RG2012P-4422-B-T1 Equivalent & Substitute Parts

Part Overview

The RG2012P-4422-B-T1 is a 44.2 kOhms ±0.1% thin film chip resistor in 0805 (2012 Metric) package rated for 0.125W (1/8W) power dissipation. Manufactured by Susumu, this component features anti-sulfur coating and automotive AEC-Q200 qualification, suitable for high-reliability applications across -55°C to 155°C operating temperature range.

The RG2012P-4422-B-T1 is classified as obsolete. Equivalent and substitute parts are available from multiple manufacturers with identical or enhanced electrical and mechanical specifications, ensuring design continuity and supply chain flexibility.

Key Parameters

Parameter	Value
Resistance	44.2 kOhms
Tolerance	±0.1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thin Film
Temperature Coefficient	±25ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Features	Anti-Sulfur, Automotive AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the RG2012P-4422-B-T1 is determined by the following critical parameters:

Primary Substitution Criteria:

Resistance value: 44.2 kOhms (exact match required)
Tolerance: ±0.1% or tighter (±0.05% acceptable as upgrade)
Package: 0805 (2012 Metric) form factor
Power rating: 0.125W minimum (higher ratings acceptable)
Composition: Thin film technology
Operating temperature range: Must encompass -55°C to 155°C or equivalent

Secondary Compatibility Factors:

Temperature coefficient: ±25ppm/°C or better
RoHS3 compliance
Moisture sensitivity level: 1 (Unlimited)
Surface mount termination: 2-terminal configuration

Substitute parts are grouped into two categories:

Direct Substitutes (Identical Specifications): Parts with matching resistance, tolerance (±0.1%), power rating (0.125W), temperature coefficient (±25ppm/°C), and operating temperature range (-55°C to 155°C). These include RG2012P-4422-B-T5, ERA-6AEB4422V, MCU08050D4422BP500, and RT0805BRD0744K2L.

Upgrade Substitutes (Enhanced Specifications): Parts with improved tolerance (±0.05%), lower temperature coefficient (±10ppm/°C), or higher power ratings (0.25W or 0.26W). These include RG2012N-4422-B-T5, RG2012N-4422-W-T1, RG2012P-4422-W-T5, 6-2176093-2, and TNPW080544K2BEEA.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	AEC-Q200	Product Status
RG2012P-4422-B-T1	Susumu	44.2 kΩ	±0.1%	0.125	±25	-55 ~ 155	Yes	Obsolete
RG2012P-4422-B-T5	Susumu	44.2 kΩ	±0.1%	0.125	±25	-55 ~ 155	Yes	Active
RG2012N-4422-B-T5	Susumu	44.2 kΩ	±0.1%	0.125	±10	-55 ~ 155	Yes	Active
RG2012N-4422-W-T1	Susumu	44.2 kΩ	±0.05%	0.125	±10	-55 ~ 155	Yes	Active
RG2012P-4422-W-T5	Susumu	44.2 kΩ	±0.05%	0.125	±25	-55 ~ 155	Yes	Active
ERA-6AEB4422V	Panasonic Electronic Components	44.2 kΩ	±0.1%	0.125	±25	-55 ~ 155	Yes	Active
MCU08050D4422BP500	Vishay Beyschlag/Draloric/BC Components	44.2 kΩ	±0.1%	0.125	±25	-55 ~ 125	No	Active
RT0805BRD0744K2L	YAGEO	44.2 kΩ	±0.1%	0.125	±25	-55 ~ 155	No	Active
6-2176093-2	TE Connectivity Passive Product	44.2 kΩ	±0.1%	0.25	±25	-55 ~ 155	No	Active
TNPW080544K2BEEA	Vishay Dale	44.2 kΩ	±0.1%	0.26	±25	-55 ~ 175	Yes	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

Select RG2012P-4422-B-T5 as the primary equivalent. This Susumu part maintains identical electrical and mechanical specifications to the obsolete RG2012P-4422-B-T1, including ±0.1% tolerance, 0.125W power rating, ±25ppm/°C temperature coefficient, and -55°C to 155°C operating range. Both parts carry AEC-Q200 automotive qualification and ROHS3 compliance. The RG2012P-4422-B-T5 is currently in active production status with 938 units in stock.

ERA-6AEB4422V (Panasonic) and RT0805BRD0744K2L (YAGEO) provide functionally equivalent alternatives with identical electrical specifications and 0805 package compatibility. ERA-6AEB4422V includes AEC-Q200 qualification; RT0805BRD0744K2L does not. Both support the full -55°C to 155°C temperature range.

For Enhanced Performance (Upgrade Substitutes):

RG2012N-4422-B-T5 (Susumu) offers improved temperature coefficient of ±10ppm/°C while maintaining all other specifications. This upgrade reduces temperature-induced resistance drift and is suitable for precision applications requiring tighter thermal stability.

RG2012N-4422-W-T1 and RG2012P-4422-W-T5 provide ±0.05% tolerance, doubling the tolerance precision over the original specification. These upgrades are applicable where tighter resistance tolerance is required without changing package or power rating.

