SSL33HR7G Schottky Diode 30V 3A Equivalent & Substitute Parts

Part Overview

The SSL33HR7G is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 30V DC reverse voltage and 3A average rectified current in a DO-214AB (SMC) surface mount package. This component is classified as discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity. The part carries automotive-grade qualification (AEC-Q101) and is ROHS3 compliant, making it suitable for automotive and industrial applications requiring fast recovery rectification.

Key Parameters

Parameter	SSL33HR7G Value	Unit
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	410 mV @ 3 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	200 µA @ 30 V	µA
Technology	Schottky	—
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction	-55°C ~ 125°C	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the SSL33HR7G is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 30V minimum
Current - Average Rectified (Io): 3A minimum
Technology: Schottky
Package / Case: DO-214AB (SMC) or compatible surface mount package
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Secondary Compatibility Factors:

Operating Temperature Range: Must support -55°C to 125°C minimum
RoHS Compliance: ROHS3 preferred for regulatory alignment
Automotive Grade / AEC-Q101: Preferred for applications requiring automotive qualification

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents (3A Rating): Parts with identical 30V/3A ratings in DO-214AB SMC package. These provide direct functional replacement with minimal circuit redesign.

Category B - Higher Current Capability (5A+ Rating): Parts with 30V rating but higher current capacity (5A or 8A). These are electrically compatible for 3A operation and provide design margin for future current demands, though they occupy different package variants (SMB, SMA) or higher current ratings.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf @ If	Package	Temp Range	RoHS	AEC-Q101	Product Status
SSL33HR7G	Taiwan Semiconductor	30V	3A	410 mV @ 3A	DO-214AB (SMC)	-55°C ~ 125°C	ROHS3	Yes	Discontinued
5821SMJE3/TR13	Microchip Technology	30V	3A	480 mV @ 3A	DO-214AB	-55°C ~ 150°C	ROHS3	No	Active
5821SMJ/TR13	Microchip Technology	30V	3A	480 mV @ 3A	DO-214AB	-55°C ~ 150°C	Non-compliant	No	Active
B330-13-F	Diodes Incorporated	30V	3A	500 mV @ 3A	DO-214AB (SMC)	-55°C ~ 125°C	ROHS3	No	Active
B330A-13-F	Diodes Incorporated	30V	3A	500 mV @ 3A	DO-214AC (SMA)	-55°C ~ 150°C	ROHS3	Yes	Active
B330B-13-F	Diodes Incorporated	30V	3A	500 mV @ 3A	DO-214AA (SMB)	-55°C ~ 150°C	ROHS3	Yes	Active
B330Q-13-F	Diodes Incorporated	30V	3A	500 mV @ 3A	DO-214AB (SMC)	-55°C ~ 150°C	ROHS3	Yes	Active
B530C-13-F	Diodes Incorporated	30V	5A	550 mV @ 5A	DO-214AB (SMC)	-55°C ~ 150°C	ROHS3	No	Active
B530CQ-13-F	Diodes Incorporated	30V	5A	700 mV @ 5A	DO-214AB (SMC)	-55°C ~ 150°C	ROHS3	Yes	Active
HSM830J/TR13	Microchip Technology	30V	8A	620 mV @ 8A	DO-214AB (SMC)	-55°C ~ 175°C	Non-compliant	No	Active
HSM830JE3/TR13	Microchip Technology	30V	8A	620 mV @ 8A	DO-214AB (SMC)	-55°C ~ 175°C	ROHS3	No	Active

Engineering Selection Recommendations

Tier 1 - Direct Replacement (Identical Electrical & Package Specifications):

B330Q-13-F (Diodes Incorporated) is the primary recommended substitute. This part maintains 30V/3A electrical ratings in DO-214AB SMC package with extended operating temperature range (-55°C to 150°C). It carries ROHS3 compliance and AEC-Q101 automotive qualification, matching the regulatory profile of the SSL33HR7G. Product status is active with established supply chain availability.

5821SMJE3/TR13 (Microchip Technology) provides an alternative direct equivalent with identical 30V/3A ratings and ROHS3 compliance. Extended temperature range to 150°C offers additional thermal margin. This part is active and in stock.

Tier 2 - Package-Compatible Alternatives (Same Electrical Rating, Different Package):

B330A-13-F (Diodes Incorporated) maintains 30V/3A electrical specifications but uses DO-214AC (SMA) package instead of SMC. This part carries AEC-Q101 qualification and ROHS3 compliance. Selection requires PCB layout modification to accommodate SMA footprint.

B330B-13-F (Diodes Incorporated) maintains 30V/3A electrical specifications in DO-214AA (SMB) package. This part carries AEC-Q101 qualification and ROHS3 compliance. Selection requires PCB layout modification to accommodate SMB footprint.

