SP3002-04HTG Equivalent & Substitute Parts

Part Overview

The SP3002-04HTG is a 6V Reverse Standoff, 13V Clamping Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc. in SOT-23-6 surface mount package. This steering (rail-to-rail) TVS diode with 4 unidirectional channels is designed for general-purpose transient voltage protection applications. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	SP3002-04HTG
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Series	SP3002, SPA®
Product Status	Obsolete
Type	Steering (Rail to Rail)
Unidirectional Channels	4
Voltage - Reverse Standoff (Typ)	6V (Max)
Voltage - Clamping (Max) @ Ipp	13V
Current - Peak Pulse (8/20µs)	4.5A
Power Line Protection	Yes
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount
Package / Case	SOT-23-6
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the SP3002-04HTG is determined by the following critical parameters:

Primary Substitution Criteria:

Unidirectional Channels: 4 (steering configuration required)
Mounting Type: Surface Mount
Package / Case: SOT-23-6 compatible footprint
Voltage - Reverse Standoff (Typ): 6V nominal range
Voltage - Clamping (Max) @ Ipp: 13V nominal range
Current - Peak Pulse (8/20µs): 4.5A minimum
Type: Steering (Rail to Rail) configuration
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents (Reverse Standoff 5V-6V, Clamping 13V-17V): These parts maintain the core voltage protection characteristics and steering topology of the original part.

Category B - Lower Voltage Alternatives (Reverse Standoff 3.3V-5.5V, Clamping 8.5V-10V): These parts provide reduced voltage protection suitable for lower-voltage circuit applications but maintain the 4-channel steering configuration and SOT-23-6 package compatibility.

Parameter Comparison

Part Number	Manufacturer	Type	Channels	Reverse Standoff (V)	Clamping (V)	Peak Pulse (A)	Package	Status
SP3002-04HTG	Littelfuse Inc.	Steering	4	6V	13V	4.5A (8/20µs)	SOT-23-6	Obsolete
HDMIULC6-4SC6	STMicroelectronics	Steering	4	5V	17V	5A (8/20µs)	SOT-23-6	Active
DVIULC6-4SC6	STMicroelectronics	Steering	4	5V	17V	5A (8/20µs)	SOT-23-6	Active
USBLC6-4SC6	STMicroelectronics	Steering	4	5.25V	17V	5A (8/20µs)	SOT-23-6	Active
NUP4114HMR6T1G	onsemi	Steering	4	5.5V	10V	8A (8/20µs)	SOT-23-6 Thin, TSOT-23-6	Active
RCLAMP0504S.TCT	Semtech Corporation	Steering	4	5V	25V	6A (8/20µs)	SOT-23-6	Active
SP0504SHTG	Littelfuse Inc.	Zener	4	5.5V	8.5V	—	SOT-23-6	Active
D1213A-04TS-7	Diodes Incorporated	Steering	4	3.3V	10V (Typ)	1A (8/20µs)	SOT-23-6 Thin, TSOT-23-6	Active
IP4220CZ6F	Nexperia USA Inc.	Steering	4	5.5V (Max)	—	—	SC-74, SOT-457	Active
IP4220CZ6,125	Nexperia USA Inc.	Steering	4	5.5V (Max)	—	—	SC-74, SOT-457	Active
SZCM1213A-04SO	onsemi	Steering	4	3.3V	10V (Typ)	1A (8/20µs)	SC-74, SOT-457	Active

Engineering Selection Recommendations

Primary Substitutes (Recommended for Direct Replacement):

HDMIULC6-4SC6, DVIULC6-4SC6, and USBLC6-4SC6 from STMicroelectronics are the closest functional equivalents. All three maintain the 4-channel steering configuration, SOT-23-6 package, and ROHS3 compliance. These parts provide equal or superior peak pulse current handling (5A vs. 4.5A) and are in active production status. The slightly higher clamping voltage (17V vs. 13V) provides additional transient protection margin.

Secondary Substitutes (Application-Dependent):

NUP4114HMR6T1G from onsemi offers superior peak pulse current (8A) and maintains SOT-23-6 package compatibility with active product status and ROHS3 compliance. The 10V clamping voltage is lower than the original part, suitable for applications with reduced voltage stress requirements.

RCLAMP0504S.TCT from Semtech Corporation provides the highest clamping voltage (25V) and peak pulse current (6A) with extended operating temperature range (-55°C to 125°C). This part is suitable for applications requiring enhanced transient protection.

Lower Voltage Alternatives:

D1213A-04TS-7 from Diodes Incorporated and SZCM1213A-04SO from onsemi are automotive-grade alternatives (AEC-Q101 qualified) with 3.3V reverse standoff and 10V clamping voltage. These parts are suitable only for low-voltage circuit protection and feature reduced peak pulse current (1A). Package compatibility differs (TSOT-26 and SC-74 respectively).

Not Recommended:

SP0504SHTG uses Zener topology rather than steering configuration, altering the protection characteristics. IP4220CZ6F and IP4220CZ6,125 lack complete clamping voltage specifications and use SC-74/SOT-457 packages incompatible with SOT-23-6 footprints.

Frequently Asked Questions (FAQ)

Q: Can I use HDMIULC6-4SC6 as a direct replacement for SP3002-04HTG?

A: Yes. Both parts maintain 4-channel steering configuration, SOT-23-6 package, and ROHS3 compliance. The HDMIULC6-4SC6 provides equal peak pulse current (5A vs. 4.5A) and higher clamping voltage (17V vs. 13V), offering improved transient protection. Electrical performance is compatible for general-purpose applications.

Q: What is the difference between steering and Zener TVS diodes?

A: Steering TVS diodes (rail-to-rail configuration) protect multiple signal lines with a single component by steering transients to power rails. Zener TVS diodes provide single-line protection. The SP3002-04HTG uses steering topology; SP0504SHTG uses Zener topology and is not functionally equivalent.

Q: Are the IP4220 series parts compatible with SP3002-04HTG?

A: No. IP4220CZ6F and IP4220CZ6,125 use SC-74/SOT-457 packages, which are not footprint-compatible with the SOT-23-6 package of SP3002-04HTG. Additionally, complete electrical specifications are not provided for these parts.

Q: Can I use NUP4114HMR6T1G in a 6V standoff application?

A: NUP4114HMR6T1G has a 5.5V reverse standoff, which is slightly lower than SP3002-04HTG (6V). For applications requiring precise 6V standoff voltage, this part may not be suitable. However, the 0.5V difference is often acceptable in general-purpose protection circuits.

Q: What is the advantage of RCLAMP0504S.TCT over other substitutes?

A: RCLAMP0504S.TCT provides the highest peak pulse current (6A) and clamping voltage (25V) among available substitutes, with extended operating temperature range (-55°C to 125°C). This part is suitable for high-stress transient protection applications. The trade-off is higher clamping voltage, which may not be necessary for all applications.

Q: Are automotive-grade alternatives available?

A: Yes. D1213A-04TS-7 and SZCM1213A-04SO are AEC-Q101 qualified automotive-grade parts. However, both feature 3.3V reverse standoff and 1A peak pulse current, making them suitable only for low-voltage applications. Package compatibility differs from the original part.

Q: What does ROHS3 compliance mean for component selection?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. All recommended substitutes maintain ROHS3 compliance, ensuring regulatory compatibility with the original part.

Q: Can I substitute parts with different package codes if the footprint is similar?

A: No. Package codes define specific mechanical and electrical characteristics. SOT-23-6 and SC-74/SOT-457 packages have different pin configurations and footprints. Only parts explicitly rated for SOT-23-6 package should be used as direct replacements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message