ESD9L5.0ST5G Equivalent & Substitute Parts

Part Overview

The ESD9L5.0ST5G is an active Transient Voltage Suppressor (TVS) diode manufactured by onsemi, designed for general-purpose ESD protection applications. This unidirectional Zener-type device operates across a temperature range of -55°C to 150°C and is packaged in SOD-923 surface mount configuration. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this product category.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	5V (Max)	V
Voltage - Breakdown (Min)	5.4V	V
Voltage - Clamping (Max) @ Ipp	9.8V	V
Current - Peak Pulse (8/20µs)	1A	A
Capacitance @ 1MHz	0.5pF	pF
Operating Temperature Range	-55°C to 150°C	°C
Package / Case	SOD-923	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the ESD9L5.0ST5G are classified into two categories based on electrical parameter alignment:

Direct Substitutes maintain identical or equivalent electrical specifications across all critical parameters: reverse standoff voltage (5V max), breakdown voltage (5.4V min), clamping voltage (9.8V max), peak pulse current (1A at 8/20µs), and capacitance (0.5pF @ 1MHz). These parts are interchangeable without circuit redesign.

Similar Substitutes share the same reverse standoff voltage (5V max) and general application category but differ in one or more secondary parameters such as clamping voltage, peak pulse current, operating temperature range, or package configuration. Selection of similar substitutes requires verification that the application tolerates the parameter variance.

All substitute candidates maintain ROHS3 compliance, unidirectional Zener-type topology, surface mount configuration, and MSL 1 rating.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (8/20µs)	Capacitance @ 1MHz	Operating Temperature	Package / Case	Product Status
ESD9L5.0ST5G	onsemi	5V (Max)	5.4V	9.8V	1A	0.5pF	-55°C ~ 150°C	SOD-923	Active
ESDLC5V0D9-TP	Micro Commercial Co	5V (Max)	5.4V	9.8V	1A	0.5pF	-55°C ~ 150°C	SOD-923	Active
ESDAXLC6-1MY2	STMicroelectronics	3V	6V	—	—	0.35pF @ 200MHz ~ 3GHz	-40°C ~ 125°C	SOD882 (µQFN-2)	Active
PE1605M1Q_R1_00001	Panjit International Inc.	5V (Max)	5.5V	15V	4A	0.3pF @ 1MHz	-55°C ~ 150°C	2-DFN (1x0.6)	Active
SP3030-01ETG	Littelfuse Inc.	5V (Max)	—	10V (Typ)	2A	0.5pF @ 1MHz	-40°C ~ 125°C	SOD-882	Active
SP3031-01ETG	Littelfuse	5V (Max)	6V	7.5V (Typ)	5A	—	-40°C ~ 125°C	SOD-882	Active
SP3530-01ETG	Littelfuse Inc.	7V (Max)	8.2V (Typ)	11.8V (Typ)	2.5A	0.3pF @ 3GHz	-40°C ~ 125°C	SOD-882	Active

Engineering Selection Recommendations

ESDLC5V0D9-TP (Micro Commercial Co) is the direct electrical equivalent to ESD9L5.0ST5G. All critical parameters—reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current, and capacitance—are identical. Both parts maintain ROHS3 compliance and MSL 1 rating. The primary difference is packaging format (Tape & Reel vs. Cut Tape & Digi-Reel) and inventory source. This part is suitable for direct substitution in production environments where packaging format compatibility is confirmed.

SP3030-01ETG (Littelfuse Inc.) maintains the 5V reverse standoff voltage and 0.5pF capacitance specification. The clamping voltage is 10V (Typ) versus 9.8V, and peak pulse current is rated at 2A versus 1A. This part carries AEC-Q101 automotive qualification and operates across -40°C to 125°C. Selection requires confirmation that the higher clamping voltage and increased current rating are acceptable for the application.

SP3031-01ETG (Littelfuse) shares the 5V reverse standoff voltage but specifies a lower clamping voltage of 7.5V (Typ) and higher peak pulse current of 5A (8/20µs). Operating temperature range is -40°C to 125°C with AEC-Q101 qualification. This configuration is suitable for applications requiring higher transient current handling with lower clamping thresholds.

PE1605M1Q_R1_00001 (Panjit International Inc.) maintains the 5V reverse standoff voltage and -55°C to 150°C operating range but specifies higher clamping voltage (15V) and peak pulse current (4A). Package configuration is 2-DFN (1x0.6) rather than SOD-923. This part is designated for USB protection applications and requires PCB layout compatibility verification.

ESDAXLC6-1MY2 (STMicroelectronics) operates at 3V reverse standoff voltage, which differs from the 5V specification of the main part. Operating temperature range is -40°C to 125°C. This part is not recommended as a direct substitute due to the voltage specification mismatch.

SP3530-01ETG (Littelfuse Inc.) operates at 7V reverse standoff voltage, which exceeds the 5V specification of the main part. This part is not recommended as a direct substitute due to the voltage specification mismatch.

Frequently Asked Questions (FAQ)

Q: Can ESDLC5V0D9-TP be used as a direct replacement for ESD9L5.0ST5G?

A: Yes. ESDLC5V0D9-TP is electrically identical to ESD9L5.0ST5G across all specified parameters. The only difference is packaging format (Tape & Reel vs. Cut Tape & Digi-Reel). Confirm packaging compatibility with your assembly process before implementation.

Q: What is the difference between direct and similar substitutes?

A: Direct substitutes maintain identical electrical specifications across all critical parameters and are interchangeable without circuit modification. Similar substitutes share the same reverse standoff voltage but differ in secondary parameters such as clamping voltage, peak pulse current, or operating temperature. Similar substitutes require application-level verification before use.

Q: Why is SP3530-01ETG not recommended as a substitute?

A: SP3530-01ETG operates at 7V reverse standoff voltage, which exceeds the 5V specification of ESD9L5.0ST5G. This voltage mismatch makes it unsuitable for circuits designed around the 5V protection threshold.

Q: Can I use SP3031-01ETG if my application requires higher transient current handling?

A: SP3031-01ETG is rated for 5A peak pulse current versus 1A for ESD9L5.0ST5G, and specifies a lower clamping voltage of 7.5V (Typ). If your application can tolerate the lower clamping threshold and benefits from higher current capacity, this part may be suitable. Verify circuit performance under transient conditions before production implementation.

Q: What are the package compatibility considerations?

A: ESD9L5.0ST5G uses SOD-923 package. ESDLC5V0D9-TP also uses SOD-923 and is directly compatible. SP3030-01ETG, SP3031-01ETG, and SP3530-01ETG use SOD-882 package, which has different footprint dimensions. PE1605M1Q_R1_00001 uses 2-DFN (1x0.6) package. PCB layout and assembly equipment compatibility must be verified for any package change.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, consistent with the main part specification.

Q: What is the operating temperature consideration when selecting a substitute?

A: ESD9L5.0ST5G operates across -55°C to 150°C. Most similar substitutes (SP3030-01ETG, SP3031-01ETG, SP3530-01ETG) operate across -40°C to 125°C, which is a narrower range. If your application requires operation below -40°C or above 125°C, verify that the substitute part meets your temperature requirements. PE1605M1Q_R1_00001 maintains the full -55°C to 150°C range.

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