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Taiwan Semiconductor Corporation 5.0SMDJ40AH
- Part No.:
- 5.0SMDJ40AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5.0SMDJ40AH.pdf
- Description:
- 5000W, 46.8V, 5%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:4,503
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Product details
Overview
5.0SMDJ40AH 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 64.5V at 77.6A, and features a 40V working standoff voltage with <2µA leakage. It is AEC-Q101 qualified and used in automotive power supply inputs.
For engineers reviewing the 5.0SMDJ40AH datasheet, 5.0SMDJ40AH pinout, 5.0SMDJ40AH application, or 5.0SMDJ40AH equivalent, key selection criteria include its DO-214AB (SMC) package, 44.4–49.1V breakdown range, fast sub-1ps response, 175°C max junction temperature, and RoHS/halogen-free compliance for automotive-grade reliability.
Technical Context
This unidirectional TVS diode uses a stacked-die construction in a DO-214AB (SMC) package to achieve high surge robustness without sacrificing thermal performance. Its 16°C/W junction-to-lead thermal resistance enables effective heat transfer to PCB copper pads under repetitive surge conditions.
The device operates across –55°C to +175°C, with a temperature coefficient of VBR at 0.105 mV/°C and forward voltage of 5V at 100A. Clamping occurs at 64.5V under 77.6A peak impulse current, supporting IEC 61000-4-5 Level 4 surge immunity when properly laid out.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR @ IT=1mA | 44.4–49.1 V - Breakdown voltage range ensuring reliable turn-on during overvoltage events |
| VC @ IPP=77.6A | 64.5 V - Clamping voltage limiting downstream circuit stress during 5000W surges |
| PPPSM | 5000 W - Peak pulse power handling capability per 10/1000μs waveform |
| IIB @ VWM | <2 µA - Low leakage preserves efficiency in standby and low-power systems |
| RθJL | 16 °C/W - Enables thermal management on standard 16mm×16mm Cu pad PCBs |
| TJ max | +175 °C - Supports operation in under-hood automotive environments |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode indicated by band. Matte tin-plated leads, moisture sensitivity level 1 (J-STD-020), UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path / Surge return path | Connected to system ground or low-side reference; completes clamping loop during transient |
| Cathode | Protected line connection / Surge injection point | Connected to line being protected (e.g., 40V rail); conducts avalanche current to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics |
| Photo glass passivated junction | Enhances long-term reliability and stability of breakdown voltage under humidity and thermal cycling |
| Sub-1ps response time | Ensures clamping activation before sensitive downstream ICs experience damaging voltage overshoot |
| Stacked die configuration | Enables 5000W surge rating in compact DO-214AB footprint without derating penalties |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and global environmental compliance requirements for automotive production |
Applications
| Automotive Power Input Protection | Industrial DC Power Rail Clamp |
|---|---|
Use Scenario: Protecting 42V battery-fed ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery rail and DC-DC input. Use Value: Limits transient voltage to ≤64.5V during 5000W surges, preserving upstream regulator integrity. | Use Scenario: Safeguarding programmable logic controller (PLC) 24V DC power inputs from field-induced surges. IC Role / Device Role / Timing Role: Primary surge suppression device on main power entry point. Use Value: Withstands repeated 10/1000μs transients up to 77.6A while maintaining <2µA leakage at 40V. |
| Automotive Sensor Interface Protection | Telecom DC Feeder Line Clamp |
Use Scenario: Shielding LIN bus or analog sensor inputs connected to 12V/40V domains from ESD and coupled noise. IC Role / Device Role / Timing Role: Secondary-level TVS on signal line power rails near connector entry. Use Value: Fast sub-1ps response prevents latch-up in precision ADC front-ends during fast-rising transients. | Use Scenario: Protecting remote radio unit (RRU) DC feeder lines from lightning-induced surges in outdoor base stations. IC Role / Device Role / Timing Role: High-power clamping device on -48V telecom supply input. Use Value: 5000W rating and 175°C junction rating support operation in uncooled outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ40A | Lower 400W peak power rating; same DO-214AA package but smaller thermal mass | Not AEC-Q101 qualified; suitable for industrial but not automotive grade | Select SMBJ40A only for cost-sensitive non-automotive designs where 5000W surge immunity is not required |
| SMCJ40A | Same DO-214AB (SMC) package and 5000W rating, but VBR min = 44.4V (identical), VC = 64.5V (identical) | Also AEC-Q101 qualified; differs only in manufacturer and minor process variations | SMCJ40A is a direct functional alternative with identical electrical specs and qualification status |
Compared with SMBJ40A and SMCJ40A, the 5.0SMDJ40AH provides identical clamping performance and automotive qualification as SMCJ40A but offers superior thermal resistance (16°C/W vs. typical 20°C/W) and tighter VBR tolerance control per datasheet binning.
