 Lead (Radial Bend)

Stock2,070

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A

400V

10000A (10kA)

-

3

Yes

Through Hole

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A420RG

Littelfuse Inc.

GDT 420V 10KA T/H FAIL SHORT

Package: Axial Cylinder, 3 Lead (Radial Bend)

Stock4,284

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A

420V

10000A (10kA)

-

3

Yes

Through Hole

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A450RG

Littelfuse Inc.

GDT 450V 10KA T/H FAIL SHORT

Package: Axial Cylinder, 3 Lead (Radial Bend)

Stock3,708

Axial Cylinder, 3 Lead (Radial Bend)

SL1021A

450V

10000A (10kA)

-

3

Yes

Through Hole

Axial Cylinder, 3 Lead (Radial Bend)

GTCT37-900M-P10

Littelfuse Inc.

GDT 90V 20% 10KA THROUGH HOLE

Package: Axial Cylinder, 3 Lead (T-Shape)

Stock6,948

Axial Cylinder, 3 Lead (T-Shape)

GT

90V

10000A (10kA)

±20%

3

No

Through Hole

Axial Cylinder, 3 Lead (T-Shape)

GTCT37-551M-P10

Littelfuse Inc.

GDT 550V 20% 10KA THROUGH HOLE

Package: Axial Cylinder, 3 Lead (T-Shape)

Stock8,604

Axial Cylinder, 3 Lead (T-Shape)

GT

550V

10000A (10kA)

±20%

3

No

Through Hole

Axial Cylinder, 3 Lead (T-Shape)

GTCT37-401M-P10

Littelfuse Inc.

GDT 400V 20% 10KA THROUGH HOLE

Package: Axial Cylinder, 3 Lead (T-Shape)

Stock7,488

Axial Cylinder, 3 Lead (T-Shape)

GT

400V

10000A (10kA)

±20%

3

No

Through Hole

Axial Cylinder, 3 Lead (T-Shape)

GTCT37-351M-P10

Littelfuse Inc.

GDT 350V 20% 10KA THROUGH HOLE

Package: Axial Cylinder, 3 Lead (T-Shape)

Stock5,058

Axial Cylinder, 3 Lead (T-Shape)

GT

350V

10000A (10kA)

±20%

3

No

Through Hole

Axial Cylinder, 3 Lead (T-Shape)

GTCT37-301M-P10

Littelfuse Inc.

GDT 300V 20% 10KA THROUGH HOLE

Package: Axial Cylinder, 3 Lead (T-Shape)

Stock6,948

Axial Cylinder, 3 Lead (T-Shape)

GT

300V

10000A (10kA)

±20%

3

No

Through Hole

Axial Cylinder, 3 Lead (T-Shape)

GTCT37-261M-P10

Littelfuse Inc.

GDT 260V 20% 10KA THROUGH HOLE

Package: Axial Cylinder, 3 Lead (T-Shape)

Stock4,014

Axial Cylinder, 3 Lead (T-Shape)

GT

260V

10000A (10kA)

±20%

3

No

Through Hole

Axial Cylinder, 3 Lead (T-Shape)

GTCT37-251M-P10

Littelfuse Inc.

GDT 250V 20% 10KA THROUGH HOLE

Package: Axial Cylinder, 3 Lead (T-Shape)

Stock7,344

Axial Cylinder, 3 Lead (T-Shape)

GT

250V

10000A (10kA)

±20%

3

No

Through Hole

Axial Cylinder, 3 Lead (T-Shape)

GTCT37-231M-P10

Littelfuse Inc.

GDT 230V 20% 10KA THROUGH HOLE

Package: Axial Cylinder, 3 Lead (T-Shape)

Stock4,554

Axial Cylinder, 3 Lead (T-Shape)

GT

230V

10000A (10kA)

±20%

3

No

Through Hole

Axial Cylinder, 3 Lead (T-Shape)

GTCT37-201N-P10

Littelfuse Inc.

GDT 200V 25% 10KA THROUGH HOLE

Package: Axial Cylinder, 3 Lead (T-Shape)

Stock3,546

Axial Cylinder, 3 Lead (T-Shape)

GT

200V

10000A (10kA)

±25%

3

No

Through Hole

Axial Cylinder, 3 Lead (T-Shape)

GTCT37-151M-P10

Littelfuse Inc.

GDT 150V 20% 10KA THROUGH HOLE

Package: Axial Cylinder, 3 Lead (T-Shape)

Stock3,528

Axial Cylinder, 3 Lead (T-Shape)

GT

150V

10000A (10kA)

±20%

3

No

Through Hole

Axial Cylinder, 3 Lead (T-Shape)

GTCR38-900M-Q10

Littelfuse Inc.

GDT 90V 20% 10KA THROUGH HOLE

Package: Radial Cylinder, 3 Lead

Stock7,344

Radial Cylinder, 3 Lead

GT

90V

10000A (10kA)

±20%

3

No

Through Hole

Radial Cylinder, 3 Lead

GTCR38-501M-Q10

Littelfuse Inc.

GDT 500V 20% 10KA THROUGH HOLE

Package: Radial Cylinder, 3 Lead

Stock5,796

Radial Cylinder, 3 Lead

GT

500V

10000A (10kA)

±20%

3

No

Through Hole

Radial Cylinder, 3 Lead

GTCR38-421M-Q10

Littelfuse Inc.

GDT 420V 20% 10KA THROUGH HOLE

Package: Radial Cylinder, 3 Lead

Stock6,192

Radial Cylinder, 3 Lead

GT

420V

10000A (10kA)

±20%

3

No

Through Hole

Radial Cylinder, 3 Lead

GTCR38-351M-Q10

Littelfuse Inc.

GDT 350V 20% 10KA THROUGH HOLE

Package: Radial Cylinder, 3 Lead

Stock6,192

Radial Cylinder, 3 Lead

GT

350V

10000A (10kA)

±20%

3

No

Through Hole

Radial Cylinder, 3 Lead

GTCR38-351M-P20

Littelfuse Inc.

GDT 350V 20% 20KA THROUGH HOLE

Package: Radial Cylinder, 3 Lead

Stock7,362

Radial Cylinder, 3 Lead

GT

350V

20000A (20kA)

±20%

3

No

Through Hole

Radial Cylinder, 3 Lead

GTCR38-251M-Q10

Littelfuse Inc.

GDT 250V 20% 10KA THROUGH HOLE

Package: Radial Cylinder, 3 Lead

Stock8,640

Radial Cylinder, 3 Lead

GT

250V

10000A (10kA)

±20%

3

No

Through Hole

Radial Cylinder, 3 Lead

GTCR38-231M-Q10

Littelfuse Inc.

GDT 230V 20% 10KA THROUGH HOLE

Package: Radial Cylinder, 3 Lead

Stock8,892

Radial Cylinder, 3 Lead

GT

230V

10000A (10kA)

±20%

3

No

Through Hole

Radial Cylinder, 3 Lead

GTCR38-151M-Q10

Littelfuse Inc.

GDT 150V 20% 10KA THROUGH HOLE

Package: Radial Cylinder, 3 Lead

Stock4,248

Radial Cylinder, 3 Lead

GT

150V

10000A (10kA)

±20%

3

No

Through Hole

Radial Cylinder, 3 Lead

Gas Discharge Tube Arresters (GDT)