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Diodes Incorporated 3.0SMCJ70AQ-13
- Part No.:
- 3.0SMCJ70AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ70AQ-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,153
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Product details
Overview
3.0SMCJ70AQ-13 from Diodes Incorporated is a unidirectional 3000W surface-mount transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in automotive and industrial power rails. It features a 70V reverse standoff voltage (VRWM), 113V maximum clamping voltage (VC) at 26.5A peak pulse current, and IEC-61000-4-2 ESD immunity of 30kV (air/contact). It is used in 12V/24V battery-supplied ECUs to clamp load-dump transients and ISO 7637-2 pulses.
For engineers reviewing the 3.0SMCJ70AQ-13 datasheet, 3.0SMCJ70AQ-13 pinout, 3.0SMCJ70AQ-13 application, or 3.0SMCJ70AQ-13 equivalent, key selection criteria include clamping voltage margin relative to system rail, peak pulse current capability under 10/1000μs waveform, thermal derating above +25°C ambient, and AEC-Q101 qualification status for automotive deployment.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device in parallel with protected circuitry. Its glass-passivated junction enables fast response (<1 ns) to transients and stable breakdown behavior across temperature (–55°C to +150°C operating range). The unidirectional configuration provides asymmetric conduction-blocking reverse voltage up to 70V while clamping forward surges above VBR (77.8–86.0V).
It complies with AEC-Q101 stress test requirements for automotive discrete semiconductors and is manufactured in IATF 16949-certified facilities. The SMC package supports 3000W peak pulse power dissipation when mounted on 8.00 mm² copper land areas, with thermal derating beginning at +25°C per JEDEC JESD22-A104.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains single 10/1000μs surge without failure under specified PCB layout |
| Reverse Standoff Voltage (VRWM) | 70V - maximum continuous DC or RMS voltage before leakage exceeds 5μA |
| Clamping Voltage (VC) | 113V @ 26.5A - limits downstream voltage during ISO 7637-2 Pulse 5a (load dump) |
| Breakdown Voltage (VBR) | 77.8–86.0V @ 1mA - ensures reliable turn-on before protected ICs exceed absolute max ratings |
| ESD Rating | 30kV air / 30kV contact per IEC-61000-4-2 - protects against human handling events |
| Operating Temperature | –55°C to +150°C - validated for under-hood automotive environments |
Pinout & Package
Package: SMC (DO-214AB), molded plastic body with matte tin-plated leads; UL 94V-0 rated; moisture sensitivity level 1 per J-STD-020; weight ≈ 0.21 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; defines cathode-to-anode polarity for unidirectional clamping |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., battery rail); carries full surge current during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| 3000W Peak Pulse Power | Enables robust protection against ISO 7637-2 Pulse 5a (load dump) in 12V/24V systems without derating |
| AEC-Q101 Qualified | Validated for automotive use including temperature cycling, HTRB, and ESD stress per JEDEC standards |
| Glass Passivated Junction | Ensures stable VBR and low leakage over lifetime; eliminates risk of passivation layer delamination |
| RoHS & Halogen-Free | Meets EU RoHS 3 (2015/863/EU) and Diodes' "Green" definition (<900ppm Br/Cl, <1000ppm Sb) |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects microcontroller I/O and CAN transceiver power pins from battery line transients during engine cranking and alternator load dump. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12V rail and chassis ground; clamps within 1 ns to limit voltage to ≤113V. Use Value: Prevents latch-up or permanent damage to 3.3V/5V logic supplies downstream of LDO regulators during 120V/100ms load-dump events. |
Use Scenario: Shields 24V digital input isolation stage from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Primary protection device ahead of optocoupler input; absorbs energy from inductive kickback and lightning-induced surges. Use Value: Maintains functional safety integrity by ensuring input stage survives repeated 1kV/500A 10/1000μs surges per IEC 61000-4-5 Level 4. |
| Automotive Infotainment Power Supply | Telecom Remote Radio Unit (RRU) |
Use Scenario: Secures buck converter input stage in head unit power management against jump-start transients up to 200V. IC Role / Device Role / Timing Role: First-line clamping device on main 12V input; coordinates with secondary TVS and fuse for staged protection. Use Value: Reduces need for oversized input capacitors by limiting transient overshoot to safe levels for MOSFET gate oxide and controller ICs. |
