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Vishay General Semiconductor - Diodes Division SMBJ90C-E3/5B
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- Part No.:
- SMBJ90C-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90C-E3/5B.pdf
- Description:
- TVS DIODE 90VWM 160VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,309
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Product details
Overview
SMBJ90C-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 90 V standoff voltage (VWM), 100 V minimum breakdown voltage (VBR), 146 V maximum clamping voltage (VC) at 4.1 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed on power rails and signal lines in industrial motor drives and telecom interface circuits.
For engineers reviewing the SMBJ90C-E3/5B datasheet, SMBJ90C-E3/5B pinout, SMBJ90C-E3/5B application, or SMBJ90C-E3/5B equivalent, key selection criteria include clamping performance under 10/1000 µs surge, thermal resistance (RθJA = 100 °C/W), unidirectional polarity marking, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (100–111 V), it avalanches to limit transient energy across protected nodes. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at VWM), while the SMB package supports high surge current handling without thermal runaway under repetitive 0.01% duty cycle pulses.
The device complies with ANSI/IEEE C62.35 standards for surge suppression and meets J-STD-020 MSL Level 1 moisture sensitivity. It is rated for -55 °C to +150 °C operating junction temperature and exhibits a +0.106 %/°C temperature coefficient of VBR - enabling predictable clamping behavior across automotive and industrial ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - maximum continuous reverse operating voltage before conduction begins; defines safe DC/AC working margin. |
| VBR (min) | 100 V at IT = 1.0 mA - guaranteed avalanche initiation threshold; ensures reliable triggering above system nominal voltage. |
| VC (max) | 146 V at IPPM = 4.1 A - peak clamped voltage during 10/1000 µs surge; determines worst-case stress on downstream ICs. |
| PPPM | 600 W - peak pulse power dissipation capability; enables protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω). |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance on standard 5.0 mm × 5.0 mm copper pads; informs derating above 25 °C ambient. |
| ID (max) | 1.0 µA at VWM - maximum reverse leakage; minimizes standby power loss and avoids false triggering in high-impedance circuits. |
| TJ max. | +150 °C - maximum junction temperature; supports operation in enclosed industrial enclosures without forced cooling. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated for J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower-potential node (e.g., ground or return path). | Enables unidirectional clamping: conducts only when cathode is >90 V above anode; must be routed to protected line's low-side reference. |
| Cathode | Current exit terminal in forward bias; marked by black band; connected to higher-potential node (e.g., supply rail or signal line). | Defines polarity-sensitive placement - incorrect orientation disables protection; band aligns with PCB silkscreen "K" or cathode indicator. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 combination wave surges up to 4 kV without degradation when mounted per recommended pad layout. |
| Glass passivated junction | Ensures stable VBR over lifetime and temperature; eliminates parameter drift due to humidity or surface contamination in harsh environments. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow without popcorn effect or delamination; eliminates pre-bake requirements in high-volume SMT lines. |
| RoHS-compliant, matte tin plating | Meets JESD 22-B102 solderability and JESD 201 Class 2 whisker resistance; ensures long-term reliability in vibration-prone industrial deployments. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients (e.g., inductive switch-off), reducing risk of latch-up or gate oxide damage in MOSFET drivers. |
Applications
| Industrial Motor Drives | Telecom Interface Protection |
|---|---|
|
Use Scenario: Protecting gate driver ICs and microcontrollers from flyback voltage spikes generated by relay coils and solenoid loads in PLC output modules. IC Role / Device Role / Timing Role: Shunt clamping element placed between VDD and GND rails upstream of LDOs and logic ICs. Use Value: Limits transient excursions to ≤146 V, preventing permanent damage to 100 V-rated gate drivers and maintaining functional safety integrity. |
Use Scenario: Safeguarding RS-485 transceivers and Ethernet PHYs against ESD and lightning-induced surges on field wiring in base station backhaul links. IC Role / Device Role / Timing Role: Primary-level surge suppressor on differential bus lines (A/B) and power inputs, coordinated with secondary TVS arrays. Use Value: Clamps 10/1000 µs surges to <150 V within 1 ns, preserving signal integrity and avoiding data corruption during multi-kV events. |
| Power Supply Input Stage | Automotive Body Control Modules |
|
Use Scenario: Secondary overvoltage protection on 24 V DC input rails of DIN-rail mounted AC/DC converters exposed to load dump transients. IC Role / Device Role / Timing Role: Standoff-rated clamp parallel to bulk capacitor, activated only during >90 V excursions exceeding primary regulator limits. Use Value: Absorbs up to 600 W for 1 ms without failure, extending capacitor life and eliminating need for oversized input filtering. |
Use Scenario: Protecting LIN bus transceivers and sensor signal conditioning circuits from battery reverse connection and jump-start surges in door module ECUs. IC Role / Device Role / Timing Role: Unidirectional shunt device on VBAT-supplied signal paths, leveraging cathode-band polarity for fail-safe orientation. Use Value: Withstands 100 A surge (8.3 ms half-sine) per AEC-Q101 qualification, ensuring compliance with ISO 7637-2 Pulse 5a requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90A-E3/5B | Identical electrical specs and package; differs only in part suffix convention - "A" denotes unidirectional, "C" is legacy alternate marking per Vishay internal coding. | No functional difference; both rated for same VWM/VBR/VC/PPPM and share identical thermal and mechanical characteristics. | Select SMBJ90C-E3/5B when matching legacy BOMs referencing "C" suffix; otherwise SMBJ90A-E3/5B is functionally interchangeable. |
| SMCJ90A-E3/57T | Same VWM (90 V) and VC (146 V), but in larger SMC (DO-214AB) package with higher RθJA (60 °C/W) and 1500 W PPPM rating. | Better thermal performance and surge margin; requires larger PCB footprint (7.11 mm × 6.22 mm vs. 4.57 mm × 3.94 mm) and different pad layout. | Choose SMCJ90A-E3/57T only when system-level surge testing exceeds 600 W or board layout allows SMC footprint; not drop-in compatible. |
Compared with SMBJ90C-E3/5B, SMBJ90A-E3/5B offers identical protection performance in the same SMB package, while SMCJ90A-E3/57T delivers higher surge capacity at the cost of board space and thermal design trade-offs - making SMBJ90C-E3/5B optimal for space-constrained 24–48 V industrial interfaces requiring proven 600 W compliance.
