Resistors | What series does TA-Ioffer in its resistors?
TA-I Technology was founded in 1989, headquartered in Taoyuan, Taiwan, China. It is the world's second largest SMD thick film chip resistor manufacturer and supplier. The company has a monthly production capacity of over 25 billion chip resistors, with production bases spread across Taiwan, mainland China (Dongguan, Qingxi, Suzhou), Malaysia, Indonesia, and Vietnam. TA-I Technology has obtained multiple international certifications including TS16949, ISO9001, ISO14001, OHSAS18001, UL248-14, and SONY GP. Its
I. Brand Overview
TA-I Technology was founded in 1989, headquartered in Taoyuan, Taiwan, China. It is the world's second largest SMD thick film chip resistor manufacturer and supplier. The company has a monthly production capacity of over 25 billion chip resistors, with production bases spread across Taiwan, mainland China (Dongguan, Qingxi, Suzhou), Malaysia, Indonesia, and Vietnam. TA-I Technology has obtained multiple international certifications including TS16949, ISO9001, ISO14001, OHSAS18001, UL248-14, and SONY GP. Its products are widely used in 3C consumer electronics, automotive electronics, industrial control, communication equipment, new energy, and AIoT fields.
TA-I resistors are renowned for "high quality, complete series, and competitive pricing." The company has established long-term stable cooperative relationships with well-known domestic and international enterprises such as Sony, Yamaha, Ricoh, Foxconn, Lite-On, Panasonic, Delta, BenQ, ASUS, Gigabyte, LG, TCL, and Hisense.
II. Product Part Number Rules Analysis
TA-I resistor's product numbering system is clear and standardized. Taking SMD resistors as an example, the model typically consists of the following parts:
[Series Code][Package Size][Tolerance][TCR][Power Rating][Resistance Value][Packaging Type]
For example: RM06FTN1004
-
RM: General thick film chip resistor series
-
06: 0603 package (1608 metric)
-
F: Tolerance ±1%
-
T: TCR ±100ppm/°C
-
N: Standard power rating
-
1004: Resistance value 100×10⁴Ω = 1MΩ
Alloy current sensing resistor example: RLM25FECR002
-
RLM: Metal foil current sensing resistor series
-
25: 2512 package
-
F: Tolerance ±1%
-
E: Embossed tape packaging
-
C: Power 1W
-
R002: Resistance value 2mΩ
III. Core Product Series Detailed Analysis
(A) Thick Film Chip Resistor Series
1. RM Series — General Purpose Thick Film Chip Resistors
The RM series is TA-I resistor's foundational product line, manufactured using mature thick film technology. Metal glass paste is printed on ceramic substrates and then sintered at high temperatures. This series covers full size specifications from 01005 to 2512, with resistance ranges extending from 1Ω to 20MΩ, tolerance from ±0.1% to ±5%, and power ratings from 1/32W to 1W.
In terms of product characteristics, the RM series offers wide resistance range, excellent cost-performance ratio, and stable supply. Its temperature coefficient typically ranges from 100 to 200ppm/°C, with an operating temperature range of -55°C to +155°C, compliant with RoHS environmental requirements. This series is suitable for current limiting, voltage dividing, and signal conditioning applications in general consumer electronics, home appliances, and office equipment.
2. RMH Series — High Power Thick Film Chip Resistors
The RMH series optimizes heat dissipation structure and material formulation based on the RM series, achieving higher power density. Under the same package size, the RMH series' rated power is 20% to 50% higher than the standard RM series. For example, the 2512 package can reach over 2W. This series is particularly suitable for space-constrained but high-power demand applications such as LED driver power supplies and switching power supply secondary sides.
3. RH Series — High Voltage Thick Film Chip Resistors
The RH series is specifically designed for high voltage applications, mainly offering 1206 and 2010 packages. By optimizing electrode structure and resistor body design, the RH series' working voltage is significantly higher than ordinary thick film resistors of the same size, reaching over 500V. This series features high stability and low leakage current, suitable for power supply high voltage dividing, voltage detection, medical equipment, and other applications.
4. RMS/RMSA Series — Anti-Sulfuration Thick Film Chip Resistors
With increasing industrial pollution and higher automotive electronics integration, sulfuration corrosion has become an important cause of resistor failure. The RMS series adopts special electrode structure and protective layer design, adding a second electrode layer on the front electrode to form an interlaced structure with the resistance layer and protective layer, effectively extending the sulfuration gas intrusion path. This series has passed AEC-Q200 automotive grade certification (RMSA), suitable for industrial control systems, automotive instruments, communication base stations, optical modules, and other high-pollution environments.
