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Taiwan Semiconductor Corporation 5.0SMDJ45AH
- Part No.:
- 5.0SMDJ45AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5.0SMDJ45AH.pdf
- Description:
- 5000W, 52.7V, 5%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,049
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Product details
Overview
5.0SMDJ45AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 5000W peak pulse power at 10/1000μs, 45V working standoff voltage, and 72.7V maximum clamping voltage at 68.8A peak current. It serves as primary overvoltage protection on DC power rails and I/O lines in automotive and industrial power supplies.
For engineers reviewing the 5.0SMDJ45AH datasheet, 5.0SMDJ45AH pinout, 5.0SMDJ45AH application, or 5.0SMDJ45AH equivalent, key selection criteria include clamping voltage margin vs. protected IC VMAX, junction temperature derating above 25°C, unidirectional polarity marking, and compatibility with automated SMT placement on 16mm × 16mm copper pads.
Technical Context
This TVS diode uses a stacked-die construction to achieve high surge capability in a compact SMC outline. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<2µA at 45V), while the AEC-Q101 qualification confirms suitability for automotive under-hood environments.
The device operates within –55°C to +175°C junction range, with thermal resistance of 16°C/W (junction-to-lead) and 61°C/W (junction-to-ambient) when mounted per JEDEC standard test board. Clamping response is sub-1.0ps, enabling protection against fast ESD and lightning-induced transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 45 V - Maximum continuous reverse operating voltage before conduction begins; defines upper limit of normal circuit operation. |
| VBR @ IT=1mA | 50.0–55.3 V - Breakdown voltage range at 1mA test current; ensures reliable turn-on during overvoltage events. |
| VC @ IPP=68.8A | 72.7 V - Clamped voltage during 10/1000μs surge; must remain below protected device's absolute maximum rating. |
| PPPPM | 5000 W - Peak pulse power handling capacity; determines survivability against IEC 61000-4-5 Level 4 surges. |
| RθJA | 61 °C/W - Junction-to-ambient thermal resistance on standard PCB; used to calculate max ambient temperature for 175°C TJ limit. |
| αVBR | 0.106 mV/°C - Temperature coefficient of breakdown voltage; enables accurate VBR adjustment across operating temperature range. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional configuration with cathode band marking. Weight: 0.300 g. Molding compound meets UL 94V-0; matte tin-plated leads comply with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during forward conduction | Connected to lower-potential side (e.g., GND or return path) in unidirectional TVS configuration. |
| Cathode | Current exit during reverse-biased clamping | Connected to protected line (e.g., 45V rail); polarity band identifies this terminal on package body. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring reliability under thermal cycling and vibration. |
| 5000W peak pulse power | Supports IEC 61000-4-5 4kV surge immunity without degradation when properly heatsinked on PCB copper area. |
| Sub-1.0ps response time | Clamps transients faster than most microcontroller I/O pin ESD structures, preventing latch-up or gate oxide damage. |
| Stacked-die architecture | Enables higher energy absorption in DO-214AB footprint versus single-die alternatives, reducing board space vs. parallel TVS solutions. |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input |
|---|---|
Use Scenario: Protecting 48V battery-fed ECUs against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive-going surges. Use Value: 72.7V clamping voltage ensures safe margin below typical 80V-rated power management ICs, while 5000W rating handles 12V/48V system-level surges. | Use Scenario: Safeguarding programmable logic controller (PLC) 24V DC input terminals from field-wiring induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DIN-rail power supply output, upstream of filtering and regulation stages. Use Value: Low 2µA leakage at 45V minimizes standby power loss; DO-214AB package supports high-current PCB trace routing without thermal bottlenecks. |
| Telecom Interface Protection | Motor Drive Control Signal Line |
Use Scenario: Shielding RS-485 transceiver VCC pins from induced surges on long cable runs. IC Role / Device Role / Timing Role: Local rail clamp adjacent to transceiver IC, referenced to local ground plane. Use Value: Sub-1.0ps response prevents data corruption during fast transients; AEC-Q101 qualification adds robustness for outdoor telecom cabinets. | Use Scenario: Guarding isolated gate driver supply rails in BLDC motor inverters against switching noise coupling. IC Role / Device Role / Timing Role: Secondary protection on auxiliary 15–24V bias rails feeding high-side gate drivers. Use Value: 45V VWM matches common isolated DC-DC output ratings; 175°C TJMAX sustains operation near heat-generating IGBT modules. |
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 600W peak power rating; same DO-214AA (SMB) package; 73.0V clamping at 43.3A. | Not suitable for IEC 61000-4-5 Level 4; limited to lower-energy surges in consumer-grade equipment. | Select SMBJ45A only if system-level surge testing is ≤1kV and board space constraints prohibit DO-214AB footprint. |
| SMCJ45A | Same 5000W rating and DO-214AB package; 73.0V clamping at 68.7A; identical thermal specs but non-AEC-Q101 qualified. | Lacks automotive qualification; acceptable for industrial controls where AEC compliance is not mandated. | Choose SMCJ45A for cost-sensitive industrial designs where AEC-Q101 is unnecessary and full 5000W capability is required. |
Compared with SMBJ45A and SMCJ45A, the 5.0SMDJ45AH delivers identical surge robustness to SMCJ45A while adding AEC-Q101 validation-making it the sole choice for automotive power domains where qualification evidence is contractually required.
