My Inquiry
My Account
Taiwan Semiconductor Corporation 5.0SMDJ45A
- Part No.:
- 5.0SMDJ45A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5.0SMDJ45A.pdf
- Description:
- 5000W, 52.7V, 5%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,340
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
5.0SMDJ45A 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 72.7V at 68.8A, and features a 45V working standoff voltage with <2μA leakage at rated VWM.
For engineers reviewing the 5.0SMDJ45A datasheet, 5.0SMDJ45A pinout, 5.0SMDJ45A application, or 5.0SMDJ45A equivalent, key selection criteria include clamping voltage (72.7V), peak pulse current (68.8A), unidirectional polarity, DO-214AB package thermal performance (RθJA = 61°C/W), and JESD201 Class 2 whisker resistance.
Technical Context
The 5.0SMDJ45A employs a stacked-die construction in a DO-214AB (SMC) package to achieve high surge robustness while maintaining fast response (<1.0ps). Its unidirectional configuration provides low forward voltage (5V @ 100A) and precise breakdown control via photo-glass passivated junction technology.
Thermal design is supported by verified RθJL = 16°C/W and RθJC = 17°C/W values under standardized 16mm × 16mm copper pad mounting. The device operates across –55°C to +175°C junction temperature range and meets J-STD-020 moisture sensitivity level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 45 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR @ IT=1mA | 50.0–55.3 V - Verified breakdown threshold ensuring reliable turn-on during overvoltage events |
| VC @ IPP=68.8A | 72.7 V - Clamped voltage limiting downstream circuit stress during 10/1000μs surges |
| PPPPM | 5000 W - Peak pulse power handling capability per standard 10/1000μs waveform |
| IPP | 68.8 A - Maximum non-repetitive surge current the device safely diverts |
| RθJA | 61 °C/W - Junction-to-ambient thermal resistance on 16mm × 16mm Cu PCB pad, critical for thermal derating |
| αVBR | 0.106 mV/°C - Temperature coefficient of breakdown voltage, enabling stable operation over wide temperature range |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional configuration with cathode band marking. Matte tin-plated leads, UL 94V-0 molding compound, 0.300g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to protected line ground or return path; enables low-VF (5V @ 100A) conduction during fault |
| Cathode | Current exit point in forward bias; marked by band | Connected to protected line input; defines polarity-sensitive clamping direction for DC systems |
Key Features
| Feature | Design Value |
|---|---|
| Peak pulse power rating | 5000 W at 10/1000μs - Enables protection against IEC 61000-4-5 Level 4 surges without cascaded stages |
| Clamping ratio (VC/VBR) | ~1.31 - Tight voltage margin between breakdown and clamping ensures minimal overvoltage exposure |
| Response time | <1.0 ps - Sub-picosecond switching prevents transient energy coupling into sensitive ICs |
| Moisture sensitivity | Level 1 per J-STD-020 - Eliminates bake requirements prior to reflow, supporting standard SMT assembly |
| Whisker resistance | JESD 201 Class 2 - Ensures long-term reliability in high-vibration or extended-life industrial deployments |
Applications
| Industrial AC/DC Power Supply Input Stage | Automotive Body Control Module (BCM) I/O Protection |
|---|---|
Use Scenario: Protecting rectified DC bus inputs against lightning-induced surges and load dump transients. IC Role / Device Role / Timing Role: Primary shunt TVS element placed directly across input terminals upstream of bulk capacitors and regulators. Use Value: Clamps 5000W surges to ≤72.7V, preventing damage to bridge rectifiers, PFC controllers, and primary-side MOSFETs. | Use Scenario: Safeguarding LIN/CAN transceiver I/O pins and microcontroller GPIOs from ESD and battery dump events. IC Role / Device Role / Timing Role: Unidirectional TVS connected between signal line and chassis ground, leveraging fast <1.0ps response. Use Value: Limits transient voltage to 72.7V at 68.8A, preserving signal integrity and avoiding latch-up in 5V-tolerant MCU peripherals. |
| Telecom Remote Radio Unit (RRU) Power Interface | Renewable Energy Inverter DC Link Monitoring Circuit |
Use Scenario: Securing 48V DC power feeds in outdoor base station equipment exposed to induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 45V) placed at power entry with minimal parasitic capacitance. Use Value: Maintains <2μA leakage at 45V, minimizing standby power loss while delivering full 5000W surge immunity. | Use Scenario: Protecting isolated voltage sense inputs monitoring high-voltage DC link (e.g., 400–800V) in solar inverters. IC Role / Device Role / Timing Role: Secondary-stage TVS used after resistive divider to clamp divided transients before ADC input. Use Value: Provides precise 72.7V clamping on scaled-down signals, enabling accurate overvoltage detection without sensor saturation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45A | Lower peak power (600W vs. 5000W); same DO-214AA package footprint but smaller thermal mass | Not suitable for IEC 61000-4-5 Level 4; limited to lower-energy ESD and EFT events | Select only when surge energy is ≤600W and board space restricts DO-214AB use |
| SMCJ45A | Same 5000W rating and DO-214AB package; identical VWM, VBR, and VC specs per ON Semiconductor datasheet | Drop-in functional replacement with validated automotive qualification (AEC-Q101) | Preferred for automotive designs requiring AEC-Q101 compliance; otherwise electrically interchangeable with 5.0SMDJ45A |
Compared with SMBJ45A and SMCJ45A, the 5.0SMDJ45A offers identical surge capability to SMCJ45A but lacks AEC-Q101 certification, while outperforming SMBJ45A by >8× peak power-making it optimal for industrial power supply front-end protection where automotive qualification is not required.
