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Taiwan Semiconductor Corporation 5.0SMDJ22A
- Part No.:
- 5.0SMDJ22A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5.0SMDJ22A.pdf
- Description:
- 5000W, 25.7V, 5%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:2,195
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Product details
Overview
5.0SMDJ22A 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 transients to ≤35.5V at 141A, and features a 22V working standoff voltage with <5µA leakage at VWM. It is used in AC/DC power supply input stages to protect downstream converters and controllers.
For engineers reviewing the 5.0SMDJ22A datasheet, 5.0SMDJ22A pinout, 5.0SMDJ22A application, or 5.0SMDJ22A equivalent, key selection criteria include clamping voltage (VC = 35.5V), breakdown voltage range (24.4–26.9V), thermal resistance (RθJA = 61°C/W), unidirectional polarity, and DO-214AB (SMC) package compatibility with automated SMT assembly.
Technical Context
The 5.0SMDJ22A operates as a unidirectional avalanche diode, leveraging stacked-die construction to achieve high peak pulse power handling without derating at elevated ambient temperatures. Its fast response time (<1.0ps) ensures suppression before sensitive circuitry sustains damage, and its glass-passivated junction enhances reliability under repeated surge stress.
Designed for PCB-level protection, it requires no external biasing and relies on intrinsic avalanche behavior triggered when reverse voltage exceeds VBR. The device's low clamping ratio (VC/VBR ≈ 1.37) and tight VBR tolerance (±5.2%) support predictable overvoltage limiting in industrial power rails and communication interface ports.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before leakage exceeds 5 µA |
| VBR @ IT=1mA | 24.4–26.9 V - Breakdown voltage range defining reliable avalanche initiation threshold |
| VC @ IPP=141A | 35.5 V - Clamped voltage during 10/1000µs surge, limiting stress on protected ICs |
| PPPPM | 5000 W - Peak pulse power capability enabling robust protection against IEC 61000-4-5 Level 4 surges |
| RθJA | 61 °C/W - Junction-to-ambient thermal resistance on 16mm × 16mm Cu pad, guiding heatsinking requirements |
| TJ max | 175 °C - Maximum junction temperature supporting operation in high-temperature industrial environments |
| Package | DO-214AB (SMC) - Standardized surface-mount outline with cathode band polarity marking |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band; weight ≈0.300g; meets UL 94V-0 and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line (e.g., GND or return path) |
| Cathode | Avalanche conduction terminal | Connected to higher-potential side (e.g., VIN or signal line); marked by band |
Key Features
| Feature | Design Value |
|---|---|
| Peak pulse power | 5000 W at 10/1000µs - Enables single-device protection against severe lightning-induced surges |
| Clamping performance | VC/VBR ≈ 1.37 - Minimizes overvoltage overshoot during transient events |
| Response time | <1.0 ps - Activates faster than most semiconductor switching transients propagate |
| Moisture sensitivity | Level 1 per J-STD-020 - Eliminates bake requirements prior to reflow soldering |
| Environmental compliance | RoHS-compliant and halogen-free per IEC 61249-2-21 - Supports green manufacturing and end-of-life recycling |
Applications
| AC/DC Power Input Protection | I/O Interface Protection |
|---|---|
Use Scenario: Protecting primary-side rectifier outputs and secondary-side DC bus inputs in industrial switch-mode power supplies. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across input rails to clamp surge energy before it reaches PWM controllers or MOSFET drivers. Use Value: Limits transient voltage to ≤35.5V during 141A surges, preventing gate oxide rupture in downstream FETs and latch-up in control ICs. | Use Scenario: Safeguarding RS-485 transceivers, CAN nodes, and isolated digital I/O ports against ESD and cable discharge events. IC Role / Device Role / Timing Role: Standoff diode connected between signal line and ground, conducting only during overvoltage conditions. Use Value: Sub-1ps response ensures clamping occurs before transceiver ESD structures are stressed, preserving signal integrity and longevity. |
| Motor Drive DC Bus Protection | Telecom Line Card Surge Suppression |
Use Scenario: Shielding H-bridge gate drivers and current-sense amplifiers from inductive kickback and load dump transients in BLDC motor drives. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS placed across DC link capacitors to absorb regenerative energy spikes. Use Value: 5000W rating handles repetitive 10/1000µs pulses common in motor commutation, extending system MTBF. | Use Scenario: Front-end protection for DSL, POTS, and xDSL line interface units exposed to lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Primary surge limiter mounted at connector entry point, shunting energy to chassis ground. Use Value: 22V VWM allows normal 24V nominal line operation while clamping to 35.5V-well below typical LRU IC absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | Lower peak power (600W vs. 5000W); same DO-214AA package; VC = 35.5V at 17.1A | Suitable for lower-energy ESD and contact discharge; insufficient for IEC 61000-4-5 line surges | Select 5.0SMDJ22A where full 5kW surge immunity is required; SMBJ22A fits space-constrained layouts needing only 600W rating. |
| SMCJ22A | Same DO-214AB package and 5000W rating; VBR min/max tighter (24.5–26.5V); VC = 35.0V at 143A | Nearly identical performance; minor VBR and VC variation within design margin | SMCJ22A is a direct functional alternative with comparable thermal and electrical specs; verify marking and reel packaging compatibility for production use. |
Compared with SMBJ22A and SMCJ22A, the 5.0SMDJ22A offers identical package and clamping performance to SMCJ22A but differs from SMBJ22A in surge capacity-making it suitable for high-energy industrial mains protection where 600W devices would fail catastrophically.