Availability
5.0SMDJ45AH is available at Aetrix Electronics and suitable for automotive electronic control units, industrial PLC power inputs, and telecom interface protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for 5.0SMDJ45AH 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, serving global automotive, industrial, and computing markets since 1979.
The 5.0SMDJxxAH series was developed specifically for high-reliability DC power rail protection in harsh environments, emphasizing AEC-Q101 compliance, tight parametric tolerances, and robust thermal performance in surface-mount packages.
FAQ
What is the maximum clamping voltage of the 5.0SMDJ45AH under a 10/1000μs surge?
The 5.0SMDJ45AH has a maximum clamping voltage (VC) of 72.7 V when subjected to its rated peak pulse current of 68.8 A under the 10/1000μs waveform. This value is measured per JEDEC standards and guarantees that protected downstream components experience no more than 72.7 V during worst-case surge events, provided layout and grounding follow best practices for TVS implementation.
Is the 5.0SMDJ45AH suitable for automotive applications?
Yes, the 5.0SMDJ45AH is AEC-Q101 qualified, making it suitable for automotive applications including engine control modules, body control units, and ADAS power supplies. Its –55°C to +175°C operating junction temperature range, glass-passivated junction, and moisture sensitivity level 1 rating align with automotive manufacturing and under-hood environmental requirements.
What does the marking code '5PFV' indicate on the 5.0SMDJ45AH package?
The marking code '5PFV' on the 5.0SMDJ45AH identifies it as the 45 V variant within the 5.0SMDJxxAH family. Per Taiwan Semiconductor documentation, '5PFV' corresponds exclusively to the 5.0SMDJ45AH part number and confirms its unidirectional configuration, 45 V working standoff voltage, and compliance with all electrical and mechanical specifications published for that specific device.
How does the thermal performance of the 5.0SMDJ45AH compare to smaller-package TVS diodes?
The 5.0SMDJ45AH achieves RθJA = 61°C/W and RθJL = 16°C/W when mounted on a 16 mm × 16 mm copper pad, significantly outperforming SMB- or SOD-123-packaged TVS devices. This enables sustained operation at higher ambient temperatures and supports repeated surge events without thermal runaway-critical for systems lacking active cooling.
Can the 5.0SMDJ45AH be used in bidirectional configurations?
No, the 5.0SMDJ45AH is a unidirectional TVS diode, designed only for clamping positive-going transients on DC rails referenced to ground. For bidirectional protection (e.g., AC lines or differential buses), a dedicated bidirectional device such as the 5.0SMDJ45CA must be selected; using two 5.0SMDJ45AH devices in series opposition is not recommended due to mismatched VBR tolerances and undefined reverse conduction behavior.
5.0SMDJ45AH 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
5.0SMDJ45AH FAQ
1.How can I place an order for 5.0SMDJ45AH through Aetrix?
Please submit a Request for Quotation (RFQ) for 5.0SMDJ45AH 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 5.0SMDJ45AH reliable?
The price and inventory of 5.0SMDJ45AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5.0SMDJ45AH is usually 5 days.
3.What payment methods are accepted for 5.0SMDJ45AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5.0SMDJ45AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5.0SMDJ45AH?
5.0SMDJ45AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5.0SMDJ45AH 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 5.0SMDJ45AH?
For technical support, including 5.0SMDJ45AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5.0SMDJ45AH requirements.
6.How does Aetrix verify that 5.0SMDJ45AH is sourced from the original manufacturer or authorized distributors?
All 5.0SMDJ45AH 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 5.0SMDJ45AH meets industry standards.
7.What is the process for return or replacement of 5.0SMDJ45AH?
All 5.0SMDJ45AH units undergo pre-shipment inspection (PSI). If there is an issue with 5.0SMDJ45AH, 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 5.0SMDJ45AH part is unused and in its original packaging.
Return procedure for 5.0SMDJ45AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5.0SMDJ45AH Tags
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