Availability
5.0SMDJ45A is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, telecom remote radio units, and renewable energy inverter monitoring circuits requiring stable component supply and high-reliability surge immunity.
Supply support for 5.0SMDJ45A 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 5.0SMDJxxA series was developed specifically for high-power, surface-mount surge protection in industrial and telecom infrastructure, emphasizing rugged thermal performance, automated assembly compatibility, and precise clamping control.
FAQ
What is the maximum clamping voltage of the 5.0SMDJ45A under a 10/1000μs surge?
The 5.0SMDJ45A has a maximum clamping voltage (VC) of 72.7 V when subjected to its rated peak pulse current of 68.8 A under the standard 10/1000μs waveform. This value is measured per JEDEC test conditions and guarantees predictable overvoltage limiting for downstream components in the protected circuit.
Is the 5.0SMDJ45A unidirectional or bidirectional, and how is polarity identified?
5.0SMDJ45A is a unidirectional TVS diode. Polarity is indicated by a cathode band on the DO-214AB (SMC) package body. The banded end corresponds to the cathode terminal, which must be connected toward the higher-potential side of the protected line to ensure proper clamping action during positive transients.
What is the junction-to-ambient thermal resistance (RθJA) for the 5.0SMDJ45A, and under what conditions is it specified?
The junction-to-ambient thermal resistance (RθJA) of the 5.0SMDJ45A is 61°C/W. This value is measured with the device mounted on a standardized 16mm × 16mm copper pad test board per JEDEC standards, and is essential for calculating safe power derating above 25°C ambient temperature.
Does the 5.0SMDJ45A meet RoHS and halogen-free requirements?
Yes, the 5.0SMDJ45A is RoHS compliant and halogen-free per IEC 61249-2-21. These compliance statements are confirmed in the official Taiwan Semiconductor datasheet revision D2102 and apply to all units shipped under standard ordering codes.
What is the working standoff voltage (VWM) and maximum leakage current of the 5.0SMDJ45A at that voltage?
The 5.0SMDJ45A has a working standoff voltage (VWM) of 45 V, with a maximum blocking leakage current (IIB) of 2 μA at this voltage and 25°C. This low leakage ensures minimal power loss in always-on DC power rail protection applications.
5.0SMDJ45A 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):
- 45V
- Voltage - Breakdown (Min):
- 50V
- Voltage - Clamping (Max) @ Ipp:
- 72.7V
- Current - Peak Pulse (10/1000µs):
- 68.8A
- 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)
5.0SMDJ45A FAQ
1.How can I place an order for 5.0SMDJ45A through Aetrix?
Please submit a Request for Quotation (RFQ) for 5.0SMDJ45A 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 5.0SMDJ45A reliable?
The price and inventory of 5.0SMDJ45A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5.0SMDJ45A is usually 5 days.
3.What payment methods are accepted for 5.0SMDJ45A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5.0SMDJ45A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5.0SMDJ45A?
5.0SMDJ45A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5.0SMDJ45A 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 5.0SMDJ45A?
For technical support, including 5.0SMDJ45A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5.0SMDJ45A requirements.
6.How does Aetrix verify that 5.0SMDJ45A is sourced from the original manufacturer or authorized distributors?
All 5.0SMDJ45A 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 5.0SMDJ45A meets industry standards.
7.What is the process for return or replacement of 5.0SMDJ45A?
All 5.0SMDJ45A units undergo pre-shipment inspection (PSI). If there is an issue with 5.0SMDJ45A, 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 5.0SMDJ45A part is unused and in its original packaging.
Return procedure for 5.0SMDJ45A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5.0SMDJ45A Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
