B150-13 Schottky Diode Equivalent & Substitute Parts

Part Overview

The B150-13 is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 50 V DC reverse voltage and 1 A average rectified current in a surface mount SMA (DO-214AC) package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design support and procurement.

The B150-13 operates across a junction temperature range of -65°C to 150°C with fast recovery characteristics suitable for high-frequency switching applications. Equivalent parts maintain identical electrical specifications, while substitute parts provide functional alternatives with minor parameter variations acceptable for most applications.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	700 mV @ 1 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	500 µA @ 50 V	—
Capacitance @ Vr, F	110 pF @ 4V, 1MHz	—
Package / Case	DO-214AC, SMA	—
Operating Temperature - Junction	-65°C to 150°C	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the B150-13 is determined by the following critical parameters:

Electrical Compatibility Criteria:

Technology type (Schottky)
Voltage rating (DC reverse voltage must equal or exceed 50 V)
Current rating (1 A average rectified current)
Forward voltage drop (700 mV @ 1 A nominal)
Recovery speed (Fast Recovery ≤ 500ns)

Mechanical Compatibility Criteria:

Package type (DO-214AC / SMA surface mount)
Mounting type (Surface Mount)
Moisture sensitivity (MSL 1 or equivalent)

Substitute parts are grouped into two categories:

Parametric Equivalents — Parts with identical electrical specifications (50 V, 1 A, 700 mV forward voltage) that differ only in product status or packaging format. These are direct replacements.
Manufacturer Recommended Substitutes — Parts with reduced voltage ratings (40 V) or alternative forward voltage characteristics that function in applications where the full 50 V rating is not required. These are functional alternatives suitable for designs with adequate voltage margin.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io	Vf @ 1A	Reverse Leakage @ Vr	Capacitance @ 4V, 1MHz	Tj (Operating)	Product Status	RoHS Status
B150-13	Diodes Incorporated	50 V	1 A	700 mV	500 µA @ 50 V	110 pF	-65°C to 150°C	Discontinued	Non-compliant
B150-13-F	Diodes Incorporated	50 V	1 A	700 mV	500 µA @ 50 V	110 pF	-65°C to 150°C	Active	ROHS3 Compliant
B150Q-13-F	Diodes Incorporated	50 V	1 A	700 mV	500 µA @ 40 V	110 pF	-65°C to 150°C	Active	ROHS3 Compliant
CDBA140LL-HF	Comchip Technology	40 V	1 A	350 mV	1 mA @ 40 V	130 pF	-50°C to 100°C	Active	ROHS3 Compliant
MBRA140T3G	onsemi	40 V	1 A	550 mV	500 µA @ 40 V	—	-55°C to 125°C	Active	ROHS3 Compliant
SS14	SMC Diode Solutions	100 V	1 A	850 mV	500 µA @ 100 V	50 pF	-55°C to 150°C	Active	ROHS3 Compliant
SS14-LTP	Micro Commercial Co	40 V	1 A	500 mV	500 µA @ 40 V	52 pF	-55°C to 125°C	Active	ROHS3 Compliant
SS14-M3/5AT	Vishay General Semiconductor - Diodes Division	40 V	1 A	500 mV	200 µA @ 40 V	—	-65°C to 150°C	Active	ROHS3 Compliant
SS14-M3/61T	Vishay General Semiconductor - Diodes Division	40 V	1 A	500 mV	200 µA @ 40 V	—	-65°C to 150°C	Active	ROHS3 Compliant
SS15	Taiwan Semiconductor Corporation	50 V	1 A	750 mV	200 µA @ 50 V	—	-55°C to 150°C	Active	ROHS3 Compliant
STPS140A	STMicroelectronics	40 V	1 A	550 mV	12 µA @ 40 V	—	—	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalent):

The B150-13-F is the primary direct replacement for the B150-13. Both parts are manufactured by Diodes Incorporated with identical electrical specifications (50 V, 1 A, 700 mV forward voltage). The B150-13-F is currently active in production and ROHS3 compliant, addressing the RoHS non-compliance status of the original part. Packaging is available in Cut Tape and Digi-Reel formats with 25,400 units in stock.

The B150Q-13-F provides an automotive-qualified alternative with AEC-Q101 certification and identical electrical ratings. This part is suitable for applications requiring automotive-grade components and is available in Tape & Reel packaging with 40,100 units in stock.