Tier 3 - Higher Current Capability (Electrical Superset):

B530C-13-F and B530CQ-13-F (Diodes Incorporated) provide 30V/5A ratings in DO-214AB SMC package. These parts are electrically compatible for 3A operation with design margin. B530CQ-13-F carries AEC-Q101 qualification and ROHS3 compliance. Forward voltage increases to 550-700 mV at rated current, requiring circuit verification for power dissipation impact.

HSM830JE3/TR13 (Microchip Technology) provides 30V/8A rating in DO-214AB SMC package with extended temperature range to 175°C and ROHS3 compliance. This part is electrically compatible for 3A operation with maximum design margin. Forward voltage at 8A is 620 mV; operation at 3A will exhibit lower forward voltage. No AEC-Q101 qualification.

Tier 4 - Non-Compliant Alternatives (Active Supply, Regulatory Limitations):

5821SMJ/TR13 (Microchip Technology) and HSM830J/TR13 (Microchip Technology) are active alternatives but lack ROHS3 compliance. These parts are suitable only for applications where RoHS compliance is not required.

B330-13-F (Diodes Incorporated) lacks AEC-Q101 qualification despite ROHS3 compliance. Suitable for non-automotive applications.

Frequently Asked Questions (FAQ)

Q: Can B330Q-13-F directly replace SSL33HR7G without PCB modification?

A: Yes. B330Q-13-F maintains identical electrical specifications (30V/3A) and uses the same DO-214AB SMC package. No PCB layout changes are required. Forward voltage increases from 410 mV to 500 mV at 3A, which may increase power dissipation by approximately 27% in the diode itself; verify thermal design margins in the application circuit.

Q: What is the difference between B330-13-F, B330A-13-F, and B330B-13-F?

A: All three parts share identical electrical specifications (30V/3A Schottky diode) but differ in package type. B330-13-F uses SMC (DO-214AB), B330A-13-F uses SMA (DO-214AC), and B330B-13-F uses SMB (DO-214AA). Package selection depends on PCB footprint availability and thermal requirements. SMB package provides larger thermal pad for improved heat dissipation.

Q: Are the 5A and 8A rated parts (B530C-13-F, HSM830JE3/TR13) suitable for 3A applications?

A: Yes. Higher current-rated Schottky diodes are electrically compatible for lower current operation. These parts provide design margin for future current demands and typically exhibit lower forward voltage at 3A operation compared to their rated current specifications. Verify that the lower forward voltage does not negatively impact circuit performance.

Q: Which substitute part has the best compliance profile?

A: B330Q-13-F and B330B-13-F both carry ROHS3 compliance and AEC-Q101 automotive qualification, matching the regulatory profile of SSL33HR7G. B330Q-13-F is preferred for direct package compatibility (SMC).

Q: What is the impact of forward voltage differences between SSL33HR7G and substitute parts?

A: SSL33HR7G specifies 410 mV forward voltage at 3A. Most active substitutes (B330 series, 5821 series) specify 480-500 mV at 3A. This 70-90 mV increase results in approximately 21-22% higher power dissipation in the diode. For applications with tight thermal budgets or high-frequency switching, verify that the application circuit can accommodate this additional heat generation.

Q: Can I use 5821SMJ/TR13 instead of 5821SMJE3/TR13?

A: Both parts have identical electrical specifications and package. The primary difference is RoHS compliance: 5821SMJE3/TR13 is ROHS3 compliant while 5821SMJ/TR13 is not. For applications requiring RoHS compliance, use 5821SMJE3/TR13. For applications without RoHS requirements, both are functionally equivalent.

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

A: SSL33HR7G operates from -55°C to 125°C. Most active substitutes extend this to -55°C to 150°C, providing additional thermal margin. HSM830JE3/TR13 extends to -55°C to 175°C. Extended temperature range does not negatively impact applications operating within the original -55°C to 125°C window; it provides additional design flexibility for future applications.

Q: Are there package footprint compatibility issues between SMC, SMA, and SMB variants?

A: Yes. SMC (DO-214AB), SMA (DO-214AC), and SMB (DO-214AA) packages have different physical dimensions and PCB footprints. Direct substitution between these packages requires PCB layout modification. If PCB layout cannot be modified, select a substitute with matching package type (B330Q-13-F for SMC compatibility).

Q: What does AEC-Q101 qualification mean for automotive applications?

A: AEC-Q101 is the Automotive Electronics Council qualification standard for discrete semiconductors. It certifies that the component meets automotive industry reliability and quality requirements. For automotive applications, select parts with AEC-Q101 qualification: B330A-13-F, B330B-13-F, or B330Q-13-F.

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