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Taiwan Semiconductor Corporation 5.0SMDJ20AH
- Part No.:
- 5.0SMDJ20AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5.0SMDJ20AH.pdf
- Description:
- TVS DIODE 20VWM 32.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,692
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Product details
Overview
5.0SMDJ20AH 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 at 32.4V under 5A peak impulse current, and features a 22.2–24.5V breakdown voltage with <1.0ps response time - deployed in automotive body control modules and industrial PLC power inputs.
For engineers reviewing the 5.0SMDJ20AH datasheet, 5.0SMDJ20AH pinout, 5.0SMDJ20AH application, or 5.0SMDJ20AH equivalent, key selection criteria include its DO-214AB (SMC) package, 20V working standoff voltage, AEC-Q101 qualification, and verified clamping performance at 32.4V @ IPP = 5A - critical for robust 12V/24V system ESD and lightning surge immunity design.
Technical Context
This unidirectional TVS diode uses a stacked-die construction to achieve high peak pulse power handling while maintaining low clamping voltage. Its photo-glass passivated junction ensures stable VBR over temperature and long-term reliability under repetitive surge stress.
The device operates across –55°C to +175°C junction temperature range, with thermal resistance RθJL = 16°C/W and RθJA = 61°C/W on a 16mm × 16mm copper pad PCB - enabling effective heat dissipation in compact automotive and industrial layouts without heatsinks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - Maximum continuous reverse operating voltage before leakage exceeds 5 µA; defines safe DC bias margin for 12V/24V rail protection. |
| VBR @ IT = 1 mA | 22.2–24.5 V - Verified breakdown threshold ensuring reliable turn-on during transients above nominal system voltage. |
| VC @ IPP = 5 A | 32.4 V - Clamping voltage limiting downstream IC stress during 5A surge; enables compatibility with 33V-tolerant interface ICs. |
| PPPPM | 5000 W - Peak pulse power rating at 10/1000µs waveform; supports IEC 61000-4-5 Level 4 (4kV) surge compliance. |
| TJ max | +175 °C - Maximum junction temperature allowing operation in under-hood automotive environments without derating. |
| Response time | <1.0 ps - Sub-picosecond junction response ensures suppression before sensitive logic or analog circuitry is exposed to overvoltage. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode-indicated by band, matte tin-plated leads, moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes conduction path during reverse-biased surge event. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12V supply or CAN-H); polarity marking ensures correct orientation on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for front-end power protection in ADAS ECUs. |
| Photo-glass passivated junction | Eliminates surface leakage paths and improves long-term stability of VBR under humidity and bias stress. |
| Stacked-die configuration | Enables 5000W pulse power in DO-214AB footprint without compromising clamping voltage or thermal resistance. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS directives - required for export to EU, China, and automotive OEM supply chains. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Power Input |
|---|---|
Use Scenario: Protects 12V battery-supplied microcontroller power rails from load dump and alternator ripple surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between input fuse and DC-DC converter input. Use Value: Limits transient voltage to ≤32.4V, preventing damage to 36V-rated buck controllers and preserving system uptime. | Use Scenario: Shields 24V DC input stage of programmable logic controller against induced surges from relay coil switching. IC Role / Device Role / Timing Role: Primary surge suppression element upstream of input filter capacitor and crowbar circuit. Use Value: Absorbs 5000W pulses without degradation, maintaining >100,000 surge cycles per IEC 61000-4-5. |
| Telecom Remote I/O Interface | Medical Diagnostic Equipment Power Entry |
Use Scenario: Guards RS-485 transceiver power pins against ESD and cable discharge events in field-deployed sensors. IC Role / Device Role / Timing Role: Localized TVS on 5V/3.3V auxiliary supply lines feeding isolated communication ICs. Use Value: Sub-1ps response prevents latch-up in transceivers; 5µA leakage at 20V avoids signal integrity impact. | Use Scenario: Secures main AC/DC adapter output in portable ultrasound units exposed to hospital-grade EMI environments. IC Role / Device Role / Timing Role: Final-stage transient suppressor before medical-grade LDO regulators powering analog front-end ASICs. Use Value: 175°C max junction temperature supports sealed enclosure thermal profiles; halogen-free composition meets IEC 60601-1 material 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 |
|---|---|---|---|
| SMAJ20A | Lower peak power (400W), higher clamping voltage (34.0V @ 12.5A), SMA package (smaller thermal mass). | Not AEC-Q101 qualified; limited to commercial-grade consumer or test equipment. | Select only if surge energy is ≤400W and automotive qualification is not required. |
| SMCJ20A | Same DO-214AB package, 1500W peak power, clamping voltage 32.5V @ 46.5A - lower power density but broader current handling. | Lacks AEC-Q101 certification; used in industrial automation where extended surge duration matters more than peak amplitude. | Choose when cost sensitivity outweighs automotive compliance and 5000W single-event capability is unnecessary. |
Compared with SMAJ20A and SMCJ20A, the 5.0SMDJ20AH provides 3.3× higher peak power in identical footprint, AEC-Q101 validation for automotive use, and tighter VBR tolerance (±4.5%) - making it the only option for ISO 7637-2 Pulse 5a/b-compliant 12V systems requiring single-device 5kW surge absorption.
