RG2012N-393-C-T5 Equivalent & Substitute Parts

Part Overview

The RG2012N-393-C-T5 is a 39 kOhms ±0.25% thin film chip resistor in 0805 (2012 Metric) package rated for 0.125W (1/8W) power dissipation. This component is manufactured by Susumu and features anti-sulfur coating with automotive AEC-Q200 qualification. The part is currently obsolete, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility with existing designs.

Key Parameters

Parameter	Value
Resistance	39 kOhms
Tolerance	±0.25%
Power Rating	0.125W (1/8W)
Package	0805 (2012 Metric)
Composition	Thin Film
Temperature Coefficient	±10ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the RG2012N-393-C-T5 is determined by the following critical parameters:

Mandatory Compatibility Parameters:

Resistance value: 39 kOhms (exact match required)
Package type: 0805 (2012 Metric) (exact match required)
Power rating: 0.125W minimum (equal or higher acceptable)
Composition: Thin Film (required for temperature stability)
Temperature coefficient: ±10ppm/°C (required for precision applications)
Operating temperature range: -55°C ~ 155°C minimum (equal or extended acceptable)

Tolerance Consideration: The original part specifies ±0.25% tolerance. Substitute parts with tighter tolerances (±0.1% or ±0.05%) are electrically compatible and provide improved precision. Parts with looser tolerances are not acceptable substitutes.

Automotive Compliance: AEC-Q200 certification is maintained across all substitute options, ensuring automotive-grade reliability and qualification.

Packaging Format: All substitute parts are supplied in Tape & Reel (TR) format, compatible with automated assembly processes.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Op Temp Range (°C)	AEC-Q200	Product Status	Height Max (mm)
RG2012N-393-C-T5	Susumu	39 kΩ	±0.25%	0.125	±10	-55 ~ 155	Yes	Obsolete	0.50
RG2012N-393-B-T5	Susumu	39 kΩ	±0.1%	0.125	±10	-55 ~ 155	Yes	Active	0.50
RG2012N-393-W-T1	Susumu	39 kΩ	±0.05%	0.125	±10	-55 ~ 155	Yes	Active	0.50
RG2012N-393-W-T5	Susumu	39 kΩ	±0.05%	0.125	±10	-55 ~ 155	Yes	Active	0.50
ERA-6ARB393V	Panasonic Electronic Components	39 kΩ	±0.1%	0.125	±10	-55 ~ 155	Yes	Active	0.60
ERA-6ARW393V	Panasonic Electronic Components	39 kΩ	±0.05%	0.125	±10	-55 ~ 155	Yes	Active	0.60
RT0805WRB0739KL	YAGEO	39 kΩ	±0.05%	0.125	±10	-55 ~ 155	No	Active	0.60
TNPW080539K0BYEA	Vishay Dale	39 kΩ	±0.1%	0.26	±10	-55 ~ 175	Yes	Active	0.55

Engineering Selection Recommendations

Primary Substitutes (Susumu Series - Same Manufacturer):

RG2012N-393-B-T5 and RG2012N-393-W-T5 are direct Susumu alternatives with identical mechanical dimensions (0.50mm max height) and maintained AEC-Q200 automotive qualification. Both parts are in active production status. RG2012N-393-B-T5 provides ±0.1% tolerance, while RG2012N-393-W-T5 offers improved ±0.05% tolerance. Both are electrically and mechanically compatible with the obsolete RG2012N-393-C-T5.

Secondary Substitutes (Cross-Manufacturer Options):

ERA-6ARB393V (Panasonic) and ERA-6ARW393V (Panasonic) maintain AEC-Q200 certification and identical electrical specifications. Maximum seated height is 0.60mm compared to 0.50mm for Susumu parts. This 0.10mm height difference requires verification of PCB layout clearance in space-constrained applications. ERA-6ARB393V provides ±0.1% tolerance; ERA-6ARW393V provides ±0.05% tolerance.

Alternative Substitute (Non-Automotive Rated):

RT0805WRB0739KL (YAGEO) meets all electrical parameters with ±0.05% tolerance and 0.60mm maximum height. This part does not carry AEC-Q200 automotive qualification. Selection of this part is restricted to non-automotive applications or where automotive qualification is not required.

Enhanced Performance Option:

TNPW080539K0BYEA (Vishay Dale) provides higher power rating (0.26W versus 0.125W) and extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 155°C). AEC-Q200 certification is maintained. Maximum seated height is 0.55mm. This part is suitable for applications requiring thermal margin or higher power dissipation capability.

Frequently Asked Questions (FAQ)

Q: Can RG2012N-393-B-T5 directly replace RG2012N-393-C-T5?

A: Yes. Both parts share identical resistance (39 kOhms), package (0805), power rating (0.125W), temperature coefficient (±10ppm/°C), and operating range (-55°C ~ 155°C). RG2012N-393-B-T5 provides tighter tolerance (±0.1% versus ±0.25%), which is electrically compatible. Mechanical dimensions are identical (0.50mm max height). AEC-Q200 certification is maintained.

Q: What is the significance of tolerance differences between substitute parts?

A: Tolerance specifies the maximum deviation from the nominal 39 kOhms resistance value. The original part allows ±0.25% deviation (38.025 kOhms to 39.975 kOhms). Substitute parts with ±0.1% or ±0.05% tolerance provide tighter control within narrower ranges. Tighter tolerance substitutes are electrically compatible and suitable for precision circuit applications. Looser tolerance parts are not acceptable substitutes.

Q: Are Panasonic ERA-6A series parts compatible with Susumu RG series in PCB layout?

A: Electrical compatibility is confirmed. Mechanical compatibility requires verification of maximum seated height. Susumu RG2012N parts have 0.50mm maximum height; Panasonic ERA-6A parts have 0.60mm maximum height. This 0.10mm difference may affect PCB clearance in space-constrained designs. Verify PCB layout and component placement clearance before substitution.

Q: Why is TNPW080539K0BYEA listed as a substitute if it has different power rating?

A: TNPW080539K0BYEA maintains all critical electrical parameters (39 kOhms, ±0.1% tolerance, ±10ppm/°C temperature coefficient, -55°C ~ 155°C operating range, AEC-Q200 certification). The higher power rating (0.26W versus 0.125W) provides additional thermal margin and is electrically compatible. This part is suitable for applications where higher power dissipation capability or thermal headroom is beneficial.

Q: Is RT0805WRB0739KL suitable for automotive applications?

A: RT0805WRB0739KL meets all electrical specifications for the 39 kOhms 0805 resistor. However, this part does not carry AEC-Q200 automotive qualification. Selection of this part is restricted to non-automotive applications or designs where automotive qualification is not a requirement. For automotive applications, select parts with confirmed AEC-Q200 certification.

Q: What is the impact of operating temperature range differences?

A: The original RG2012N-393-C-T5 operates from -55°C to 155°C. TNPW080539K0BYEA extends this range to -55°C to 175°C. All other substitute parts maintain the -55°C to 155°C range. Extended temperature range provides additional margin for high-temperature applications. For standard applications within -55°C to 155°C, all substitutes are functionally equivalent.

Q: Can multiple substitute parts be used interchangeably in the same design?

A: All listed substitute parts are electrically compatible with the original RG2012N-393-C-T5 within the specified parameters. However, mechanical dimensions (particularly maximum seated height) vary between manufacturers. Verify PCB layout clearance for each substitute part before mixed-part assembly. Maintain consistent part selection within a single design to avoid assembly complications.

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