Availability
5.0SMDJ40AH is available at Aetrix Electronics and suitable for automotive power input protection, industrial DC power rail clamp, and telecom DC feeder line clamp requiring stable component supply and full AEC-Q101 traceability.
Supply support for 5.0SMDJ40AH 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, and rectifiers with global automotive and industrial certifications.
The 5.0SMDJ series is part of TSC's AEC-Q101-qualified TVS portfolio, engineered specifically for high-reliability surge suppression in automotive power distribution and industrial control systems.
FAQ
What is the maximum clamping voltage of the 5.0SMDJ40AH under rated surge current?
The 5.0SMDJ40AH clamps to a maximum of 64.5 V when subjected to its rated peak pulse current of 77.6 A (10/1000 μs waveform). This value is guaranteed across temperature and lifetime per the datasheet's electrical specifications table and is critical for ensuring downstream components remain within safe operating voltage limits during surge events. The 5.0SMDJ40AH achieves this clamping performance while maintaining low leakage and high thermal robustness.
Is the 5.0SMDJ40AH suitable for automotive applications?
Yes, the 5.0SMDJ40AH is AEC-Q101 qualified and explicitly designed for automotive use, including engine control units, body electronics, and ADAS power supplies. Its –55°C to +175°C operating range, stacked-die construction, and photo glass passivation ensure reliability under thermal cycling, humidity, and mechanical vibration. The 5.0SMDJ40AH meets stringent automotive surge immunity requirements such as ISO 7637-2 and IEC 61000-4-5.
What does the marking code '5PFR' indicate on the 5.0SMDJ40AH device?
The marking code '5PFR' on the 5.0SMDJ40AH identifies it as the 40 V variant in Taiwan Semiconductor's 5.0SMDJ family. Per the ordering information table, '5PFR' corresponds uniquely to 5.0SMDJ40AH and confirms its VWM = 40 V, VBR range = 44.4–49.1 V, and unidirectional configuration. This marking is laser-etched on the DO-214AB (SMC) package body and is used for traceability and binning verification. The 5.0SMDJ40AH marking is standardized across production lots.
How does the thermal performance of the 5.0SMDJ40AH compare to similar TVS diodes in DO-214AB packages?
The 5.0SMDJ40AH has a junction-to-lead thermal resistance (RθJL) of 16°C/W, measured on a 16 mm × 16 mm copper pad PCB - lower than typical DO-214AB TVS diodes (often 18–22°C/W). This improves power derating and enables sustained operation at higher ambient temperatures. The 5.0SMDJ40AH also features a 17°C/W junction-to-case resistance, supporting efficient heat transfer in constrained layouts. These values are confirmed in the Thermal Performance section of the official datasheet.
Can the 5.0SMDJ40AH be used in bidirectional configurations?
No, the 5.0SMDJ40AH is a unidirectional TVS diode and must be used with correct polarity - cathode toward the protected line, anode to ground. It is not rated for reverse standoff or symmetrical clamping. For bidirectional protection, two 5.0SMDJ40AH devices may be connected in series opposing configuration, but that is not recommended due to mismatched VBR tolerances and reduced reliability. Use a dedicated bidirectional part like 5.0SMDJ40CA if AC or dual-polarity protection is required.
5.0SMDJ40AH 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):
- 40V
- Voltage - Breakdown (Min):
- 44.4V
- Voltage - Clamping (Max) @ Ipp:
- 64.5V
- Current - Peak Pulse (10/1000µs):
- 77.6A
- Power - Peak Pulse:
- 5000W (5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
5.0SMDJ40AH FAQ
1.How can I place an order for 5.0SMDJ40AH through Aetrix?
Please submit a Request for Quotation (RFQ) for 5.0SMDJ40AH 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 5.0SMDJ40AH reliable?
The price and inventory of 5.0SMDJ40AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5.0SMDJ40AH is usually 5 days.
3.What payment methods are accepted for 5.0SMDJ40AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5.0SMDJ40AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5.0SMDJ40AH?
5.0SMDJ40AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5.0SMDJ40AH 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 5.0SMDJ40AH?
For technical support, including 5.0SMDJ40AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5.0SMDJ40AH requirements.
6.How does Aetrix verify that 5.0SMDJ40AH is sourced from the original manufacturer or authorized distributors?
All 5.0SMDJ40AH 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 5.0SMDJ40AH meets industry standards.
7.What is the process for return or replacement of 5.0SMDJ40AH?
All 5.0SMDJ40AH units undergo pre-shipment inspection (PSI). If there is an issue with 5.0SMDJ40AH, 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 5.0SMDJ40AH part is unused and in its original packaging.
Return procedure for 5.0SMDJ40AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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