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Diodes Incorporated 3.0SMCJ43A-13
- Part No.:
- 3.0SMCJ43A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ43A-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,318
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Product details
Overview
3.0SMCJ43A-13 from Diodes Incorporated is a unidirectional 43V standoff transient voltage suppressor (TVS) diode in SMC package, rated for 3000W peak pulse power, 69.4V clamping voltage at 43.2A peak pulse current, and 5µA max reverse leakage at VRWM - deployed for primary-level overvoltage protection on DC power rails and I/O lines in industrial motor drives and telecom power supplies.
For engineers reviewing the 3.0SMCJ43A-13 datasheet, 3.0SMCJ43A-13 pinout, 3.0SMCJ43A-13 application, or 3.0SMCJ43A-13 equivalent, key selection criteria include clamping voltage margin vs. protected IC VMAX, standoff voltage alignment with nominal rail voltage (e.g., 36–48V systems), IEC-61000-4-2 ESD robustness (30kV air/30kV contact), and thermal derating above +25°C ambient per Fig. 1.
Technical Context
This TVS operates as a silicon avalanche diode, triggered when reverse voltage exceeds its 43V standoff rating, entering low-impedance clamping mode to divert surge energy away from downstream circuitry. Its glass-passivated die ensures stable breakdown characteristics and long-term reliability under repetitive transients.
It conforms to IEC-61000-4-2 Level 4 (30kV air/30kV contact) and supports HBM (8kV), CDM (1kV), and MM (800V) ESD immunity. The unidirectional configuration includes a cathode band for polarity identification and requires correct orientation relative to protected rail polarity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains 10×1000µs surges up to this level without failure; defines maximum transient energy absorption capability. |
| Reverse Standoff Voltage (VRWM) | 43.0V - maximum continuous DC or RMS voltage the device blocks without clamping; sets minimum operating rail compatibility (e.g., 36–48V systems). |
| Breakdown Voltage (VBR) | 47.8–52.8V @ 1.0mA - voltage range where avalanche conduction begins; ensures reliable triggering before protected circuit damage. |
| Clamping Voltage (VC) | 69.4V @ 43.2A - maximum voltage seen by protected circuit during 10×1000µs surge; critical for ensuring < VMAX of downstream ICs. |
| Peak Pulse Current (IPP) | 43.2A - maximum non-repetitive surge current the device can safely shunt; determines survivability against lightning-induced or inductive-switching transients. |
| Reverse Leakage (IR) | 5.0µA @ 43V - minimal off-state current at VRWM; ensures negligible power loss and no interference with low-power sensing circuits. |
| ESD Rating | 30kV air / 30kV contact per IEC-61000-4-2 - qualifies for front-panel, connector, and port-level ESD protection in harsh environments. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic body with matte tin-plated leads; UL 94V-0 rated; 0.21g weight; moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge return path | Connected to system ground or low-impedance reference; must be routed with minimal inductance to preserve clamping performance. |
| Anode | Protected line connection | Connected directly to the rail or signal line requiring protection; placement must precede any series impedance (e.g., fuse, ferrite). |
Key Features
| Feature | Design Value |
|---|---|
| 3000W peak pulse rating | Enables protection against high-energy transients including lightning-induced surges (IEC 61000-4-5) and inductive load switching in 48V industrial systems. |
| Glass-passivated die construction | Ensures stable VBR and low leakage over temperature and lifetime; eliminates risk of passivation layer degradation under humidity or bias stress. |
| Lead-free, RoHS 3 & "Green" compliant | Contains <900ppm Br, <900ppm Cl (<1500ppm total Br+Cl), <1000ppm Sb; meets global environmental compliance requirements for automotive and industrial OEMs. |
| JEDEC-qualified high-reliability grade | Validated per AEC-Q standards for extended temperature operation (-55°C to +150°C junction), supporting use in under-hood and factory-floor applications. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
|
Use Scenario: Protection of 48V DC bus inputs against inductive kickback from H-bridge switching and lightning-induced surges on outdoor cabinet feeds. IC Role / Device Role / Timing Role: Primary-level unidirectional TVS placed directly across input terminals, upstream of bulk capacitors and DC-DC converters. Use Value: Clamps transients to ≤69.4V, preserving integrity of 75V-rated MOSFETs and controller ICs while surviving 43.2A pulses per IEC 61000-4-5. |
Use Scenario: Input-stage surge suppression on -48V telecom rectifier outputs feeding shelf-level distribution boards. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to system ground, absorbing common-mode surges coupled onto DC distribution lines. Use Value: Withstands 30kV IEC-61000-4-2 ESD events and maintains <5µA leakage at -48V nominal, preventing standby power drain in always-on network infrastructure. |
| Factory Automation I/O Modules | EV Charging Station Control Boards |
|
