This standard specifies the terms, models, technical requirements, test methods, inspection rules, marking, packaging and storage of bridge rectifiers for UQ series motor vehicles. This standard applies to bridge rectifier components for motor vehicles such as automobiles and tractors, and also to bridge rectifier components (hereinafter referred to as components) used in conjunction with AC motors on stationary internal combustion engines. JB/T 6305-1992 Bridge rectifier components for UQ series motor vehicles JB/T6305-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
UQ Series Bridge Rectifier Assemblies for Motor Vehicles
1 Subject Content and Scope of Application
JB/T6305-92
This standard specifies the terms, models, technical requirements, test methods, inspection rules, marking, packaging and storage of UQ series bridge rectifier assemblies for motor vehicles.
This standard applies to bridge rectifier assemblies for motor vehicles such as automobiles and tractors, and also to bridge rectifier assemblies (hereinafter referred to as assemblies) used in conjunction with AC generators on stationary internal combustion engines. 2 Reference standards
GB4937
GB4938
Mechanical and climatic test methods for discrete semiconductor devices Acceptance and reliability of discrete semiconductor devices
GB2900.32 Electrical terminology Power semiconductor devices GB2900.33 Electrical terminology Converter
ZBT35001
GB3859
JB4159
3 Terms and models
3.1 Terms
Basic technical conditions for automotive electrical equipment
Semiconductor power converter
General technical conditions for tropical electrical products
3.1.1 Bridge rectifier assembly for motor vehicles
A component consisting of a main rectifier unit and auxiliary circuits (if any), used for rectification of motor vehicle AC generators (Figure 1). 3.1.2 Main rectifier unit
A unit that independently completes the full-wave bridge rectifier function (if any, also includes the neutral point rectifier tube) (Figure 1 Part I, [). 3.1.3 Auxiliary rectifier unit
A rectifier unit that cooperates with the main rectifier unit to complete the bridge rectifier function for generator excitation (Figure 1 Part 1). 3.1.4 Neutral point rectifier tube
Two rectifier tubes connected to the neutral point N of the generator stator for three-phase unbalanced current rectification (Figure 1 Part I). 3.1.5 Input terminal
The terminal of the rectifier component connected to the output terminal of the AC generator stator (A, B, C, N terminals in Figure 1). 3.1.6 Positive (negative) plate
The heat sink where the positive (negative) output terminal of the main rectifier unit is located is the positive (negative) plate. 3.1.7 Module rated current (1.)
The maximum DC current output across the positive and negative plates under specified conditions. 3.1.8 Module forward peak voltage (Vpu) The highest value of the forward peak voltage of all rectifiers in the module under specified conditions. 3.1.9 Module reverse repetitive peak voltage (Vm) The lowest value of the reverse repetitive peak voltage of all rectifiers in the module under specified conditions. Approved by the Ministry of Machinery and Electronics Industry on June 26, 1992 and implemented on January 1, 1993
JB/T6305-92
Generator
3.1.10 Module reverse repetitive peak current (Igkm) The maximum value of the reverse repetitive peak current of all rectifiers in the module under specified conditions. IxM and IxRM are the values ​​under 25C and Tm conditions respectively.
3.1.11 Rated current of auxiliary rectifier unit (Io) Under specified conditions, the maximum DC current output by the auxiliary rectifier unit. 3.1.12 Maximum temperature of the module (T)
Under specified conditions, the highest temperature of the three or four rectifier tubes on the positive plate of the module (closest to the chip). 3.2 Model
3.2.1 The module model is specified as follows
Auxiliary rectifier unit level
Ambient temperature level
Rated current value of the module (unit: A)
Electrical connection form code
For motor vehicles
Example: The circuit connection form of the rectifier module for motor vehicles is D type, the rated current is 50A, the applicable ambient temperature is -40~75℃, and the model should be UQD50L.
① The code of the electrical connection form shall be in accordance with the industry standard "Nomenclature method for power semiconductor device models". ②The module model should be stated on the order form.
