New patent pending (SSWA,specially design for ECG) / More than 50 years of resistor manufacture experience

ECG cable acts as a necessary route between human body and ECG machine, there are two reasons to add a resistor inside the wire of ECG cable : 1. To avoid EMI/RFI between each party. 2. For safety to limit any current to the patient in case of some sort of equipment failure. The resistors are being widely used in industry applications, such as power supply, telecom, meter, medical, automotive and lighting. The strong R&D has allowed FIRSTOHM to develop new technology and obtain hundreds of patents, as well as develop specialty resistors, such as high voltage resistor, short circuit protection resistor, dual power resistor, high humidity resistor, etc. ISO9001/14001 certificated, award winning and patented design thin-film resistors, including anti-surge resistor, precision resistor, stability resistor, high voltage resistor, current sense resistor, automotive grade resistor, high power resistor, circuit protection resistor, fusible resistor and so forth.

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ECG cable market is dominated by KOA ceramic resistors

New patent pending (SSWA,specially design for ECG)

ECG cable acts as a necessary route between human body and ECG machine, there are two reasons to add a resistor inside the wire of ECG cable :
1. To avoid EMI/RFI between each party. 2. For safety to limit any current to the patient in case of some sort of equipment failure.


01 Jun, 2020

The protective component (SSWA) must have sufficient capability to stand energy of defibrillator pulses but also to stand possible ESD pulses without specification degradation while maintaining high reliability during the lifetime of the components.

★ Advantages of SSWAT (Superior Anti-Surge Wire Wound Axial Resistor)
. Special composite wire-wound structure enhances anti-surge capability. “Patent pending”
. Rated to withstand the defibrillation pulse tests described in ANSI/AAMI/IEC 60601-2-27
. Rated to withstand the ESD pulse(5KV) tests described in IEC 61000-4-2
(including both the 8kV contact discharge and the 15kV air discharge)
. Best quality and reliability for electrocardiogram(ECG) monitor (3/5/10 leads) applications.
. Reduced total BOM cost with stable production lead time.

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High-End MELF SMD Resistors Manufacturer - FIRSTOHM

Located in Taiwan since 1969, First resistor & condenser Co. Ltd. is a MELF type resistor manufacturer. ISO9001/14001 certificated, award winning and patented design thin-film resistors, including anti-surge resistor, precision resistor, stability resistor, high voltage resistor, current sense resistor, automotive grade resistor, high power resistor, circuit protection resistor, fusible resistor and so forth.

FIRSTOHM's resistors are being widely used in industry applications, such as power supply, telecom, meter, medical, automotive and lighting. The strong R&D has allowed FIRSTOHM to develop new technology and obtain hundreds of patents, as well as develop specialty resistors, such as high voltage resistor, short circuit protection resistor, dual power resistor, high humidity resistor, etc.

FIRSTOHM has been offering customers high quality MELF resistors since 1969, both with advanced technology and 50 years of experience, FIRSTOHM ensures each customer's demands are met.