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Taiwan Semiconductor Corporation SMCJ5.0AH
- Part No.:
- SMCJ5.0AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ5.0AH.pdf
- Description:
- 1500W, 6.7V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,973
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Product details
Overview
SMCJ5.0AH from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, designed for automotive-grade ESD and surge protection. It features a 6.4–7.0 V breakdown voltage (VBR), 9.2 V maximum clamping voltage (VC) at 1000 A peak pulse current, and <1.0 ps response time-ideal for protecting CAN/LIN bus interfaces and power supply rails in automotive control units.
For engineers reviewing the SMCJ5.0AH datasheet, SMCJ5.0AH pinout, SMCJ5.0AH application, or SMCJ5.0AH equivalent, key selection criteria include its AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, 10 V working stand-off voltage (VWM), sub-1 µA reverse leakage at 10 V, and unidirectional polarity with cathode band marking.
Technical Context
The SMCJ5.0AH operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve fast transient suppression with minimal capacitance. Its clamping action begins at VBR ≥6.4 V and limits induced surges to ≤9.2 V at 1000 A, enabling robust immunity against load dump and ESD events per IEC 61000-4-2 and ISO 10605.
Thermally, it sustains 150°C junction temperature with RθJA = 55°C/W and RθJC = 10°C/W, supporting high-reliability mounting on FR-4 PCBs with J-STD-002-compliant matte tin leads. The device is rated for 200 A non-repetitive forward surge (8.3 ms half-sine) and exhibits VF = 3.5 V at 100 A forward conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 6.4 V / 7.0 V - defines minimum voltage at which avalanche conduction initiates reliably under 10 mA test current |
| VWM | 10 V - maximum continuous reverse operating voltage before significant leakage occurs |
| VC@IPPM | 9.2 V at 1000 A - peak clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPK | 1500 W - peak pulse power handling capability per single 1 ms transient event |
| IR@VWM | <5 µA - ensures negligible standby current draw in low-power automotive modules |
| TJ max | 150 °C - enables operation in under-hood environments without thermal derating below full rating |
| Response time | <1.0 ps - ensures suppression activation prior to damage threshold of sensitive transceivers and MCUs |
Pinout & Package
DO-214AB (SMC) surface-mount package with cathode band marking on one end; dual-leaded, gull-wing configuration optimized for automated placement and reflow soldering. Matte tin-plated leads meet J-STD-002 solderability requirements and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to protected circuit ground or low-side return; conducts during positive transients when cathode is biased higher |
| Cathode | Avalanche clamping node | Connected to protected line (e.g., CAN_H); clamps reverse surges by conducting to ground when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test conditions including HTOL, TC, UHAST, and ESD-HBM/MM |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; supports standard SMT assembly without dry pack handling |
| RoHS & halogen-free | Complies with EU RoHS Directive 2011/65/EU and IEC 61249-2-21 for green manufacturing |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protecting 12 V supply rail and LIN bus lines from battery load dump and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between LIN transceiver VCC pin and chassis ground to clamp transients before they reach the transceiver's internal LDO. Use Value: Limits clamped voltage to 9.2 V, preventing overvoltage damage to 5 V tolerant LIN PHY while maintaining >10 V system margin during normal operation. | Use Scenario: Safeguarding 24 V digital input channels against field-wiring ESD and inductive kickback from solenoid valves. IC Role / Device Role / Timing Role: Mounted across input terminals (signal-to-ground) to shunt surge energy before it reaches optocoupler input stage. Use Value: Sub-1 ps response ensures clamping occurs within first 10 ns of ESD event, preserving signal integrity and avoiding false triggering of input logic. |
| Telecom Power Supply Front-End | Consumer Appliance Motor Drive Board |
Use Scenario: Guarding AC/DC adapter DC output against lightning-induced surges entering via secondary-side wiring. IC Role / Device Role / Timing Role: Placed between +VOUT and GND to absorb 1500 W transients without failure, complementing upstream MOV and fuse coordination. Use Value: 1500 W peak power rating allows single-device protection of 12–48 V outputs without parallel staging, reducing BOM count and layout area. | Use Scenario: Shielding microcontroller GPIOs and gate drivers from commutation spikes generated by BLDC motor back-EMF. IC Role / Device Role / Timing Role: Positioned at motor driver IC power pins (VDD/VBAT) to clamp voltage overshoot during PWM switching transitions. Use Value: 9.2 V clamping voltage prevents latch-up in 5 V logic sections while sustaining 200 A surge current per IEC 61000-4-4 Level 4 testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | Lower PPK = 400 W; VC = 9.2 V @ 43.3 A; DO-214AC (SMA) package | Not suitable for ISO 7637-2 Pulse 1 or high-current load dump; limited to low-energy ESD only | Select SMAJ5.0A only for cost-sensitive consumer applications where surge energy is <100 mJ and automotive qualification is not required. |
| SMCJ5.0A | Same 1500 W rating and DO-214AB package but lacks AEC-Q101 qualification and ISO 7637-2 validation | Acceptable for industrial equipment but not certified for automotive use cases requiring OEM compliance | Choose SMCJ5.0A for non-automotive designs needing identical electrical specs without automotive audit traceability. |
Compared with SMAJ5.0A and SMCJ5.0A, the SMCJ5.0AH provides verified AEC-Q101 reliability and full ISO 7637-2 immunity-making it the only option qualified for front-end protection in automotive ECUs where failure risk must be minimized under real-world vehicle-level transients.