Availability
5.0SMDJ20AH is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and telecom remote I/O systems requiring stable component supply with full traceability and long-lifecycle support.
Supply support for 5.0SMDJ20AH 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive and industrial markets.
The 5.0SMDJxxAH series was developed to meet stringent AEC-Q101 requirements for high-power, surface-mount surge protection in next-generation vehicle ECUs and ruggedized industrial controls.
FAQ
What is the maximum clamping voltage of the 5.0SMDJ20AH under standard test conditions?
The 5.0SMDJ20AH has a maximum clamping voltage (VC) of 32.4 V when subjected to a 5 A peak impulse current (IPP) using the 10/1000 µs waveform. This value is measured at TA = 25°C and reflects the voltage seen by downstream circuitry during surge events - critical for ensuring compatibility with 33V-tolerant components in 12V/24V systems. The 5.0SMDJ20AH maintains this clamping performance across its full operating temperature range.
Is the 5.0SMDJ20AH suitable for automotive applications?
Yes, the 5.0SMDJ20AH is AEC-Q101 qualified and specifically designed for automotive use. It meets stress tests including high-temperature reverse bias, temperature cycling, and ESD per JESD22 standards. Its 175°C maximum junction temperature, DO-214AB mechanical robustness, and halogen-free construction align with Tier-1 supplier requirements for engine bay and body control module deployments. The 5.0SMDJ20AH is referenced in multiple TSC automotive application notes for load dump and ISO 7637-2 protection.
What is the working standoff voltage (VWM) of the 5.0SMDJ20AH, and how does it relate to system design?
The 5.0SMDJ20AH has a working standoff voltage (VWM) of 20 V - the maximum DC or continuous reverse voltage that can be applied without exceeding 5 µA leakage current. This allows safe integration into 12V nominal systems (with 13.5–14.4V charging peaks) and 24V systems (with up to 28V transients), providing margin before breakdown. Designers use VWM to ensure the 5.0SMDJ20AH remains non-conductive during normal operation while responding instantly to surges exceeding 22.2 V.
Does the 5.0SMDJ20AH have polarity markings, and how is it oriented on the PCB?
Yes, the 5.0SMDJ20AH uses a cathode band marking on the DO-214AB (SMC) package to indicate polarity. The banded end is the cathode and must be connected to the line being protected (e.g., 12V rail), while the anode connects to ground. This unidirectional configuration ensures low-leakage blocking in normal operation and fast avalanche conduction during positive transients on the protected line. Correct orientation is essential - reverse placement renders the 5.0SMDJ20AH ineffective.
What packaging and reel quantity is available for the 5.0SMDJ20AH?
The 5.0SMDJ20AH is supplied in DO-214AB (SMC) package format on tape-and-reel, with 3,000 units per reel. This packaging supports automated SMT placement and complies with J-STD-020 moisture sensitivity level 1 - meaning it can be stored indefinitely at ambient conditions without baking prior to reflow. The reel format includes full traceability data and conforms to EIA-481 standards for pick-and-place machine compatibility.
5.0SMDJ20AH 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):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 155A
- Power - Peak Pulse:
- 5000W (5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
5.0SMDJ20AH FAQ
1.How can I place an order for 5.0SMDJ20AH through Aetrix?
Please submit a Request for Quotation (RFQ) for 5.0SMDJ20AH 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 5.0SMDJ20AH reliable?
The price and inventory of 5.0SMDJ20AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5.0SMDJ20AH is usually 5 days.
3.What payment methods are accepted for 5.0SMDJ20AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5.0SMDJ20AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5.0SMDJ20AH?
5.0SMDJ20AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5.0SMDJ20AH 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 5.0SMDJ20AH?
For technical support, including 5.0SMDJ20AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5.0SMDJ20AH requirements.
6.How does Aetrix verify that 5.0SMDJ20AH is sourced from the original manufacturer or authorized distributors?
All 5.0SMDJ20AH 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 5.0SMDJ20AH meets industry standards.
7.What is the process for return or replacement of 5.0SMDJ20AH?
All 5.0SMDJ20AH units undergo pre-shipment inspection (PSI). If there is an issue with 5.0SMDJ20AH, 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 5.0SMDJ20AH part is unused and in its original packaging.
Return procedure for 5.0SMDJ20AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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