My Inquiry
My Account
Taiwan Semiconductor Corporation SMBJ6.5CAH
- Part No.:
- SMBJ6.5CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.5CAH.pdf
- Description:
- 600W, 7.6V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,330
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ6.5CAH from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for automotive-grade ESD and surge protection. It features 600W peak pulse power rating, 6.5V working stand-off voltage, 7.22–7.98V breakdown voltage at 10mA, 11.2V maximum clamping voltage at 500A, and <1μA leakage current at rated VWM - deployed in automotive lighting control modules and CAN bus interface protection.
For engineers reviewing the SMBJ6.5CAH datasheet, SMBJ6.5CAH pinout, SMBJ6.5CAH application, or SMBJ6.5CAH equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, moisture sensitivity level 1, and DO-214AA thermal performance (RθJA = 55°C/W).
Technical Context
The SMBJ6.5CAH implements a glass-passivated silicon junction optimized for fast transient response (<1.0ps) and low clamping ratio (VC/VBR ≈ 1.4). Its bidirectional configuration enables symmetrical surge suppression without polarity dependency, supporting both positive and negative transients across the same terminals.
Thermally, it sustains 150°C junction temperature with RθJC = 10°C/W and RθJA = 55°C/W, enabling reliable operation under high ambient conditions when mounted on standard 1-oz copper PCBs. It meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before significant leakage begins; sets system-level overvoltage trip threshold. |
| VBR @ IT=10mA | 7.22–7.98 V - Breakdown occurs within this range; ensures predictable turn-on during transients while avoiding false triggering. |
| VC @ IPP=500A | 11.2 V - Clamped voltage under 10/1000µs surge; limits downstream IC stress to safe levels during automotive load dump events. |
| IPP (10/1000µs) | 500 A - Peak surge current handling capacity; supports robust immunity against ISO 7637-2 Pulse 5a (load dump). |
| PPK | 600 W - Non-repetitive peak pulse power; defines energy absorption capability per transient event. |
| ID @ VWM | <1 µA - Low blocking leakage ensures minimal standby power loss and signal integrity in high-impedance circuits. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments without derating. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, bi-directional, cathode band not applicable (symmetrical construction). Matte tin-plated leads, RoHS and halogen-free compliant, MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (Bidirectional) | Surge current path (reversible) | Either terminal accepts positive or negative transients; no polarity marking required; simplifies PCB layout and orientation. |
| Case / Body | Thermal conduction path | DO-214AA body transfers heat to PCB copper; requires minimum 25 mm² 1-oz copper pad for full 600W rating. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including temperature cycling, HTRB, and mechanical shock per AEC stress test plan. |
| ISO 7637-2 compliance | Passes Pulse 1 (inductive spike), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (switching noise) without degradation. |
| Fast response time | <1.0 ps junction response enables clamping before sensitive ICs experience overvoltage damage. |
| Moisture sensitivity level 1 | No bake preconditioning required before reflow; compatible with standard SMT assembly lines. |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green electronics manufacturing. |
Applications
| Automotive Lighting Control | CAN Bus Interface Protection |
|---|---|
Use Scenario: Protecting LED driver ICs and microcontrollers in headlamp/taillamp modules from load dump and inductive kickback. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power rail and ground, clamping transients before they reach voltage regulators and gate drivers. Use Value: Prevents latch-up or permanent damage during 12V/24V system load dump events (ISO 7637-2 Pulse 5a), maintaining functional safety compliance. |
Use Scenario: Safeguarding CAN transceivers (e.g., TJA1042, SN65HVD230) against ESD and coupled surges on differential bus lines. IC Role / Device Role / Timing Role: Placed line-to-line and line-to-ground on CAN_H/CAN_L, suppressing common-mode and differential-mode transients simultaneously. Use Value: Maintains CAN signal integrity up to ±30kV contact ESD (IEC 61000-4-2) and survives repetitive 10/1000µs surges per ISO 16750-2. |
| Industrial Sensor Signal Lines | Power Supply Input Stage |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) connected to microcontroller ADC inputs from board-level EFT bursts. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 1000pF @ 0V) placed directly at connector entry point, minimizing stub length. Use Value: Limits induced voltage to <11.2V during 40A EFT (IEC 61000-4-4), preserving 12-bit ADC accuracy and preventing input-stage saturation. |
Use Scenario: Front-end protection of DC-DC converters in 12V/24V industrial power supplies subjected to switching transients and lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge clamp between input bulk capacitor and upstream fuse, absorbing >95% of 600W transient energy. Use Value: Enables single-stage protection architecture without series impedance, reducing BOM count and PCB area versus RC+TVS solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5CA | Same electrical specs but not AEC-Q101 qualified; lacks automotive reliability testing and traceability documentation. | Restricted to commercial/industrial use; unsuitable for automotive OEM or Tier-1 designs requiring PPAP submission. | Select SMBJ6.5CA only for cost-sensitive non-automotive applications where AEC-Q101 is not mandated. |
| SMAJ6.5CA | Lower 400W PPK, higher VC = 12.6V @ 350A, DO-214AC (SMA) package with lower thermal mass and RθJA = 85°C/W. | Limited to lower-energy transients; requires larger copper area or forced cooling to match SMBJ6.5CAH's 600W capability. | Choose SMAJ6.5CA only when space constraints prohibit DO-214AA footprint and surge energy remains below 400W. |
Compared with SMBJ6.5CA and SMAJ6.5CA, the SMBJ6.5CAH delivers certified automotive reliability, superior thermal dissipation, and higher surge margin - making it the sole option for ISO 16750-2-compliant vehicle subsystems requiring zero field failure risk.
