KTR03EZPJ621 Equivalent & Substitute Parts

Part Overview

The KTR03EZPJ621 is a 620 Ohm ±5% thick film chip resistor manufactured by Rohm Semiconductor, rated for 0.1W (1/10W) power dissipation in a 0603 (1608 Metric) surface mount package. This component is AEC-Q200 automotive qualified and designed for high voltage applications with an operating temperature range of -55°C to 155°C. The part is currently active in production with 836 units in stock. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing, improved availability, enhanced tolerance specifications, or compliance with specific supply chain constraints.

Key Parameters

Parameter	Value
Resistance	620 Ohms
Tolerance	±5%
Power Rating	0.1W (1/10W)
Package	0603 (1608 Metric)
Composition	Thick Film
Operating Temperature	-55°C to 155°C
Temperature Coefficient	±200ppm/°C
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the KTR03EZPJ621 are classified based on strict electrical and mechanical parameter alignment. All substitute candidates maintain the core specifications: 620 Ohm resistance value, 0603 package format, 0.1W power rating, thick film composition, and -55°C to 155°C operating temperature range. Substitution eligibility is determined by the following criteria:

Primary Substitution Criteria:

Resistance value: 620 Ohms (exact match required)
Package: 0603 (1608 Metric) surface mount
Power rating: 0.1W minimum
Composition: Thick film
Operating temperature range: -55°C to 155°C minimum
RoHS3 compliance
MSL 1 rating

Secondary Differentiation Parameters:

Tolerance: ±5% (primary specification) or ±1% (enhanced tolerance)
Temperature coefficient: ±200ppm/°C (primary) or ±100ppm/°C (improved stability)
Automotive qualification: AEC-Q200 (preferred for automotive applications)
Moisture resistance features (application-dependent)

Parts are grouped into upgrade categories when tolerance or temperature coefficient specifications exceed the original part requirements, and similar categories when specifications match or provide alternative sourcing options.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	AEC-Q200	Packaging	Inventory (Pcs)
KTR03EZPJ621	Rohm Semiconductor	620 Ω	±5%	0.1	±200	-55 to 155	Yes	Tape & Reel	836
CRCW0603620RJNEA	Vishay Dale	620 Ω	±5%	0.1	±200	-55 to 155	Yes	Tape & Reel	19520
ERJ-3EKF6200V	Panasonic Electronic Components	620 Ω	±1%	0.1	±100	-55 to 155	Yes	Tape & Reel	3200
ERJ-3GEYJ621V	Panasonic Electronic Components	620 Ω	±5%	0.1	±200	-55 to 155	Yes	Tape & Reel	139082
RC0603FR-07620RL	YAGEO	620 Ω	±1%	0.1	±100	-55 to 155	No	Cut Tape & Digi-Reel	219896
RC0603JR-07620RL	YAGEO	620 Ω	±5%	0.1	±100	-55 to 155	No	Cut Tape & Digi-Reel	169605
RMCF0603FT620R	Stackpole Electronics Inc	620 Ω	±1%	0.1	±100	-55 to 155	Yes	Tape & Reel	60692
RMCF0603JG620R	Stackpole Electronics Inc	620 Ω	±5%	0.1	±200	-55 to 155	Yes	Tape & Reel	11082
RMCF0603JT620R	Stackpole Electronics Inc	620 Ω	±5%	0.1	±200	-55 to 155	Yes	Tape & Reel	181235
CR0603-JW-621ELF	Bourns Inc.	620 Ω	±5%	0.1	±200	-55 to 155	No	Tape & Reel	2998

Engineering Selection Recommendations

Direct Equivalents (Identical Specifications): CRCW0603620RJNEA (Vishay Dale) and RMCF0603JG620R or RMCF0603JT620R (Stackpole Electronics Inc) provide direct electrical and mechanical equivalence to the KTR03EZPJ621. All three maintain ±5% tolerance, ±200ppm/°C temperature coefficient, AEC-Q200 automotive qualification, and identical operating temperature range. Selection among these options is driven by inventory availability and supply chain preferences. CRCW0603620RJNEA offers the highest inventory level at 19,520 units. RMCF0603JT620R provides 181,235 units in stock.

