SMBJ36CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ36CE3/TR13 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional zener diode operates with a 36V reverse standoff voltage and provides clamping at 64.3V maximum, with a peak pulse current rating of 9.3A. The component is housed in a DO-214AA (SMB) package and is supplied in Tape & Reel (TR) packaging format.

The SMBJ36CE3/TR13 maintains Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified based on matching electrical parameters, mechanical compatibility, and regulatory compliance to support component sourcing flexibility and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	36	V
Voltage - Breakdown (Min)	40	V
Voltage - Clamping (Max) @ Ipp	64.3	V
Current - Peak Pulse (10/1000µs)	9.3	A
Power - Peak Pulse	600	W
Operating Temperature Range	-65 to 150	°C (TJ)
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Bidirectional Channels	1	—
Type	Zener	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SMBJ36CE3/TR13 are qualified based on the following critical parameters:

Electrical Compatibility Criteria:

Voltage - Reverse Standoff (Typ): 36V
Voltage - Breakdown (Min): 40V
Power - Peak Pulse: 600W
Bidirectional Channels: 1
Type: Zener

Mechanical Compatibility Criteria:

Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount

Regulatory & Environmental Criteria:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Status: REACH Unaffected

Substitute parts are grouped into two categories based on voltage clamping characteristics:

Category A - Clamping Voltage 58.1V (±10% tolerance band): Parts with clamping voltage between 52.3V and 63.9V are suitable for applications where the SMBJ36CE3/TR13's 64.3V clamping specification can accommodate minor variations. These include SMBJ36CA (MDD), SMBJ36CA-13-F (Diodes Incorporated), SMBJ36CA-TP (Micro Commercial Co), SMBJ36CA-TR (STMicroelectronics), and SZ1SMB36CAT3G (Littelfuse Inc.).

Category B - Clamping Voltage 76V (higher clamping specification): The SM6T42CAY (STMicroelectronics) operates with a 76V clamping voltage and 52A peak pulse current (8/20µs), providing enhanced transient suppression capability. This part is suitable for applications requiring higher energy absorption or where the circuit design permits elevated clamping voltages.

Parameter Comparison

Parameter	SMBJ36CE3/TR13 (Main)	SMBJ36CA (MDD)	SMBJ36CA-13-F (Diodes Inc.)	SMBJ36CA-TP (MCC)	SMBJ36CA-TR (STMicro)	SZ1SMB36CAT3G (Littelfuse)	SM6T42CAY (STMicro)
Voltage - Reverse Standoff (Typ)	36V	36V	36V	36V	36V	36V	36V
Voltage - Breakdown (Min)	40V	40V	40V	40V	40V	40V	40V
Voltage - Clamping (Max) @ Ipp	64.3V	58.1V	58.1V	58.1V	58.1V	58.1V	76V
Current - Peak Pulse (10/1000µs)	9.3A	10.4A	10.3A	10.3A	10.3A	10.3A	52A (8/20µs)
Power - Peak Pulse	600W	600W	600W	600W	600W	600W	600W
Operating Temperature Range	-65 to 150°C	-50 to 150°C	-55 to 150°C	-55 to 175°C	-55 to 150°C	-65 to 150°C	-55 to 150°C
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Manufacturer	Microchip Technology	MDD	Diodes Incorporated	Micro Commercial Co	STMicroelectronics	Littelfuse Inc.	STMicroelectronics
Product Status	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

For Direct Replacement (Clamping Voltage 58.1V Category):

The following parts are suitable for direct substitution in applications where the SMBJ36CE3/TR13 is currently specified:

SMBJ36CA-TR (STMicroelectronics): Active product status with 58,262 units in stock. Operates within -55 to 150°C temperature range. TRANSIL™ series designation indicates established product lineage. RoHS3 compliant with MSL 1.
SMBJ36CA-13-F (Diodes Incorporated): Active product status with 125,400 units in stock. Operates within -55 to 150°C temperature range. High inventory availability supports supply chain continuity. RoHS3 compliant with MSL 1.
SZ1SMB36CAT3G (Littelfuse Inc.): Active product status with 20,300 units in stock. Operates within -65 to 150°C temperature range, matching the SMBJ36CE3/TR13 lower temperature limit. AEC-Q101 automotive qualification provides additional reliability assurance. RoHS3 compliant with MSL 1.
SMBJ36CA-TP (Micro Commercial Co): Active product status with 1,551 units in stock. Extended operating temperature range of -55 to 175°C provides thermal margin. RoHS3 compliant with MSL 1.
SMBJ36CA (MDD): Active product status with 16,921 units in stock. Operates within -50 to 150°C temperature range. RoHS3 compliant with MSL 1.

