Request Quote
(Ships tomorrow)
SMBJ85C-E3/5B Equivalent & Substitute Parts
Part Overview
The SMBJ85C-E3/5B is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component operates in the 85V reverse standoff voltage class and is housed in a DO-214AA (SMB) surface mount package. The device is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for general-purpose transient protection applications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | SMBJ85C-E3/5B | — |
| Manufacturer | Vishay General Semiconductor - Diodes Division | — |
| Category | Transient Voltage Suppressors (TVS) | — |
| Type | Zener | — |
| Bidirectional Channels | 1 | — |
| Voltage - Reverse Standoff (Typ) | 85 | V |
| Voltage - Breakdown (Min) | 94.4 | V |
| Voltage - Clamping (Max) @ Ipp | 151 | V |
| Current - Peak Pulse (10/1000µs) | 4 | A |
| Power - Peak Pulse | 600 | W |
| Operating Temperature Range | -55 to 150 | °C (TJ) |
| Mounting Type | Surface Mount | — |
| Package / Case | DO-214AA, SMB | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
| Part Status | Obsolete | — |
Substitute Part Grouping Explanation
Substitution of the SMBJ85C-E3/5B is determined by strict alignment of the following electrical and mechanical parameters:
Critical Substitution Parameters:
- Voltage - Reverse Standoff (Typ): 85V
- Voltage - Breakdown (Min): 94.4V
- Package / Case: DO-214AA (SMB)
- Mounting Type: Surface Mount
- Bidirectional Channels: 1
- Type: Zener
Acceptable Variation Range:
- Voltage - Clamping (Max) @ Ipp: 137V to 151V (lower clamping voltage indicates improved performance margin)
- Current - Peak Pulse (10/1000µs): 4A to 4.4A (within 10% tolerance)
- Power - Peak Pulse: 600W (fixed)
- Operating Temperature: -55°C to 150°C minimum
Substitute Classification:
Group 1 - Direct Electrical Equivalents (85V Class, 137V-151V Clamp):
- SMBJ85CA-E3/5B (Vishay) — 137V clamp, 4.4A peak pulse
- SMBJ85CA (Meritek) — 137V clamp, 4.38A peak pulse
- SMBJ85CA-13 (Diodes Incorporated) — 137V clamp, 4.4A peak pulse
Group 2 - Non-Equivalent Parts (Different Voltage Class): The following parts operate in the 8.5V reverse standoff voltage class and are not substitutes for the 85V class SMBJ85C-E3/5B:
- 1SMB8.5CA TR13 PBFREE (Central Semiconductor Corp)
- SMBJ8.5CA-13-F (Diodes Incorporated)
- SMBJ8.5CA-HRA (Littelfuse Inc.)
- SMBJ8.5CA-TR (STMicroelectronics)
These 8.5V parts are listed in the original substitute field but represent a different product category and voltage rating.
Parameter Comparison
| Parameter | SMBJ85C-E3/5B (Main) | SMBJ85CA-E3/5B | SMBJ85CA (Meritek) | SMBJ85CA-13 |
|---|---|---|---|---|
| Manufacturer | Vishay | Vishay | Meritek | Diodes Inc. |
| Part Status | Obsolete | Active | Active | Discontinued at DiGi Electronics |
| Voltage - Reverse Standoff (Typ) | 85V | 85V | 85V | 85V |
| Voltage - Breakdown (Min) | 94.4V | 94.4V | 94.4V | 94.4V |
| Voltage - Clamping (Max) @ Ipp | 151V | 137V | 137V | 137V |
| Current - Peak Pulse (10/1000µs) | 4A | 4.4A | 4.38A | 4.4A |
| Power - Peak Pulse | 600W | 600W | 600W | 600W |
| Operating Temperature | -55 to 150°C | -55 to 150°C | -55 to 150°C | -55 to 150°C |
| Package / Case | DO-214AA, SMB | DO-214AA, SMB | DO-214AA (SMB) | DO-214AA, SMB |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | RoHS non-compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Inventory Status | 898 Pcs | 4332 Pcs | 145100 Pcs | 4300 Pcs |
Engineering Selection Recommendations
Primary Recommendation: SMBJ85CA-E3/5B (Vishay)
This part is the direct successor to the obsolete SMBJ85C-E3/5B. It maintains identical electrical specifications within the 85V reverse standoff class, operates at 137V clamping voltage (14V improvement over the original 151V), and carries active product status. The part is ROHS3 compliant and manufactured by the original equipment supplier. Inventory availability is substantial at 4332 pieces.
Secondary Recommendation: SMBJ85CA (Meritek)
This alternative operates at the same 85V reverse standoff voltage with 137V clamping and 4.38A peak pulse current. The part is ROHS3 compliant and maintains full compatibility with the DO-214AA (SMB) package footprint. Inventory availability is highest among all alternatives at 145100 pieces, supporting long-term supply chain stability.
Not Recommended: SMBJ85CA-13 (Diodes Incorporated)
While electrically equivalent, this part is marked as discontinued at DiGi Electronics and carries RoHS non-compliant status, creating regulatory and supply chain risk for new designs.
Not Recommended: 8.5V Class Parts
The parts designated 1SMB8.5CA TR13 PBFREE, SMBJ8.5CA-13-F, SMBJ8.5CA-HRA, and SMBJ8.5CA-TR operate in a different voltage class (8.5V reverse standoff) and are not electrical substitutes for the 85V SMBJ85C-E3/5B.
Frequently Asked Questions (FAQ)
Q: Can I use SMBJ85CA-E3/5B as a direct replacement for SMBJ85C-E3/5B?
A: Yes. Both parts operate at 85V reverse standoff voltage, 94.4V minimum breakdown voltage, and are housed in DO-214AA (SMB) surface mount packages. The SMBJ85CA-E3/5B features improved clamping performance at 137V versus the original 151V, representing a performance enhancement. Active product status and ROHS3 compliance make this the recommended substitute.
Q: What is the difference between the 85V and 8.5V TVS diode series?
A: These represent distinct product categories with a tenfold voltage difference. The SMBJ85 series operates at 85V reverse standoff voltage for high-voltage transient protection. The SMBJ8.5 series operates at 8.5V reverse standoff voltage for low-voltage applications. They are not interchangeable and serve different circuit protection requirements.
Q: Are all substitute parts ROHS3 compliant?
A: No. SMBJ85CA-E3/5B (Vishay) and SMBJ85CA (Meritek) are ROHS3 compliant. SMBJ85CA-13 (Diodes Incorporated) is RoHS non-compliant. For applications requiring regulatory compliance, select only ROHS3-compliant alternatives.
Q: Does the lower clamping voltage of SMBJ85CA (137V vs. 151V) affect circuit protection?
A: Lower clamping voltage indicates improved transient suppression performance. The SMBJ85CA clamps at 137V compared to the original 151V, providing better protection margin. This is a performance improvement, not a limitation.
Q: What is the significance of the DO-214AA (SMB) package designation?
A: DO-214AA and SMB are equivalent designations for the same surface mount package. All recommended substitutes use this identical package, ensuring mechanical and thermal compatibility with existing PCB layouts and reflow processes.
Q: Which substitute offers the best long-term supply availability?
A: SMBJ85CA (Meritek) demonstrates the highest inventory level at 145100 pieces, supporting extended production runs and long-term supply chain stability. SMBJ85CA-E3/5B (Vishay) offers 4332 pieces with active status from the original manufacturer.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts