My Inquiry
My Account
Taiwan Semiconductor Corporation SMAJ6.0CAH
- Part No.:
- SMAJ6.0CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.0CAH.pdf
- Description:
- TVS DIODE 6VWM 10.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,473
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ6.0CAH from Taiwan Semiconductor is a bidirectional 400W transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for automotive-grade overvoltage protection in DC/DC converters and SMPS input rails. It features a 6.67–7.37 V breakdown voltage (VBR), 10 V working stand-off voltage (VWM), and clamps to ≤10.3 V at 800 A peak impulse current under 10/1000 µs waveform.
For engineers reviewing the SMAJ6.0CAH datasheet, SMAJ6.0CAH pinout, SMAJ6.0CAH application, or SMAJ6.0CAH equivalent, this device is selected for ISO 7637-2 Pulse 1/2a/2b/3a/3b-compliant automotive transients, AEC-Q101 qualification, and low-leakage (<6 µA @ VWM) operation in space-constrained surface-mount designs.
Technical Context
The SMAJ6.0CAH is a glass-passivated, single-die, bidirectional TVS diode optimized for fast clamping response (<1.0 ps rise time from 0 V to VBR min) and high-energy surge handling. Its junction operates from –55 °C to +150 °C and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity requirements.
It delivers 400 W peak pulse power (10/1000 µs) up to 78 V VWM; above that, rating drops to 300 W. Electrical characteristics apply identically in both directions due to symmetrical bipolar construction - no polarity marking required beyond cathode band omission per bidirectional configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse voltage before leakage exceeds 6 µA; sets safe operating margin for 9 V nominal rail protection. |
| VBR min/max | 6.67–7.37 V @ 10 mA - Confirmed breakdown range ensures reliable triggering during fast transients without premature conduction. |
| VC @ IPPM | ≤10.3 V @ 800 A - Clamping voltage limits downstream IC stress during ISO 7637-2 Pulse 1 (inductive load dump) events. |
| PPPM | 400 W (10/1000 µs) - Sustains automotive-level surge energy without thermal runaway in compact SMA footprint. |
| IR @ VWM | <6 µA - Enables low-power system monitoring circuits to remain functional during standby without false triggers. |
| TJ max | +150 °C - Supports under-hood placement in automotive ECUs and industrial power modules with minimal derating. |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded epoxy case rated UL 94V-0, matte tin-plated leads, 0.060 g weight, polarity indicated by cathode band (omitted for bidirectional SMAJ6.0CAH).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient conduction path | No polarity dependency - either terminal serves as anode or cathode depending on transient polarity; eliminates orientation errors during automated placement. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - enables direct use in Tier-1 ECU designs without requalification. |
| Glass passivated junction | Enhances long-term reliability under thermal cycling and humidity exposure - critical for under-hood and industrial environments. |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive switch-off), Pulse 2a/2b (load dump suppression), and Pulse 3a/3b (capacitive coupling) immunity thresholds. |
| Fast response time | <1.0 ps from 0 V to VBR min - reacts before sensitive logic or analog circuitry sustains damage from nanosecond-scale transients. |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive - supports green manufacturing and export compliance. |
Applications
| Automotive Body Control Module (BCM) | Industrial DC/DC Converter Input Stage |
|---|---|
Use Scenario: Protects microcontroller I/O and CAN transceiver power rails against load dump and jump-start surges in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional clamping element placed upstream of LDOs and PMICs to limit transient voltage excursions. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V logic ICs by clamping to ≤10.3 V during 100 V/50 ms load dump pulses. |
Use Scenario: Shields isolated flyback controller ICs and optocoupler feedback paths from reflected switching noise and line surges. IC Role / Device Role / Timing Role: Primary-side transient suppressor across bulk capacitor inputs in 24–48 V industrial DC/DC modules. Use Value: Maintains stable regulation by preventing input overvoltage shutdown during 400 W surge events with <1.0 ps response. |
| LED Driver Power Supply | USB-C PD Adapter Secondary Side |
Use Scenario: Safeguards constant-current LED driver ICs from inductive kickback when driving high-power automotive lighting arrays. IC Role / Device Role / Timing Role: Parallel-connected TVS across output terminals to absorb back-EMF from solenoid-driven headlamp actuators. Use Value: Eliminates need for snubber RC networks by clamping 100 V transients to ≤10.3 V within sub-nanosecond window. |
Use Scenario: Protects secondary-side synchronous rectifier MOSFETs and USB-C CC logic from ESD and AC-line coupled surges. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical) bidirectional clamp on 5–20 V output bus prior to USB-PD controller. Use Value: Enables robust 6000 V contact ESD immunity without signal integrity degradation due to minimal junction capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.0AHE3/5BT | Same VBR, VWM, and VC specs; identical DO-214AC package but Vishay-branded, with slightly higher IR limit (10 µA vs. 6 µA @ VWM). | Approved for Vishay-qualified automotive programs; may require revalidation if used in TSC-qualified BOMs. | Select when sourcing flexibility across dual-sourced AEC-Q101 TVS lines is needed; verify IR tolerance in ultra-low-power sleep modes. |
| P6SMB6.0CA | Lower PPPM (600 W vs. 400 W), same VWM/VC, but larger DO-214AA (SMB) package - 2.5× footprint area increase. | Used where board space permits and higher surge margin is prioritized over miniaturization. | Choose only if layout allows SMB footprint and design requires >400 W headroom; not drop-in due to mechanical incompatibility. |
Compared with SMAJ6.0CAH, SMAJ6.0AHE3/5BT offers identical electrical performance with alternate branding and sourcing, while P6SMB6.0CA trades compactness for higher surge capacity in a non-compatible package - making SMAJ6.0CAH optimal for space-constrained AEC-Q101 designs requiring precise 10 V standoff and ≤10.3 V clamping.
