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Diodes Incorporated 3.0SMCJ51A-13
- Part No.:
- 3.0SMCJ51A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ51A-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,703
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Product details
Overview
3.0SMCJ51A-13 from Diodes Incorporated is a unidirectional 3000W surface-mount transient voltage suppressor (TVS) diode with 51V reverse standoff voltage, 82.4V max clamping voltage at 36.4A peak pulse current, and glass-passivated junction for robust ESD protection in DC power rails and I/O lines. It delivers IEC-61000-4-2 ±30kV air/contact ESD immunity and is used in industrial power supplies and automotive body control modules.
For engineers reviewing the 3.0SMCJ51A-13 datasheet, 3.0SMCJ51A-13 pinout, 3.0SMCJ51A-13 application, or 3.0SMCJ51A-13 equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, peak pulse current handling under 10/1000μs surge, thermal derating above +25°C ambient, and SMC package solderability per MIL-STD-202.
Technical Context
This TVS operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds 51V standoff and clamping within 1ns to ≤82.4V at 36.4A (10/1000μs waveform). Its glass-passivated die ensures stable breakdown and low leakage (<5μA at VRWM).
Designed for single-pulse transients, it supports ≤4 pulses/minute at 8.3ms half-sine surge (300A peak), with thermal derating to 50% power at +125°C ambient per Fig. 1. No polarity indicator is present-cathode band denotes unidirectional conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains 10/1000μs surges up to 36.4A without failure |
| Reverse Standoff Voltage | 51V - maximum continuous DC voltage before significant leakage begins |
| Clamping Voltage | 82.4V @ 36.4A - limits downstream voltage during surge to protect 75V-rated ICs |
| Breakdown Voltage | 56.7–62.7V @ 1mA - defines precise avalanche initiation range for design margining |
| ESD Rating | ±30kV contact/air (IEC-61000-4-2) - meets Level 4 system-level ESD immunity |
| Operating Temp | −55°C to +150°C - qualified for under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - 7.75mm × 6.22mm footprint with 2.75mm height, JEDEC-compliant |
Pinout & Package
Package: SMC (DO-214AB), molded plastic, UL 94V-0 rated, 0.21g weight. Cathode band denotes terminal 1 (anode is terminal 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (Banded End) | Cathode | Connected to protected line; conducts during reverse overvoltage event |
| Terminal 2 (Non-banded End) | Anode | Connected to ground or lower-potential rail; completes clamping path |
Key Features
| Feature | Design Value |
|---|---|
| 3000W Peak Pulse Power | Enables protection against high-energy lightning-induced surges (IEC 61000-4-5 Level 3/4) on 24V/48V systems |
| Glass-Passivated Die | Ensures stable VBR over temperature and lifetime, with <5μA leakage at 51V |
| RoHS & Halogen-Free | Complies with EU RoHS 3 (2015/863/EU) and Diodes' "Green" standard (<900ppm Br+Cl, <1000ppm Sb) |
| JEDEC High-Reliability Qualification | Validated per AEC-Q standards for automotive-grade reliability without Q-suffix |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24V CAN/LIN bus lines exposed to load dump and ISO 7637-2 pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS clamps transients to <85V, preventing damage to transceiver ESD structures. Use Value: 82.4V clamping at 36.4A provides 10V margin below typical 75V transceiver absolute max rating. | Use Scenario: 12V supply rail in door module subjected to jump-start spikes and alternator ripple. IC Role / Device Role / Timing Role: Fast-response (≤1ns) avalanche clamp diverts >100A surge energy away from MCU and driver ICs. Use Value: 3000W rating handles 100ms load-dump events per ISO 16750-2 without degradation. |
| Telecom Power Input Stage | Renewable Energy Inverter DC Link |
Use Scenario: −48V telecom rectifier output feeding backplane with hot-swap transients. IC Role / Device Role / Timing Role: Standoff at 51V allows normal operation while clamping 100V surges to safe levels. Use Value: Low 5μA leakage at VRWM minimizes standby power loss across thousands of nodes. | Use Scenario: 400V DC link in solar inverter exposed to grid-switching transients. IC Role / Device Role / Timing Role: Paired with higher-voltage TVS in series to distribute clamping stress across multiple devices. Use Value: SMC package enables automated placement and reflow compatibility with high-power PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51A | 600W rating, same 51V VRWM and 85V VC, SMB package (smaller footprint, lower power) | Lower surge capacity suits consumer-grade 5V/12V USB or sensor interfaces | Select when board space is constrained and peak surge <12A suffices |
| 1.5SMCJ51A | 1500W rating, identical VRWM/VC, same SMC package but lower PPK | Targeted at cost-sensitive industrial controls with moderate surge exposure | Choose for BOM cost reduction where 3000W headroom is unnecessary |
Compared with SMBJ51A and 1.5SMCJ51A, the 3.0SMCJ51A-13 delivers double the surge energy handling of the 1.5kW variant and five times that of the SMBJ series-critical for automotive and heavy-industrial deployments where single-event robustness is non-negotiable.
