Accurate Current Sensing Resistor Walter Elec STE1206M1W0R030F Metal Foil with Black Marking Coating

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Product Description

Product Overview

The STE series of metal foil current sensing resistors are designed for precise current measurement. These components offer high accuracy and reliability, making them suitable for various electronic applications requiring accurate current monitoring.

Product Attributes

Brand: STE
Material: MnCu alloy, Alloy, Special
Substrate: Alumina Ceramic
Protective Coating: Flame-retardant epoxy (UL-94-V0 compliant), Green
Marking Coating: Flame-retardant epoxy (UL-94-V0 compliant), Black

Technical Specifications

Part Number Series	Dimensions (W x L x T) (mm)	Nominal Resistance Value (m)	Power Rating (Watt)	Resistance Tolerance (%)	TCR (ppm)
STE0603*W50-series	0.900.20 x 1.700.20 x 0.650.20	R005~R60	0.5	1%(F), 0.5%(D)	100, 50
STE0805*W75-series	1.350.20 x 2.100.20 x 0.650.20	R003~R200	0.75	1%(F), 0.5%(D)	100, 50
STE1206*1W0-series	1.700.20 x 3.300.20 x 0.650.20	R003~R400	1.0	1%(F), 0.5%(D)	100, 50
STE2010*1W5-series	2.600.20 x 5.100.20 x 0.650.20	R002~R400	1.5	1%(F), 0.5%(D)	100, 50
STE2512*2W0-series	3.200.30 x 6.400.30 x 0.650.20	R002~R400	2.0	1%(F), 0.5%(D)	100, 50
STE3921*3W0-series	5.100.30 x 11.100.30 x 0.650.20	R002~R100	3.0	1%(F), 0.5%(D)	100, 50
STE4527*4W0-series	7.101.0 x 11.601.0 x 0.650.30	R002~R100	4.0	1%(F), 0.5%(D)	100, 50

Reliability Test Standards

Test Parameter	Conditions	Requirements	Reference Standard
Short Time Over Load	P= 2.5Pr ; T=252C , t = 5sec.	(1.0%+0.5m)	IEC60115-1 4.13
High Temp. Exposure	T = +1702C ; t = 1000h	(1.0%+0.5m)	IEC60115-1 4.25
Low Temp. Storage	T = -552C ; t = 1000h	(1.0%+0.5m)	IEC60115-1 4.25
Moisture Load Life	(60, 95%RH) Vtest = Vmax ; T=602C ; RH=95% ; t= 90min ON , 30min OFF , 1000h	(2.0%+0.5m)	IEC60115-1 4.25
Thermal Shock	[-55C 30min. R.T. 3min. +155C 30min. R.T. 3min ], 100 Cycles	(1.0%+0.5m)	IEC60115-1 4.19
Load Life at 70C	Vtest = Vmax ; T=702C ;t= 90min ON , 30min OFF,1000h	(2%+0.5m)	IEC60115-1 4.25
Solderability	Dip into solder at T = 2455C , t = 30.5sec.	The covered area >95%	IEC60115-1 4.17
Resistance to Solder Heat	Through Reflow T= 2755C , t =201sec.	(1.0%+0.5m)	IEC60115-1 4.18
Mechanical Shock	a =100G , t =11ms, 5 times shock	(1.0%+0.5m)	IEC60115-1 4.21
Substrate Bending	Span:90mm ; Bend:2mm ; Test board: Glass-Epoxy Board ; Thickness =1.6mm	(1.0%+0.5m)	IEC60115-1 4.33

Environmental Characteristics

Operating Temperature Range: -55155

Storage Conditions:

Under airtight in temperature +1040, relative humidity 75% can store for 2 years.
Without dew in temperature +1060, relative humidity 95% maximum value for 30 days.

Recommended Solder Pad Size and Welding Conditions

Part Number Series	P (mm)	W (mm)	D (mm)	Loading (Watt)
STE0603MW50-series	0.50	0.92	1.35	0.50w
STE0603MW50-series	0.60	0.92	1.30	0.50w
STE0805MW75-series	0.50	1.44	1.55	0.75w
STE0805MW75-series	0.80	1.44	1.40	0.75w
STE1206M1W0-series	0.60	1.84	2.10	1.0w
STE1206M1W0-series	1.20	1.84	1.80	1.0w
STE2010M1W5-series	0.70	2.88	3.65	1.5w
STE2010M1W5-series	2.70	2.88	2.65	1.5w
STE2512M2W0-series	0.60	3.57	4.35	2.0w
STE2512M2W0-series	0.90	3.57	4.20	2.0w
STE2512M2W0-series	3.10	3.57	3.10	2.0w
STE3921M3W0-series	1.10	5.75	6.45	3.0w
STE3921M3W0-series	1.70	5.75	6.15	3.0w
STE3921M3W0-series	5.00	5.75	4.50	3.0w
STE4527M4W0-series	1.20	8.05	6.65	4.0w
STE4527M4W0-series	5.20	8.05	4.65	4.0w

Recommended Customer Soldering Parameters:

Wave Solder Temperature Curve: Preheating: 100~130, max.100 sec. Soldering: 250~265 max. 10 sec. Maximum temperature: 2605, max. 10sec.
Solder Reflow Temperature Curve: Preheating: 145 15, max.120 sec. Soldering: min. 220, max. 60 sec. Maximum temperature: 2605, max. 10sec.