Equivalent & Substitute Parts for RN732ATTD4070B50

Part Overview

The RN732ATTD4070B50 is a 407 Ohms ±0.1% thin film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.1W (1/10W) in 0805 (2012 Metric) package. This component is classified as obsolete product status. Due to its obsolescence, equivalent and substitute parts with active product status are available from KOA Speer Electronics and Vishay Dale manufacturers. Substitutes maintain the core electrical specifications (407 Ohms resistance, ±0.1% tolerance, 0805 package) while offering enhanced power ratings, automotive certifications, or military-grade specifications depending on application requirements.

Key Parameters

Parameter	Value
Resistance	407 Ohms
Tolerance	±0.1%
Power Rating	0.1W (1/10W)
Package / Case	0805 (2012 Metric)
Composition	Thin Film
Temperature Coefficient	±50ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution logic is based on the following core parameters that determine functional equivalence:

Primary Matching Criteria:

Resistance value: 407 Ohms (exact match required)
Tolerance: ±0.1% (exact match required)
Package: 0805 (2012 Metric) (exact match required)
Composition: Thin Film (exact match required)
Operating temperature range: -55°C ~ 155°C (minimum requirement)
Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Secondary Substitution Parameters:

Power rating: Substitutes with equal or higher power ratings are acceptable
Temperature coefficient: Substitutes with equal or lower absolute values are acceptable
Product status: Active status preferred over obsolete
Compliance certifications: Additional certifications (AEC-Q200, Military) represent upgrades

Substitute parts are grouped into two categories:

Direct Equivalent: RN73R2ATTD4070B50 maintains identical electrical characteristics with upgraded power rating (0.125W vs. 0.1W) and active product status.

Upgrade Substitutes: PAT0805E4070BST1, PHP00805E4070BBT1, PHP00805E4070BST1, PHP00805H4070BBT1, PHP00805H4070BST1, TNPW0805407RBECN, and TNPW0805407RBETA offer enhanced power ratings, automotive certifications, military specifications, or improved temperature coefficients while maintaining core electrical parameters.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Product Status	RoHS Status	Key Features
RN732ATTD4070B50	KOA Speer	407 Ω	±0.1%	0.1	±50	-55 ~ 155	Obsolete	ROHS3	Moisture Resistant
RN73R2ATTD4070B50	KOA Speer	407 Ω	±0.1%	0.125	±50	-55 ~ 155	Active	ROHS3	Automotive AEC-Q200, Moisture Resistant
PAT0805E4070BST1	Vishay Dale	407 Ω	±0.1%	0.2	±25	-55 ~ 155	Active	ROHS3	Anti-Sulfur, Automotive AEC-Q200, Moisture Resistant
PHP00805E4070BBT1	Vishay Dale	407 Ω	±0.1%	0.63	±25	-55 ~ 155	Active	Non-compliant	Flame Proof, Moisture Resistant, Safety
PHP00805E4070BST1	Vishay Dale	407 Ω	±0.1%	0.63	±25	-55 ~ 155	Active	ROHS3	Flame Proof, Moisture Resistant, Safety
PHP00805H4070BBT1	Vishay Dale	407 Ω	±0.1%	0.63	±50	-55 ~ 155	Active	Non-compliant	Flame Proof, Moisture Resistant, Safety
PHP00805H4070BST1	Vishay Dale	407 Ω	±0.1%	0.63	±50	-55 ~ 155	Active	ROHS3	Flame Proof, Moisture Resistant, Safety
TNPW0805407RBECN	Vishay Dale	407 Ω	±0.1%	0.125	±25	-55 ~ 125	Active	Non-compliant	Military
TNPW0805407RBETA	Vishay Dale	407 Ω	±0.1%	0.125	±25	-55 ~ 125	Active	Non-compliant	Military

Engineering Selection Recommendations

For Direct Replacement (Preferred): Select RN73R2ATTD4070B50 when seeking a direct equivalent with active product status. This part maintains identical electrical specifications to the obsolete RN732ATTD4070B50 while offering automotive AEC-Q200 certification and improved availability. Active product status ensures long-term supply continuity.