Availability
SMCJ5.0AH is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and telecom power supply designs requiring stable component supply with full AEC-Q101 traceability and ISO 7637-2 compliance.
Supply support for SMCJ5.0AH 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 TVS diodes, rectifiers, and MOSFETs for automotive and industrial markets.
The SMCJ series is part of TSC's AEC-Q101-qualified transient protection portfolio, engineered specifically for harsh-environment surge immunity in automotive infotainment, ADAS, and powertrain subsystems.
FAQ
What is the clamping voltage of SMCJ5.0AH at its rated peak pulse current?
The SMCJ5.0AH has a maximum clamping voltage (VC) of 9.2 V when subjected to its rated 1000 A peak impulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see no more than 9.2 V during worst-case surge events. The SMCJ5.0AH maintains this performance across its full operating temperature range of –55 °C to +150 °C.
Is SMCJ5.0AH suitable for bidirectional transient protection?
No, the SMCJ5.0AH is a unidirectional TVS diode intended for DC circuits with defined polarity. Its cathode band marking indicates the clamping terminal, and it conducts only when the cathode is positively biased relative to the anode. For bidirectional protection, select the SMCJ5.0CAH variant, which uses a center-tapped configuration and meets identical electrical specs in both directions.
Does SMCJ5.0AH require special handling due to moisture sensitivity?
No, the SMCJ5.0AH is rated at Moisture Sensitivity Level 1 per J-STD-020, meaning it can be stored indefinitely at ambient conditions and placed directly into reflow without baking or dry-pack requirements. This simplifies SMT assembly and eliminates moisture-related popcorning risks during lead-free reflow profiles.
How does SMCJ5.0AH differ from SMCJ5.0H in terms of electrical performance?
The SMCJ5.0AH offers tighter VBR tolerance (6.4–7.0 V vs. 6.4–7.3 V for SMCJ5.0H) and lower clamping voltage (9.2 V vs. 9.6 V at 1000 A), resulting in improved protection margin for sensitive 5 V logic. Both share identical package, power rating, and AEC-Q101 qualification-but the "A" suffix denotes enhanced parameter consistency for high-reliability designs.
Can SMCJ5.0AH be used in place of SMAJ5.0A in existing designs?
Physically, yes-the SMCJ5.0AH fits the same footprint as SMAJ5.0A when adapted to DO-214AB land patterns-but electrically it delivers 3.75× higher surge capacity (1500 W vs. 400 W) and requires updated layout clearance due to larger SMC package dimensions. Replacing SMAJ5.0A with SMCJ5.0AH improves robustness but mandates verification of thermal dissipation and board space.
SMCJ5.0AH 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:
- 1
- Bidirectional Channels:
- -
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ5.0AH FAQ
1.How can I place an order for SMCJ5.0AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ5.0AH 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 SMCJ5.0AH reliable?
The price and inventory of SMCJ5.0AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ5.0AH is usually 5 days.
3.What payment methods are accepted for SMCJ5.0AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ5.0AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ5.0AH?
SMCJ5.0AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ5.0AH 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 SMCJ5.0AH?
For technical support, including SMCJ5.0AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ5.0AH requirements.
6.How does Aetrix verify that SMCJ5.0AH is sourced from the original manufacturer or authorized distributors?
All SMCJ5.0AH 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 SMCJ5.0AH meets industry standards.
7.What is the process for return or replacement of SMCJ5.0AH?
All SMCJ5.0AH units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ5.0AH, 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 SMCJ5.0AH part is unused and in its original packaging.
Return procedure for SMCJ5.0AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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