Enhanced Tolerance Alternatives (±1% Tolerance): ERJ-3EKF6200V (Panasonic), RMCF0603FT620R (Stackpole), and RC0603FR-07620RL (YAGEO) provide improved tolerance specifications at ±1% with reduced temperature coefficient of ±100ppm/°C. These parts are suitable for applications requiring tighter resistance accuracy. ERJ-3EKF6200V and RMCF0603FT620R maintain AEC-Q200 automotive qualification. RC0603FR-07620RL does not carry AEC-Q200 rating but offers moisture-resistant thick film composition and substantial inventory availability at 219,896 units.

Automotive-Qualified Substitutes: For applications requiring AEC-Q200 certification, eligible substitutes are CRCW0603620RJNEA, ERJ-3EKF6200V, ERJ-3GEYJ621V, RMCF0603FT620R, RMCF0603JG620R, and RMCF0603JT620R. All maintain the required automotive qualification standard.

Non-Automotive Applications: RC0603JR-07620RL (YAGEO) and CR0603-JW-621ELF (Bourns) are suitable for non-automotive applications. Both are ROHS3 compliant with MSL 1 rating. RC0603JR-07620RL offers ±5% tolerance with moisture-resistant composition and 169,605 units in stock.

Frequently Asked Questions (FAQ)

Q: Can I use a ±1% tolerance part as a substitute for the ±5% KTR03EZPJ621? A: Yes. A ±1% tolerance part meets or exceeds the electrical requirements of a ±5% specification. The tighter tolerance provides improved accuracy and is electrically compatible. Verify that other parameters (power rating, package, operating temperature) match application requirements.

Q: What is the difference between AEC-Q200 and non-AEC-Q200 parts? A: AEC-Q200 certification indicates the part has passed automotive-grade reliability testing and qualification standards. For automotive applications, AEC-Q200 rated parts are required. For consumer or industrial applications, non-AEC-Q200 parts are acceptable if other electrical specifications match.

Q: Are YAGEO RC0603 series parts compatible with the KTR03EZPJ621? A: RC0603FR-07620RL and RC0603JR-07620RL are electrically compatible in terms of resistance, power rating, package, and operating temperature. However, they lack AEC-Q200 automotive qualification. Use these parts only in non-automotive applications or where automotive qualification is not required.

Q: What does temperature coefficient ±100ppm/°C versus ±200ppm/°C mean for substitution? A: Temperature coefficient indicates how much the resistance value changes with temperature. ±100ppm/°C represents better stability across temperature extremes. Parts with ±100ppm/°C can substitute for ±200ppm/°C specifications without performance degradation. The reverse substitution is not recommended for precision applications.

Q: Can I mix different manufacturers' parts in the same design? A: Yes, provided all parts meet the required electrical specifications (620 Ohms, ±5% or better tolerance, 0.1W, 0603 package, -55°C to 155°C operating range). For automotive applications, ensure all selected parts carry AEC-Q200 qualification. Mixing manufacturers is common practice for supply chain flexibility.

Q: What is the significance of packaging format (Tape & Reel vs. Cut Tape)? A: Tape & Reel packaging is standard for high-volume automated assembly. Cut Tape & Digi-Reel packaging is suitable for lower-volume or manual assembly processes. Both formats contain identical components; the difference is in delivery and handling method. Verify your assembly equipment compatibility before selecting packaging format.

Q: Is the KTR03EZPJ621 still in production? A: Yes, the KTR03EZPJ621 is listed as Active product status. However, substitute parts with higher inventory levels (such as ERJ-3GEYJ621V with 139,082 units or RMCF0603JT620R with 181,235 units) may offer better long-term availability and shorter lead times.

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