Spring-type terminals are new types of spring-type terminals, which have been widely used in the world's electrical and electronic engineering industries: lighting, elevator control, instrumentation, power, chemistry, and automotive power.
If the terminal block is black, one of the possibilities is not necessarily burning black, oxidation may also be black. So how to verify whether it is burnt black? The method we take is to wipe it with a finger. If it can be wiped off, like soot, it is the black substance formed by oxidation, which can only be ground off with sandpaper or a file.
Spring Terminal,Spring Push-In Terminal Block,Spring Clamp Terminal Block,Spring Terminal Block For Pcb Sichuan Xinlian electronic science and technology Company , https://www.sztmlch.com
101 GB/T 5993-1986 Fixed capacitors for electronic equipment Part 4: Sectional specification for solid and non-solid electrolyte aluminium capacitors (available for certification) Fixed capacitors for use in electronic equipment--Part 4: Sectional specification--Aluminium electrolytic capacitors With solid and non-solid electrolyte
102 GB/T 5994-1986 Fixed capacitors for electronic equipment - Part 4: Blank detail specification for non-solid electrolyte aluminium capacitors. Assessment level E (available for certification). Fixed capacitors for use in electronic equipment--Part 4: Blank detail specification-- Aluminium electrolytic capacitors with non-solid electrolyte--Assessment level E
103 GB/T 6252-1986 Type A tuning capacitors for electronic equipment Type specification for variable tuning capacitors--Type A in electronic equipments
104 GB/T 6253-1986 Class B fine-tuning variable capacitor type specification for electronic equipment Type specification for variable trimmer capacitors--Type B in electronic equipments
105 GB/T 6254-1986 Class C pre-adjustable variable capacitor type specification for electronic equipment Type specification for variable preset capacitors--Type C in electronic equipments
106 GB/T 6346-1986 Fixed capacitors for electronic equipment - Part 11: Sectional specification: Metal foil polyethylene terephthalate film dielectric DC fixed capacitors (available for certification) --Part 11: Sectional specification: Fixed polyethylene-terephthalate film dielectric metal foil DCcapacitors
107 GB/T 6347-1986 Fixed capacitors for electronic equipment - Part 11: Blank detail specification: Metal foil polyethylene terephthalate film dielectric DC fixed capacitors Assessment level E (available for certification) Use in electronic equipment--Part 11: Blank detail specification: Fixed polyethylene-terephthalate film dielectric metal foil DC capacitors--Assessment level E
108 GB/T 6429-1986 The name of type designation for quartz crystal units
109 GB/T 6430-1986 The rule of type designation for crystal holders (enclosures)
110 GB/T 6452-1986 Zirconium-Aluminium alloy powders for getter
111 GB/T 6453-1986 Zirconium-Aluminium alloy composite strips for getter
112 GB/T 6454-1986 Zirconium-aluminum alloy ring parts and pieces for suction Rinsing and tablets of zirconium-aluminium alloy for getter
113 GB/T 6455-1986 Mercury release combined strips for getter
114 GB/T 6591-1986 Capacitors and resistors for electronic equipment Terminology of capacitors and resistors for electronic equipment
115 GB/T 6625-1986 Test method for nitrogen content of nitrogen-doped getter
116 GB/T 6626.1-1986 Mercury release getter performance test method Test methods for the characteristics of getter-mercury dispenser--Test methods for mercury yield characteristic of getter-mercury dispenser
117 GB/T 6626.2-1986 Mercury release getter performance test method Test methods for the characteristics of getter-mercury dispenser--Test method for mercury content of getter-mercury dispenser
118 GB/T 6626.3-1986 Mercury release getter performance test method Test methods for the characteristics of getter-mercury dispenser--Test method for gas emission of getter mercury dispenser
119 GB/T 6626.4-1986 Mercury getter performance test method Test methods for the characteristics of getter-mercury dispenser--Method for peel off test of getter-mercury dispenser
120 GB/T 6627-1986 Designation for lumbered synthetic quartz crystals
121 GB/T 6643-1986 General purpose rigid coaxial transmission line and its flange connector general specification rigid coaxial transmission lines and their associated flange connectors--Generic specification
122 GB/T 6663-1986 General specification for direct heating negative temperature coefficient thermistors (available for certification) General specification for the directly heated negative temperature coefficient thermistors
123 GB/T 6664-1986 Direct thermal negative temperature coefficient thermistor blank detail specification evaluation level E (for certification) Blank detail specification for directly heated negative temperature coefficient thermistors--Assessment level E