5. RAS/RASS Series — Surge Resistant Thick Film Chip Resistors
The RAS series is developed for surge impact protection needs at power input terminals. By optimizing resistor body materials and structure, it significantly improves anti-pulse capability. The RASS series simultaneously features both surge resistance and anti-sulfuration characteristics. These series play important roles in lightning protection, power surge absorption, motor starting, and other scenarios.
6. RMF/RMTF Series — Automotive Grade Thick Film Chip Resistors
The RFM and RMTF series are specifically designed for automotive electronics applications, passing AEC-Q200 certification to meet automotive grade reliability requirements. Products maintain stable electrical performance under harsh environments such as high temperature, high humidity, and vibration, widely used in engine control units, body electronics, ADAS systems, and more.
(B) Thin Film Chip Resistor Series
1. RB Series — Standard Thin Film Chip Resistors
The RB series uses vacuum sputtering process to deposit nickel-chromium alloy thin films on ceramic substrates, with film thickness typically less than 1μm. Compared to thick film resistors, thin film resistors have more uniform resistor body structure, therefore offering higher precision, lower noise, and smaller temperature coefficient.
The RB series achieves precision up to ±0.1%, temperature coefficient as low as ±25ppm/°C, with an operating temperature range of -55°C to +155°C. Its excellent long-term stability and low noise characteristics make it an ideal choice for precision instruments, medical equipment, high-end audio equipment, and test and measurement instruments.
2. RBP Series — Precision Thin Film Chip Resistors
The RBP series is TA-I resistor's high-end thin film product line, achieving precision up to ±0.01% and temperature coefficient as low as ±5ppm/°C. Through precision laser trimming processes and strict process control, the RBP series achieves extremely high resistance precision and very low temperature drift. This series is suitable for precision amplifier circuits, high-precision measurement equipment, aerospace electronics, and other fields with extremely demanding performance requirements.
3. RBS Series — Anti-Sulfuration Thin Film Chip Resistors
The RBS series combines the high precision characteristics of thin film resistors with anti-sulfuration protection, maintaining low temperature coefficient and high precision while possessing the ability to resist sulfur-containing gas corrosion. This innovative design fills a market gap, meeting the application needs of precision industrial control, high-end communication equipment, and other fields that require both high precision and operate in polluted environments.
(C) Alloy Current Sensing Resistor Series
Alloy current sensing resistors are a niche product line that TA-I resistors have focused on developing in recent years, mainly used for current sampling in battery management systems, power management, and motor control fields.
1. RLM Series — Metal Foil Current Sensing Resistors
The RLM series uses manganese-copper (MnCu) or nickel-copper (NiCu) alloy materials, manufactured through precision metal foil processes. This series offers 1206, 2010, 2512 packages, power ratings from 1W to 3W, resistance range from 0.25mΩ to 50mΩ, temperature coefficient from 75 to 275ppm/°C, and tolerance from ±1% to ±5%.
The RLM series has passed AEC-Q200 automotive grade certification. Its low resistance, low TCR, and high power characteristics make it very suitable for large current detection scenarios such as new energy vehicle BMS, charging piles, and inverters. The 2512 package RLM25 series has a minimum resistance value of 0.25mΩ, capable of accurately detecting currents at the hundreds of ampere level.
2. RLP Series — High Power Alloy Current Sensing Resistors
The RLP series is a high-power extension of the RLM, offering 2010, 2512, 4527 packages, power ratings from 1W to 5W, resistance range from 1mΩ to 910mΩ, and temperature coefficient as low as 50ppm/°C. This series adopts special heat dissipation structure design, capable of withstanding greater power loads in small volumes, suitable for industrial power supplies, high-power motor drives, and other applications.
3. RLN Series — Long Electrode Alloy Current Sensing Resistors
The RLN series adopts special long electrode packages such as 0612 and 3720, utilizing extended electrode structures to increase heat dissipation area, achieving the goal of passing large currents in small volumes. This series has a resistance range from 1mΩ to 30mΩ, temperature coefficient of 100ppm/°, with excellent current carrying capacity while maintaining compact dimensions.
4. RLF Series — Four-Terminal Alloy Current Sensing Resistors
The RLF series uses 0612 package, offering resistance range from 0.5mΩ to 5mΩ, adopting four-terminal Kelvin connection method. This design separates current terminals and sense terminals, completely eliminating the influence of lead and contact resistance on measurement precision, making it the preferred solution for high-precision current sampling.
5. RLH Series — Metal Film High Power Chip Resistors
The RLH series uses metal film processes, offering full size specifications from 0402 to 2512, power from 0.125W to 2W, resistance range from 0.1Ω to 0.91Ω, temperature coefficient from ±100 to ±200ppm/°C, and operating temperature from -55°C to +155°C. This series combines the precision of metal film with the power characteristics of thick film, suitable for power management applications such as switching power supplies, DC-DC converters, battery packs, and chargers.