For Automotive Applications: PAT0805E4070BST1 is suitable for automotive environments requiring AEC-Q200 certification. This part provides enhanced power rating (0.2W) and improved temperature coefficient (±25ppm/°C) with ROHS3 compliance and anti-sulfur protection.

For High-Reliability Applications: PHP00805E4070BST1 or PHP00805H4070BST1 are appropriate for applications requiring flame-proof and safety-rated components. These parts deliver significantly higher power dissipation (0.63W) with ROHS3 compliance and active product status. PHP00805H4070BST1 maintains the original ±50ppm/°C temperature coefficient.

For Military Applications: TNPW0805407RBECN or TNPW0805407RBETA provide military-grade thin film resistors with active product status. These parts feature improved temperature coefficient (±25ppm/°C) and are suitable for defense and aerospace applications. Note: Operating temperature range is limited to -55°C ~ 125°C.

Compliance Considerations: All recommended substitutes maintain ROHS3 compliance except TNPW series (RoHS non-compliant) and PHP00805E4070BBT1, PHP00805H4070BBT1 (RoHS non-compliant). Select ROHS3-compliant parts for consumer and commercial applications requiring environmental compliance.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD4070B50 directly replace RN732ATTD4070B50 in existing designs?

A: Yes. RN73R2ATTD4070B50 is a direct equivalent with identical resistance (407 Ohms), tolerance (±0.1%), package (0805), and operating temperature range (-55°C ~ 155°C). The higher power rating (0.125W vs. 0.1W) and automotive AEC-Q200 certification represent improvements. No circuit redesign is required.

Q: What is the difference between PAT0805E4070BST1 and PHP00805E4070BST1?

A: Both parts maintain 407 Ohms resistance and ±0.1% tolerance in 0805 package. PAT0805E4070BST1 is rated at 0.2W with anti-sulfur protection and automotive AEC-Q200 certification. PHP00805E4070BST1 is rated at 0.63W with flame-proof and safety features. Select PAT for standard automotive applications; select PHP for high-power or safety-critical applications.

Q: Are TNPW0805407RBECN and TNPW0805407RBETA interchangeable?

A: Yes. Both parts are electrically identical with 407 Ohms resistance, ±0.1% tolerance, 0.125W power rating, and ±25ppm/°C temperature coefficient. Both are military-grade thin film resistors in 0805 package with active product status. Selection between them depends on supplier availability and packaging requirements.

Q: What is the impact of temperature coefficient differences between substitute parts?

A: The original RN732ATTD4070B50 has ±50ppm/°C temperature coefficient. Substitutes with ±25ppm/°C (PAT0805E4070BST1, PHP00805E4070BST1, TNPW series) provide improved temperature stability, resulting in lower resistance drift across the operating temperature range. This represents an upgrade for precision applications. PHP00805H4070BBT1 and PHP00805H4070BST1 maintain ±50ppm/°C matching the original specification.

Q: Can I use a higher power-rated substitute in a design specified for 0.1W?

A: Yes. Higher power-rated substitutes (0.125W, 0.2W, 0.63W) are acceptable replacements. The component will operate within its power dissipation limits. Physical dimensions remain within 0805 package specifications. Verify PCB layout compatibility, particularly for 0.63W parts which have slightly increased height (0.033" vs. 0.024" maximum).

Q: Which substitute is recommended for RoHS3 compliance?

A: RN73R2ATTD4070B50, PAT0805E4070BST1, PHP00805E4070BST1, and PHP00805H4070BST1 are ROHS3 compliant. TNPW0805407RBECN and TNPW0805407RBETA are RoHS non-compliant. Select ROHS3-compliant parts for applications requiring environmental compliance certification.

Q: What is the operating temperature limitation for TNPW military-grade resistors?

A: TNPW0805407RBECN and TNPW0805407RBETA are rated for -55°C ~ 125°C operating temperature, which is narrower than the original RN732ATTD4070B50 specification (-55°C ~ 155°C). These parts are suitable only for applications not exceeding 125°C maximum operating temperature.

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