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Diodes Incorporated 3.0SMCJ70CAQ-13
- Part No.:
- 3.0SMCJ70CAQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ70CAQ-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:5,501
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Product details
Overview
3.0SMCJ70CAQ-13 from Diodes Incorporated is a bi-directional 3000W surface-mount transient voltage suppressor (TVS) designed for automotive power line protection. It features a 70V reverse standoff voltage (VRWM), 113V maximum clamping voltage (VC) at 26.5A peak pulse current (IPP), and AEC-Q101 qualification for under-hood applications such as engine control units and body control modules.
For engineers reviewing the 3.0SMCJ70CAQ-13 datasheet, 3.0SMCJ70CAQ-13 pinout, 3.0SMCJ70CAQ-13 application, or 3.0SMCJ70CAQ-13 equivalent, key selection criteria include ISO7637-2 Pulse 1/2a/3a/3b compliance, bi-directional surge handling capability, SMC package thermal performance, and automotive-grade reliability validation per IATF16949.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp transient overvoltages on DC power rails. Its bi-directional configuration enables symmetric suppression of both positive and negative polarity surges-critical for protecting CAN, LIN, and sensor supply lines exposed to load dump or inductive switching events.
It delivers 3000W peak pulse power (10×1000μs waveform), withstands 300A non-repetitive forward surge current (8.3ms half-sine), and maintains stable clamping performance across -55°C to +175°C junction temperature range-enabling robust operation in harsh automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains 10×1000μs transients without failure in automotive load-dump scenarios |
| Reverse Standoff Voltage (VRWM) | 70V - defines maximum continuous DC operating voltage before clamping initiates |
| Max Clamping Voltage (VC) | 113V @ 26.5A IPP - limits downstream IC stress during ISO7637-2 Pulse 1 (-150V) events |
| Peak Pulse Current (IPP) | 26.5A - quantifies surge-handling capacity under standardized 10×1000μs waveform |
| Operating Temperature | -55°C to +175°C - supports placement near engines, transmissions, and power electronics |
| AEC-Q101 Qualified | Yes - validated for automotive use with PPAP capability and IATF16949 manufacturing |
| Package | SMC (DO-214AB) - surface-mount footprint with 8.00mm² copper pad for thermal dissipation |
Pinout & Package
Package: SMC (DO-214AB), molded plastic, UL 94V-0 rated, 0.21g weight, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode Band End | Anode (for bi-directional device) | Marked end denotes one terminal of symmetrical bi-directional structure; no polarity dependency in circuit layout |
| Opposite End | Cathode (for bi-directional device) | Unmarked end completes the bi-directional pair; terminals are functionally interchangeable in PCB routing |
Key Features
| Feature | Design Value |
|---|---|
| 3000W Peak Pulse Power | Enables single-device protection against severe ISO7637-2 Pulse 1 (-150V) and Pulse 3a (-220V) transients |
| Bi-directional Clamping | Provides symmetrical suppression for both positive and negative surges without external polarity constraints |
| Low Clamping Ratio (VC/VRWM = 1.61) | Minimizes overvoltage stress on downstream 75V-rated power management ICs and microcontrollers |
| AEC-Q101 & IATF16949 Compliance | Guarantees production consistency, change control, and traceability for Tier 1 automotive programs |
| Halogen- and Antimony-Free | Meets automotive "Green" requirements (<900ppm Br, <900ppm Cl, <1000ppm Sb) per Diodes' definition |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) CAN Bus Supply |
|---|---|
Use Scenario: Protects 12V battery-fed ECU main power rail against load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary TVS clamp on input stage, placed upstream of DC-DC converters and LDOs. Use Value: Limits transient voltage to ≤113V during ISO7637-2 Pulse 1, preventing damage to 75V-rated power ICs. |
Use Scenario: Shields 5V/3.3V CAN transceiver VCC supply from coupled transients on vehicle chassis ground. IC Role / Device Role / Timing Role: Bi-directional rail clamp between BCM power domain and isolated CAN bus interface. Use Value: Suppresses ±220V ISO7637-2 Pulse 3a/3b spikes without polarity-sensitive layout constraints. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Electric Power Steering (EPS) Motor Driver Supply |
Use Scenario: Secures 12V input to image sensor modules mounted near engine compartments. IC Role / Device Role / Timing Role: First-line transient absorber before buck converter and serializer ICs. Use Value: Withstands 175°C ambient per AEC-Q101, maintaining clamping integrity during prolonged high-temp operation. |
