Surface Mount Resistors

Surface mount resistors, also reffered to as SMD, are the most widely used resistors as they reduce the flow of the electrical current in circuits. Similar to water flowing along a pipe, the tap controls the flow of water, a resistor controls the flow of current. They work to a fixed value the resistance does not change in temperature or voltage.

These resistors offer advantages in space saving on Printed Circuit Boards (PCB's). Some common package sizes are 0201,0402,0603,0805,1206,1210,2020,2512.

Resistors are used in large volumes and are the preferred choice in electronics equipment due to their small size and high reliability. SMD resistors are particularly used in telecommunication, automotive (AEC Q200 qualified) and medical equipment, they also found in personal devices, displays and advanced technology research instruments.

Types of surface mount resistors

Thin Film Resistors have a higher precision than the thick film
Thick Film Resistors are used for general use due to a lower price point
Moulded Wirewound Resistors offer higher power
Foil Resistors for ultra-high precision and really low-Temperature coefficient of resistance
Shunts (current sense) Low ohmic values for where current measurement is critica
Melf (cylindrical) offering superb pulse load capability

What are surface mount fixed resistors used for?

SMD fixed resistors are very compact and used in most electronic board design. Due to their compact size and the continuous development of ever smaller footprints, this has allowed for the development of ever smaller PCB designs and the ability to get more from the board. The resistors can assist in the reduction of component count on the board.

What is the difference between Thin Film Resistors and Thick Film Resistors?

The main difference being that the thick film resistors have a paste fired on to the manufacturers chosen substrate. Thin film resistors as the name suggests has an extremely thin metal film that is generally vacuum deposited on to the manufacturers chosen substrate.

