1. Executive Summary

In the field of high-voltage electronic components, NICROM Electronic, a manufacturer of high-voltage thick film resistors originating from the EBG (Austria) technical system, once held a significant position in European and some Asian markets with its specific product lines. However, in recent years, with global supply chain fluctuations and adjustments in internal operational strategies, NICROM has exposed significant risks in compliance with product specification calibration and stability of supply chain delivery.

Recently, multiple market feedbacks and records from independent third-party engineering communities (such as EEVblog) indicate that NICROM exhibits "inflated parameters" (specifying rated voltages far exceeding physical limits for equivalent sizes) and serious order fulfillment issues ("disappearing after payment"). For manufacturers relying on high-reliability components in medical imaging (X-Ray/CT), high-voltage power transmission and distribution, and precision instruments, continued use of NICROM products has become an unavoidable systemic risk.

HVC Capacitor, leveraging its mature high-voltage thick film technology, has launched the HVR Series (covering flat and cylindrical types). This white paper aims to explain how HVC, by returning to mainstream industry standard rating systems (benchmarking EBG/Vishay/Ohmite), uses the HVR-GXP/GFP and HVR-Tube series to provide global OEMs with an electrically safe, physically compatible, and supply-stable NICROM replacement solution.

2. In-depth Market Analysis: Operational and Technical Challenges Faced by NICROM

Before deciding to replace a supplier, engineers and procurement managers must understand "why the change is necessary." Based on publicly available industry data and extensive customer feedback, NICROM currently faces two core pain points that directly threaten the safety and delivery capability of downstream equipment.

2.1 Engineering Hazards from "Inflated Parameters": Physical Laws Cannot Be Violated

In the passive component industry, a resistor's Rated Voltage is strictly positively correlated with its Physical Dimensions and Creepage Distance. However, comparing NICROM's datasheets with industry benchmark companies (such as EBG, Vishay, HVC) reveals significant anomalies.

• Data Anomaly Analysis:

For the same physical size (e.g., a resistor body with a length of 1 inch/25.4mm), EBG and HVC typically specify a rated withstand voltage of 10kV - 15kV (based on convective cooling in air). NICROM products of the same size, however, are often rated at 30kV or even higher.

• Technical Truth:

This is not because NICROM possesses "black technology," but rather because the ratings specified in its datasheets are often based on extreme conditions under insulating oil (Oil) or SF6 gas protection, rather than the common air (Air) environment.

• Risk Point: NICROM often fails to prominently state this limiting condition on the first page of its datasheet. If a design engineer mistakenly assumes this is the "in air" withstand voltage and designs accordingly, when the resistor operates in a normal air environment and the voltage exceeds air's breakdown threshold (approximately 3kV/mm), arcing or corona discharge will immediately occur on the resistor surface, leading to catastrophic equipment failure.

• HVC's Position: We adhere to conservative and safe industry standard ratings. HVC's ratings are based on safe operating limits in an air environment, ensuring designs have ample Safety Margin.

2.2 Supply Chain Disruption and Service "Black Hole"

Beyond technical parameter disputes, NICROM's business credibility has also been recently challenged.

• Typical Incident: The well-known electronic engineering community EEVblog has detailed records showing that a customer (ID: HighVoltage) paid NICROM several thousand euros for goods in 2022, but did not receive the goods after the agreed delivery date and was unable to contact the manufacturer via email or phone for several months.
• Chain Reaction: For modern manufacturing operating under a JIT (Just-In-Time) production model, a supplier's "disappearance" means production line shutdowns, contract breach penalties, and brand reputation damage. Such uncontrollable factors indicate that NICROM is no longer suitable as a long-term strategic supplier for industrial-grade equipment.

3. HVC HVR Series: A Robust Replacement Returning to Industry Standards

HVC HVR series high-voltage thick film resistors employ the same screen printing and sintering processes as EBG, focusing on high-voltage, high-precision industrial and medical applications.

