SMBJ8.5CA-M3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ8.5CA-M3/52 is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the DO-214AA (SMB) package and provides transient overvoltage protection for general-purpose applications. The part is active in production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified based on matching electrical performance parameters, package compatibility, and operational specifications within the defined tolerance ranges.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	8.5	V
Voltage - Breakdown (Min)	9.44	V
Voltage - Clamping (Max) @ Ipp	14.4	V
Current - Peak Pulse (10/1000µs)	41.7	A
Power - Peak Pulse	600	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AA, SMB	-
Mounting Type	Surface Mount	-
Type	Zener	-
Bidirectional Channels	1	-

Substitute Part Grouping Explanation

Substitute parts for the SMBJ8.5CA-M3/52 are qualified based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

Voltage - Reverse Standoff (Typ): 8.5V ± tolerance
Voltage - Clamping (Max) @ Ipp: 14.3V to 14.5V range
Current - Peak Pulse (10/1000µs): 41.7A ± tolerance
Power - Peak Pulse: 600W
Package / Case: DO-214AA or SMB equivalent
Mounting Type: Surface Mount
Type: Zener, Bidirectional
RoHS3 Compliance: Required

Parts meeting these criteria are classified as direct electrical equivalents. Variations in breakdown voltage (within ±0.2V) and clamping voltage (within ±0.2V) remain within acceptable substitution parameters for TVS diode applications.

Parameter Comparison

Part Number	Manufacturer	Vwm (Typ) V	Vbr (Min) V	Vc (Max) V	Ipp A	Ppp W	Tj Range °C	Package	RoHS Status
SMBJ8.5CA-M3/52	Vishay	8.5	9.44	14.4	41.7	600	-55 to 150	DO-214AA	ROHS3
SMBJ8.5CD-M3/H	Vishay	8.5	9.57	14.3	42.2	600	-55 to 150	DO-214AA	ROHS3
SMBJ8.5CA-E3/52	Vishay	8.5	9.44	14.4	41.7	600	-55 to 150	DO-214AA	ROHS3
SMBJ8.5CA	EVVO Semi	8.5	9.44	14.4	41.7	600	-65 to 150	SMB	ROHS3
SMBJ8.5CA-13-F	Diodes Incorporated	8.5	9.44	14.4	41.7	600	-55 to 150	SMB	ROHS3
SMBJ8.5CA-TP	Micro Commercial Co	8.5	9.44	14.4	41.7	600	-55 to 175	DO-214AA	ROHS3
P6SMB10CA	Eaton	8.55	9.5	14.5	42.1	600	-55 to 150	SMB	RoHS

Engineering Selection Recommendations

Vishay Direct Equivalents (Preferred): SMBJ8.5CA-E3/52 and SMBJ8.5CD-M3/H are Vishay-manufactured parts with identical or near-identical electrical specifications to the primary part. Both maintain active product status, ROHS3 compliance, and unlimited moisture sensitivity rating. SMBJ8.5CA-E3/52 offers the highest inventory availability (60,100 units) and identical parameter matching.

Cross-Manufacturer Equivalents: SMBJ8.5CA-13-F (Diodes Incorporated), SMBJ8.5CA (EVVO Semi), and SMBJ8.5CA-TP (Micro Commercial Co) provide electrical equivalence with identical core specifications. All maintain ROHS3 compliance and active production status. SMBJ8.5CA-TP extends the upper operating temperature to 175°C, suitable for higher thermal environments. SMBJ8.5CA from EVVO Semi extends the lower operating temperature to -65°C for cold-environment applications.

Alternative Series: P6SMB10CA (Eaton) represents an alternative from the P6SMB series with marginally higher voltage ratings (8.55V standoff, 14.5V clamping) and peak current (42.1A). This part is suitable where slightly elevated voltage suppression is acceptable and maintains RoHS compliance with active product status.

Frequently Asked Questions (FAQ)

Q: Can SMBJ8.5CA-E3/52 directly replace SMBJ8.5CA-M3/52? A: Yes. Both parts share identical electrical specifications (8.5V standoff, 14.4V clamping, 41.7A peak pulse) and package format (DO-214AA). Both are Vishay-manufactured, ROHS3 compliant, and rated for -55°C to 150°C operation. The primary difference is packaging configuration (tape & reel variant).

Q: What is the difference between DO-214AA and SMB package designations? A: DO-214AA and SMB refer to the same physical package format for surface mount diodes. Both designations describe the identical component outline and land pattern. Parts specified as either format are mechanically and electrically interchangeable in PCB assembly.

Q: Is P6SMB10CA a suitable substitute despite higher voltage ratings? A: P6SMB10CA operates within acceptable substitution parameters with 8.55V standoff and 14.5V clamping voltage, representing marginal increases of 0.05V and 0.1V respectively. This part is suitable for applications where slightly elevated voltage suppression is acceptable. Verify circuit requirements before selection.

Q: Which substitute offers the widest operating temperature range? A: SMBJ8.5CA-TP (Micro Commercial Co) extends the upper junction temperature limit to 175°C, compared to 150°C for most alternatives. SMBJ8.5CA (EVVO Semi) extends the lower limit to -65°C. Select based on specific thermal environment requirements.

Q: Are all substitute parts RoHS compliant? A: All listed substitutes maintain RoHS compliance. SMBJ8.5CA-M3/52, SMBJ8.5CD-M3/H, SMBJ8.5CA-E3/52, SMBJ8.5CA, SMBJ8.5CA-13-F, and SMBJ8.5CA-TP are ROHS3 compliant. P6SMB10CA is RoHS compliant. Verify compliance documentation for specific procurement requirements.

Q: What inventory considerations apply to substitute selection? A: SMBJ8.5CA-E3/52 maintains the highest inventory (60,100 units), followed by SMBJ8.5CA-13-F (46,098 units). SMBJ8.5CA (5,415 units) and SMBJ8.5CA-TP (3,900 units) offer moderate availability. SMBJ8.5CD-M3/H (1,206 units) and P6SMB10CA (4,300 units) provide alternative sourcing. Confirm current stock status with suppliers for production requirements.

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