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Diodes Incorporated SMBJ90A-13-F
- Part No.:
- SMBJ90A-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90A-13-F.pdf
- Description:
- TVS DIODE 90VWM 146VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:2,183
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Product details
Overview
SMBJ90A-13-F from Diodes Incorporated is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with 90V reverse standoff voltage, 100V minimum breakdown voltage, 146V maximum clamping voltage at 4.1A peak pulse current, and SMB package. It protects DC power rails and signal lines in industrial motor drives, telecom power supplies, and automotive body control modules against ESD and lightning-induced surges.
For engineers reviewing the SMBJ90A-13-F datasheet, SMBJ90A-13-F pinout, SMBJ90A-13-F application, or SMBJ90A-13-F equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, peak pulse current capability under 8.3ms surge waveforms, thermal derating above +25°C, and RoHS-compliant matte tin plating for lead-free reflow compatibility.
Technical Context
This TVS operates as a unidirectional avalanche clamp: forward-biased during positive transients on the anode, with cathode band marking polarity. Its glass-passivated die ensures stable breakdown characteristics and low leakage (<5.0µA at 90V VRWM) across -55°C to +150°C operating range.
The device responds to transient events with sub-nanosecond turn-on time, limiting voltage to ≤146V at 4.1A IPP while dissipating up to 600W non-repetitive pulse power. Thermal derating follows 4.8W/°C above +25°C ambient, supporting reliable operation in high-temperature PCB environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - sustains single 8.3ms half-sine surge without failure |
| Reverse Standoff Voltage | 90V - maximum continuous DC voltage before significant leakage |
| Breakdown Voltage | 100–115.5V @ 1mA - defines onset of avalanche conduction |
| Clamping Voltage | 146V @ 4.1A IPP - limits transient voltage seen by downstream circuitry |
| Peak Pulse Current | 4.1A @ 8.3ms - quantifies surge energy handling per IEC 61000-4-5 |
| Leakage Current | <5.0µA @ 90V - ensures minimal standby power loss in always-on systems |
| Operating Temperature | -55°C to +150°C - supports under-hood automotive and industrial enclosure use |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case rated UL 94V-0, 0.1g weight, matte tin-plated terminals solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (forward direction) | Connected to protected line; conducts surge current toward ground when voltage exceeds VBR |
| Cathode | Reference terminal (marked with band) | Connected to system ground or lower-potential rail; establishes unidirectional clamping polarity |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Ensures stable VBR over temperature and lifetime, minimizing parameter drift in harsh environments |
| 600W peak pulse rating | Provides robust protection against IEC 61000-4-5 Level 4 (4kV/2Ω) surges on 24V/48V industrial buses |
| RoHS-compliant matte tin finish | Enables compatibility with Pb-free reflow profiles (peak 260°C) without whisker risk or solderability degradation |
| UL 94V-0 flammability rating | Prevents flame propagation during catastrophic failure, meeting safety requirements for enclosed power systems |
| Level 1 moisture sensitivity | Eliminates need for dry-packaging or bake-out prior to SMT assembly, reducing manufacturing cost |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of 48V DC bus inputs against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between input rail and chassis ground. Use Value: Limits transient voltage to ≤146V, preventing damage to upstream rectifiers and downstream DC-DC controllers rated for 150V max input. |
Use Scenario: Surge suppression on -48V telecom battery backup lines exposed to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Cathode-to-ground configuration clamps negative-going transients on the return path. Use Value: Maintains <5.0µA leakage at nominal -48V, avoiding battery drain while clamping 4.1A surges within 1ns response time. |
| Automotive Body Control Modules | Factory Automation I/O Cards |
Use Scenario: Input protection for LIN bus transceivers connected to external sensors in engine bay harnesses. IC Role / Device Role / Timing Role: Anode-to-LIN line, cathode-to-ground, suppressing ESD and ISO 7637-2 pulse 1/2a. Use Value: Withstands -100V/100ms pulses and ±8kV contact ESD per ISO 10605, preserving transceiver integrity. |
Use Scenario: Protection of 24V digital input channels receiving signals from proximity switches and solenoid drivers. IC Role / Device Role / Timing Role: Clamp installed between field input and PLC input buffer, referenced to common ground. Use Value: Clamps 8.3ms surges up to 4.1A without latch-up, enabling >100,000 surge cycles per IEC 61000-4-4 compliance. |
Availability
SMBJ90A-13-F is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and automotive body control modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ90A-13-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
SMBJ90A-13-F belongs to Diodes' SMBJ series of surface-mount TVS diodes, engineered specifically for high-energy transient suppression in space-constrained industrial and automotive power systems where reliability under thermal stress is critical.
FAQ
What is the polarity configuration of SMBJ90A-13-F?
SMBJ90A-13-F is a unidirectional TVS diode with cathode marked by a band on the package body. It conducts only when the anode is driven positive relative to the cathode, making it suitable for protecting positive-rail circuits. The "A" suffix confirms unidirectional construction, distinct from bi-directional "C" variants like SMBJ90CA-13-F.
How does SMBJ90A-13-F compare to SMAJ90A in surge handling?
SMBJ90A-13-F delivers 600W peak pulse power, whereas SMAJ90A is rated for 400W. This 50% higher power rating allows SMBJ90A-13-F to handle larger 8.3ms surges-up to 4.1A versus 2.7A for SMAJ90A-without exceeding clamping voltage limits, making it preferred for high-energy industrial applications.
Can SMBJ90A-13-F be used in parallel for higher current handling?
No-parallel connection of TVS diodes is not recommended due to mismatched breakdown voltages causing uneven current sharing and premature failure of the lower-VBR unit. For higher surge ratings, select a single higher-power device such as SMBJ110A (600W, 3.4A IPP) or verify layout with Diodes Incorporated's application note AN-2001 on multi-device configurations.
What is the thermal resistance junction-to-lead (RθJL) for SMBJ90A-13-F?
The SMBJ90A-13-F has a typical junction-to-lead thermal resistance of 20.8°C/W, derived from its 5.0W steady-state power dissipation rating at TL = +75°C. This value assumes proper PCB copper pour (≥1 cm² per lead) and is critical for calculating maximum allowable ambient temperature in sealed enclosures.
SMBJ90A-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 4.1A
- 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:
- SMB
SMBJ90A-13-F FAQ
1.How can I place an order for SMBJ90A-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90A-13-F 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 SMBJ90A-13-F reliable?
The price and inventory of SMBJ90A-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ90A-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ90A-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90A-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90A-13-F?
SMBJ90A-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90A-13-F 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 SMBJ90A-13-F?
For technical support, including SMBJ90A-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90A-13-F requirements.
6.How does Aetrix verify that SMBJ90A-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ90A-13-F 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 SMBJ90A-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ90A-13-F?
All SMBJ90A-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90A-13-F, 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 SMBJ90A-13-F part is unused and in its original packaging.
Return procedure for SMBJ90A-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ90A-13-F Tags
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