Availability
SMAJ6.0CAH is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC/DC converters, and LED driver power supplies requiring stable component supply with full AEC-Q101 traceability and ISO 7637-2 compliance.
Supply support for SMAJ6.0CAH 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, and rectifiers with global automotive and industrial certifications.
The SMAJ series was developed specifically for AEC-Q101-compliant transient protection in harsh-environment automotive and industrial power systems - emphasizing fast response, high surge robustness, and surface-mount manufacturability.
FAQ
What does the "CAH" suffix indicate in SMAJ6.0CAH?
The "CAH" suffix denotes a bidirectional configuration with symmetrical clamping behavior in both polarities. Unlike unidirectional "H" variants, SMAJ6.0CAH has no cathode marking and provides identical VBR, VC, and IPPM performance regardless of voltage polarity - essential for protecting AC-coupled or floating-rail circuits where transient direction is unpredictable.
Is SMAJ6.0CAH suitable for protecting a 5 V USB interface?
No - SMAJ6.0CAH is not recommended for 5 V USB interfaces because its 10 V working stand-off voltage (VWM) exceeds typical 5 V rail tolerances, risking unintended conduction during normal operation. For 5 V data lines, lower VWM TVS devices such as SMAJ5.0CAH (VWM = 10 V still marginal) or dedicated low-capacitance ESD arrays like SP1001-02JT are more appropriate.
Does SMAJ6.0CAH meet ISO 7637-2 Pulse 1 requirements?
Yes - SMAJ6.0CAH is explicitly rated to meet ISO 7637-2 Pulse 1 (inductive load dump) with its 400 W peak pulse power capability and ≤10.3 V clamping voltage at 800 A. This ensures protected circuits experience less than 12 V stress during the standardized 100 V/50 ms transient, satisfying automotive OEM immunity specifications.
What is the maximum junction temperature rating for SMAJ6.0CAH?
The maximum junction temperature (TJ max) for SMAJ6.0CAH is +150 °C, as confirmed in the Absolute Maximum Ratings table. This allows reliable operation in under-hood automotive environments and industrial enclosures without thermal derating below ambient temperatures up to +125 °C, provided PCB copper area and airflow meet TSC's thermal guidelines for DO-214AC packages.
How does SMAJ6.0CAH differ from SMAJ6.0AH?
SMAJ6.0CAH is bidirectional, while SMAJ6.0AH is unidirectional. SMAJ6.0CAH clamps symmetrically in both directions with no polarity marking; SMAJ6.0AH has a cathode band and only clamps in reverse bias. Their VBR (6.67–7.37 V), VWM (10 V), and VC (10.3 V) are identical, but SMAJ6.0AH cannot protect AC signals or floating nodes - making SMAJ6.0CAH mandatory for bidirectional surge scenarios.
SMAJ6.0CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AC, SMA
- Series:
- SMAJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6V
- Voltage - Breakdown (Min):
- 6.67V
- Voltage - Clamping (Max) @ Ipp:
- 10.3V
- Current - Peak Pulse (10/1000µs):
- 38.8A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
SMAJ6.0CAH FAQ
1.How can I place an order for SMAJ6.0CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.0CAH 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 SMAJ6.0CAH reliable?
The price and inventory of SMAJ6.0CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ6.0CAH is usually 5 days.
3.What payment methods are accepted for SMAJ6.0CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.0CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.0CAH?
SMAJ6.0CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.0CAH 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 SMAJ6.0CAH?
For technical support, including SMAJ6.0CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.0CAH requirements.
6.How does Aetrix verify that SMAJ6.0CAH is sourced from the original manufacturer or authorized distributors?
All SMAJ6.0CAH 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 SMAJ6.0CAH meets industry standards.
7.What is the process for return or replacement of SMAJ6.0CAH?
All SMAJ6.0CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.0CAH, 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 SMAJ6.0CAH part is unused and in its original packaging.
Return procedure for SMAJ6.0CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ6.0CAH 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…