Availability
SMBJ6.5CAH is available at Aetrix Electronics and suitable for automotive lighting systems, CAN bus networks, industrial sensor interfaces, and 12V/24V power supply input stages requiring stable component supply and long-term lifecycle support.
Supply support for SMBJ6.5CAH 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs, with global distribution and AEC-Q101 certification capabilities.
The SMBJH series was developed specifically for automotive and industrial transient suppression, emphasizing high-energy clamping, fast response, and process-controlled reliability across temperature and humidity extremes.
FAQ
What does the 'CAH' suffix indicate in SMBJ6.5CAH?
The 'CAH' suffix denotes a bidirectional TVS diode ('C'), AEC-Q101 qualified ('A'), and high-reliability automotive grade ('H'). Unlike unidirectional variants (e.g., SMBJ6.5H), SMBJ6.5CAH provides symmetrical clamping for both polarities - critical for protecting differential buses like CAN or LIN without polarity concerns.
Is SMBJ6.5CAH suitable for ISO 16750-2 compliance testing?
Yes, SMBJ6.5CAH meets ISO 16750-2 requirements for electrical disturbances from conduction and coupling, including Pulse 5a (load dump) up to 35V/100ms and Pulse 4 (supply voltage drop) due to its 600W peak power rating, 11.2V clamping voltage, and validated AEC-Q101 stress performance across -40°C to +125°C ambient.
What is the maximum allowable PCB trace length between SMBJ6.5CAH and protected IC?
To maintain sub-nanosecond response, PCB trace inductance must be minimized: maximum recommended trace length is 5 mm per leg (anode and cathode) with direct connection to ground/power planes. Longer traces increase clamping voltage via L·di/dt, risking overshoot beyond the 11.2V spec of SMBJ6.5CAH.
Does SMBJ6.5CAH require derating at elevated ambient temperatures?
Yes - SMBJ6.5CAH must be derated above 25°C per Figure 2 in the datasheet: at 85°C ambient, its 600W peak pulse power drops to ~420W (70% of rating), and at 125°C, it falls to ~240W (40%). Proper thermal design (copper area, airflow) is essential to sustain full rating in under-hood applications.
Can SMBJ6.5CAH replace SMBJ6.5A in an existing design?
No - SMBJ6.5CAH is not a drop-in replacement for SMBJ6.5A. While both share the DO-214AA package, SMBJ6.5A is unidirectional with cathode marking and forward voltage specification (VF = 3.5V), whereas SMBJ6.5CAH is bidirectional with no polarity marking and no VF rating. Substitution requires schematic and layout review.
SMBJ6.5CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJH
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 56A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
SMBJ6.5CAH FAQ
1.How can I place an order for SMBJ6.5CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.5CAH 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 SMBJ6.5CAH reliable?
The price and inventory of SMBJ6.5CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ6.5CAH is usually 5 days.
3.What payment methods are accepted for SMBJ6.5CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.5CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.5CAH?
SMBJ6.5CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.5CAH 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 SMBJ6.5CAH?
For technical support, including SMBJ6.5CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.5CAH requirements.
6.How does Aetrix verify that SMBJ6.5CAH is sourced from the original manufacturer or authorized distributors?
All SMBJ6.5CAH 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 SMBJ6.5CAH meets industry standards.
7.What is the process for return or replacement of SMBJ6.5CAH?
All SMBJ6.5CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.5CAH, 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 SMBJ6.5CAH part is unused and in its original packaging.
Return procedure for SMBJ6.5CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ6.5CAH Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
