Page 315 - Connecteurs de fond de panier - Spécialisé | Connecteurs, interconnexions | Heisener Electronics
Contactez nous
SalesDept@heisener.com 86-755-83210559-843
Language Translation

* Please refer to the English Version as our Official Version.

Connecteurs de fond de panier - Spécialisé

Dossiers 26 198
Page  315/936
Image
Référence
Fabricant
Description
paquet
Stock
Quantité
Connector Type
Connector Style
Number of Positions
Number of Positions Loaded
Pitch
Number of Rows
Number of Columns
Mounting Type
Termination
Contact Layout, Typical
Features
Contact Finish
Contact Finish Thickness
Color
50576-5320E
Amphenol FCI

CONN HPC

  • Connector Usage: -
  • Connector Type: Receptacle, Female Sockets
  • Connector Style: High Density (HDC, HDI, HPC)
  • Number of Positions: 320
  • Number of Positions Loaded: All
  • Pitch: 0.100" (2.54mm)
  • Number of Rows: 4
  • Number of Columns: 80
  • Mounting Type: Through Hole, Right Angle
  • Termination: Solder
  • Contact Layout, Typical: -
  • Features: Mating Guide
  • Contact Finish: Gold or Gold, GXT?
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Black
paquet: -
Stock7 848
Receptacle, Female Sockets
High Density (HDC, HDI, HPC)
320
All
0.100" (2.54mm)
4
80
Through Hole, Right Angle
Solder
-
Mating Guide
Gold or Gold, GXT?
30µin (0.76µm)
Black
51820-10800000AB
Amphenol FCI

PWRBLADE R/A LF REC

  • Connector Usage: -
  • Connector Type: Receptacle, Female Blade Sockets
  • Connector Style: Blade Power
  • Number of Positions: 8
  • Number of Positions Loaded: All
  • Pitch: 0.300" (7.62mm)
  • Number of Rows: 1
  • Number of Columns: -
  • Mounting Type: Board Edge, Through Hole, Right Angle
  • Termination: Solder
  • Contact Layout, Typical: 8 Power
  • Features: Guide Pin
  • Contact Finish: Gold
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Black
paquet: -
Stock4 518
Receptacle, Female Blade Sockets
Blade Power
8
All
0.300" (7.62mm)
1
-
Board Edge, Through Hole, Right Angle
Solder
8 Power
Guide Pin
Gold
30µin (0.76µm)
Black
10120124-S0E-60DLF
Amphenol FCI

3P 8C 2W VERT XCHD RIGHT WK

  • Connector Usage: Backplane
  • Connector Type: Header, Male Pins and Blades
  • Connector Style: XCede?, Guide Right
  • Number of Positions: -
  • Number of Positions Loaded: All
  • Pitch: -
  • Number of Rows: -
  • Number of Columns: 8
  • Mounting Type: Through Hole
  • Termination: Press-Fit
  • Contact Layout, Typical: 24 Signal Pairs, 28 Ground
  • Features: -
  • Contact Finish: Gold or Gold, GXT?
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Black
paquet: -
Stock7 632
Header, Male Pins and Blades
XCede?, Guide Right
-
All
-
-
8
Through Hole
Press-Fit
24 Signal Pairs, 28 Ground
-
Gold or Gold, GXT?
30µin (0.76µm)
Black
10113949-A0E-50B
Amphenol FCI

XCEDE LEFT 2PVH 8COL WK

  • Connector Usage: Backplane
  • Connector Type: Header, Male Pins and Blades
  • Connector Style: XCede?, Guide Left
  • Number of Positions: -
  • Number of Positions Loaded: All
  • Pitch: -
  • Number of Rows: -
  • Number of Columns: 8
  • Mounting Type: Through Hole
  • Termination: Press-Fit
  • Contact Layout, Typical: 24 Differential Pairs
  • Features: Key
  • Contact Finish: Gold or Gold, GXT?
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Gray
paquet: -
Stock7 686
Header, Male Pins and Blades
XCede?, Guide Left
-
All
-
-
8
Through Hole
Press-Fit
24 Differential Pairs
Key
Gold or Gold, GXT?
30µin (0.76µm)
Gray
10113947-F0C-50DLF
Amphenol FCI

