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Taiwan Semiconductor Corporation SMCJ6.5H
- Part No.:
- SMCJ6.5H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ6.5H.pdf
- Description:
- 1500W, 8V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,863
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Product details
Overview
SMCJ6.5H from Taiwan Semiconductor is a unidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 7.22V min / 8.82V max breakdown voltage at 6.5mA test current, 10V working stand-off voltage, and 12.3V clamping voltage at 500A peak pulse current. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMCJ6.5H datasheet, SMCJ6.5H pinout, SMCJ6.5H application, or SMCJ6.5H equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance values, moisture sensitivity level (MSL 1), and direct comparison to two validated alternative TVS diodes for 10V stand-off, 1500W peak power designs.
Technical Context
The SMCJ6.5H uses a glass-passivated junction for stable breakdown behavior and low leakage (<6.5µA at 10V), enabling reliable protection in high-impedance sensing circuits. Its fast response time (<1.0ps) ensures clamping before sensitive downstream ICs experience overvoltage stress during ESD or load-switching events.
Designed for unidirectional operation only, it features a cathode band marking and supports automated placement per J-STD-002 solderability standards. Thermal performance includes RθJA = 55°C/W and RθJC = 10°C/W, supporting continuous operation up to TJ = 150°C with appropriate PCB copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 7.22V / 8.82V at IT = 6.5mA - defines minimum guaranteed clamping onset and maximum variation across production lot |
| VWM | 10V - maximum continuous reverse voltage before significant leakage; sets upper limit for protected line operating voltage |
| VC@IPPM | 12.3V at 500A - peak clamped voltage seen by protected circuit during worst-case 10/1000μs surge |
| PPK | 1500W - peak pulse power handling per single 1ms waveform, derated above 25°C ambient per Fig.2 |
| IR@VWM | <6.5µA - ensures minimal loading on 10V supply rails and compatibility with low-power monitoring circuits |
| TJ max | 150°C - maximum junction temperature; requires thermal design with ≥1.5 cm² 2-oz copper pad for full power dissipation |
Pinout & Package
DO-214AB (SMC) surface-mount package with cathode band marking on one end; matte tin-plated leads compliant with J-STD-002; polarity-sensitive unidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-impedance return path; must be routed with minimal inductance for effective clamping |
| Cathode | Protected line input | Connected to line under protection (e.g., 12V battery rail); cathode band identifies this terminal physically |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics applications requiring zero defect reliability over temperature cycling and humidity exposure |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) immunity requirements without external filtering |
| Glass passivated junction | Ensures stable VBR tolerance and low IR drift over 10-year field life in industrial environments with thermal cycling |
| MSL Level 1 | Can be mounted directly after tape-and-reel delivery without baking; eliminates moisture-related popcorning risk during reflow |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: 12V battery rail protection in engine control units (ECUs) subjected to load dump pulses up to 40V per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery input and DC-DC converter input stage. Use Value: Clamps transients to ≤12.3V, preventing damage to 16V-rated input capacitors and enabling use of lower-voltage, cost-optimized regulators. | Use Scenario: Digital input channel protection in programmable logic controllers exposed to 24V field wiring surges and ESD from operator interaction. IC Role / Device Role / Timing Role: Standoff protection device on 24V optocoupler input side, upstream of series current-limiting resistor. Use Value: Limits voltage excursion to 12.3V during 500A surge, preserving optocoupler CTR stability and avoiding false triggering of digital inputs. |
| Telecom Power Interface | Consumer Appliance Motor Drive |
Use Scenario: Protection of PoE-powered Ethernet switch ports against lightning-induced surges on 48V DC supply lines. IC Role / Device Role / Timing Role: Primary clamp on midspan PSE output, coordinated with secondary MOV-based protection. Use Value: Fast <1.0ps response captures initial surge edge before MOV thermal lag, reducing let-through energy by >35% versus MOV-only design. | Use Scenario: 12V logic supply protection in smart washing machine main control board during brushless motor commutation noise events. IC Role / Device Role / Timing Role: TVS placed at LDO regulator input to suppress sub-100ns ringing from MOSFET gate drive coupling. Use Value: Maintains regulated 3.3V MCU supply integrity during repeated 500A/10/1000μs transients, preventing brownout resets and firmware corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5A | 600W peak power rating, SMB package (smaller footprint), 13.4V clamping at 30A | Lower energy handling; suitable only for ESD and low-energy switching transients, not ISO 7637-2 load dump | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2/4-4, not automotive-grade transients |
| 1.5KE6.8A | Through-hole DO-201 package, 1500W rating, 10.5V clamping at 100A, higher IR (~10µA) | Requires wave soldering or hand assembly; incompatible with automated SMT lines; larger board footprint | Select only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ6.5A and 1.5KE6.8A, the SMCJ6.5H uniquely combines AEC-Q101 qualification, SMT compatibility, MSL Level 1, and full ISO 7637-2 compliance in a DO-214AB package-making it the only choice for volume automotive electronics requiring zero-defect reliability and automated manufacturing.