Availability
SMBJ90C-E3/5B is available at Aetrix Electronics and suitable for industrial motor drives, telecom interface protection, and automotive body control modules requiring stable component supply, RoHS-compliant sourcing, and full traceability from Vishay General Semiconductor.
Supply support for SMBJ90C-E3/5B includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, precision, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in demanding industrial, automotive, and telecom environments - delivering consistent clamping performance, low leakage, and robust surge survivability in compact surface-mount packages.
FAQ
What is the maximum clamping voltage of SMBJ90C-E3/5B under a 10/1000 µs surge?
The SMBJ90C-E3/5B has a maximum clamping voltage (VC) of 146 V when subjected to its rated peak pulse current of 4.1 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings. The SMBJ90C-E3/5B achieves this clamping performance while maintaining low incremental resistance and fast response time.
Is SMBJ90C-E3/5B RoHS-compliant and suitable for lead-free reflow?
Yes, SMBJ90C-E3/5B is RoHS-compliant (per EU Directive 2011/65/EU) and qualified for lead-free reflow soldering with a maximum peak temperature of 260 °C, meeting J-STD-020 MSL Level 1 requirements. Its matte tin-plated terminals comply with JESD 22-B102 for solderability and JESD 201 Class 2 for whisker resistance. The SMBJ90C-E3/5B can undergo standard SAC305 reflow profiles without pre-baking or special handling - essential for high-yield SMT manufacturing.
How does the unidirectional configuration of SMBJ90C-E3/5B affect circuit placement?
The SMBJ90C-E3/5B is unidirectional, meaning it conducts only when the cathode is at a higher potential than the anode - indicated by a visible black band on the cathode end. In practice, this requires correct orientation on the PCB: cathode connects to the protected line (e.g., 24 V rail), anode to ground or return. Reversing the SMBJ90C-E3/5B renders it non-functional for overvoltage protection. Unlike bidirectional variants, it does not suppress negative-going transients on AC-coupled lines.
What is the thermal resistance of SMBJ90C-E3/5B, and how does it impact power derating?
The SMBJ90C-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value directly governs power derating: at 75 °C ambient, its 5.0 W steady-state power dissipation drops to ~2.5 W. Engineers must apply derating curves from Figure 2 of Vishay document 88392 to ensure SMBJ90C-E3/5B remains below 150 °C junction temperature during sustained overload conditions.
Can SMBJ90C-E3/5B be used in automotive applications requiring AEC-Q101 qualification?
No - the SMBJ90C-E3/5B is commercial-grade and not AEC-Q101 qualified. For automotive use, Vishay specifies variants with "HE3" or "HM3" suffixes (e.g., SMBJ90AHE3_B/I), which undergo additional stress testing per AEC-Q101. While the SMBJ90C-E3/5B shares identical electrical parameters and package, its qualification status is limited to industrial and telecom applications. Always verify the full ordering code and datasheet revision when selecting for automotive-grade designs involving SMBJ90C-E3/5B.
SMBJ90C-E3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 160V
- Current - Peak Pulse (10/1000µs):
- 3.8A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ90C-E3/5B FAQ
1.How can I place an order for SMBJ90C-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90C-E3/5B on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMBJ90C-E3/5B reliable?
The price and inventory of SMBJ90C-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ90C-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ90C-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90C-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90C-E3/5B?
SMBJ90C-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90C-E3/5B order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMBJ90C-E3/5B?
For technical support, including SMBJ90C-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90C-E3/5B requirements.
6.How does Aetrix verify that SMBJ90C-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ90C-E3/5B products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMBJ90C-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ90C-E3/5B?
All SMBJ90C-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90C-E3/5B, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMBJ90C-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ90C-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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