XCEDE LEFT 2PVH 6COL WK

  • Connector Usage: Backplane
  • Connector Type: Header, Male Pins and Blades
  • Connector Style: XCede?, Guide Left
  • Number of Positions: -
  • Number of Positions Loaded: All
  • Pitch: -
  • Number of Rows: -
  • Number of Columns: 6
  • Mounting Type: Through Hole
  • Termination: Press-Fit
  • Contact Layout, Typical: 18 Differential Pairs
  • Features: Key
  • Contact Finish: Gold or Gold, GXT?
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Gray
paquet: -
Stock2 070
Header, Male Pins and Blades
XCede?, Guide Left
-
All
-
-
6
Through Hole
Press-Fit
18 Differential Pairs
Key
Gold or Gold, GXT?
30µin (0.76µm)
Gray
10104999-M0E-50DLF
Amphenol FCI

XCEDE 3W RGHT 6PVH 8COL

  • Connector Usage: Backplane
  • Connector Type: Header, Male Pins and Blades
  • Connector Style: XCede?, Right Wall
  • Number of Positions: -
  • Number of Positions Loaded: All
  • Pitch: -
  • Number of Rows: -
  • Number of Columns: 8
  • Mounting Type: Through Hole
  • Termination: Press-Fit
  • Contact Layout, Typical: 72 Differential Pairs
  • Features: -
  • Contact Finish: Gold or Gold, GXT?
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Gray
paquet: -
Stock5 274
Header, Male Pins and Blades
XCede?, Right Wall
-
All
-
-
8
Through Hole
Press-Fit
72 Differential Pairs
-
Gold or Gold, GXT?
30µin (0.76µm)
Gray
10104999-00E-80B
Amphenol FCI

XCEDE 2W 6PVH 8COL

  • Connector Usage: Backplane
  • Connector Type: Header, Male Pins and Blades
  • Connector Style: XCede?
  • Number of Positions: -
  • Number of Positions Loaded: All
  • Pitch: -
  • Number of Rows: -
  • Number of Columns: 8
  • Mounting Type: Through Hole
  • Termination: Press-Fit
  • Contact Layout, Typical: 72 Differential Pairs
  • Features: -
  • Contact Finish: Gold or Gold, GXT?
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Gray
paquet: -
Stock2 592
Header, Male Pins and Blades
XCede?
-
All
-
-
8
Through Hole
Press-Fit
72 Differential Pairs
-
Gold or Gold, GXT?
30µin (0.76µm)
Gray
0760405108
Molex, LLC

CONN RCPT 240POS 8COL RT ANG

  • Connector Usage: -
  • Connector Type: Receptacle, Female Sockets
  • Connector Style: I-Trac
  • Number of Positions: 240
  • Number of Positions Loaded: All
  • Pitch: -
  • Number of Rows: 15
  • Number of Columns: 8
  • Mounting Type: Through Hole
  • Termination: Press-Fit
  • Contact Layout, Typical: -
  • Features: -
  • Contact Finish: Gold
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Black
paquet: -
Stock7 974
Receptacle, Female Sockets
I-Trac
240
All
-
15
8
Through Hole
Press-Fit
-
-
Gold
30µin (0.76µm)
Black
0760404008
Molex, LLC

CONN RCPT 240POS 8COL RT ANG

  • Connector Usage: -
  • Connector Type: Receptacle, Female Sockets
  • Connector Style: I-Trac
  • Number of Positions: 240
  • Number of Positions Loaded: All
  • Pitch: -
  • Number of Rows: 15
  • Number of Columns: 8
  • Mounting Type: Through Hole
  • Termination: Press-Fit
  • Contact Layout, Typical: -
  • Features: -
  • Contact Finish: Gold
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Black
paquet: -
Stock2 286
Receptacle, Female Sockets
I-Trac
240
All
-
15
8
Through Hole
Press-Fit
-
-
Gold
30µin (0.76µm)
Black
85922-101
Amphenol FCI

