AMSR08 Alloy Current Sense Resistor
Description
- Metal Alloy Short Terminal Low-Resistance Resistor
- Low thermal EMF
- Low TCR
- Low inductance
- AEC-Q200 qualified available.
Applications
- Battery pack
- Inverter/Converter
- Consumer electronics
- Laptops
Part number
【1】Series Name: Metal alloy Short terminal Resistor for Automotive
【2】Chip Size: 08:0805
【3】Terminals: A:2 terminals , B:4 terminals
【4】 Power Rating: D=0.75W
【5】 Resistance Code: R020: 20mΩ
【6】 Resistance Precision: D:±0.5%, F:±1%, G:±2%, J: ±5%
【7】 Marking Code: 1:No marking 2: Marking
Electrical Characteristics
| Part number | Power Rating at 70℃(W) |
Resistance Range (mΩ) |
TCR (ppm/℃) |
Resistance Tolerance (%) |
Rating Current |
Operation Temperature Range |
|---|---|---|---|---|---|---|
| AMSR08A | 0.75 | 20 | ±50 | ±1.0 | (P/R)1/2 | -55℃~+150℃ |
Note: P=Rating Power ; R=Resistance Value
Physical Dimensions
Unit: mm
| Part number | L | W | H | T |
|---|---|---|---|---|
| AMSR08ADR020F | 2.06±0.20 | 1.26±0.20 | Max 0.35 | 0.43±0.15 |
Marking Instructions
AMSR08A is marked with three digit. We have two different ways of marking：
a. “R” designates the decimal location in ohms
e.g. 2mΩ : 002; 20mΩ : 020
b. “m” designates the decimal location in milliohms
e.g. 2.5mΩ : 2m5; 5.5mΩ : 5m5
Recommended Solder Pad Layout
Unit: mm
| Part number | a | b | c |
|---|---|---|---|
| AMSR08ADR020F | 0.80 | 1.45 | 1.52 |
Construction
Power Derating Curve
For resistors operated in ambient temperatures 70°C, power rating shall be derated in according with the curve below:
Recommended Solder Curve
| Reflow Condition | Pb - Free assembly | |
|---|---|---|
| Pre heat | - Temperature Min (TS(min)) | 150°C |
| - Temperature Max (TS(max)) | 200°C | |
| - Time (Min to Max) (tS) | 60 - 120 secs | |
| Average ramp up rate (Liquidus Temp (TL) to peak | 5°C/second max | |
| TS(max) to TL - Ramp-up Rate | 5°C/second max | |
| Reflow | - Temperature (TL) (Liquidus) | 217°C |
| - Temperature (tL) | 60 - 150 seconds | |
| Peak Temperature (TP) | 260°C | |
| Time within 5°C of actual peak Temperature (tP) | 20 - 40 seconds | |
| Ramp-down Rate | 5°C/second max | |
| Time 25°C to peak Temperature (TP) | 8 minutes Max. | |
| Wave Soldering | Not applicable | |
| Hand Soldering | 350°C, 5 seconds max. | |
Product Characteristics
| Item | Test condition/Methods | Limited | Standard |
|---|---|---|---|
| Resistance | Measuring resistance value at room temperature 25℃±5℃ |
Refer to Spec |
IEC60115-14.5 |
| External Visual | There is no need for electrical test,check the device structure,identification and process quality,and electrical test is not required. |
Refer to Spec |
MIL-STD-883 Method 2009 |
| Physical Dimension |
Verify physical dimensions according to device specifications. |
Refer to Spec |
JESD22-B100 |
| Temperature Coefficient of Resistance |
TCR(ppm/℃)=(R2-R1/R1*(T2-T1))X 10⁶ R1:resistance value measured at room temperature(Ω) R2:Resistance measured at 125°C(Ω) T1:room temperature(°C) T2:125℃ |
Refer to Spec |
IEC 60115-14.8 |
| Short Time Overload |
3 times the rated power for 5 seconds | ≤±1% | IEC 60115-14.13 |
| High Temperature Storage |
150℃ for 1000hours,No power. | ≤±1% | MIL-STD-202 Method 108 |
| Temperature Cycling |
Pre-treatments with 3X reflow,-55℃(15min)/+125℃ (15min),1000 cycles,transition time less than 1 minute |
≤±1% | MIL-STD-202 Method107G |
| Bias Humidity | Pre-treatments with 3X reflow,+85℃,85%RH,10% of operating power,1000hours |
≤±3% | MIL-STD-202 Method103 |
| Operational life | Pre-treatments with 3X reflow,70℃±2℃,1000 hours, at rated power 1.5 hours “ON”,0.5 hours “OFF”. |
≤±3% | MIL-STD-202 Method 108 |
| Mechanical shock | Condition C,100 g’s ,6 msec,3 mutually perpendicular axes,in 6 directions,three impacts each for a total of 18 times 18 shocks. |
≤±0.5% | MIL-STD-202 Method 213 |
| Vibration | 5g's for 20 minutes 12 cycles each of 3 orientations. Test from 10Hz-2000 Hz |
≤±0.5% | MIL-STD-202 Method 204 |
| Resistance to Soldering Heat |
Condition K,time above 217℃,60s-150s | ≤±0.5% | MIL-STD-202 Method 210 |
| ESD | Direct Contact Discharge 8KV,Air Discharge 25KV | ≤±1% | AEC-Q200-002 |
| Solderability | 245±5℃ time:5sec+0/-0.5sec. | ≥95% | J-STD-002 |
| Board Flex | Bend the board (D)x=2 mm minimum,the duration of the applied forces shall be 60(+5)Sec. |
≤±1% | AEC-Q200-005 |
| Terminal Strength | Apply a 17.7 N(1.8 Kg)force to the side of a device being tested.This force shall be applied for 60 +1 seconds. |
≤±1% | AEC-Q200-006 |
| Moisture resistance |
MIL-STD-202,method106,No power,7b not required | ≤±0.5% | MIL-STD-202 Method 106 |
Note : Measurement at 24±4 hours after test conclusion for all reliability tests-parts.
Packaging
Tape Dimensions
| Type | AMSR08A |
|---|---|
| A0 | 1.66±0.20 |
| B0 | 2.46±0.20 |
| E | 1.75±0.10 |
| F | 3.50±0.05 |
| W | 8.00±0.20 |
| P0 | 4.00±0.10 |
| P | 4.00±0.10 |
| P1 | 2.00±0.05 |
| D0 | 1.50±0.10 |
| T | 0.55±0.20 |
Reel Dimensions
Unit: mm
| Type | M | W | A | B | C | D |
|---|---|---|---|---|---|---|
| 7 inch reel | 178.0±2.0 | 8.4+0.5/-0 | 2.0±0.5 | 13.2±0.5 | 17.70±0.5 | 60.0±1.0 |
Quantity of Package
| Type | AMLR06A |
|---|---|
| Quantity(pcs） | 5000 |
Storage
The temperature condition must be controlled less than 40℃, The R.H. must be controlled less than 75%. Store in accordance with this requirement, and the validity period is two years after the date of manufacture.
Please avoid the mentioned harsh environment below when storing to ensure product performance and its’ weldability. Places exposed to sea breeze or other corrosive gas, such as Cl2 , H2S, NH3 , SO2 and NO2 .
When the product is moved and stored, please ensure the correct orientation of the box. Do not drop or squeeze the box. Otherwise, the electrode or the body of the product may bedamaged.