Availability
5.0SMDJ22A is available at Aetrix Electronics and suitable for AC/DC power supplies, industrial motor drives, and telecom line cards requiring stable component supply and long-term lifecycle assurance.
Supply support for 5.0SMDJ22A 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 signal conditioning devices.
The 5.0SMDJ22A belongs to TSC's high-power SMD TVS diode family, engineered specifically for robust front-end surge suppression in industrial-grade power conversion and communications infrastructure equipment.
FAQ
What is the maximum clamping voltage of the 5.0SMDJ22A under rated surge conditions?
The 5.0SMDJ22A exhibits a maximum clamping voltage (VC) of 35.5 V when subjected to a 10/1000 µs waveform with a peak pulse current (IPP) of 141 A. This value is measured per standard test conditions (TA = 25°C) and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. Designers use this parameter to verify that downstream components remain within their absolute maximum voltage ratings.
Is the 5.0SMDJ22A unidirectional or bidirectional, and how is polarity identified?
The 5.0SMDJ22A is a unidirectional TVS diode, intended for DC line protection where reverse voltage is not expected. Polarity is marked by a cathode band on the DO-214AB (SMC) package body; the banded end connects to the higher-potential side (e.g., VIN), while the anode connects to ground or return. Its electrical characteristics-including VWM, VBR, and VC-are specified only for reverse-biased operation.
What is the thermal resistance of the 5.0SMDJ22A, and how does it affect PCB layout?
The 5.0SMDJ22A has a junction-to-ambient thermal resistance (RθJA) of 61 °C/W when mounted on a 16 mm × 16 mm copper pad per JEDEC standards. This value assumes no additional heatsinking; designers must allocate sufficient copper area and consider thermal vias if operating near maximum power dissipation. Exceeding TJ = 175°C risks parametric shift or failure, so layout must support heat spreading under repetitive surge duty cycles.
Does the 5.0SMDJ22A meet RoHS and halogen-free requirements?
Yes, the 5.0SMDJ22A is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound contains no brominated flame retardants or chlorine-based additives, and lead content is below 1000 ppm. These attributes support compliance with EU directives and environmental policies for industrial and telecom equipment, and are verified in TSC's material declarations and certificate of conformity.
Can the 5.0SMDJ22A be used in place of the 5.0SMDJ22CA?
No-the 5.0SMDJ22A is unidirectional, whereas the 5.0SMDJ22CA is bidirectional and designed for AC or dual-polarity signal lines. Substituting the 5.0SMDJ22A in a bidirectional application will result in forward conduction during negative half-cycles, causing excessive leakage, overheating, or failure. Always match device polarity to circuit topology: use 5.0SMDJ22A for DC rails and 5.0SMDJ22CA for AC-coupled interfaces like Ethernet or audio lines.
5.0SMDJ22A 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):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 141A
- 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)
5.0SMDJ22A FAQ
1.How can I place an order for 5.0SMDJ22A through Aetrix?
Please submit a Request for Quotation (RFQ) for 5.0SMDJ22A 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 5.0SMDJ22A reliable?
The price and inventory of 5.0SMDJ22A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5.0SMDJ22A is usually 5 days.
3.What payment methods are accepted for 5.0SMDJ22A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5.0SMDJ22A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5.0SMDJ22A?
5.0SMDJ22A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5.0SMDJ22A 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 5.0SMDJ22A?
For technical support, including 5.0SMDJ22A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5.0SMDJ22A requirements.
6.How does Aetrix verify that 5.0SMDJ22A is sourced from the original manufacturer or authorized distributors?
All 5.0SMDJ22A 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 5.0SMDJ22A meets industry standards.
7.What is the process for return or replacement of 5.0SMDJ22A?
All 5.0SMDJ22A units undergo pre-shipment inspection (PSI). If there is an issue with 5.0SMDJ22A, 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 5.0SMDJ22A part is unused and in its original packaging.
Return procedure for 5.0SMDJ22A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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