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Taiwan Semiconductor Corporation 5.0SMDJ33A
- Part No.:
- 5.0SMDJ33A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5.0SMDJ33A.pdf
- Description:
- 5000W, 38.7V, 5%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:9,017
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Product details
Overview
5.0SMDJ33A from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and I/O interfaces. It delivers 5000W peak pulse power at 10/1000μs, clamps to 53.3V at 93.9A, and features a 33V working standoff voltage with <1.0ps response time. Used in AC/DC power supplies and industrial control I/O protection.
For engineers reviewing the 5.0SMDJ33A datasheet, 5.0SMDJ33A pinout, 5.0SMDJ33A application, or 5.0SMDJ33A equivalent, key selection criteria include clamping voltage (53.3V), peak pulse current (93.9A), unidirectional configuration, DO-214AB package thermal performance (RθJL = 16°C/W), and moisture sensitivity level 1 compliance.
Technical Context
The 5.0SMDJ33A employs a stacked-die construction in a DO-214AB (SMC) package to achieve high surge robustness while maintaining fast transient response (<1.0ps). Its unidirectional architecture provides low forward voltage (5V @ 100A) and precise breakdown symmetry between 36.7V (min) and 40.6V (max) at 1mA test current.
Thermal design is enabled by verified junction-to-lead resistance of 16°C/W on a 16mm × 16mm copper pad, supporting steady-state dissipation up to 6.25W at 75°C lead temperature. The device operates across –55°C to +175°C junction range and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 36.7 V / 40.6 V - Verified breakdown range at 1 mA, ensuring reliable turn-on margin above VWM |
| VC @ IPP | 53.3 V - Clamped voltage at 93.9 A peak pulse, defining protected circuit voltage ceiling during surge |
| PPPPM | 5000 W - Peak pulse power handling per 10/1000 μs waveform, critical for lightning/surge immunity |
| RθJL | 16 °C/W - Junction-to-lead thermal resistance on standard PCB pad, enabling thermal derating calculations |
| TJ Range | –55°C to +175°C - Full operational junction temperature span for under-hood, industrial, and power supply environments |
Pinout & Package
Package: DO-214AB (SMC) - Surface-mount plastic case with matte tin-plated leads, polarity indicated by cathode band, UL 94V-0 rated molding compound, weight ≈0.300g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path input | Connected to lower-potential side of protected line; enables unidirectional clamping to ground |
| Cathode | Reverse-biased surge return path | Connected to higher-potential rail (e.g., VIN); conducts surge current to ground when VAK exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Peak pulse power rating | 5000 W at 10/1000 μs - Enables protection against IEC 61000-4-5 Level 4 surges without derating |
| Clamping ratio (VC/VBR) | 1.31 - Low overvoltage margin ensures downstream ICs remain within absolute maximum ratings |
| Response time | <1.0 ps - Faster than most ESD events, minimizing voltage overshoot before clamping engages |
| Moisture sensitivity | Level 1 per J-STD-020 - No bake requirement prior to reflow, simplifying SMT assembly |
Applications
| AC/DC Power Input Protection | Industrial I/O Interface Protection |
|---|---|
Use Scenario: Protecting primary-side rectifier outputs and secondary-side DC bus rails in switch-mode power supplies against lightning-induced surges and load dump transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between DC rail and chassis/earth ground to clamp positive-going transients. Use Value: Limits rail voltage to ≤53.3V during 93.9A surges, preventing damage to downstream regulators, controllers, and bulk capacitors. | Use Scenario: Shielding programmable logic controller (PLC) digital input channels from field-wiring induced transients in factory automation systems. IC Role / Device Role / Timing Role: Standoff protector on 24V DC input lines, absorbing energy from inductive kickback and EFT bursts. Use Value: Maintains signal integrity by suppressing >1kV transients while adding <0.1µA leakage at 33V, avoiding false triggering. |
| Telecom Power Feeds | Motor Drive Control Signal Lines |
Use Scenario: Safeguarding PoE (Power over Ethernet) midspan injectors and powered devices against cable-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS used on 48V DC feed lines, leveraging low clamping to preserve IEEE 802.3af/at compliance margins. Use Value: Withstands repeated 5000W pulses without parameter shift, ensuring long-term reliability in outdoor telecom cabinets. | Use Scenario: Protecting isolated gate driver inputs and encoder feedback lines in variable-frequency drives exposed to motor commutation noise. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor on differential RS-485 or incremental encoder lines referenced to 5V/3.3V logic rails. Use Value: Delivers 53.3V clamping with minimal parasitic capacitance, preserving signal edge rates up to 10 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A | Lower peak power (600W), same DO-214AA package, VC = 53.3V at 11.8A | Not suitable for IEC 61000-4-5 Level 4; limited to low-energy ESD/EFT | Select 5.0SMDJ33A when 5000W surge immunity is required; SMBJ33A only for board-level ESD. |
| SMCJ33A | Same 5000W rating and DO-214AB package, but VC = 53.3V at 93.9A - identical clamping behavior | Functionally interchangeable in layout and electrical performance; differs only in manufacturer branding and minor leakage spec | SMCJ33A is a direct functional alternative with matching surge capability and thermal specs. |
Compared with SMBJ33A and SMCJ33A, the 5.0SMDJ33A offers identical clamping and surge rating to SMCJ33A but significantly higher energy handling than SMBJ33A-making it suitable for mains-connected equipment where full lightning surge immunity is mandated.