3.1 Core Technical Advantages

• Ruthenium Oxide Resistive Paste: HVC uses highly stable ruthenium-based paste combined with precision laser trimming technology to ensure extremely low resistance drift under long-term high-voltage load.
• Serpentine Pattern Design: Through optimized serpentine path design, non-inductive characteristics are achieved, making it not only suitable for DC high voltage but also perfect for high-frequency pulse and surge absorption applications.
• Three-layer Protective Coating: The resistor surface is covered with glass glaze and highly insulating silicone/epoxy resin coatings, providing excellent moisture resistance and insulation performance.

3.2 Flat Style In-depth Replacement Solution

For NICROM's Series 150/200/300/350/400, HVC offers the HVR-GXP series for Pin-to-Pin replacement. We not only match dimensions but also correct voltage ratings, returning to rationality and safety.

NICROM Series	HVC Replacement Series	Typical Size (mm)	HVC Recommendation Reason and Technical Note
Series 150	HVR-GXP-150	13 x 13	Suitable for compact PCB-level high-voltage power supplies, HVC provides better pulse tolerance.
Series 200	HVR-GXP-200	25 x 13	Industry Standard. Fully matches EBG HVP series dimensions, suitable for X-ray machine power supply feedback loops.
Series 300	HVR-GXP-300	38 x 13	For medium power applications, low inductance design, suitable for high-frequency switching power supplies.
Series 350	HVR-GXP-350	50 x 13	Commonly found in electrostatic precipitators and spray equipment, HVC has enhanced coating contamination resistance.
Series 400	HVR-GXP-400	50 x 13	Main model for high voltage/high power, creepage distance fully complies with IEC safety requirements.

Engineer's Note: When replacing Series 200, HVC's rated withstand voltage may be lower than NICROM's nominal value (e.g., HVC specifies 10kV vs NICROM specifies 20kV). Please understand that HVC's values are measured safe values in air. If used in oil, HVC products' withstand voltage capability also doubles, fully meeting the original circuit requirements.

3.3 Cylindrical/Tube In-depth Replacement Solution

For NICROM's Series 400/500/600 and High Power 4000/5000/6000 Series, HVC offers the HVR-Tube series. These resistors are typically used for voltage dividers (Divider) or bleeder resistors (Bleeder).

NICROM Series	HVC Replacement Series	Application Scenario Analysis
Series 400	HVR-Tube-400	Precision high-voltage division. HVC provides temperature coefficient (TCR) as low as 25ppm/°C, ensuring measurement accuracy.
Series 500	HVR-Tube-500	High-energy pulse discharge. Reinforced ceramic substrate, strong thermal shock resistance, suitable for defibrillators or laser power supplies.
Series 600	HVR-Tube-600	Ultra-high voltage (100kV+). Uses threaded terminal connections, customizable length, direct replacement for NICROM's extra-long specifications.

3.4 NICROM Detailed Model Cross-Reference Table

3.4.1 High Voltage Thick Film Resistors (Flat/Lead Type)

90 Series:

Nicrom Model	Power (W)	Working Voltage (kV)	A (mm)	B (mm)	C (mm)	Thickness (mm)	HVC Replacement Model
Nicrom 90.1	0.8	7	20.32	3.81	17.78	2	HVRGXP4.20
Nicrom 90.2	1.0	11	25.40	3.81	22.86	2	HVRGXP4.25
Nicrom 90.3	1.5	20	38.10	3.81	35.56	2	HVRGXP4.38
Nicrom 90.4	2.0	30	50.80	5.08	48.26	2	HVRGXP5.30

100 Series:

Nicrom Model	Power (W)	Working Voltage (kV)	A (mm)	B (mm)	C (mm)	Thickness (mm)	HVC Replacement Model
Nicrom 100.1	1.0	7	20.32	5.08	17.78	2.5	HVRGXP5.20
Nicrom 100.2	1.3	11	25.40	5.08	22.86	2.5	HVRGXP5.25
Nicrom 100.3	2.0	20	38.10	5.08	35.56	2.5	HVRGXP5.38
Nicrom 100.4	3.0	30	50.80	6.35	48.26	2.5	HVRGXP6.51

