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Vishay General Semiconductor - Diodes Division SMAJ6.0CAHM3/H
- Part No.:
- SMAJ6.0CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.0CAHM3/H.pdf
- Description:
- TVS DIODE 6VWM 10.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,988
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Product details
Overview
SMAJ6.0CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features 6.0 V stand-off voltage (VWM), 6.67–7.37 V breakdown voltage (VBR) at 10 mA test current, 400 W peak pulse power (10/1000 μs), and clamps to ≤10.3 V at 38.8 A peak surge current - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line conditioning.
For engineers reviewing the SMAJ6.0CAHM3/H datasheet, SMAJ6.0CAHM3/H pinout, SMAJ6.0CAHM3/H application, or SMAJ6.0CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, halogen-free RoHS compliance (HM3 suffix), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamping protector using an avalanche junction structure, responding in <1 ps to transient overvoltages. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity-dependent layout constraints in AC-coupled or differential signal paths.
Thermal performance is defined by RθJA = 120 °C/W and RθJL = 30 °C/W, with maximum junction temperature rated at +150 °C. The 400 W peak pulse rating applies up to 78 V VWM; above that, derating to 300 W per specification note (1).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.0 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe signal swing margin in protected circuits. |
| VBR min/max | 6.67 V / 7.37 V at 10 mA - Confirmed breakdown range ensuring reliable turn-on under ESD or surge conditions without premature conduction. |
| VC @ IPPM | ≤10.3 V at 38.8 A - Clamped voltage during 10/1000 μs surge; determines maximum stress imposed on downstream ICs like microcontrollers or transceivers. |
| PPPM | 400 W (10/1000 μs) - Peak transient energy absorption capacity; sufficient for ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges. |
| ID @ VWM | ≤800 μA - Reverse leakage at stand-off voltage; low enough to avoid signal integrity degradation in high-impedance sensor or communication lines. |
| TJ max. | +150 °C - Maximum junction temperature enabling use in under-hood automotive environments and industrial enclosures without forced cooling. |
| Package | SMA (DO-214AC) - Standardized 2-pin surface-mount outline with 5.28 mm length, 4.50 mm width, and 2.29 mm height; compatible with JEDEC MS-013AC footprint. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, MSL Level 1 compliant (peak reflow 260 °C), UL 94 V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; cathode-defined polarity reference for unidirectional variants | Not marked on bidirectional SMAJ6.0CAHM3/H; terminals are symmetrical - either lead may serve as input or return path in AC applications. |
| Cathode | Current exit terminal in forward bias; band-marked end in unidirectional types | No marking on SMAJ6.0CAHM3/H; functionally identical to Anode due to bidirectional construction - enables placement without orientation check during automated assembly. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - supports deployment in ADAS camera modules and body control units. |
| Halogen-free & RoHS-compliant (HM3) | Meets JESD201 Class 2 whisker resistance and global environmental regulations - required for Tier-1 automotive supply chain compliance. |
| 400 W peak pulse power (10/1000 μs) | Withstands repetitive transients up to 0.01% duty cycle - protects CAN/LIN bus nodes and USB-C power delivery circuits against load dump and inductive switching events. |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes voltage overshoot during surge events - preserves timing margins in high-speed interfaces such as RS-485 and Ethernet PHYs. |
| Fast response time (<1 ps) | Activates before most semiconductor junctions fail - critical for safeguarding sensitive gate oxides in MOSFET drivers and logic-level shifters. |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between sensor output and microcontroller ADC input, shunting transients before they reach precision front-end circuitry. Use Value: Maintains signal fidelity below 10.3 V clamp level while surviving 400 W surges - eliminates need for additional RC filtering or op-amp buffering stages. |
Use Scenario: Shielding 24 V digital input cards in PLCs from field-wiring induced surges during relay coil de-energization. IC Role / Device Role / Timing Role: Standoff voltage (6.0 V) allows clean detection of logic-low states while clamping fast-rising spikes from inductive loads. Use Value: Enables direct connection to dry-contact inputs without external Zener or resistor networks - reduces BOM count and PCB area by >30%. |
| Telecom Line Conditioning | USB Power Delivery Port Protection |
Use Scenario: Guarding RS-485 transceiver pins in base station backhaul equipment subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Paired bidirectionally across differential pair (A-B) and to ground, providing symmetric common-mode suppression. Use Value: Matches impedance profile of twisted-pair cabling and maintains signal integrity up to 10 Mbps - avoids jitter accumulation seen with higher-capacitance TVS devices. |
Use Scenario: Safeguarding VBUS and CC lines in USB-C receptacles against hot-plug ESD and accidental 20 V adapter misconnection. IC Role / Device Role / Timing Role: Low-leakage (≤800 μA) bidirectional suppressor placed upstream of USB PD controller, preventing false fault triggering during normal operation. Use Value: Survives ±15 kV contact ESD (IEC 61000-4-2) without parameter shift - extends field life of portable medical and industrial charging docks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.0CAHE3/H | RoHS-compliant but not halogen-free; lacks JESD201 Class 2 whisker resistance certification | Approved for commercial and industrial use, but excluded from automotive Tier-1 procurement due to halogen content | Select when cost sensitivity outweighs automotive qualification requirements and halogen-free mandate is absent. |
| SMAJ6.0CAHM3/5A | Identical electrical specs and qualification; differs only in packaging - 7500-unit 13" tape-and-reel vs. 1800-unit 7" reel (HM3/H) | No functional or design impact; choice driven solely by production volume and SMT feeder compatibility | Choose HM3/5A for high-volume automated assembly lines requiring extended reel runtime and reduced changeover frequency. |
Compared with SMAJ6.0CAHE3/H, the SMAJ6.0CAHM3/H adds halogen-free compliance and whisker resistance for automotive use; compared with SMAJ6.0CAHM3/5A, it offers smaller reel size for prototyping and low-volume builds without sacrificing performance or qualification.
