STE Series Current Sensing Resistor

The STE series are metal foil current sensing resistors designed for high-precision current measurement. They are suitable for applications requiring accurate monitoring of current flow.

Product Attributes

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

Technical Specifications

Part Number Series	Dimensions (W x L x T) (mm)	Resistance Value (m)	Power Rating (Watt)	Resistance Tolerance (%)	TCR (ppm)
STE0603*W50-series	0.900.20 x 1.700.20 x 0.650.20	5~9	0.5	1%(F)	100
STE0603*W50-series	0.900.20 x 1.700.20 x 0.650.20	10~60	0.5	0.5%(D) / 1%(F)	50
STE0805*W75-series	1.350.20 x 2.100.20 x 0.650.20	3~9	0.75	1%(F)	100
STE0805*W75-series	1.350.20 x 2.100.20 x 0.650.20	10~200	0.75	0.5%(D) / 1%(F)	50
STE1206*1W0-series	1.700.20 x 3.300.20 x 0.650.20	3~9	1.0	1%(F)	100
STE1206*1W0-series	1.700.20 x 3.300.20 x 0.650.20	10~400	1.0	0.5%(D) / 1%(F)	50
STE2010*1W5-series	2.600.20 x 5.100.20 x 0.650.20	2~9	1.5	1%(F)	100
STE2010*1W5-series	2.600.20 x 5.100.20 x 0.650.20	10~400	1.5	0.5%(D) / 1%(F)	50
STE2512*2W0-series	3.200.30 x 6.400.30 x 0.650.20	2~9	2.0	1%(F)	100
STE2512*2W0-series	3.200.30 x 6.400.30 x 0.650.20	10~400	2.0	0.5%(D) / 1%(F)	50
STE3921*3W0-series	5.100.30 x 11.100.30 x 0.650.20	2~9	3.0	1%(F)	100
STE3921*3W0-series	5.100.30 x 11.100.30 x 0.650.20	10~100	3.0	0.5%(D) / 1%(F)	50
STE4527*4W0-series	7.101.0 x 11.601.0 x 0.650.30	2~9	4.0	1%(F)	100
STE4527*4W0-series	7.101.0 x 11.601.0 x 0.650.30	10~100	4.0	0.5%(D) / 1%(F)	50

Reliability Test Standards

Test Parameter	Conditions	Requirements
Short Time Over Load	P= 2.5Pr ; T=252C , t = 5sec.	(1.0%+0.5m)
High Temp. Exposure	T = +1702C ; t = 1000h	(1.0%+0.5m)
Low Temp. Storage	T = -552C ; t = 1000h	(1.0%+0.5m)
Moisture Load Life	(6095RH) Vtest = Vmax ; T=602C ; RH=95% ; t= 90min ON , 30min OFF , 1000h	(2.0%+0.5m)
Thermal Shock	[-55C 30min. R.T. 3min. +155C 30min. R.T. 3min ], 100 Cycles	(1.0%+0.5m)
Load Life at 70C	Vtest = Vmax ; T=702C ;t= 90min ON , 30min OFF,1000h	(2%+0.5m)
Solderability	Dip into solder at T = 2455C , t = 30.5sec.	Covered area >95%
Resistance to Solder Heat	Through Reflow T= 2755C , t =201sec.	(1.0%+0.5m)
Mechanical Shock	a =100G , t =11ms, 5 times shock	(1.0%+0.5m)
Substrate Bending	Span:90mm ; Bend Width:2mm ; Board: Glass-Epoxy, Thickness =1.6mm	(1.0%+0.5m)

Environmental Characteristics

Operating Temperature: -55155
Storage Conditions:
- 2 years under airtight conditions (+1040, 75% RH)
- 30 days maximum without dew (+1060, 95% RH)

Recommended Solder Pad Dimensions

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

2410121318_Walter-Elec-STE0805MW75R030F_C201261.pdf

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