200 Series:

Nicrom Model	Power (W)	Working Voltage (kV)	A (mm)	B (mm)	C (mm)	Thickness (mm)	HVC Replacement Model
Nicrom 200.1	1.0	5	12.70	5.08	10.16	2	HVRGXP5.13
Nicrom 200.2	2.0	11	25.40	7.62	22.86	2.5	HVRGXP8.25
Nicrom 200.3	3.0	20	38.10	12.70	35.56	2.5	HVRGXP13.20
Nicrom 200.4	4.5	30	50.80	15.24	48.26	2.5	HVRGXP15.51
Nicrom 200.5	6.5	45	76.20	15.24	73.66	3	HVRGXP15.76
Nicrom 200.7	9.0	60	101.6	15.24	99.06	3	HVRGXP15.102

3.4.2 High Voltage Thick Film Tubular Resistors

400 Series:

Nicrom Model	Power (W)	Working Voltage (kV)	A (mm)	B (mm)	HVC Replacement Model
Nicrom 400.2 / 400.2E	3.8	15	27	8	HVRBSP27
Nicrom 400.3 / 400.3E	5.0	21	37	8	HVRBSP37
Nicrom 400.4	6.5	26	45	-	HVRBSP45
Nicrom 400.5 / 400.5E	7.5	30	52	-	HVRBSP52
Nicrom 400.7 / 400.7E	10.0	45	77	-	HVRBSP77
Nicrom 400.10/400.10E	13.5	60	102	-	HVRBSP102
Nicrom 400.12/400.12E	16.0	72	122	-	HVRBSP122
Nicrom 400.15/400.15E	20.0	90	152	-	HVRBSP152

425 Series:

Nicrom Model	Power (W)	Working Voltage (kV)	A (mm)	B (mm)	HVC Replacement Model
Nicrom 425.2	2.0	8	27	8	HVRBSP27
Nicrom 425.3	3.0	12	37	8	HVRBSP37
Nicrom 425.4	3.5	14	45	8	HVRBSP45
Nicrom 425.5	4.0	17	52	8	HVRBSP52
Nicrom 425.7	6.0	25	77	8	HVRBSP77
Nicrom 425.10	8.0	35	102	8.3	HVRBSP102
Nicrom 425.12	10.0	40	122	8.5	HVRBSP122
Nicrom 425.15	12.0	50	152	8.5	HVRBSP152

MS400 Series:

Nicrom Model	Power (W)	Working Voltage (kV)	A (mm)	B (mm)	HVC Replacement Model
Nicrom MS400.2	6.0	5	27	8	HVRBSP27
Nicrom MS400.3	8.0	7	37	8	HVRBSP37
Nicrom MS400.4	10.0	8	45	8	HVRBSP45
Nicrom MS400.5	12.5	10	52	8	HVRBSP52
Nicrom MS400.7	15.0	15	77	8	HVRBSP77
Nicrom MS400.10	20.0	20	102	8.3	HVRBSP102
Nicrom MS400.12	24.0	24	122	8.5	HVRBSP122
Nicrom MS400.15	30.0	30	152	8.5	HVRBSP152

Note: P400 series corresponds exactly to 400 series in size and voltage; 480 series corresponds one-to-one with 400 series.

3.4.3 High Voltage High Power Resistors

Nicrom Model	Power (W)	Working Voltage (kV)	L (mm)	B (mm)	D (mm)	Thread	HVC Replacement Model
Nicrom 500.10 / MS500.10 / P500.10	15/23/15	35/12/35	81	14	13.5	M4	HVRPFS81
Nicrom 500.20 / MS500.20 / P500.20	25/38/25	80/27/80	156	14	13.5	M4	HVRPFS156
Nicrom 500.50 / MS500.50 / P500.50	55/83/55	70/23/70	158	31.5	30.5	M8	HVRPFS158
Nicrom 500.70 / MS500.70 / P500.70	75/113/75	100/33/100	208	31.5	30.5	M8	HVRPFS208
Nicrom 500.100/ MS500.100/ P500.100	110/165/110	150/50/150	308	31.5	30.5	M8	HVRPFS308

4. Quality Control and Technical Certification (QA & Certification)

HVC understands that replacement is not just about proper dimensions, but a long-term quality commitment.