Availability
SMAJ6.0CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O hardening, and telecom line conditioning requiring stable component supply across multi-year production cycles.
Supply support for SMAJ6.0CAHM3/H 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMAJ series was engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure modes must be mitigated without compromising signal integrity or thermal performance.
FAQ
What does the 'HM3' suffix indicate in SMAJ6.0CAHM3/H?
The 'HM3' suffix in SMAJ6.0CAHM3/H denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance certification. It confirms compliance with automotive environmental standards and enables use in AEC-Q101-qualified designs. Unlike E3-suffixed variants, SMAJ6.0CAHM3/H contains no brominated flame retardants and meets strict Tier-1 supply chain requirements for green manufacturing.
Is SMAJ6.0CAHM3/H suitable for protecting USB-C VBUS lines?
Yes, SMAJ6.0CAHM3/H is suitable for USB-C VBUS line protection due to its 6.0 V stand-off voltage, bidirectional clamping, and low leakage (<800 μA), which prevents interference with USB PD negotiation. Its 10.3 V clamping voltage at 38.8 A surge current provides margin below the 20 V absolute maximum rating of most USB-C controllers, and its AEC-Q101 qualification ensures long-term reliability in portable charging applications.
How does SMAJ6.0CAHM3/H differ from unidirectional SMAJ6.0A variants?
SMAJ6.0CAHM3/H is bidirectional, meaning it clamps equally in both polarities with no cathode marking, whereas unidirectional SMAJ6.0A has a banded cathode and conducts only in reverse bias. This makes SMAJ6.0CAHM3/H ideal for AC-coupled signals, differential buses, or applications where polarity cannot be guaranteed - unlike SMAJ6.0A, which would short-circuit if installed backward in such configurations.
What is the maximum allowable PCB pad size for optimal thermal performance of SMAJ6.0CAHM3/H?
For optimal thermal performance, SMAJ6.0CAHM3/H should be mounted on minimum recommended copper pads: 0.2" × 0.2" (5.0 mm × 5.0 mm) per terminal, as specified in the Vishay datasheet. Larger pads improve heat dissipation and sustain the full 400 W peak pulse rating; smaller pads cause thermal derating and reduce surge survivability - especially critical in automotive under-hood deployments where ambient temperatures exceed 85 °C.
Does SMAJ6.0CAHM3/H require orientation during pick-and-place assembly?
No, SMAJ6.0CAHM3/H does not require orientation during pick-and-place assembly because it is a bidirectional device with symmetrical terminals and no polarity marking. This eliminates vision-based orientation verification steps, increases SMT throughput, and reduces placement error rates - a key advantage over unidirectional variants like SMAJ6.0A, which require cathode-band alignment.
SMAJ6.0CAHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ6.0CAHM3/H FAQ
1.How can I place an order for SMAJ6.0CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.0CAHM3/H 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 SMAJ6.0CAHM3/H reliable?
The price and inventory of SMAJ6.0CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ6.0CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMAJ6.0CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.0CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.0CAHM3/H?
SMAJ6.0CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.0CAHM3/H 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 SMAJ6.0CAHM3/H?
For technical support, including SMAJ6.0CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.0CAHM3/H requirements.
6.How does Aetrix verify that SMAJ6.0CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMAJ6.0CAHM3/H 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 SMAJ6.0CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMAJ6.0CAHM3/H?
All SMAJ6.0CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.0CAHM3/H, 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 SMAJ6.0CAHM3/H part is unused and in its original packaging.
Return procedure for SMAJ6.0CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ6.0CAHM3/H Tags
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