Use Scenario: Protection of 24V/48V digital input channels (e.g., limit switches, sensor interfaces) exposed to field wiring noise and accidental AC mains contact. IC Role / Device Role / Timing Role: Point-of-entry TVS on each channel, mounted adjacent to connector pins to minimize trace inductance. Use Value: Limits clamped voltage to 69.4V during 8/20µs surges, ensuring compatibility with 70V-tolerant GPIOs and isolators without additional series resistance. |
Use Scenario: DC-link overvoltage suppression in 1000V-class EV charging control units handling grid transients and regenerative braking feedback. IC Role / Device Role / Timing Role: Secondary-level clamp on auxiliary 48V control rail, coordinated with primary MOV-based protection. Use Value: Provides fast-response (nanosecond-scale) clamping with precise 43V standoff, enabling tighter design margins than polymer-based alternatives in space-constrained PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A (Diodes Inc.) | Same 43V VRWM and 69.4V VC, but 600W peak power rating (vs. 3000W); SMB package (smaller footprint, lower thermal mass). | Restricted to lower-energy transients (e.g., board-level ESD only); unsuitable for lightning or inductive switching in industrial power rails. | Select when space constraints dominate and surge threat level is limited to IEC-61000-4-2 only. |
| 1.5SMCJ43A (ON Semiconductor) | Identical 43V VRWM, 69.4V VC, and 3000W rating; same SMC package; minor differences in VBR tolerance (47.8–52.8V vs. 47.8–53.0V) and IR spec (5µA vs. 10µA). | Drop-in compatible in layout and electrical behavior; qualified to AEC-Q101 but not explicitly JEDEC-high-reliability rated like Diodes' version. | Select when automotive qualification (AEC-Q101) is mandatory and JEDEC high-reliability validation is secondary. |
Compared with SMBJ43A, the 3.0SMCJ43A-13 delivers five times higher surge energy handling for infrastructure-grade protection; versus 1.5SMCJ43A, it offers tighter leakage control and JEDEC-aligned reliability validation for extended-temperature industrial deployments.
Availability
3.0SMCJ43A-13 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, factory automation I/O modules, and EV charging station control boards requiring stable component supply and full traceability.
Supply support for 3.0SMCJ43A-13 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The 3.0SMCJ series belongs to Diodes' high-power TVS portfolio, engineered specifically for robust front-end surge protection in industrial, telecom, and transportation systems demanding >1000W pulse handling and extended temperature reliability.
FAQ
What is the maximum operating temperature for 3.0SMCJ43A-13?
The junction temperature range is -55°C to +150°C, with thermal derating beginning above +25°C ambient per Figure 1 in DS30818 Rev. 18-2. At +125°C ambient, peak pulse power drops to ~55% of rated 3000W, requiring careful PCB copper area design and airflow consideration in enclosed enclosures.
Is 3.0SMCJ43A-13 suitable for bidirectional signal line protection?
No - it is a unidirectional TVS with a cathode band marking; bidirectional protection requires the "C" variant (e.g., 3.0SMCJ43CA-13). Using this part on AC or floating differential signals risks forward conduction and failure during negative half-cycles.
How does the 3.0SMCJ43A-13 compare to MOV-based protection?
Unlike metal-oxide varistors, this TVS offers faster response (<1ps vs. ~20ns), tighter voltage tolerance (±10% VBR vs. ±20% MOV), no capacitance-related signal distortion, and no aging or leakage drift over time - making it preferred for precision DC rail and low-leakage applications.
Can 3.0SMCJ43A-13 be used in automotive applications?
While qualified to JEDEC high-reliability standards and rated for -55°C to +150°C operation, it is not AEC-Q101 qualified. For automotive use, Diodes recommends the Q-suffix automotive-grade variant (e.g., 3.0SMCJ43AQ-13), which undergoes additional stress testing and PPAP documentation.
3.0SMCJ43A-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AB, SMC
- Series:
- 3.0SMCJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 43.2A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
3.0SMCJ43A-13 FAQ
1.How can I place an order for 3.0SMCJ43A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ43A-13 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 3.0SMCJ43A-13 reliable?
The price and inventory of 3.0SMCJ43A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ43A-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ43A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ43A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ43A-13?
3.0SMCJ43A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ43A-13 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 3.0SMCJ43A-13?
For technical support, including 3.0SMCJ43A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ43A-13 requirements.
6.How does Aetrix verify that 3.0SMCJ43A-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ43A-13 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 3.0SMCJ43A-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ43A-13?
All 3.0SMCJ43A-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ43A-13, 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 3.0SMCJ43A-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ43A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ43A-13 Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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