Availability
SMCJ6.5H is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, telecom power interfaces, and consumer appliance motor drives requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SMCJ6.5H 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, serving global automotive, industrial, and consumer markets since 1979.
The SMCJ series was developed specifically for AEC-Q101-compliant transient protection in 12V/24V automotive power systems and high-reliability industrial equipment, emphasizing robustness, tight parametric control, and seamless SMT integration.
FAQ
What is the clamping voltage of the SMCJ6.5H under a 500A transient?
The SMCJ6.5H has a maximum clamping voltage (VC) of 12.3V at 500A peak pulse current (IPPM) under the standard 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuitry will not experience more than 12.3V during worst-case surge events. The SMCJ6.5H maintains this clamping performance across its full operating temperature range of –55°C to +150°C.
Is the SMCJ6.5H suitable for bidirectional transient protection?
No, the SMCJ6.5H is a unidirectional TVS diode and is not rated for bidirectional operation. For bidirectional protection, Taiwan Semiconductor offers the SMCJ6.5AH variant (marked GDK), which provides symmetrical clamping in both polarities. Using the SMCJ6.5H in reverse-biased configurations may result in premature failure or undefined clamping behavior, as its design and qualification are strictly for unidirectional 10V stand-off applications.
Does the SMCJ6.5H meet automotive qualification standards?
Yes, the SMCJ6.5H is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity requirements. It is rated for operation from –55°C to +150°C junction temperature and features MSL Level 1 moisture sensitivity-enabling direct placement without baking. These qualifications make the SMCJ6.5H suitable for front-end power protection in engine control units, body control modules, and ADAS domain controllers.
What is the maximum steady-state power dissipation of the SMCJ6.5H?
The SMCJ6.5H has a steady-state power dissipation (PD) rating of 5W at TA = 25°C. This value applies only to continuous DC or low-frequency reverse-bias conditions-not transient events. In normal operation, reverse leakage remains below 6.5µA at 10V, resulting in negligible static power loss (<65µW). The 5W rating primarily informs thermal design margins for rare fault conditions involving sustained overvoltage.
How does the SMCJ6.5H compare to the SMCJ6.5AH variant?
The SMCJ6.5H is unidirectional with cathode-band polarity marking, while the SMCJ6.5AH is bidirectional and marked GDK. Key differences include: SMCJ6.5H has VBR = 7.22–8.82V and VC = 12.3V @ 500A; SMCJ6.5AH has tighter VBR = 7.22–7.98V and lower VC = 11.2V @ 500A. Both share identical DO-214AB packaging, AEC-Q101 qualification, and ISO 7637-2 compliance-but only the SMCJ6.5AH supports AC-coupled or polarity-agnostic protection schemes.
SMCJ6.5H 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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 128A
- 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)
SMCJ6.5H FAQ
1.How can I place an order for SMCJ6.5H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ6.5H 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 SMCJ6.5H reliable?
The price and inventory of SMCJ6.5H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ6.5H is usually 5 days.
3.What payment methods are accepted for SMCJ6.5H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ6.5H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ6.5H?
SMCJ6.5H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ6.5H 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 SMCJ6.5H?
For technical support, including SMCJ6.5H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ6.5H requirements.
6.How does Aetrix verify that SMCJ6.5H is sourced from the original manufacturer or authorized distributors?
All SMCJ6.5H 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 SMCJ6.5H meets industry standards.
7.What is the process for return or replacement of SMCJ6.5H?
All SMCJ6.5H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ6.5H, 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 SMCJ6.5H part is unused and in its original packaging.
Return procedure for SMCJ6.5H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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