Use Scenario: Guards 48V PoE-derived supply rail in outdoor base station radios exposed to lightning-induced surges on metallic feed lines. IC Role / Device Role / Timing Role: High-power TVS on DC input before DC-DC converters; handles repetitive surges due to proximity to tower grounding systems. Use Value: Extends mean time between failures (MTBF) by absorbing >95% of surge energy before it reaches sensitive RF front-end components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ70A | 600W rating, SMA package, lower VC (115V), same VRWM (70V) | Limited to lower-energy transients (e.g., ESD-only); unsuitable for ISO 7637-2 Pulse 5a | Select only if system surge energy is ≤600W and board space constraints prohibit SMC footprint |
| 1.5SMC70A | 1500W rating, same SMC package, higher VC (115V), same VRWM (70V) | Insufficient for automotive load dump; fails under 3000W 10/1000μs pulse | Use only in non-automotive industrial applications where peak surge is capped at 1500W |
Compared with SMAJ70A and 1.5SMC70A, the 3.0SMCJ70AQ-13 delivers 2× and 2× higher peak power handling respectively, enabling compliance with stringent automotive load-dump immunity requirements while maintaining identical 70V standoff and SMC mechanical compatibility.
Availability
3.0SMCJ70AQ-13 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, telecom remote radio units, and infotainment power supplies requiring stable component supply across extended product lifecycles.
Supply support for 3.0SMCJ70AQ-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' AEC-Q101-qualified TVS portfolio, engineered specifically for high-reliability automotive and industrial surge protection where sustained 3000W clamping performance and wide temperature operation are mandatory.
FAQ
Is the 3.0SMCJ70AQ-13 qualified to AEC-Q101?
Yes, the 3.0SMCJ70AQ-13 is fully qualified to AEC-Q101 Rev G for stress testing including HTGB, H3TRB, TCT, and ESD. The "Q" suffix explicitly denotes automotive-grade qualification, and it is manufactured in IATF 16949-certified facilities with PPAP documentation available upon request.
What is the difference between 3.0SMCJ70A and 3.0SMCJ70AQ-13?
The "Q" suffix indicates AEC-Q101 qualification and automotive change control; the "-13" denotes tape-and-reel packaging (3000 pcs/reel). Electrically and mechanically, both share identical VRWM (70V), VBR (77.8–86.0V), VC (113V), and SMC package dimensions-only qualification status and packaging differ.
Can this TVS be used in bidirectional configurations?
No-3.0SMCJ70AQ-13 is unidirectional, indicated by its cathode band marking and electrical asymmetry. For bidirectional protection, Diodes offers the 3.0SMCJ70CA-13 variant, which has symmetrical clamping in both polarities and no cathode band.
How does thermal derating affect its 3000W rating?
The 3000W rating applies only at TA = +25°C with recommended 8.00 mm² copper pad area. Derating begins immediately above +25°C per Figure 1: at +85°C ambient, peak pulse power drops to ~2100W; at +125°C, it falls to ~1300W-requiring system-level thermal analysis for high-temp deployments.
3.0SMCJ70AQ-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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
3.0SMCJ70AQ-13 FAQ
1.How can I place an order for 3.0SMCJ70AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ70AQ-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 3.0SMCJ70AQ-13 reliable?
The price and inventory of 3.0SMCJ70AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ70AQ-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ70AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ70AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ70AQ-13?
3.0SMCJ70AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ70AQ-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 3.0SMCJ70AQ-13?
For technical support, including 3.0SMCJ70AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ70AQ-13 requirements.
6.How does Aetrix verify that 3.0SMCJ70AQ-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ70AQ-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 3.0SMCJ70AQ-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ70AQ-13?
All 3.0SMCJ70AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ70AQ-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 3.0SMCJ70AQ-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ70AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ70AQ-13 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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