124 GB/T 6832-1986 Methods of measurement on headphones
125 GB/T 7016-1986 Method for measuring the current noise generated in fixed resistors
126 GB/T 7017-1986 Method of measurement of non-linearity in resistors
127 GB/T 7153-1987 Generic specification for the directly heated positive step-function temperature coefficient thermistors
128 GB/T 7154-1987 Direct thermal step type positive temperature coefficient thermistor blank detail specification evaluation level E (for certification) Blank detail specification for the directly heated positive step-function temperature coefficient thermistors--Assessement level E
129 GB/T 7213-1987 Fixed capacitors for electronic equipment - Part 15: Sectional specification non-solid or solid electrolyte tantalum capacitors (available for certification) Fixed capacitors for use in electronic equipment--Part 15: Sectional specification--Fixed tantalum Capacitors with non-solid or solid electrolyte
Fixed voltage capacitors for electronic equipment - Part 15: Blank detail specification for solid electrolytes and porous anode tantalum capacitors. Assessment level E (available for certification) Fixed capacitors for use in electronic equipment--Part 15: Blank Detail specification--Fixed tantalum capacitors with solid electrolyte and porous anode--Assessment level E
131 GB/T 7265.1-1987 Test method for complex permittivity of solid dielectric materials at microwave frequencies--Perturbation method
132 GB/T 7265.2-1987 Test method for the complex permittivity of solid dielectric materials at microwave frequencies-- Open cavity method
133 GB/T 7332-1996 Fixed capacitors for electronic equipment - Part 2: Sectional specification: Metallized polyethylene terephthalate film dielectric fixed capacitors for use in electronic equipment--Part 2: Sectional specification-- Fixed metallized polyethylene-terephthalate film dielectric dccapacitors
134 GB/T 7333-1996 Fixed capacitors for use in electronic equipment - Part 2: Blank detail specification - s. Detail specification--Fixed metallized polyethylene-terephthalate film dielectric dccapacitors--Assessment level E
135 GB/T 7338-1996 Fixed resistors for electronic equipment - Part 6: Sectional specification Fixed resistors for use in electronic equipment--Part 6: Sectional specification--Fixed resistor networks with individually Measurable resistors
136 GB/T 7339-1987 Fixed resistors for electronic equipment - Part 6: Blank detail specification: Fixed resistance network with equal resistance and power consumption, each resistor can be measured separately. Level E (available for certification) Use in electronic equipment--Part 6: Blank detail specification--Fixed resistor networks with individually measurable resistors, all of equalvalue and equal dissipation--Assessment level E
137 GB/T 7340-1987 Fixed resistors for electronic equipment - Part 6: Blank detail specification: sssssssssssssssssssssssssssssss Use in electronic equipment--Part 6: Blank detail specification--Fixed resistor networks with individually measurable resistor of either different resistance values ​​or different rated dissipations--Assessment level E
138 GB/T 7345-1994 General requirements for electrical micromachines for automatic control systems
139 GB/T 7423.1-1987 General specifications for semiconductor device heat sinks Heat sink of semiconductor devices--Generic specification
140 GB/T 7423.2-1987 Semiconductor device heat sink profile heat sink Heat sink of smiconductor devices--Heat sink, extruded shapes
141 GB/T 7423.3-1987 Semiconductor device heat sink interdigitated heat sink Heat sink of semiconductor devices--Heat sink, Staggered fingers shapes
142 GB/T 7556-1987 General characteristics complying with the network performance objectives for 60 channel carrier telephone systems on symmetric cable pairs
143 GB/T 7557-1987 General characteristics complying with the network performance objectives for 300 channel carrier telephone systems on standardized 1.2/4.4mm coaxial cable pairs
144 GB/T 7613.1-1987 Test method for current proof of conductors on printed boards
145 GB/T 7613.2-1987 Test methods for voltage proof of surface layers on printed boards
146 GB/T 7613.3-1987 Test methods for current proof of plated-through holes on printed boards
147 GB/T 7614-1987 Wide artificial ear of wide band type for the calibration of earphones used in audiometry
148 GB/T 8553-1987 Crystal Box General Specification Holders (Enclosures), crystal, general specification for
149 GB/T 8977-1988 300Ω/75Ω balanced-unbalanced impedance converter for FM and TV broadcast receivers 300Ω/75Ω balun for FM and TV broadcast receiver
150 GB/T 9020-1988 Video coaxial connector general specification Visual-frequency--Coaxial connectors, generic specification of
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