TNPW080544K2BEEA (Vishay Dale) combines ±0.1% tolerance with 0.26W power rating and extended operating temperature to 175°C. This part includes AEC-Q200 qualification and anti-sulfur coating, making it suitable for high-reliability automotive applications with elevated thermal requirements.

For Applications with Relaxed Temperature Requirements:

MCU08050D4422BP500 (Vishay) operates to 125°C maximum, which is 30°C below the original specification. This part is suitable only for applications where the upper operating temperature does not exceed 125°C. It lacks AEC-Q200 qualification.

For Higher Power Dissipation:

6-2176093-2 (TE Connectivity) provides 0.25W power rating in the same 0805 package. This part is applicable where circuit design requires higher power handling capability while maintaining the 44.2 kOhms resistance value and ±0.1% tolerance.

Frequently Asked Questions (FAQ)

Q: Can RG2012P-4422-B-T5 be used as a direct replacement for RG2012P-4422-B-T1?

A: Yes. Both parts share identical electrical specifications: 44.2 kOhms ±0.1%, 0.125W power rating, ±25ppm/°C temperature coefficient, and -55°C to 155°C operating range. Both are 0805 package, thin film composition, AEC-Q200 qualified, and ROHS3 compliant. The primary difference is product status: RG2012P-4422-B-T1 is obsolete while RG2012P-4422-B-T5 is active production.

Q: What is the difference between RG2012P and RG2012N series?

A: The RG2012N series features a lower temperature coefficient of ±10ppm/°C compared to ±25ppm/°C in the RG2012P series. This means RG2012N parts exhibit less resistance change across the operating temperature range, providing superior thermal stability. Both series maintain identical resistance values, tolerance options, and power ratings in the 0805 package.

Q: Can I use ERA-6AEB4422V or RT0805BRD0744K2L instead of Susumu parts?

A: Yes, both are functionally equivalent. ERA-6AEB4422V (Panasonic) and RT0805BRD0744K2L (YAGEO) match the RG2012P-4422-B-T1 in resistance, tolerance, power rating, temperature coefficient, and operating temperature range. ERA-6AEB4422V includes AEC-Q200 qualification; RT0805BRD0744K2L does not. Both are 0805 package thin film resistors with ROHS3 compliance.

Q: What does the tolerance designation mean (±0.1% vs ±0.05%)?

A: Tolerance specifies the maximum deviation of actual resistance from the nominal 44.2 kOhms value. ±0.1% tolerance allows deviation up to ±0.0442 kOhms (±44.2 ohms). ±0.05% tolerance tightens this to ±0.0221 kOhms (±22.1 ohms). Tighter tolerance (±0.05%) is required for precision analog circuits, measurement equipment, and reference networks where resistance accuracy directly affects circuit performance.

Q: Why does TNPW080544K2BEEA have a higher power rating (0.26W) in the same 0805 package?

A: Power rating depends on thermal design and material composition. TNPW080544K2BEEA achieves 0.26W in 0805 package through optimized thin film construction and thermal management. This higher rating does not change the physical dimensions or electrical resistance; it only increases the maximum continuous power the resistor can safely dissipate without exceeding temperature limits.

Q: Is MCU08050D4422BP500 suitable for automotive applications?

A: MCU08050D4422BP500 lacks AEC-Q200 automotive qualification, unlike the original RG2012P-4422-B-T1. Additionally, its maximum operating temperature is 125°C, which is 30°C below the original specification. This part is suitable for industrial and consumer applications within the 125°C limit but not recommended for automotive designs requiring AEC-Q200 compliance.

Q: What is the significance of the packaging designation (T1 vs T5)?

A: The T1 and T5 designations refer to tape and reel packaging configurations. Both are surface mount compatible formats for automated assembly. T1 and T5 represent different reel specifications and quantities per reel. Functionally, parts with identical electrical specifications but different T designations are interchangeable; the difference is purely in supply format and handling.

Q: Can I substitute a 0.25W or 0.26W rated resistor for the 0.125W original?

A: Yes. Higher power-rated resistors are backward compatible with lower power requirements. If your circuit design requires only 0.125W dissipation, using a 0.25W or 0.26W rated part introduces no functional penalty. The resistor will operate well within its thermal limits, potentially improving reliability. However, physical dimensions may vary slightly; verify height specifications if space is constrained.

Q: What does AEC-Q200 qualification mean?

A: AEC-Q200 is the Automotive Electronics Council qualification standard for passive components in automotive applications. It certifies that the component meets stringent reliability, temperature cycling, moisture resistance, and failure rate requirements for use in automotive environments. AEC-Q200 qualified parts are required for safety-critical automotive circuits.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts listed in this reference, including the original RG2012P-4422-B-T1 and all substitutes, are ROHS3 compliant. ROHS3 compliance certifies that the component contains no restricted hazardous substances (lead, cadmium, mercury, etc.) and meets environmental regulations for electronic equipment.

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