For Enhanced Transient Suppression (Clamping Voltage 76V Category):

SM6T42CAY (STMicroelectronics): Active product status with 2,200 units in stock. Operates within -55 to 150°C temperature range. AEC-Q101 automotive qualification and TRANSIL™ series designation indicate automotive-grade reliability. Higher clamping voltage (76V) and peak pulse current (52A at 8/20µs) provide enhanced energy absorption capability. RoHS3 compliant with MSL 1. Selection of this part requires circuit design verification to confirm compatibility with the elevated clamping voltage specification.

All substitute parts maintain Active product status, RoHS3 compliance, and MSL 1 (Unlimited) moisture sensitivity rating, ensuring regulatory and environmental compatibility with the original SMBJ36CE3/TR13 specification.

Frequently Asked Questions (FAQ)

Q: Can SMBJ36CA parts with 58.1V clamping voltage replace the SMBJ36CE3/TR13 with 64.3V clamping voltage?

A: Yes. The SMBJ36CA variants operate within the same 36V reverse standoff and 40V breakdown voltage specifications. The 58.1V clamping voltage is lower than the SMBJ36CE3/TR13's 64.3V specification, which results in more aggressive voltage suppression. This is acceptable in applications where the circuit design permits lower clamping voltages. Circuit analysis is required to confirm compatibility with the specific application's transient voltage profile.

Q: What is the difference between the 10/1000µs and 8/20µs pulse specifications?

A: These parameters define the test pulse waveform used to measure peak pulse current. The SMBJ36CE3/TR13 and most SMBJ36CA variants use the 10/1000µs waveform, which represents a slower transient event. The SM6T42CAY uses the 8/20µs waveform, which represents a faster transient event typical of power line disturbances. Both waveforms are standard test conditions; the 8/20µs waveform generally produces higher peak current values for the same energy level.

Q: Are all substitute parts available in Tape & Reel (TR) packaging?

A: No. The SMBJ36CA (MDD) does not specify packaging format in the provided data. SMBJ36CA-13-F is supplied in Cut Tape (CT) & Digi-Reel® format. SMBJ36CA-TP, SMBJ36CA-TR, and SM6T42CAY are supplied in Tape & Reel (TR) format. Packaging format selection depends on assembly process requirements and should be confirmed during component procurement.

Q: What is the significance of AEC-Q101 qualification on the SZ1SMB36CAT3G and SM6T42CAY?

A: AEC-Q101 is an automotive electronics qualification standard that establishes reliability and quality requirements for semiconductor components used in automotive applications. Parts bearing this qualification have undergone additional testing and validation beyond standard commercial specifications. Selection of AEC-Q101 qualified parts is appropriate for applications requiring automotive-grade reliability assurance.

Q: Can the SM6T42CAY with 76V clamping voltage be used in place of the SMBJ36CE3/TR13?

A: The SM6T42CAY is electrically compatible from a standoff and breakdown voltage perspective. However, the higher clamping voltage (76V versus 64.3V) means the circuit will experience higher voltage transients before suppression occurs. This part is suitable only if circuit design analysis confirms that the protected circuitry can tolerate the elevated clamping voltage without damage or performance degradation.

Q: What is the operating temperature range difference between substitute parts?

A: The SMBJ36CE3/TR13 operates from -65 to 150°C. Most SMBJ36CA variants operate from -55 to 150°C, representing a 10°C reduction in lower temperature limit. The SMBJ36CA-TP extends to 175°C on the upper limit. The SZ1SMB36CAT3G matches the -65 to 150°C range. Selection should account for the application's thermal environment and any temperature-dependent performance requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain RoHS3 compliance and REACH Unaffected status, ensuring regulatory compatibility with the original SMBJ36CE3/TR13 specification.

Q: What inventory levels are available for each substitute part?

A: Inventory levels vary significantly: SMBJ36CA-13-F (Diodes Incorporated) offers the highest availability at 125,400 units. SMBJ36CA (MDD) provides 16,921 units. SZ1SMB36CAT3G (Littelfuse) offers 20,300 units. SMBJ36CA-TR (STMicroelectronics) provides 58,262 units. SM6T42CAY (STMicroelectronics) offers 2,200 units. SMBJ36CA-TP (Micro Commercial Co) provides 1,551 units. Inventory levels should be confirmed at time of procurement.

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