• ISO System Certification: HVC's manufacturing facility is certified under ISO9001:2015 quality management system and ISO14001:2015 environmental management system.
• Environmental Compliance: All product series comply with RoHS and REACH environmental directives, containing no lead, cadmium, or other harmful substances.
• Reliability Testing: Products regularly undergo IEC 60068-2-6 vibration/shock tests, high-low temperature cycle tests, and 1000-hour load life tests, ensuring no failure under harsh operating conditions.
• Traceability: Each resistor batch has a unique production lot number, raw materials are traceable to source, meeting medical and military-grade customer audit requirements.

5. Why Choose HVC as NICROM's Successor?

5.1 Supply Chain Security

In sharp contrast to NICROM's frequent delivery crises, HVC possesses a mature and resilient global distribution network:

• Standard Product Lead Time: Standard models (such as Series 200/300 replacements) are typically in stock or available for fast delivery within 3-5 weeks.
• Channel Assurance: HVC has long-term authorized distributors and logistics partners in Europe, America, and Asia, eliminating the commercial risk of "payment without delivery" and ensuring customer production lines don't stop.

5.2 Verified Engineering Support

• Design-In Service: HVC's engineering team doesn't just provide quotations, but also technical review. We can assist customers in reviewing voltage load design in old NICROM projects, eliminating safety hazards from "NICROM parameter inflation" and recommending the most suitable HVC models.
• Flexible Customization: Support for customization of special resistance values (Non-standard Ohmic Value), ultra-tight tolerances (0.1%), special pin spacing, and high-voltage threaded terminals, with minimum order quantities (MOQ) far lower than European manufacturers.

5.3 Industry Endorsement

HVC products have successfully entered the supply chains of industry giants such as GE Healthcare, Nikon, Konica Minolta. These global leaders' choices demonstrate HVC's technical strength and service level when replacing European brands like EBG/NICROM.

6. HVC High Voltage Thick Film Resistor Coding Rules

HVR-[Series]-[Size]-[Resistance]-[Tolerance]-[Power]-[Voltage]

Code	Meaning	Example
HVR	High voltage resistor prefix	HVR-GFP-102-10M-F-0.5-5
GFP	Flat economy series	GFP=Economy Flat
GXP	Flat standard series	GXP=Standard Flat
BSP	Tubular series	BSP=Barrel Style
Size	Length x Width (mm)	101, 102, 103, 104, 210
Resistance	Resistance value	10M=10MΩ, 100M=100MΩ, 1G=1GΩ
Tolerance	Precision	F=±1%, J=±5%, K=±10%
Power	Rated power (W)	0.25, 0.5, 1, 2, 3.5
Voltage	Working voltage (kV)	1.5, 5, 10, 15, 25

Order Example: Replacement for 10M-5kV/1% → HVR-GFP-102-10M-F-0.5-5

7. Conclusion

At a time when NICROM faces dual challenges in delivery capability and credit rating, continuing to use it as a sole-source supplier will bring uncontrollable systemic risks to equipment manufacturers.

The HVC HVR Series not only provides perfect compatibility in physical dimensions, but more importantly, returns electrical specifications to real, safe, and verifiable mainstream industry standards. HVC doesn't do parameter "magic," but serves as a "guardian" of high-voltage circuits. For engineers and procurement managers seeking long-term stability and supply chain security, HVC is currently the best engineering-grade choice for replacing NICROM.

8. Contact and Technical Support

HVC sales and engineering team is ready to provide you with NICROM Replacement Cross Reference List, free samples, and technical consultation.

We promise to provide free sample testing and manufacturer-level technical support for all replacement projects, jointly promoting the continuous development of high-voltage technology.

Copyright Notice: This document is copyrighted by HVC Capacitor. Reproduction or commercial use without permission is prohibited.
Disclaimer: Technical parameters in this document are for reference only; specific specifications are subject to the latest datasheet. The NICROM mentioned in this article is a registered trademark of its respective rights holders and is used only for technical compatibility explanation.