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KOA SG73P 6.8kΩ, 0805 (2012M) Thick Film SMD Resistor ±1% 0.5W RS Stock No. 178-6902 Mfr. Part No. SG73P2ATTD6801F Each (On a Reel of 500) MYR0.157 Quantity	KOA	6.8kΩ	0805 (2012M)	Thick Film	±1%	0.5W	±100ppm/°C	AEC-Q200	-	-	-	-	SG73P	-55°C	+155°C	-
Wurth Elektronik, 0402 (1005M) Thick Film SMD Resistor ±1% 0.1W RS Stock No. 427-454 Mfr. Part No. 560112110057 Each (On a Tape of 10) MYR0.161 Quantity	Wurth Elektronik	-	0402 (1005M)	Thick Film	±1%	0.1W	-	-	-	-	-	-	-	-	-	-
TE Connectivity CRG 470kΩ, 1206 (3216M) Thick Film SMD Resistor ±1% 0.25W RS Stock No. 223-2619 Mfr. Part No. CRG1206F470K Each (In a Pack of 50) MYR0.09 Quantity	TE Connectivity	470kΩ	1206 (3216M)	Thick Film	±1%	0.25W	±100ppm/°C	-	-	-	-	-	CRG	-55°C	+125°C	-
Panasonic ERA 1.87kΩ, 0603 (1608M) Metal Film SMD Resistor ±0.1% 0.1W RS Stock No. 169-1401 Mfr. Part No. ERA3APB1871V Each (On a Reel of 5000) MYR1.23 Quantity	Panasonic	1.87kΩ	0603 (1608M)	Metal Film	±0.1%	0.1W	±15ppm/°C	AEC-Q200	-	-	-	-	ERA	-55°C	+155°C	-
TE Connectivity CRGS 3.3MΩ, 0603 (1608M) Thick Film SMD Resistor ±5% 0.25W RS Stock No. 904-5245 Mfr. Part No. CRGS0603J3M3 Each (In a Bag of 100) MYR0.462 Quantity	TE Connectivity	3.3MΩ	0603 (1608M)	Thick Film	±5%	0.25W	±100ppm/°C	-	-	-	-	-	CRGS	-55°C	+155°C	-
ROHM MCR 47Ω, 0603 (1608M) Thick Film SMD Resistor ±1% 0.1W RS Stock No. 901-3513 Mfr. Part No. MCR03EZPFX47R0 Each (In a Bag of 100) MYR0.024 Quantity	ROHM	47Ω	0603 (1608M)	Thick Film	±1%	0.1W	±100ppm/°C	-	-	-	-	-	MCR	-55°C	+155°C	-
TE Connectivity NEOHM SMA-Q 1kΩ, 0204 (1005M) Thin Film SMD Resistor 1% 0.4W RS Stock No. 590-358 Mfr. Part No. SMA-Q0204FTDX1K0 Each (On a Reel of 3000) MYR0.128 Quantity	TE Connectivity	1kΩ	0204 (1005M)	Thin Film	1%	0.4W	±50ppm/°C	AEC-Q200 Compliant	-	-	-	-	NEOHM SMA-Q	-55°C	+155°C	-
TE Connectivity CRGS 390Ω, 1206 (3216M) Thick Film SMD Resistor ±5% 0.6W RS Stock No. 905-9341P Mfr. Part No. CRGS1206J390R Each (Supplied on a Reel) MYR0.74 Quantity	TE Connectivity	390Ω	1206 (3216M)	Thick Film	±5%	0.6W	≤±100ppm/°C	-	-	-	-	-	CRGS	-55°C	+155°C	-
Panasonic, 0603 (1608M) Thick Film Surface Mount Fixed Resistor ±1% 0.1W RS Stock No. 277-827 Mfr. Part No. ERJ3EKF1053V Each (In a Bag of 10) MYR0.039 Quantity	Panasonic	-	0603 (1608M)	Thick Film	±1%	0.1W	-	-	-	-	-	-	-	-	-	-
Vishay, 0603 (1608M) Thin Film SMD Resistor ± 0.1% 0.125W RS Stock No. 262-0723P Mfr. Part No. TNPW0603232KBEEA Each (Supplied on a Reel) MYR0.811 Quantity	Vishay	-	0603 (1608M)	Thin Film	± 0.1%	0.125W	-	-	-	-	-	-	-	-	-	-
Vishay, 02016 Thin Film Resistor 1 %, 2 %, 5 % 0.03W RS Stock No. 277-502 Mfr. Part No. CHA02016-50RJFT Each (On a Reel of 1000) MYR10.998 Quantity	Vishay	-	02016	Thin Film	1 %, 2 %, 5 %	0.03W	-	-	-	-	-	-	-	-	-	-
TE Connectivity TLM, 2512 (6432M) Metal Foil SMD Resistor 1% 2W RS Stock No. 477-884 Mfr. Part No. TLMQ3ADR039FTE Each (On a Reel of 4000) MYR1.24 Quantity	TE Connectivity	-	2512 (6432M)	Metal Foil	1%	2W	±50ppm/°C	AEC-Q200	-	-	-	-	TLM	-55°C	+170°C	-
Panasonic ERJ 50mΩ, 0805 (2012M) Thick Film SMD Resistor ±1% 0.5W RS Stock No. 183-9021P Mfr. Part No. ERJ6BWFR050V Each (Supplied on a Reel) MYR1.083 Quantity	Panasonic	50mΩ	0805 (2012M)	Thick Film	±1%	0.5W	±200ppm/°C	AEC-Q200	-	-	-	-	ERJ	-55°C	+155°C	-
Vishay CRCW 820Ω, 0603 (1608M) Thick Film SMD Resistor ±1% 0.25W RS Stock No. 820-6903 Mfr. Part No. CRCW0603820RFKEAHP Each (In a Bag of 25) MYR0.157 Quantity	Vishay	820Ω	0603 (1608M)	Thick Film	±1%	0.25W	±100ppm/K	AEC-Q200	-	-	-	-	CRCW	-55°C	+155°C	-
TE Connectivity, 0603 (1608M) Thin Film Surface Mount Fixed Resistor 0.1% 0.5W RS Stock No. 238-9855P Mfr. Part No. RA73F1J511RBTDF Each (Supplied on a Reel) MYR9.45 Quantity	TE Connectivity	-	0603 (1608M)	Thin Film	0.1%	0.5W	-	-	-	-	-	-	-	-	-	-
Panasonic 270kΩ, 0805 (2012M) Thick Film SMD Resistor ±5% 0.5W RS Stock No. 228-5173P Mfr. Part No. ERJHP6J274V Each (Supplied on a Reel) MYR0.192 Quantity	Panasonic	270kΩ	0805 (2012M)	Thick Film	±5%	0.5W	-	-	-	-	-	-	-	-	-	-
ROHM ESR10, 0805 (2012M) Thick Film Resistor ±5% 0.4W RS Stock No. 262-9526 Mfr. Part No. ESR10EZPJ2R4 Each (On a Tape of 100) MYR0.093 Quantity	ROHM	-	0805 (2012M)	Thick Film	±5%	0.4W	-	-	-	-	-	-	ESR10	-	-	-
ROHM, 0603 (1608M) Thick Film SMD Resistor ±1% 0.25W RS Stock No. 263-0869 Mfr. Part No. ESR03EZPF2203 Each (On a Tape of 100) MYR0.112 Quantity	ROHM	-	0603 (1608M)	Thick Film	±1%	0.25W	-	-	-	-	-	-	-	-	-	-
TE Connectivity RN73 4.02kΩ, 0603 (1608M) Thin Film SMD Resistor ±0.1% 0.063W RS Stock No. 472-919 Mfr. Part No. RN73C1J4K02B Each (In a Pack of 5) MYR9.676 Quantity	TE Connectivity	4.02kΩ	0603 (1608M)	Thin Film	±0.1%	0.063W	±10ppm/°C	-	-	-	-	-	RN73	-55°C	+125°C	-
Vishay, Tube Thick Film Resistor 5% 200W RS Stock No. 361-565 Mfr. Part No. ISOA200R122R0JT Each (In a Box of 30) MYR93.065 Quantity	Vishay	-	Tube	Thick Film	5%	200W	-	-	-	-	-	-	-	-	-	-