Functional Substitutes (40 V Rating):

For applications where the full 50 V reverse voltage rating is not required, the following 40 V rated alternatives are available:

SS14-M3/5AT and SS14-M3/61T (Vishay) — Both rated 40 V, 1 A with 500 mV forward voltage and extended temperature range (-65°C to 150°C). These parts feature lower reverse leakage (200 µA @ 40 V) compared to the B150-13.
SS14-LTP (Micro Commercial Co) — 40 V, 1 A rated with 500 mV forward voltage and 52 pF capacitance. Operating temperature range is -55°C to 125°C.
MBRA140T3G (onsemi) — 40 V, 1 A rated with 550 mV forward voltage and 500 µA reverse leakage. Operating temperature range is -55°C to 125°C.
STPS140A (STMicroelectronics) — 40 V, 1 A rated with 550 mV forward voltage and exceptionally low reverse leakage (12 µA @ 40 V). This part offers superior leakage performance.
CDBA140LL-HF (Comchip Technology) — 40 V, 1 A rated with 350 mV forward voltage (lowest among substitutes) and 1 mA reverse leakage. Operating temperature range is -50°C to 100°C.

Higher Voltage Alternative:

The SS14 (SMC Diode Solutions) is rated 100 V, 1 A and provides voltage margin beyond the original 50 V specification. Forward voltage is 850 mV at 1 A. This part is suitable for applications requiring enhanced voltage headroom.

50 V Rated Alternative:

The SS15 (Taiwan Semiconductor Corporation) is rated 50 V, 1 A with 750 mV forward voltage and lower reverse leakage (200 µA @ 50 V). Operating temperature range is -55°C to 150°C. This part provides a 50 V alternative to the B150-13-F.

All recommended substitutes are ROHS3 compliant and MSL 1 rated. Selection should be based on specific application requirements for voltage margin, forward voltage drop, reverse leakage, and operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the B150-13-F be used as a direct replacement for the B150-13?

A: Yes. The B150-13-F is a parametric equivalent with identical electrical specifications (50 V, 1 A, 700 mV forward voltage) and the same DO-214AC/SMA package. The primary difference is product status (active vs. discontinued) and RoHS compliance (ROHS3 vs. non-compliant). No circuit modifications are required.

Q: What is the difference between the B150-13-F and B150Q-13-F?

A: Both parts are manufactured by Diodes Incorporated with identical electrical ratings (50 V, 1 A, 700 mV). The B150Q-13-F includes automotive-grade qualification (AEC-Q101) and is supplied in Tape & Reel packaging. The B150-13-F is available in Cut Tape and Digi-Reel formats. Selection depends on packaging requirements and automotive qualification needs.

Q: Can I use a 40 V rated diode in place of the 50 V B150-13?

A: A 40 V rated substitute is acceptable only if the application circuit provides adequate voltage margin and the maximum reverse voltage across the diode does not exceed 40 V under any operating condition, including transient overvoltage. The B150-13 is rated for 50 V; substitution with a 40 V part reduces safety margin. Verify circuit design before substitution.

Q: What is the significance of forward voltage differences among substitutes?

A: Forward voltage drop affects power dissipation and circuit efficiency. The B150-13 specifies 700 mV @ 1 A. Substitutes range from 350 mV (CDBA140LL-HF) to 850 mV (SS14). Lower forward voltage reduces heat generation; higher forward voltage increases power loss. Select based on thermal design requirements and efficiency targets.

Q: Why do some substitutes have lower reverse leakage current?

A: Reverse leakage current varies by semiconductor process and manufacturing technology. The B150-13 specifies 500 µA @ 50 V. Substitutes with lower leakage (e.g., STPS140A at 12 µA @ 40 V) offer improved performance in low-power or high-impedance circuits. Higher leakage may be acceptable in high-current applications where leakage is negligible relative to forward current.

Q: Are all substitute parts RoHS compliant?

A: Yes. All recommended substitute parts are ROHS3 compliant. The original B150-13 is RoHS non-compliant. If RoHS compliance is a design requirement, the B150-13-F or B150Q-13-F are the appropriate choices.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Cut Tape (CT) and Digi-Reel packaging are used for lower-volume orders and manual assembly. Tape & Reel (TR) packaging is used for high-volume automated assembly. Both formats contain the same component; packaging selection depends on production volume and assembly equipment. Electrical specifications are identical.

Q: Can the SS14 (100 V rated) be used instead of the B150-13?

A: Yes, the SS14 is functionally compatible with higher voltage margin (100 V vs. 50 V). However, forward voltage is higher (850 mV vs. 700 mV), resulting in increased power dissipation. The SS14 is suitable for applications where voltage headroom is prioritized over efficiency. Verify thermal design accommodates the higher forward voltage drop.

Q: What is the operating temperature range difference between substitutes?

A: The B150-13 operates from -65°C to 150°C. Some substitutes have narrower ranges (e.g., CDBA140LL-HF: -50°C to 100°C). If the application requires operation at the full -65°C to 150°C range, select substitutes with matching or wider temperature specifications (e.g., B150-13-F, SS14-M3/5AT, SS14-M3/61T).

Q: Is the B150Q-13-F suitable for automotive applications?

A: Yes. The B150Q-13-F carries AEC-Q101 automotive qualification and is rated for automotive-grade reliability. It is suitable for automotive and industrial applications requiring qualified components. The standard B150-13-F does not carry automotive qualification.

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