SS13-TP Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS13-TP is a 30V, 1A Schottky rectifier diode manufactured by Micro Commercial Co in DO-214AC (SMA) surface mount package. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and design requirements. Schottky diodes in this voltage and current class are widely used in power supply circuits, reverse polarity protection, and high-frequency switching applications where fast recovery characteristics are essential.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) Maximum	30	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) Maximum @ If	550 mV @ 1 A	mV
Speed - Fast Recovery	≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	500 µA @ 30 V	µA
Mounting Type	Surface Mount	—
Package / Case	DO-214AC, SMA	—
Operating Temperature - Junction	-55°C ~ 125°C	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the SS13-TP is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) Maximum: 30V (exact match required)
Current - Average Rectified (Io): 1A (exact match required for direct substitution; higher ratings acceptable with design verification)
Technology: Schottky (mandatory for fast recovery characteristics)
Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (mandatory)
Mounting Type: Surface Mount (required for PCB compatibility)
Package / Case: DO-214AC, SMA or equivalent footprint (required for mechanical fit)

Secondary Compatibility Parameters:

Voltage - Forward (Vf) Maximum @ If: Variations acceptable within typical circuit tolerance ranges
Current - Reverse Leakage @ Vr: Lower values indicate superior performance; higher values acceptable within application limits
Operating Temperature - Junction: Extended ranges provide design margin
RoHS Status: ROHS3 Compliant (regulatory requirement)

Parts are grouped into three categories: direct equivalents (identical electrical and mechanical specifications), compatible substitutes (same voltage/current ratings with different package variants), and higher-rated alternatives (increased current capacity for design flexibility).

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) @ If (mV)	Reverse Leakage @ Vr (µA)	Package	Tj (°C)	Product Status
SS13-TP	Micro Commercial Co	30	1	550 @ 1A	500 @ 30V	DO-214AC, SMA	-55 ~ 125	Obsolete
SS13-LTP	Micro Commercial Co	30	1	500 @ 1A	500 @ 30V	DO-214AC, SMA	-55 ~ 150	Not For New Designs
B130-13-F	Diodes Incorporated	30	1	500 @ 1A	500 @ 30V	DO-214AC, SMA	-65 ~ 150	Active
PMEG3010ER,115	Nexperia USA Inc.	30	1	360 @ 1A	1500 @ 30V	SOD-123W	Max 150	Active
RBR1L30ATE25	Rohm Semiconductor	30	1	480 @ 1A	50 @ 30V	DO-214AC, SMA	Max 150	Not For New Designs
SL13-M3/61T	Vishay General Semiconductor	30	1.5	445 @ 1A	200 @ 30V	DO-214AC, SMA	-55 ~ 125	Active
SS13	Fairchild Semiconductor	30	1	500 @ 1A	200 @ 30V	DO-214AC, SMA	-65 ~ 125	Active
STPS130A	STMicroelectronics	30	1	550 @ 1A	10 @ 30V	DO-214AC, SMA	Max 150	Active
STPS1L30A	STMicroelectronics	30	1	395 @ 1A	200 @ 30V	DO-214AC, SMA	Max 150	Active
STPS2L30A	STMicroelectronics	30	2	450 @ 2A	200 @ 30V	DO-214AC, SMA	Max 150	Active

Engineering Selection Recommendations

Direct Equivalents (Recommended for Immediate Replacement):

The B130-13-F (Diodes Incorporated) and STPS1L30A (STMicroelectronics) are the primary recommended substitutes. Both maintain exact electrical specifications (30V, 1A) with identical DO-214AC, SMA package compatibility. B130-13-F offers extended temperature range (-65°C to 150°C) and active product status. STPS1L30A provides superior forward voltage characteristics (395 mV @ 1A versus 550 mV) and active product status with extended junction temperature rating to 150°C.

Compatible Alternatives (Same Voltage/Current, Different Package):

The PMEG3010ER,115 (Nexperia USA Inc.) provides equivalent electrical performance with superior forward voltage (360 mV @ 1A) but uses SOD-123W package instead of DO-214AC. This alternative requires PCB layout modification and is suitable only when package footprint change is acceptable.

Higher Current Capacity Option:

The STPS2L30A (STMicroelectronics) maintains 30V reverse voltage with doubled current capacity (2A versus 1A). This part is suitable for applications requiring design margin or future current scaling while maintaining identical package footprint.

Obsolete or Legacy Status Parts:

SS13-LTP (Micro Commercial Co) and RBR1L30ATE25 (Rohm Semiconductor) carry "Not For New Designs" status and should not be selected for new production despite electrical compatibility. These parts are acceptable only for legacy system maintenance where supply continuity is critical.

Compliance Verification:

All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, matching the original SS13-TP regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can I use STPS2L30A (2A) as a direct replacement for SS13-TP (1A)?

A: Yes. The STPS2L30A maintains identical 30V reverse voltage rating and DO-214AC, SMA package footprint. The increased current capacity (2A versus 1A) does not prevent substitution in 1A applications. The part operates within specification at lower current levels. This substitution is suitable when design margin or future scaling is desired.

Q: What is the difference between DO-214AC and SMA package designations?

A: DO-214AC and SMA refer to the same physical package. SMA is the industry standard designation; DO-214AC is the JEDEC equivalent. These terms are interchangeable for component selection purposes.

Q: Why does PMEG3010ER,115 have higher reverse leakage current (1500 µA) compared to SS13-TP (500 µA)?

A: Reverse leakage current varies by semiconductor technology and manufacturing process. The PMEG3010ER,115 exhibits higher leakage but maintains acceptable performance within its specified operating range. Higher leakage does not prevent substitution if circuit design accommodates this characteristic. Verification against specific application requirements is necessary.

Q: Can I substitute SS13-TP with SL13-M3/61T (1.5A rating)?

A: Yes. The SL13-M3/61T maintains 30V reverse voltage and DO-214AC, SMA package compatibility. The increased current rating (1.5A versus 1A) provides design margin without affecting performance in 1A applications. This substitution is acceptable for new designs.

Q: What is the significance of "Not For New Designs" product status?

A: Parts marked "Not For New Designs" are in end-of-life phase. Manufacturers may discontinue production without notice. These parts are suitable only for legacy system maintenance or repair where supply continuity is already established. New product designs should use parts with "Active" status to ensure long-term availability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance, matching the regulatory requirement of the original SS13-TP. Compliance status is verified for each part.

Q: What is the primary advantage of STPS1L30A over SS13-TP?

A: STPS1L30A provides superior forward voltage performance (395 mV @ 1A versus 550 mV @ 1A), resulting in lower power dissipation and improved efficiency in switching applications. Extended junction temperature rating (150°C maximum versus 125°C) provides additional thermal margin. Active product status ensures continued availability.

Q: Can package footprint differences affect PCB assembly?

A: Yes. PMEG3010ER,115 uses SOD-123W package, which differs from the DO-214AC, SMA footprint of SS13-TP. Substitution requires PCB layout modification and revalidation of assembly processes. Parts with identical package designations (DO-214AC, SMA) are preferred to avoid assembly changes.

Q: How do I verify that a substitute part is suitable for my specific application?

A: Compare the following parameters against your circuit requirements: reverse voltage rating (must equal or exceed 30V), average rectified current (must equal or exceed 1A), forward voltage drop (verify power dissipation impact), reverse leakage current (verify bias circuit performance), and operating temperature range (verify thermal environment compatibility). All substitute parts in this reference meet these baseline criteria for the SS13-TP application class.

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