TPD6V8LP-7 Equivalent & Substitute Parts

Part Overview

The TPD6V8LP-7 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Diodes Incorporated, designed for surface mount applications in the 0402 (1006 Metric) package. This component provides transient overvoltage protection with a 5V reverse standoff voltage and 19V maximum clamping voltage at peak pulse current. The part is currently in Last Time Buy status, making identification of active equivalent alternatives essential for ongoing design support and procurement planning.

Substiute Parts

TPD6V8LP-7

Diodes IncorporatedIn Stock: 62493TPD6V8LP-7 Datasheet

Current PartRFQ

TPD6V8LPN-7

Diodes IncorporatedIn Stock: 928TPD6V8LPN-7 Datasheet

MFR RecommendedRFQ

CPDQR5V0U

Comchip TechnologyIn Stock: 50434CPDQR5V0U Datasheet

MFR RecommendedRFQ

PESD5V0S1UL,315

Nexperia USA Inc.In Stock: 14336PESD5V0S1UL,315 Datasheet

MFR RecommendedRFQ

SP1003-01ETG

Littelfuse Inc.In Stock: 75290SP1003-01ETG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPD6V8LP-7 is determined by the following critical parameters:

• Reverse Standoff Voltage (Typ): 5V — all substitutes must maintain this specification
• Unidirectional Configuration: Single channel protection required
• Package Type: Surface mount in 0402 (1006 Metric) or compatible footprint
• Voltage Clamping Range: Maximum clamping voltage between 12V and 20V acceptable for circuit protection
• Peak Pulse Current: Minimum 4.5A (8/20µs) required for equivalent protection
• Operating Temperature Range: Minimum -55°C to 150°C required
• Compliance: ROHS3 compliant, REACH unaffected

The substitute parts listed below meet these core electrical and mechanical criteria, though individual parameters such as exact clamping voltage, peak pulse current capacity, and capacitance may vary within acceptable engineering tolerances for TVS diode applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute (Manufacturer Recommended): TPD6V8LPN-7

The TPD6V8LPN-7 is the direct manufacturer-recommended equivalent from Diodes Incorporated. It maintains identical electrical specifications (5V standoff, 19V clamping, 4.5A peak pulse current, 85W power dissipation) and package configuration (0402/1006 Metric). The only difference is operating temperature range (-55°C to 150°C versus -65°C to 150°C), which is acceptable for most applications. Product status is Active, ensuring long-term availability and supply chain stability.

Secondary Substitutes (Electrical Equivalents):

PESD5V0S1UL,315 (Nexperia USA Inc.) provides equivalent 5V standoff protection with superior peak pulse current capacity (15A) and clamping voltage (20V). This part carries automotive-grade qualification (AEC-Q101) and maintains the full -65°C to 150°C temperature range. Package is SOD-882, which is footprint-compatible with 0402 applications. Higher capacitance (152pF) may affect high-frequency circuit behavior.

CPDQR5V0U (Comchip Technology) offers increased peak pulse current (16A) and power dissipation (200W) with lower clamping voltage (12.5V). Package remains 0402 (1006 Metric). This option provides enhanced transient protection margin but with different voltage clamping characteristics.

SP1003-01ETG (Littelfuse Inc.) is an automotive-qualified TVS diode (AEC-Q101) with 5V standoff and 12V typical clamping voltage. Peak pulse current is 7A, exceeding the minimum 4.5A requirement. Operating temperature range is -40°C to 125°C, which is more limited than the primary part. Package is SOD-882.

Selection Criteria:

• For direct replacement with maximum compatibility: TPD6V8LPN-7
• For automotive applications requiring AEC-Q101 qualification: PESD5V0S1UL,315 or SP1003-01ETG
• For applications requiring enhanced transient current handling: CPDQR5V0U or PESD5V0S1UL,315
• For cost-optimized protection with lower clamping voltage: CPDQR5V0U or SP1003-01ETG

All substitutes are ROHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to the original part.

Frequently Asked Questions (FAQ)

Q: Can TPD6V8LPN-7 be used as a direct drop-in replacement for TPD6V8LP-7?

A: Yes. The TPD6V8LPN-7 is the manufacturer-recommended equivalent with identical electrical specifications and package configuration. The operating temperature range differs by 10°C at the lower end (-55°C versus -65°C), which is acceptable for applications not requiring extended low-temperature operation.

Q: What is the difference between the 0402 (1006 Metric) and SOD-882 packages?

A: Both are surface mount packages for TVS diodes. The 0402 (1006 Metric) is a smaller chip-scale package, while SOD-882 is a slightly larger discrete package. Footprint compatibility depends on PCB design; verify land pattern dimensions before substitution.

Q: Why do substitute parts have different clamping voltages?

A: Clamping voltage variation (12V to 20V) reflects different TVS diode designs optimized for specific protection requirements. All listed substitutes maintain the 5V reverse standoff voltage, which determines circuit activation threshold. Select clamping voltage based on downstream component voltage ratings and transient protection margin requirements.

Q: Are automotive-qualified parts (PESD5V0S1UL,315 and SP1003-01ETG) required for non-automotive applications?

A: No. Automotive qualification (AEC-Q101) indicates enhanced reliability testing and is not mandatory for general-purpose applications. These parts are suitable for any application but may have higher cost. Selection should be based on application requirements, not qualification status alone.

Q: What does the capacitance specification (65pF to 152pF) mean for circuit performance?

A: TVS diode capacitance affects high-frequency signal integrity. Lower capacitance (65pF) minimizes signal distortion in high-speed circuits. Higher capacitance (152pF) may introduce signal attenuation. For applications with frequency-sensitive signals, verify capacitance compatibility with circuit requirements.

Q: Can I use a substitute with higher peak pulse current rating?

A: Yes. Higher peak pulse current capacity (7A to 16A versus 4.5A) provides additional transient protection margin without circuit compatibility issues. This is a conservative design choice that improves overvoltage protection performance.

Q: What is the significance of "Last Time Buy" status for TPD6V8LP-7?

A: Last Time Buy indicates the manufacturer is discontinuing this part number. Existing inventory is available for final purchases, but long-term supply is not guaranteed. Migration to an active substitute part (TPD6V8LPN-7 or alternatives) is recommended for new designs and ongoing production.