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Taiwan Semiconductor Corporation SMCJ5.0CAH
- Part No.:
- SMCJ5.0CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ5.0CAH.pdf
- Description:
- 1500W, 6.7V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,132
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Product details
Overview
SMCJ5.0CAH from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, designed for automotive-grade ESD and surge protection. It features 6.4–7.0 V breakdown voltage (VBR), 10 V working stand-off voltage (VWM), ≤1.0 ps response time, and clamps to ≤9.2 V at 1000 A peak pulse current - ideal for protecting CAN/LIN bus interfaces and power inputs in automotive ECUs.
For engineers reviewing the SMCJ5.0CAH datasheet, SMCJ5.0CAH pinout, SMCJ5.0CAH application, or SMCJ5.0CAH equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, low leakage (<5 µA @ 10 V), and DO-214AB thermal performance (RθJC = 10 °C/W).
Technical Context
The SMCJ5.0CAH implements a glass-passivated silicon junction optimized for fast transient suppression in bidirectional signal and power lines. Its unidirectional counterpart (SMCJ5.0H) shares identical package and thermal specs but differs in polarity marking and forward conduction behavior; the 'CAH' suffix explicitly denotes bidirectional configuration with symmetrical electrical characteristics in both directions.
It meets automotive surge immunity standards including ISO 7637-2 (Pulse 1, 2a, 2b, 3a, 3b) and operates across –55 °C to +150 °C junction temperature range. The device's 1500 W peak pulse power rating is specified at 1 ms pulse width per Fig.5 waveform, with derating above 25 °C ambient per Fig.2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - maximum continuous reverse voltage before significant leakage; sets safe operating margin below breakdown |
| VBR min/max | 6.4 V / 7.0 V @ 10 mA - ensures reliable turn-on during transients while avoiding false triggering |
| VC @ IPPM | 9.2 V @ 1000 A - clamping voltage defines worst-case stress on protected downstream circuitry |
| IPPM | 1000 A - peak surge current handling capacity under 10/1000 µs waveform per REA standard |
| RθJC | 10 °C/W - enables effective heat transfer from junction to case, critical for sustained surge duty cycles |
| TJ max | +150 °C - supports operation in under-hood automotive environments without thermal shutdown |
| IR @ VWM | <5 µA - ultra-low leakage preserves battery life in always-on vehicle networks |
Pinout & Package
DO-214AB (SMC) surface-mount package with matte tin-plated leads; polarity indicated by cathode band - for bidirectional SMCJ5.0CAH, the band marks the common terminal between two opposing junctions; no anode/cathode distinction applies in normal operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode Band End | Common Terminal (Bidirectional) | Serves as shared connection point for dual anti-parallel junctions; symmetric clamping in either direction |
| Opposite End | Common Terminal (Bidirectional) | Electrically identical to cathode-band end; no functional polarity - device mounts without orientation constraint |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics use with extended temperature cycling, mechanical shock, and humidity testing |
| Glass passivated junction | Enhances long-term reliability and moisture resistance versus epoxy-passivated alternatives |
| ISO 7637-2 compliant | Guarantees robustness against real-world automotive load-dump and inductive-switching transients |
| Response time <1.0 ps | Clamps before most IC input structures can be damaged by ESD or fast-rising surges |
| Moisture sensitivity level 1 | Enables direct placement without baking; eliminates production delays and moisture-related popcorning |
Applications
| Automotive CAN Bus Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L lines in body control modules against ISO 7637-2 Pulse 2b (load dump) and ESD events. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt surge energy before reaching CAN transceiver. Use Value: Maintains signal integrity with <9.2 V clamping while surviving repeated 1000 A pulses - prevents transceiver latch-up or permanent damage. | Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers exposed to field-wiring transients. IC Role / Device Role / Timing Role: Standoff protection element mounted upstream of optocoupler input stage to absorb inductive kickback from solenoid switching. Use Value: 10 V VWM allows stable 24 V DC operation; 1500 W rating handles worst-case 200 V/100 ms transients without degradation. |
| Telecom Power Input Protection | Consumer USB-C Port ESD Suppression |
Use Scenario: Securing 48 V PoE-powered equipment front-end against lightning-induced surges on Ethernet cables. IC Role / Device Role / Timing Role: Primary-level TVS on DC input rail, coordinated with upstream GDT and downstream polymer PTC for multi-stage protection. Use Value: Fast <1 ps response captures initial surge edge; DO-214AB footprint supports high-current PCB traces and thermal relief pads. | Use Scenario: Adding secondary-level ESD protection to USB-C CC and VBUS lines in portable devices where space is constrained. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF typical) bidirectional clamp placed adjacent to connector to meet IEC 61000-4-2 Level 4 (±15 kV air/±8 kV contact). Use Value: Sub-µA leakage preserves battery runtime; bidirectional symmetry eliminates layout polarity concerns during automated assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0CA | 600 W rating, SMB package (smaller footprint, higher RθJA = 85 °C/W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 1 or 2b in automotive | Select when board space is critical and surge threat level is limited to IEC 61000-4-5 Level 3 (0.5 kV) |
| TPSMD5.0C | 1500 W rating, same DO-214AB package, but non-AEC-Q101 and higher IR (≤10 µA @ 10 V) | Acceptable for industrial/commercial use; not validated for automotive temperature cycling or vibration | Choose for cost-sensitive non-automotive designs requiring identical power handling and footprint |
Compared with SMBJ5.0CA and TPSMD5.0C, the SMCJ5.0CAH delivers superior automotive-grade reliability via AEC-Q101 qualification, tighter leakage control (<5 µA), and proven ISO 7637-2 immunity - making it the only option qualified for safety-critical ECU power and data line protection.