Use Scenario: Guards H-bridge gate driver supplies against inductive kickback from EPS motor windings. IC Role / Device Role / Timing Role: High-energy clamp on 12V auxiliary rail feeding motor control logic and drivers. Use Value: Absorbs 300A surge current (8.3ms half-sine) without degradation, ensuring system-level fault tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ70CA | 2000W peak power, same VRWM/VC but lower IPP (18.2A), SMB package (smaller thermal mass) | Limited to lower-energy transients (e.g., ISO10605 only); unsuitable for full ISO7637-2 Pulse 1 compliance | Select when space-constrained layouts prioritize footprint over 3000W surge margin |
| SMCJ70CA | Identical electrical specs but non-automotive grade (no AEC-Q101, no PPAP support) | Not qualified for production automotive systems; restricted to industrial or prototyping use | Choose only for cost-sensitive non-automotive designs where qualification is not required |
Compared with SMBJ70CA and SMCJ70CA, the 3.0SMCJ70CAQ-13 uniquely combines 3000W surge rating, bi-directional symmetry, AEC-Q101 qualification, and IATF16949 traceability-making it the sole option for volume production of safety-critical automotive ECUs requiring full ISO7637-2 immunity.
Availability
3.0SMCJ70CAQ-13 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering modules requiring stable component supply across multi-year automotive production cycles.
Supply support for 3.0SMCJ70CAQ-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, specializing in high-reliability components for automotive, industrial, and computing markets.
The 3.0SMCJ series is engineered specifically for automotive transient suppression, targeting ISO7637-2 and ISO10605 compliance with AEC-Q101 validation and IATF16949 process control.
FAQ
What does the 'C' suffix in 3.0SMCJ70CAQ-13 indicate?
The 'C' suffix denotes a bi-directional configuration, meaning the device provides symmetrical clamping for both positive and negative voltage transients. This eliminates polarity concerns during PCB layout and enables protection of bidirectional signal lines or floating power domains without external diode pairing.
How does 3.0SMCJ70CAQ-13 meet ISO7637-2 Pulse 1 requirements?
With a 113V clamping voltage at 26.5A and 3000W peak power rating, it limits the -150V Pulse 1 transient to a safe level below the breakdown threshold of downstream 75V-rated power ICs. Its 300A surge current rating ensures survivability under worst-case 8.3ms half-sine wave stress.
Is the SMC package thermally sufficient for under-hood applications?
Yes-the SMC (DO-214AB) package, when mounted on 8.00mm² copper land areas, provides adequate thermal dissipation for 3000W pulses. Its -55°C to +175°C operating range and AEC-Q101 qualification confirm suitability for under-hood placement near engines and power electronics.
What marking code identifies 3.0SMCJ70CAQ-13 on the device body?
The top-side marking is 'HGP', per Diodes' Electrical Characteristics Table. This 3-character code uniquely identifies the 70V bi-directional variant within the 3.0SMCJ(C)AQ family and is laser-etched for traceability in automotive production.
3.0SMCJ70CAQ-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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
3.0SMCJ70CAQ-13 FAQ
1.How can I place an order for 3.0SMCJ70CAQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ70CAQ-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 3.0SMCJ70CAQ-13 reliable?
The price and inventory of 3.0SMCJ70CAQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ70CAQ-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ70CAQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ70CAQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ70CAQ-13?
3.0SMCJ70CAQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ70CAQ-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 3.0SMCJ70CAQ-13?
For technical support, including 3.0SMCJ70CAQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ70CAQ-13 requirements.
6.How does Aetrix verify that 3.0SMCJ70CAQ-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ70CAQ-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 3.0SMCJ70CAQ-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ70CAQ-13?
All 3.0SMCJ70CAQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ70CAQ-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 3.0SMCJ70CAQ-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ70CAQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ70CAQ-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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DESD5V0U1BB-7
Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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