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Diodes Incorporated 3.0SMCJ70A-13
- Part No.:
- 3.0SMCJ70A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ70A-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,590
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Product details
Overview
3.0SMCJ70A-13 from Diodes Incorporated is a unidirectional 3000W surface-mount transient voltage suppressor (TVS) diode with 70V reverse standoff voltage, 113V max clamping voltage at 26.5A peak pulse current, and glass-passivated die construction. It protects DC power rails and signal lines in industrial motor drives, telecom power supplies, and automotive body control modules against ESD, lightning surges, and inductive switching transients.
For engineers reviewing the 3.0SMCJ70A-13 datasheet, 3.0SMCJ70A-13 pinout, 3.0SMCJ70A-13 application, or 3.0SMCJ70A-13 equivalent, key selection criteria include clamping voltage margin relative to protected IC VMAX, IEC-61000-4-2 ESD robustness (30kV air/30kV contact), thermal derating above +25°C, and SMC package solderability per MIL-STD-202.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal bias (VRWM = 70V), leakage remains ≤5µA; during transient events, it avalanches at VBR = 77.8–86.0V (IT = 1mA) and clamps to ≤113V at IPP = 26.5A (10×1000µs waveform). Its glass-passivated junction ensures stable breakdown characteristics and low capacitance.
Thermal performance is defined by -55°C to +150°C operating range and pulse derating per Fig. 1 - power drops to ~75% at +100°C ambient. The SMC package provides 0.21g mass and UL 94V-0 flammability rating, supporting high-reliability PCB mounting on 8mm² copper land patterns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains 10×1000µs surge without failure; defines maximum transient energy absorption capability |
| Reverse Standoff Voltage | 70V - maximum continuous DC or RMS voltage before significant leakage; sets upper limit for protected circuit operating voltage |
| Clamping Voltage | 113V @ 26.5A - maximum voltage seen by downstream circuit during worst-case 10×1000µs surge; determines protection margin for 100V-rated components |
| Breakdown Voltage | 77.8–86.0V @ 1mA - precise avalanche initiation range; ensures predictable turn-on behavior across temperature and unit variation |
| ESD Rating | 30kV air / 30kV contact per IEC-61000-4-2 - qualifies for direct interface protection in handheld and exposed port applications |
| Operating Temperature | -55°C to +150°C - supports under-hood automotive, industrial inverters, and outdoor telecom equipment deployment |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic body with matte tin-plated leads; UL 94V-0 rated; moisture sensitivity level 1 per J-STD-020; weight ≈0.21g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode reference for unidirectional conduction | Connects to protected line; cathode ties to higher-potential rail (e.g., +12V, +24V, +48V) to clamp positive transients to ground |
| Anode | Return path to system ground | Must be routed with low-inductance connection to chassis or power ground plane to minimize clamping overshoot during fast transients |
Key Features
| Feature | Design Value |
|---|---|
| 3000W peak pulse power | Enables single-device protection of 48V telecom DC feeds against 10/700µs lightning surges up to 4kV (IEC 61000-4-5 Level 4) |
| Glass-passivated die | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure; eliminates passivation-related early-life failures |
| Lead-free & RoHS 3 compliant | Meets EU Directive 2015/863/EU with <900ppm Br, <900ppm Cl, <1000ppm Sb; qualified for lead-free reflow (J-STD-020) |
| High ESD immunity | 30kV air/30kV contact per IEC-61000-4-2 allows direct placement on USB, RS-485, CAN, and Ethernet PHY interfaces without additional series impedance |
Applications
| Industrial Motor Drives | Telecom DC Power Supplies |
|---|---|
|
Use Scenario: Protection of gate drivers and current-sense amplifiers against inductive kickback from IGBTs/MOSFETs during PWM switching. IC Role / Device Role / Timing Role: Shunt clamping device placed across DC bus or gate resistor network to limit voltage spikes to safe levels for SiC/GaN driver ICs. Use Value: Prevents destructive overvoltage on 100V-rated gate drivers during 200ns rise-time transients; maintains system uptime in variable-frequency drives. |
Use Scenario: Input-stage surge suppression on -48V telecom rectifier outputs feeding backplane distribution. IC Role / Device Role / Timing Role: Primary transient shunt on bulk DC input, upstream of DC-DC converters and hot-swap controllers. Use Value: Limits 10/700µs lightning-induced surges to ≤113V, preserving -48V system integrity and avoiding brownout resets in base station power systems. |
| Automotive Body Control Modules | Industrial PLC I/O Terminals |
|
Use Scenario: Protection of LIN bus transceivers and microcontroller GPIOs against load dump and ISO 7637-2 pulses in 12V vehicle networks. IC Role / Device Role / Timing Role: Unidirectional TVS connected between LIN line and chassis ground to clamp negative transients and forward-bias positive spikes. Use Value: Survives 12V load dump pulses (ISO 7637-2 Pulse 5a) with peak clamping <113V, ensuring LIN communication continuity during alternator regulation faults. |
