P1168.682NLT Equivalent & Substitute Parts

Part Overview

The P1168.682NLT is a 6.8 µH shielded wirewound inductor manufactured by Pulse Electronics, designed for surface mount applications requiring moderate current handling and low DC resistance. This Active product is specified for operating temperatures from -40°C to 130°C and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the allowed parameter tolerances for this inductor category.

Key Parameters

Parameter	Value	Unit
Inductance	6.8	µH
Inductance Tolerance	±30% (±20% for SRR1240-6R8M)	%
Current Rating	4.6	A
DC Resistance (DCR)	22	mOhm Max
Saturation Current (Isat)	5.2	A
Shielding	Shielded	—
Mounting Type	Surface Mount	—
Package	Nonstandard	—
Operating Temperature Range	-40°C to 130°C	°C
Frequency - Self Resonant	27	MHz
RoHS Status	ROHS3 Compliant	—
MSL Rating	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the P1168.682NLT is determined by the following criteria:

Inductance Value: Must be 6.8 µH with tolerance overlap acceptable within ±30%
Current Rating: Minimum 4.3 A; parts rated 4.6 A or higher are acceptable
DC Resistance: Maximum 25 mOhm; lower values are acceptable
Saturation Current: Minimum 4.7 A; higher values are acceptable
Shielding: Must be shielded
Mounting Type: Must be surface mount
Package Type: Nonstandard package with compatible footprint dimensions
Operating Temperature: Minimum -40°C to 125°C range; -40°C to 130°C is preferred
RoHS & Compliance: ROHS3 compliant; REACH unaffected; EAR99 classification

Both substitute parts meet these criteria with minor variations in current rating, DCR, and temperature range.

Parameter Comparison

Parameter	P1168.682NLT (Pulse Electronics)	7447715006 (Würth Elektronik)	SRR1240-6R8M (Bourns Inc.)
Inductance	6.8 µH	6.8 µH	6.8 µH
Inductance Tolerance	±30%	±30%	±20%
Current Rating (Amps)	4.6 A	4.3 A	5.2 A
Saturation Current (Isat)	5.2 A	4.7 A	4.7 A
DC Resistance (DCR)	22 mOhm Max	25 mOhm Max	23 mOhm Max
Shielding	Shielded	Shielded	Shielded
Type	Wirewound	Drum Core, Wirewound	Drum Core, Wirewound
Frequency - Self Resonant	27 MHz	27 MHz	34 MHz
Operating Temperature Range	-40°C to 130°C	-40°C to 125°C	-40°C to 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	Nonstandard	Nonstandard	Nonstandard
Size / Dimension	12.24mm x 12.24mm	12.00mm x 12.00mm	12.50mm x 12.50mm
Height - Seated (Max)	4.50mm	4.50mm	4.50mm
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99	EAR99

Engineering Selection Recommendations

P1168.682NLT (Primary Part): Active product status with extended operating temperature range to 130°C. Suitable for applications requiring maximum thermal headroom. ROHS3 compliant with unlimited MSL rating.

7447715006 (Würth Elektronik WE-PD Series): Active product with AEC-Q200 automotive qualification. Operating temperature limited to 125°C. Slightly lower current rating (4.3 A vs. 4.6 A) and marginally higher DCR (25 mOhm vs. 22 mOhm). Footprint dimensions 12.00mm x 12.00mm are slightly smaller. ROHS3 compliant with unlimited MSL rating.

SRR1240-6R8M (Bourns Inc. SRR1240 Series): Active product with tighter inductance tolerance (±20% vs. ±30%). Highest current rating (5.2 A) and highest self-resonant frequency (34 MHz). Footprint dimensions 12.50mm x 12.50mm are slightly larger. Operating temperature limited to 125°C. ROHS3 compliant with unlimited MSL rating.

Selection between substitute parts depends on application-specific requirements: thermal environment, PCB layout constraints, current headroom, and frequency response characteristics.

Frequently Asked Questions (FAQ)

Q: Can 7447715006 replace P1168.682NLT in all applications?

A: 7447715006 is electrically compatible for most applications. However, the lower current rating (4.3 A vs. 4.6 A) and reduced operating temperature maximum (125°C vs. 130°C) must be evaluated against circuit requirements. DCR is slightly higher (25 mOhm vs. 22 mOhm), which may affect power dissipation in high-current circuits.

Q: What are the footprint differences between these parts?

A: All three parts share the same height (4.50mm) and mounting type (surface mount). Lateral dimensions vary: P1168.682NLT is 12.24mm x 12.24mm, 7447715006 is 12.00mm x 12.00mm, and SRR1240-6R8M is 12.50mm x 12.50mm. PCB layout must accommodate these dimensional variations.

Q: Which substitute offers the best current handling?

A: SRR1240-6R8M provides the highest current rating at 5.2 A, compared to 4.6 A for P1168.682NLT and 4.3 A for 7447715006. This makes SRR1240-6R8M suitable for applications requiring maximum current margin.

Q: Are all three parts RoHS compliant?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes.

Q: What is the significance of inductance tolerance differences?

A: P1168.682NLT and 7447715006 both specify ±30% tolerance, while SRR1240-6R8M specifies ±20%. Tighter tolerance in SRR1240-6R8M may be advantageous for circuits with strict inductance requirements, though all three parts meet the 6.8 µH nominal specification.

Q: How do self-resonant frequencies compare?

A: P1168.682NLT and 7447715006 both specify 27 MHz self-resonant frequency, while SRR1240-6R8M specifies 34 MHz. Higher self-resonant frequency in SRR1240-6R8M indicates better high-frequency performance characteristics.

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