(D) Chip Resistor Array Series
TA-I resistors offer various chip resistor array products:
-
CN Series: Thick film convex resistor arrays, suitable for general signal line terminal matching
-
CNC Series: Thick film concave resistor arrays, facilitating automated mounting
-
CNCS/CNSA Series: Anti-sulfuration resistor arrays, suitable for harsh environments
(E) Leaded Resistor Series
TA-I resistor's leaded product line covers various types including carbon film, metal film, metal oxide film, wirewound, and cement, with power ratings from 1/8W to tens of watts, meeting the needs of different application scenarios.
(F) Protection Components
In addition to resistor products, TA-I Technology also provides Max Guard ESD suppressors, chip fuses (CF/CFS/CP/CPS series), NTC thermistors, multilayer chip varistors (MVE/MVL series), and other circuit protection components, forming a complete passive component solution.
IV. Product Advantage Analysis
-
Scale Advantage: As the world's second largest chip resistor manufacturer with monthly production exceeding 25 billion units, possessing strong supply capability and cost control ability.
-
Technology Advantage: Over thirty years of resistor R&D and manufacturing experience, mastering thick film, thin film, alloy, and other core processes, continuously investing in technological innovation.
-
Quality Advantage: Having obtained multiple international certifications, product consistency and reliability recognized by global customers.
-
Complete Series: From general purpose to special purpose, from consumer grade to automotive grade, from milliohm to megaohm, providing one-stop resistor selection solutions.
-
Production Layout: Taiwan R&D center coordinated with mainland China and Southeast Asia production bases, achieving rapid response and flexible delivery.
V. Product Application Markets
TA-I resistor products cover the following major markets:
-
Consumer Electronics: Smartphones, tablets, laptops, LCD TVs, set-top boxes, digital cameras, and other 3C products.
-
Automotive Electronics: BMS battery management systems, motor controllers, onboard chargers, ADAS, body electronics, etc.
-
Industrial Control: PLC, frequency converters, servo drives, industrial automation equipment, etc.
-
Communication Equipment: 5G base stations, optical modules, routers, switches, etc.
-
New Energy: Photovoltaic inverters, energy storage systems, charging piles, wind power converters, etc.
-
Medical Electronics: Precision diagnostic equipment, monitoring instruments, implantable medical devices, etc.
-
AIoT: Smart homes, wearable devices, drones, robots, and other emerging fields.
VI. Market Positioning and Competitive Landscape
In the global resistor market, TA-I resistors are positioned as a comprehensive supplier with "complete series, high quality, and competitive pricing." Together with Yageo, they are recognized as the two major resistor giants in Taiwan, with significant scale advantages in the thick film chip resistor field.
Compared to Japanese brands (such as KOA, Rohm, Panasonic) with their high-end positioning, TA-I resistors offer better price competitiveness while maintaining quality; compared to mainland Chinese brands, TA-I resistors have first-mover advantages in technology accumulation, product consistency, and automotive certifications.
In the alloy current sensing resistor field, TA-I resistors face competitors such as Walsin, Ralec, and Yageo, forming differentiated competitive advantages through the RLM, RLP, RLN, and other series, particularly excelling in automotive grade products and ultra-high power products.
VII. Selection Recommendations
-
General Consumer Electronics: Prioritize the RM series thick film chip resistors for excellent cost-performance ratio and stable supply.
-
Precision Instruments/Medical Equipment: Choose RB/RBP series thin film resistors for high precision, low noise, and good stability.
-
Automotive Electronics: Choose RMF/RMTF/RBA and other AEC-Q200 certified series to ensure automotive grade reliability.
-
High Pollution Environments: Choose RMS/RBS/RHS and other anti-sulfuration series to extend product service life.
-
Current Sensing Applications: Based on power and precision requirements, choose RLM (standard power), RLP (high power), RLF (four-terminal high precision), and other alloy resistor series.
-
Power Surge Protection: Choose RAS/RASS surge resistant series to enhance system anti-interference capability.
VIII. Summary
As a global leading resistor manufacturer, TA-I Technology occupies an important position in the global passive component market with its complete product line, stable quality, strong production capacity, and continuous technological innovation. From general purpose thick film resistors to high-precision thin film resistors, from milliohm-level alloy sampling resistors to high-voltage anti-sulfuration special resistors, TA-I resistors can provide suitable solutions for various electronic applications. With the rapid development of markets such as new energy vehicles, 5G communications, industrial automation, and AIoT, TA-I resistors are expected to continue steady growth, providing solid component support for the global electronics industry.