Use Scenario: Field-side protection on 24V digital input modules exposed to relay coil flyback and sensor cable ESD in factory automation. IC Role / Device Role / Timing Role: Line-to-ground TVS on each discrete input channel, placed immediately after screw terminal block. Use Value: Absorbs 8kV HBM ESD events and 1A inductive transients without degradation, eliminating false triggering and extending maintenance intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ70A (Diodes Inc.) | Same VRWM (70V) but lower PPK = 600W; SMB package (smaller footprint, lower thermal mass) | Not suitable for 3000W surge environments like telecom DC inputs or motor drive bus rails | Select only when space-constrained and surge energy is limited to ≤600W (e.g., low-power sensor interfaces) |
| 1.5SMC70A (ON Semiconductor) | Identical 70V VRWM and 3000W rating, but uses older SMC package variant with slightly higher VC = 115V @ 26A | Valid drop-in replacement where 2V higher clamping is acceptable; same JEDEC SMC mechanical outline | Prefer when sourcing from ON Semi's authorized channels; verify VC margin against protected IC absolute maximum ratings |
Compared with SMBJ70A, 3.0SMCJ70A-13 delivers 5× higher surge energy handling for mission-critical power rails; versus 1.5SMC70A, it offers tighter clamping (113V vs. 115V) and improved thermal derating consistency across temperature.
Availability
3.0SMCJ70A-13 is available at Aetrix Electronics and suitable for industrial motor drives, telecom DC power supplies, and automotive body control modules requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for 3.0SMCJ70A-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 North America.
The 3.0SMCJ series belongs to Diodes' high-power TVS portfolio, engineered specifically for industrial-grade surge immunity in harsh environments-emphasizing repeatable clamping, low leakage, and AEC-Q200-aligned reliability.
FAQ
What is the maximum clamping voltage of the 3.0SMCJ70A-13 under standard test conditions?
The maximum clamping voltage is 113V measured at 26.5A peak pulse current using the 10×1000µs waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range (-55°C to +150°C) and represents the highest voltage imposed on the protected circuit during worst-case surge events.
Is the 3.0SMCJ70A-13 suitable for bidirectional signal line protection?
No - the "A" suffix denotes unidirectional configuration with a cathode band. For bidirectional protection (e.g., AC lines or differential buses), use the "CA" variant (e.g., 3.0SMCJ70CA-13), which has symmetrical breakdown in both polarities and no polarity marking.
How does the SMC package affect thermal performance compared to SMA or SMB?
The SMC package provides larger copper pad area (8mm² recommended) and higher thermal mass than SMA/SMB, enabling better heat dissipation during repetitive surges. Its 0.21g mass and 6.6–7.11mm width improve mechanical stability on high-vibration boards, while maintaining compatibility with standard SMT reflow profiles.
Does the 3.0SMCJ70A-13 meet automotive qualification standards?
As supplied, it is not AEC-Q200 qualified. However, Diodes offers automotive-grade equivalents with "Q" suffix (e.g., 3.0SMCJ70AQ-13) manufactured in IATF 16949-certified facilities and tested to AEC-Q200 stress requirements - these are required for under-hood or safety-critical vehicle applications.
3.0SMCJ70A-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):
- 70V
- Voltage - Breakdown (Min):
- 77.8V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 26.5A
- 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
3.0SMCJ70A-13 FAQ
1.How can I place an order for 3.0SMCJ70A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ70A-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 3.0SMCJ70A-13 reliable?
The price and inventory of 3.0SMCJ70A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ70A-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ70A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ70A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ70A-13?
3.0SMCJ70A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ70A-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 3.0SMCJ70A-13?
For technical support, including 3.0SMCJ70A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ70A-13 requirements.
6.How does Aetrix verify that 3.0SMCJ70A-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ70A-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 3.0SMCJ70A-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ70A-13?
All 3.0SMCJ70A-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ70A-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 3.0SMCJ70A-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ70A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ70A-13 Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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Diodes Incorporated
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