MTR 4R SIG RECEP STR STB

  • Connector Usage: -
  • Connector Type: Receptacle, Female Sockets
  • Connector Style: -
  • Number of Positions: 24
  • Number of Positions Loaded: All
  • Pitch: 0.079" (2.00mm)
  • Number of Rows: 4
  • Number of Columns: -
  • Mounting Type: Through Hole
  • Termination: Solder
  • Contact Layout, Typical: -
  • Features: Board Guide, Spacer
  • Contact Finish: Gold
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: -
paquet: -
Stock8 694
Receptacle, Female Sockets
-
24
All
0.079" (2.00mm)
4
-
Through Hole
Solder
-
Board Guide, Spacer
Gold
30µin (0.76µm)
-
50351-5096E
Amphenol FCI

4 ROW R/A RECEPT CARD

  • Connector Usage: -
  • Connector Type: Receptacle, Female Sockets
  • Connector Style: High Density (HDC, HDI, HPC)
  • Number of Positions: 96
  • Number of Positions Loaded: All
  • Pitch: 0.100" (2.54mm)
  • Number of Rows: 4
  • Number of Columns: 24
  • Mounting Type: Through Hole, Right Angle
  • Termination: Solder
  • Contact Layout, Typical: -
  • Features: -
  • Contact Finish: Gold or Gold, GXT?
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Black
paquet: -
Stock4 572
Receptacle, Female Sockets
High Density (HDC, HDI, HPC)
96
All
0.100" (2.54mm)
4
24
Through Hole, Right Angle
Solder
-
-
Gold or Gold, GXT?
30µin (0.76µm)
Black
5534008-8
TE Connectivity AMP Connectors

CONN TB RCPT 128PS 4ROW R/A GOLD

  • Connector Usage: -
  • Connector Type: Receptacle, Female Sockets
  • Connector Style: High Density (HDC, HDI, HPC)
  • Number of Positions: 128
  • Number of Positions Loaded: All
  • Pitch: 0.100" (2.54mm)
  • Number of Rows: 4
  • Number of Columns: -
  • Mounting Type: Through Hole, Right Angle
  • Termination: Solder
  • Contact Layout, Typical: -
  • Features: Mating Guide
  • Contact Finish: Gold
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Black
paquet: -
Stock5 256
Receptacle, Female Sockets
High Density (HDC, HDI, HPC)
128
All
0.100" (2.54mm)
4
-
Through Hole, Right Angle
Solder
-
Mating Guide
Gold
30µin (0.76µm)
Black
0752352267
Molex, LLC

CONN HEADER BACKPLAN 200POS GOLD

  • Connector Usage: -
  • Connector Type: Header, Male Pins
  • Connector Style: GbX?, Guide Left
  • Number of Positions: 200
  • Number of Positions Loaded: All
  • Pitch: 0.073" (1.85mm)
  • Number of Rows: 8
  • Number of Columns: 25
  • Mounting Type: Through Hole
  • Termination: Press-Fit
  • Contact Layout, Typical: 100 Differential Pairs
  • Features: Shielded
  • Contact Finish: Gold
  • Contact Finish Thickness: -
  • Color: Gray
paquet: -
Stock4 698
Header, Male Pins
GbX?, Guide Left
200
All
0.073" (1.85mm)
8
25
Through Hole
Press-Fit
100 Differential Pairs
Shielded
Gold
-
Gray
MMB25-0141K1
Vishay Dale

CONN RACK/PANEL 14POS 5A

  • Connector Usage: -
  • Connector Type: Plug, Male Pins
  • Connector Style: Rack and Panel
  • Number of Positions: 14
  • Number of Positions Loaded: All
  • Pitch: -
  • Number of Rows: 3
  • Number of Columns: -
  • Mounting Type: Panel Mount, Through Hole
  • Termination: Solder
  • Contact Layout, Typical: -
  • Features: Screwlocks
  • Contact Finish: Gold
  • Contact Finish Thickness: 50µin (1.27µm)
  • Color: Green
paquet: -
Stock3 564
Plug, Male Pins
Rack and Panel
14
All
-
3
-
Panel Mount, Through Hole
Solder
-
Screwlocks
Gold
50µin (1.27µm)
Green
10123881-102LF
Amphenol FCI