Availability
5.0SMDJ33A is available at Aetrix Electronics and suitable for AC/DC power supplies, industrial I/O interfaces, and telecom power feeds requiring stable component supply and guaranteed surge immunity compliance.
Supply support for 5.0SMDJ33A 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power management, protection, and interface solutions.
The 5.0SMDJ33A belongs to TSC's high-power SMDJ series, engineered specifically for industrial-grade surge protection where 5000W pulse handling, tight VBR tolerance, and extended temperature operation are mandatory.
FAQ
What is the clamping voltage of the 5.0SMDJ33A under maximum surge conditions?
The 5.0SMDJ33A clamps to 53.3 V when subjected to its maximum rated peak pulse current of 93.9 A (10/1000 μs waveform). This value is measured and guaranteed per the datasheet, ensuring predictable overvoltage limiting for protected circuits. The clamping voltage remains stable across its full operating temperature range.
Is the 5.0SMDJ33A unidirectional or bidirectional?
5.0SMDJ33A is a unidirectional TVS diode, designed to protect against positive-going transients on DC lines referenced to ground. Its marking code "5PFM" and specification table confirm unidirectional configuration. It does not provide symmetrical clamping for AC or bipolar signals.
What is the maximum working standoff voltage for the 5.0SMDJ33A?
The maximum working standoff voltage (VWM) for the 5.0SMDJ33A is 33 V. This is the highest continuous reverse voltage the device can block without entering avalanche conduction. Operating above this voltage risks premature conduction and accelerated degradation.
Does the 5.0SMDJ33A require moisture baking before reflow soldering?
No, the 5.0SMDJ33A has a moisture sensitivity level (MSL) of 1 per J-STD-020, meaning it is exempt from floor life limitations and does not require pre-reflow baking. It can be mounted directly from dry pack into standard SMT reflow profiles without preconditioning.
What package type does the 5.0SMDJ33A use, and what are its key mechanical attributes?
The 5.0SMDJ33A uses the DO-214AB (SMC) package: a surface-mount plastic case with matte tin-plated leads, UL 94V-0 flammability rating, cathode band polarity indicator, and approximate weight of 0.300 g. Its thermal performance is characterized on a 16 mm × 16 mm copper pad.
5.0SMDJ33A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- 5.0SMDJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 93.9A
- Power - Peak Pulse:
- 5000W (5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
5.0SMDJ33A FAQ
1.How can I place an order for 5.0SMDJ33A through Aetrix?
Please submit a Request for Quotation (RFQ) for 5.0SMDJ33A 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 5.0SMDJ33A reliable?
The price and inventory of 5.0SMDJ33A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5.0SMDJ33A is usually 5 days.
3.What payment methods are accepted for 5.0SMDJ33A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5.0SMDJ33A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5.0SMDJ33A?
5.0SMDJ33A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5.0SMDJ33A 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 5.0SMDJ33A?
For technical support, including 5.0SMDJ33A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5.0SMDJ33A requirements.
6.How does Aetrix verify that 5.0SMDJ33A is sourced from the original manufacturer or authorized distributors?
All 5.0SMDJ33A 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 5.0SMDJ33A meets industry standards.
7.What is the process for return or replacement of 5.0SMDJ33A?
All 5.0SMDJ33A units undergo pre-shipment inspection (PSI). If there is an issue with 5.0SMDJ33A, 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 5.0SMDJ33A part is unused and in its original packaging.
Return procedure for 5.0SMDJ33A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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