3.2.2 The classification of environmental conditions shall be in accordance with the provisions of Table 1. L
Environmental temperature
-40～75
-40~85
-40～95
The relative humidity level shall be indicated in the order form. JB/T6305-92
Relative humidity
I40~75
i,>75~90
I,>90(at 25℃)
When the air pressure is lower than 86kPa, the rated value of the component shall be amended accordingly in accordance with Appendix B of GB3859. 4 Technical requirements
Environmental air pressure
86~106
4.1 The product shall be manufactured in accordance with the drawings and design documents approved in the prescribed procedures, and each rectifier tube in the component shall meet the corresponding single tube standard. 4.2 Ratings
The maximum ratings (limit values) of the components shall comply with the provisions of Table 2, Table 3 and Table 4. Table 2
Component rated
Current 1.
5min over-saddle
Current I
Component installation groove diameter
Tightening torque
Auxiliary rectification
Unit level
Rated current Iop
Single tube rated
Junction temperature T
Component maximum
Temperature T.
Storage temperature T.
-40~150
5min overload current Iov
Reverse repetitive peak voltage Vux
Component reverse repetitive
Peak voltage Varx
Single tube rated junction temperature T
Insulation withstand voltage Viso
Storage temperature T.
-40150
4.3 Characteristic values
JB/T630592
4.3.1 The characteristic values ​​of the components shall comply with the provisions of Table 5. All characteristic values ​​in the table are upper limit values. Table 5
Component rated current 1.
Auxiliary rectifier unit
Component reverse repetitive peak current Iax:
V and I images should be measured with the input terminal and the positive (negative) plate as the measuring terminal, and the component reverse repetitive
peak current TRM1
4.3.2 The manufacturer should provide the relationship curve between the component temperature and the specified current (Tc-Io curve). Batch inspection and periodic inspection
Batch inspection
Each batch of products should be inspected batch by batch according to Table 6, and all items of batch inspection are non-destructive inspections. Table 6
Inspection items
Electrical characteristics
Vre Ixox
Functional test
5.2 Periodic inspection
Inspection method
Visual inspection under normal lighting and normal vision, JB4159, 2.4.1 Level 1 and 2.4.3 Level 1
6.1, 6.2
Qualification criteria
Module forward
Bee value voltage Vrk
Sampling plan
The marking is clear, and the surface coating is not peeled off or damaged. No loosening of fasteners, no cracks in insulating parts
Conforms to Table 5
Measurement after test: V and 1 at 25C, conform to Table 51.5
Table 7 Except for the thermal cycle load test No. 12, at least one batch of products shall be tested every three years during product identification or finalized mass production. For all other items in Table 7, at least one batch of products shall be inspected every year for finalized products in normal production. 10
Inspection items
Ambient torquebzxZ.net
Weldability (only for welding terminals)
Insulation withstand voltage
Overload current
Welding heat resistance (D) (only for welding terminals)
Temperature change (D)
Temperature rise test
Electrical durability
(High temperature reverse bias)
High temperature storage (D)
Thermal cycle load test
JB/T6305-92
Inspection method
Use vernier caliper and ruler
Use force wrench to apply force according to Table 3
GB4937, 2.2.1 Tinning method, solder
235±5℃, penetration time 2±0.5s
GB4937, 2.2.2
ZBT35001, 4.3 40~150C
ZBT35001, 4.7 On generator
GB4938
1000+h,T,-1C
f=50Hz,70%Vanx
GB4937,3.2
1000h, Tstg maximum value
①, USL in the qualification criterion column is the corresponding characteristic upper limit value in Table 5. In batch inspection and periodic inspection, the sampling unit of the component is set. ②
③The inspection marked with (D) is a destructive inspection. 6 Test method
6.1 Component forward peak voltage VM.
6.1.1 Purpose
Qualification criterion
Meet the requirements of the design drawings
No looseness, no slippage
Good diffusion
Measure V after the test
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