Availability
SMCJ5.0CAH is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, telecom power supplies, and consumer USB-C interface protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMCJ5.0CAH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in high-reliability protection devices and power management components.
The SMCJ series was developed specifically for automotive and industrial surge immunity requirements, emphasizing AEC-Q101 compliance, ISO 7637-2 robustness, and high-power transient clamping in compact surface-mount packages.
FAQ
What does the 'CAH' suffix indicate in SMCJ5.0CAH?
The 'CAH' suffix in SMCJ5.0CAH designates a bidirectional configuration with symmetrical clamping characteristics in both polarities. Unlike unidirectional variants (e.g., SMCJ5.0H), the SMCJ5.0CAH contains two opposing junctions enabling equal protection for positive and negative transients - essential for differential buses like CAN or AC-coupled signal lines. This is confirmed in the datasheet's "Devices for bipolar applications" section.
Is SMCJ5.0CAH AEC-Q101 qualified, and what tests does that cover?
Yes, SMCJ5.0CAH is AEC-Q101 qualified per Version A2102 documentation. This certification covers stress tests including high-temperature operating life (HTOL), temperature cycling, mechanical shock, vibration, and unbiased highly accelerated stress test (uHAST). It validates suitability for automotive under-hood and cabin applications where reliability over 15+ years is mandatory - a requirement explicitly stated in the FEATURES section.
What is the maximum clamping voltage of SMCJ5.0CAH, and how is it measured?
The maximum clamping voltage of SMCJ5.0CAH is 9.2 V, measured at 1000 A peak pulse current (IPPM) using the 10/1000 µs double-exponential waveform defined in Fig.5 of the datasheet. This value represents the worst-case voltage seen by protected circuitry during a standardized surge event and is guaranteed across the full operating temperature range - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings.
Can SMCJ5.0CAH replace SMCJ5.0AH in an existing design?
No - SMCJ5.0CAH and SMCJ5.0AH are functionally distinct. SMCJ5.0AH is unidirectional (cathode-marked), while SMCJ5.0CAH is bidirectional (no polarity dependence). Swapping them risks improper clamping on negative transients. The datasheet explicitly separates these types in the "Devices for bipolar applications" note and lists different marking codes (GDE vs. unspecified for CAH), confirming non-interchangeability without layout revision.
Does SMCJ5.0CAH meet ISO 7637-2, and which pulses are covered?
Yes, SMCJ5.0CAH meets ISO 7637-2 for Pulses 1, 2a, 2b, 3a, and 3b - verified in the FEATURES section. Pulse 1 simulates battery disconnect during alternator load dump; Pulse 2b models sudden load interruption; Pulse 3a/3b represent capacitive coupling and inductive switching noise. This full coverage confirms suitability for 12 V and 24 V automotive systems per OEM requirements.
SMCJ5.0CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 171A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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:
- DO-214AB (SMC)
SMCJ5.0CAH FAQ
1.How can I place an order for SMCJ5.0CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ5.0CAH 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 SMCJ5.0CAH reliable?
The price and inventory of SMCJ5.0CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ5.0CAH is usually 5 days.
3.What payment methods are accepted for SMCJ5.0CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ5.0CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ5.0CAH?
SMCJ5.0CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ5.0CAH 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 SMCJ5.0CAH?
For technical support, including SMCJ5.0CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ5.0CAH requirements.
6.How does Aetrix verify that SMCJ5.0CAH is sourced from the original manufacturer or authorized distributors?
All SMCJ5.0CAH 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 SMCJ5.0CAH meets industry standards.
7.What is the process for return or replacement of SMCJ5.0CAH?
All SMCJ5.0CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ5.0CAH, 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 SMCJ5.0CAH part is unused and in its original packaging.
Return procedure for SMCJ5.0CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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