Availability
3.0SMCJ51A-13 is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, telecom power inputs, and renewable energy inverters requiring stable component supply across multi-year production cycles.
Supply support for 3.0SMCJ51A-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with manufacturing certified to IATF 16949 and quality systems aligned with AEC-Q standards.
This device belongs to the 3.0SMCJ series of high-power TVS diodes engineered for ruggedized transient suppression in automotive, industrial, and telecom infrastructure-designed to replace older 1.5kW and 600W families where surge energy demands exceed legacy ratings.
FAQ
What is the maximum clamping voltage of the 3.0SMCJ51A-13 at its rated peak pulse current?
The maximum clamping voltage is 82.4V at 36.4A peak pulse current under the standardized 10/1000μs waveform (per datasheet note 11). This value is guaranteed across −55°C to +150°C operating temperature and defines the upper voltage limit imposed on protected circuitry during surge events.
Is the 3.0SMCJ51A-13 unidirectional or bidirectional, and how is polarity identified?
The 3.0SMCJ51A-13 is unidirectional, indicated by a cathode band on Terminal 1. It conducts only when reverse voltage exceeds 51V, making it suitable for DC rail protection where polarity is fixed. Bidirectional variants (e.g., 3.0SMCJ51CA-13) lack the band and suppress surges in both directions.
Can this TVS diode be used in automotive applications without AEC-Q qualification?
Yes-the 3.0SMCJ51A-13 is JEDEC-qualified for high reliability and manufactured in IATF 16949-certified facilities, meeting baseline automotive robustness requirements. However, for formal AEC-Q200 compliance, the Q-suffix version (e.g., 3.0SMCJ51AQ-13) must be specified per Diodes' automotive product roadmap.
What is the recommended PCB pad layout for optimal thermal performance?
Per Diodes' suggested layout for SMC packages, use 7.75mm × 6.22mm pads with ≥2.0mm thermal relief spokes to internal ground planes. Minimum copper area per terminal is 8.00mm² (0.013mm thick) to sustain 300A surge without trace fusing, as validated in datasheet note 6.
3.0SMCJ51A-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):
- 51V
- Voltage - Breakdown (Min):
- 56.7V
- Voltage - Clamping (Max) @ Ipp:
- 82.4V
- Current - Peak Pulse (10/1000µs):
- 36.4A
- 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
3.0SMCJ51A-13 FAQ
1.How can I place an order for 3.0SMCJ51A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ51A-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 3.0SMCJ51A-13 reliable?
The price and inventory of 3.0SMCJ51A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ51A-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ51A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ51A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ51A-13?
3.0SMCJ51A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ51A-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 3.0SMCJ51A-13?
For technical support, including 3.0SMCJ51A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ51A-13 requirements.
6.How does Aetrix verify that 3.0SMCJ51A-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ51A-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 3.0SMCJ51A-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ51A-13?
All 3.0SMCJ51A-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ51A-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 3.0SMCJ51A-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ51A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ51A-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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Diodes Incorporated
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Diodes Incorporated
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