MINI PCIE SMT

  • Connector Usage: Daughtercard
  • Connector Type: Header, Male Pins
  • Connector Style: High Speed
  • Number of Positions: 150
  • Number of Positions Loaded: All
  • Pitch: -
  • Number of Rows: 15
  • Number of Columns: 10
  • Mounting Type: Board Edge, Through Hole, Right Angle
  • Termination: Press-Fit
  • Contact Layout, Typical: -
  • Features: -
  • Contact Finish: -
  • Contact Finish Thickness: -
  • Color: Black, Natural
paquet: -
Stock8 082
Header, Male Pins
High Speed
150
All
-
15
10
Board Edge, Through Hole, Right Angle
Press-Fit
-
-
-
-
Black, Natural
0459858263
Molex, LLC

CONN HEADER 8PWR 32SGL 1.57MM

  • Connector Usage: -
  • Connector Type: Plug, Center Strip Contacts
  • Connector Style: LPHPower
  • Number of Positions: 40
  • Number of Positions Loaded: All
  • Pitch: 0.050" (1.27mm)
  • Number of Rows: 2
  • Number of Columns: -
  • Mounting Type: Through Hole, Right Angle
  • Termination: Solder
  • Contact Layout, Typical: 32 Signal, 8 Power
  • Features: Mating Guide
  • Contact Finish: Gold
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Black
paquet: -
Stock6 840
Plug, Center Strip Contacts
LPHPower
40
All
0.050" (1.27mm)
2
-
Through Hole, Right Angle
Solder
32 Signal, 8 Power
Mating Guide
Gold
30µin (0.76µm)
Black
0760559208
Molex, LLC

IMPACT BP 5X12 GR/END SN

  • Connector Usage: -
  • Connector Type: Header, Male Pins
  • Connector Style: Impact?, Guide Right
  • Number of Positions: 180
  • Number of Positions Loaded: All
  • Pitch: 0.053" (1.35mm)
  • Number of Rows: 15
  • Number of Columns: 12
  • Mounting Type: Through Hole
  • Termination: Press-Fit
  • Contact Layout, Typical: 60 Differential Pairs
  • Features: -
  • Contact Finish: Gold
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Black
paquet: -
Stock4 500
Header, Male Pins
Impact?, Guide Right
180
All
0.053" (1.35mm)
15
12
Through Hole
Press-Fit
60 Differential Pairs
-
Gold
30µin (0.76µm)
Black
5532446-5
TE Connectivity AMP Connectors

CONN HDI PLUG 60POS DUAL VERT

  • Connector Usage: -
  • Connector Type: Header, Male Pins
  • Connector Style: High Density (HDC, HDI, HPC)
  • Number of Positions: 60
  • Number of Positions Loaded: All
  • Pitch: 0.100" (2.54mm)
  • Number of Rows: 2
  • Number of Columns: -
  • Mounting Type: Through Hole
  • Termination: Press-Fit
  • Contact Layout, Typical: -
  • Features: Mating Guide
  • Contact Finish: Gold
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Natural
paquet: -
Stock7 650
Header, Male Pins
High Density (HDC, HDI, HPC)
60
All
0.100" (2.54mm)
2
-
Through Hole
Press-Fit
-
Mating Guide
Gold
30µin (0.76µm)
Natural
2-6600330-0
TE Connectivity AMP Connectors

MBXL VERT HDR 4P+36S+4P

  • Connector Usage: -
  • Connector Type: -
  • Connector Style: -
  • Number of Positions: -
  • Number of Positions Loaded: -
  • Pitch: -
  • Number of Rows: -
  • Number of Columns: -
  • Mounting Type: -
  • Termination: -
  • Contact Layout, Typical: -
  • Features: -
  • Contact Finish: -
  • Contact Finish Thickness: -
  • Color: -
paquet: -
Stock2 610
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0459858112
Molex, LLC

