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Vishay General Semiconductor - Diodes Division SM6T150CAHE3_A/H
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- Part No.:
- SM6T150CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T150CAHE3_A/H.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,816
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Product details
Overview
SM6T150CAHE3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 150 V standoff voltage (VWM), 207 V clamping voltage (VC) at 2.9 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs). It provides robust ESD and surge protection for automotive sensor signal lines, power rails, and I/O interfaces.
For engineers reviewing the SM6T150CAHE3_A/H datasheet, SM6T150CAHE3_A/H pinout, SM6T150CAHE3_A/H application, or SM6T150CAHE3_A/H equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, low clamping ratio (VC/VWM ≈ 1.38), TJ = –65 °C to +150 °C operating range, and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This TVS diode operates symmetrically in both directions due to its CA suffix, enabling protection against bipolar transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 μA at VWM), while the SMB package delivers low inductance and meets MSL Level 1 (260 °C reflow).
The device is designed for non-repetitive surge suppression per IEC 61000-4-5 (10/1000 μs waveform) and complies with AEC-Q101 for automotive under-hood and chassis applications. Thermal resistance (RθJA = 100 °C/W) and junction-to-lead (RθJL = 20 °C/W) support reliable operation under pulsed stress with minimal derating up to TA = 50 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 128 V - Maximum continuous reverse working voltage before clamping begins |
| VBR (min/max) | 143 V / 158 V - Breakdown occurs within this band at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 207 V at 2.9 A - Clamped voltage during 10/1000 μs surge; limits downstream voltage stress |
| PPPM | 600 W - Peak surge power handling capability under standardized waveform |
| TJ max. | +150 °C - Maximum junction temperature; enables use in high-ambient automotive environments |
| AEC-Q101 | Qualified - Validated for automotive reliability including temperature cycling, HTRB, and ESD |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Accepts positive or negative surge relative to cathode; symmetrical conduction path |
| Cathode | Transient current exit (bidirectional) | Completes clamping loop regardless of surge polarity; no band marking on CA devices |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) on properly routed PCB traces |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, ADAS, and body electronics per stress test requirements |
| Low clamping ratio (VC/VWM = 1.38) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio TVS devices |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without preconditioning or dry-pack requirements |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control modules exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector interface to shunt transients before reaching signal conditioning circuitry. Use Value: Prevents latch-up or permanent damage to precision op-amps and ADC inputs by limiting voltage to ≤207 V during 2.9 A surges. | Use Scenario: Guarding differential CAN_H/CAN_L lines in industrial gateways subject to EFT bursts and lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Symmetrical transient suppressor across bus pair, referenced to common-mode ground, absorbing common-mode energy. Use Value: Maintains CAN signal integrity by clamping common-mode spikes below ISO 11898-2 receiver tolerance thresholds without affecting differential signaling. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side DC input protection in USB-C PD adapters where 12–20 V rails must survive accidental 100 V transients from upstream switching events. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between VBUS and GND, activated only during overvoltage excursions beyond normal regulation window. Use Value: Eliminates need for series fusing or crowbar circuits by self-resetting after sub-millisecond clamping events. | Use Scenario: Front-end protection of Ethernet PHY or xDSL line drivers connected to outdoor telecom infrastructure vulnerable to induced lightning surges. IC Role / Device Role / Timing Role: First-stage clamp on line-side transformer secondary, coordinated with gas discharge tube (GDT) primary stage. Use Value: Provides fast-response secondary protection with <1 ns response time, reducing let-through voltage to downstream protection ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150CA | Same VWM (150 V), lower PPPM (400 W), SMA package (higher RθJA = 150 °C/W) | Limited to lower-energy transients; less suitable for automotive under-hood ambient | Select when cost or board space constraints outweigh peak power needs |
| 1.5KE150CA | Higher PPPM (1500 W), axial DO-201 package, slower response due to higher parasitic inductance | Requires through-hole mounting; incompatible with high-speed SMT production | Choose only for legacy through-hole designs requiring higher surge margin |
Compared with SMAJ150CA and 1.5KE150CA, SM6T150CAHE3_A/H delivers optimal balance of AEC-Q101 compliance, SMT manufacturability, and 600 W surge capacity in a compact SMB footprint-making it preferred for new automotive and industrial designs requiring validated reliability and automated assembly.
Availability
SM6T150CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN networks, consumer power adapters, and telecom line cards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SM6T150CAHE3_A/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The SM6T Series is engineered for high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where AEC-Q101 qualification, low clamping voltage, and consistent surge response are critical design requirements.
FAQ
What does the "CA" suffix indicate in SM6T150CAHE3_A/H?
The "CA" suffix in SM6T150CAHE3_A/H denotes a bidirectional configuration, meaning the device clamps voltage transients equally in both polarities. Unlike unidirectional variants (e.g., SM6T150A), it has no cathode band marking and functions as a symmetrical Zener-like suppressor-ideal for protecting AC-coupled or floating signal paths without polarity constraints.
Is SM6T150CAHE3_A/H qualified for automotive applications?
Yes, SM6T150CAHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation (Document Number: 88385). This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD, validating its use in automotive powertrain, body electronics, and ADAS subsystems.
What is the clamping voltage of SM6T150CAHE3_A/H at its rated peak pulse current?
The clamping voltage (VC) of SM6T150CAHE3_A/H is 207 V at 2.9 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 in the datasheet and defines the maximum voltage imposed on protected circuitry during a defined surge event.
How does the SMB package of SM6T150CAHE3_A/H compare to SMA in thermal performance?
SM6T150CAHE3_A/H in SMB (DO-214AA) offers RθJA = 100 °C/W on 0.2" × 0.2" copper pads, versus ~150 °C/W for SMA packages like SMAJ150CA. The lower thermal resistance enables better power dissipation during repeated surges and supports higher ambient temperature operation-critical for under-hood automotive placement.
Can SM6T150CAHE3_A/H replace SM6T150A in an existing design?
No-SM6T150CAHE3_A/H is bidirectional while SM6T150A is unidirectional; they differ in polarity marking, circuit behavior, and surge response symmetry. Substitution requires layout review: SM6T150CAHE3_A/H lacks cathode band and must be placed without orientation dependency, whereas SM6T150A requires correct anode/cathode alignment.
SM6T150CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 2.9A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T150CAHE3_A/H FAQ
1.How can I place an order for SM6T150CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T150CAHE3_A/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 SM6T150CAHE3_A/H reliable?
The price and inventory of SM6T150CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T150CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T150CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T150CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T150CAHE3_A/H?
SM6T150CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T150CAHE3_A/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 SM6T150CAHE3_A/H?
For technical support, including SM6T150CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T150CAHE3_A/H requirements.
6.How does Aetrix verify that SM6T150CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T150CAHE3_A/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 SM6T150CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T150CAHE3_A/H?
All SM6T150CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T150CAHE3_A/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 SM6T150CAHE3_A/H part is unused and in its original packaging.
Return procedure for SM6T150CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T150CAHE3_A/H Tags
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