SP1013-01WTG Equivalent & Substitute Parts

Part Overview

The SP1013-01WTG is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose ESD and transient protection applications. This bidirectional Zener diode features a 5V reverse standoff voltage with a 9.5V maximum clamping voltage and 2A peak pulse current rating in a compact 2-FlipChip surface mount package. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and component procurement.

Substiute Parts

SP1013-01WTG

Littelfuse Inc.In Stock: 15721SP1013-01WTG Datasheet

Current PartRFQ

SP1020-01WTG

Littelfuse Inc.In Stock: 17980SP1020-01WTG Datasheet

MFR RecommendedRFQ

PEC2305S1Q_R1_00001

Panjit International Inc.In Stock: 10573PEC2305S1Q_R1_00001 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SP1013-01WTG is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Reverse standoff voltage: 5V maximum
• Peak pulse current: 2A (8/20µs)
• Bidirectional Zener TVS diode type
• Surface mount package compatibility
• Operating temperature range: minimum -40°C to 125°C

Secondary Compatibility Factors:

• Clamping voltage tolerance (7V to 10V acceptable range)
• Package form factor (0201/0603 metric or equivalent)
• RoHS3 compliance and MSL rating

Two substitute parts meet these criteria with documented compatibility:

1. SP1020-01WTG (Littelfuse Inc.) – Same manufacturer series upgrade with 6V standoff and 10V clamping voltage, maintaining identical current rating and temperature range in a smaller 01005 (0402 Metric) package.

2. PEC2305S1Q_R1_00001 (Panjit International Inc.) – Alternative manufacturer option with 5V standoff voltage, 15V clamping voltage, and significantly lower capacitance (4.6pF), extended temperature range (-55°C to 150°C), and identical current rating in 0201 (0603 Metric) package.

Parameter Comparison

Engineering Selection Recommendations

SP1020-01WTG Selection: This Littelfuse part maintains the same manufacturer lineage and is the direct series upgrade. It is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating. The 1V increase in standoff voltage (6V vs. 5V) and 0.5V increase in clamping voltage (10V vs. 9.5V) remain within acceptable transient protection margins for general-purpose applications. The smaller package footprint (01005 vs. 0201) provides space optimization benefits. This option is recommended for designs where manufacturer continuity and proven compatibility within the Littelfuse SPA® series are prioritized.

PEC2305S1Q_R1_00001 Selection: This Panjit alternative offers active product status with ROHS3 and REACH compliance. The standoff voltage matches the original specification (5V), while the clamping voltage is elevated to 15V. The significantly reduced capacitance (4.6pF vs. 30pF) provides superior performance in high-frequency or sensitive signal applications. The extended operating temperature range (-55°C to 150°C) accommodates more demanding thermal environments. This option is recommended for applications requiring lower parasitic capacitance or extended temperature operation, with the understanding that the higher clamping voltage may require circuit-level evaluation.

Frequently Asked Questions (FAQ)

Q: Can SP1020-01WTG be used as a direct drop-in replacement for SP1013-01WTG?

A: SP1020-01WTG is electrically compatible for general-purpose transient protection applications. The standoff voltage increases from 5V to 6V and clamping voltage from 9.5V to 10V. The smaller package footprint (01005 vs. 0201) requires PCB layout verification. Both parts maintain identical 2A peak pulse current and -40°C to 125°C operating temperature specifications.

Q: What is the primary difference between the two substitute options?

A: SP1020-01WTG is a Littelfuse series upgrade with slightly elevated voltage specifications and a smaller package. PEC2305S1Q_R1_00001 is an alternative manufacturer part with significantly lower capacitance (4.6pF vs. 30pF) and extended temperature range (-55°C to 150°C), making it suitable for high-frequency or thermally demanding applications.

Q: Are both substitute parts RoHS3 compliant?

A: Yes, both SP1020-01WTG and PEC2305S1Q_R1_00001 are ROHS3 compliant with MSL rating of 1 (Unlimited). PEC2305S1Q_R1_00001 additionally carries REACH Unaffected status.

Q: Does the higher clamping voltage of PEC2305S1Q_R1_00001 affect circuit compatibility?

A: The 15V clamping voltage of PEC2305S1Q_R1_00001 compared to 9.5V of the original part requires circuit-level evaluation. Applications with voltage-sensitive components or tight clamping specifications must assess whether the higher clamping threshold remains within acceptable protection margins.

Q: Which substitute is recommended for high-frequency signal protection?

A: PEC2305S1Q_R1_00001 is recommended for high-frequency applications due to its very low capacitance specification (4.6pF @ 1MHz maximum), compared to 30pF of the original part. This reduces signal distortion and parasitic effects in sensitive circuits.

Q: Are there inventory considerations for these substitutes?

A: Both substitute parts are in active production with documented inventory availability. SP1020-01WTG has 17,880 pieces in stock, and PEC2305S1Q_R1_00001 has 10,543 pieces in stock, providing reliable long-term supply compared to the obsolete SP1013-01WTG.