CONN HEADER 8PWR 12SGL 2.36MM

  • Connector Usage: -
  • Connector Type: Plug, Center Strip Contacts
  • Connector Style: LPHPower
  • Number of Positions: 20
  • Number of Positions Loaded: All
  • Pitch: 0.050" (1.27mm)
  • Number of Rows: 2
  • Number of Columns: -
  • Mounting Type: Through Hole, Right Angle
  • Termination: Solder
  • Contact Layout, Typical: 12 Signal, 8 Power
  • Features: -
  • Contact Finish: Gold
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Black
paquet: -
Stock7 398
Plug, Center Strip Contacts
LPHPower
20
All
0.050" (1.27mm)
2
-
Through Hole, Right Angle
Solder
12 Signal, 8 Power
-
Gold
30µin (0.76µm)
Black
223996-1
TE Connectivity AMP Connectors

CONN R/A PLUG HEADER 12P

  • Connector Usage: -
  • Connector Type: Header, Male Blades
  • Connector Style: Blade Power
  • Number of Positions: 12
  • Number of Positions Loaded: All
  • Pitch: -
  • Number of Rows: 1
  • Number of Columns: -
  • Mounting Type: Board Edge, Through Hole, Right Angle
  • Termination: Press-Fit
  • Contact Layout, Typical: 12 Power
  • Features: -
  • Contact Finish: Gold or Gold-Palladium
  • Contact Finish Thickness: -
  • Color: Gray
paquet: -
Stock8 334
Header, Male Blades
Blade Power
12
All
-
1
-
Board Edge, Through Hole, Right Angle
Press-Fit
12 Power
-
Gold or Gold-Palladium
-
Gray
51939-468LF
Amphenol FCI

R/A HDR POWERBLADE

  • Connector Usage: -
  • Connector Type: Header, Male Pins and Blades
  • Connector Style: Blade Power
  • Number of Positions: 36
  • Number of Positions Loaded: All
  • Pitch: 0.100" (2.54mm)
  • Number of Rows: 4
  • Number of Columns: -
  • Mounting Type: Board Edge, Through Hole, Right Angle
  • Termination: Solder
  • Contact Layout, Typical: 24 Signal, 12 Power
  • Features: Mating Guide
  • Contact Finish: Gold or Gold, GXT?
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Black
paquet: -
Stock2 124
Header, Male Pins and Blades
Blade Power
36
All
0.100" (2.54mm)
4
-
Board Edge, Through Hole, Right Angle
Solder
24 Signal, 12 Power
Mating Guide
Gold or Gold, GXT?
30µin (0.76µm)
Black
51702-10502400CCLF
Amphenol FCI

V/T HDR POWERBLADE

  • Connector Usage: -
  • Connector Type: Header, Male Pins and Blades
  • Connector Style: Blade Power
  • Number of Positions: 29
  • Number of Positions Loaded: All
  • Pitch: 0.100" (2.54mm)
  • Number of Rows: 4
  • Number of Columns: -
  • Mounting Type: Through Hole
  • Termination: Press-Fit
  • Contact Layout, Typical: 24 Signal, 5 Power
  • Features: Mating Guide
  • Contact Finish: Gold or Gold, GXT?
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Black
paquet: -
Stock3 402
Header, Male Pins and Blades
Blade Power
29
All
0.100" (2.54mm)
4
-
Through Hole
Press-Fit
24 Signal, 5 Power
Mating Guide
Gold or Gold, GXT?
30µin (0.76µm)
Black
51712-020LF
Amphenol FCI

PWRBLADE VERT HDR

  • Connector Usage: -
  • Connector Type: Header, Male Pins and Blades
  • Connector Style: Blade Power
  • Number of Positions: 16
  • Number of Positions Loaded: 14
  • Pitch: 0.100" (2.54mm)
  • Number of Rows: 4
  • Number of Columns: -
  • Mounting Type: Through Hole
  • Termination: Press-Fit
  • Contact Layout, Typical: 8 Signal, 8 Power
  • Features: Mating Guide
  • Contact Finish: Gold or Gold, GXT?
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Black
paquet: -
Stock7 272
Header, Male Pins and Blades
Blade Power
16
14
0.100" (2.54mm)
4
-
Through Hole
Press-Fit
8 Signal, 8 Power
Mating Guide
Gold or Gold, GXT?
30µin (0.76µm)
Black
51741-10001602CCLF
Amphenol FCI

V/T REC POWERBLADE

  • Connector Usage: -
  • Connector Type: Receptacle, Female Sockets and Blade Sockets
  • Connector Style: Blade Power
  • Number of Positions: 18
  • Number of Positions Loaded: All
  • Pitch: 0.100" (2.54mm)
  • Number of Rows: 4
  • Number of Columns: -
  • Mounting Type: Through Hole
  • Termination: Press-Fit
  • Contact Layout, Typical: 16 Signal, 2 Power
  • Features: Guide Pin
  • Contact Finish: Gold or Gold, GXT?
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Black
paquet: -
Stock7 272
Receptacle, Female Sockets and Blade Sockets
Blade Power
18
All
0.100" (2.54mm)
4
-
Through Hole
Press-Fit
16 Signal, 2 Power
Guide Pin
Gold or Gold, GXT?
30µin (0.76µm)
Black
MP2-SP10-51M1-LR
3M

CONN POWER SOCKET 5ROW 10POS SLD

  • Connector Usage: Backplane
  • Connector Type: Receptacle, Female Blade Sockets
  • Connector Style: Blade Power
  • Number of Positions: 10
  • Number of Positions Loaded: All
  • Pitch: -
  • Number of Rows: 5
  • Number of Columns: -
  • Mounting Type: Board Edge, Through Hole, Right Angle
  • Termination: Solder
  • Contact Layout, Typical: 10 Power
  • Features: Board Guide, Board Lock, Spacer
  • Contact Finish: Gold
  • Contact Finish Thickness: 3µin (0.08µm)
  • Color: Beige
paquet: -
Stock2 628
Receptacle, Female Blade Sockets
Blade Power
10
All
-
5
-
Board Edge, Through Hole, Right Angle
Solder
10 Power
Board Guide, Board Lock, Spacer
Gold
3µin (0.08µm)
Beige
51939-846LF
Amphenol FCI

R/A HDR POWERBLADE

  • Connector Usage: -
  • Connector Type: Header, Male Blades
  • Connector Style: Blade Power
  • Number of Positions: 4
  • Number of Positions Loaded: 2
  • Pitch: 0.100" (2.54mm)
  • Number of Rows: 1
  • Number of Columns: -
  • Mounting Type: Board Edge, Through Hole, Right Angle
  • Termination: Solder
  • Contact Layout, Typical: 4 Power
  • Features: Board Lock
  • Contact Finish: Gold or Gold, GXT?
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Black
paquet: -
Stock6 444
Header, Male Blades
Blade Power
4
2
0.100" (2.54mm)
1
-
Board Edge, Through Hole, Right Angle
Solder
4 Power
Board Lock
Gold or Gold, GXT?
30µin (0.76µm)
Black
0755455000
Molex, LLC

CONN RCPT 80 AMP MODULE TIN

  • Connector Usage: -
  • Connector Type: Receptacle, Female Sockets
  • Connector Style: Power
  • Number of Positions: 2
  • Number of Positions Loaded: All
  • Pitch: -
  • Number of Rows: 2
  • Number of Columns: -
  • Mounting Type: Through Hole
  • Termination: Press-Fit
  • Contact Layout, Typical: 2 Power
  • Features: -
  • Contact Finish: Gold
  • Contact Finish Thickness: 30µin (0.76µm)
  • Color: Black
paquet: -
Stock8 256
Receptacle, Female Sockets
Power
2
All
-
2
-
Through Hole
Press-Fit
2 Power
-
Gold
30µin (0.76µm)
Black