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Vishay General Semiconductor - Diodes Division SM6T150CAHM3_A/H
- Part No.:
- SM6T150CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T150CAHM3_A/H.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,345
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Product details
Overview
SM6T150CAHM3_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 maximum clamping voltage (VC) at 2.9 A IPPM, and 600 W peak pulse power with 10/1000 μs waveform. It provides robust ESD and surge protection for automotive sensor signal lines and power rails.
For engineers reviewing the SM6T150CAHM3_A/H datasheet, SM6T150CAHM3_A/H pinout, SM6T150CAHM3_A/H application, or SM6T150CAHM3_A/H equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, halogen-free RoHS compliance, low clamping ratio (1.38), and SMB thermal performance under repetitive surge conditions.
Technical Context
This bidirectional TVS operates symmetrically across both polarities with identical breakdown (VBR min/max = 143 V / 158 V at 1 mA), clamping (VC = 207 V @ 2.9 A, 10/1000 μs), and leakage (ID ≤ 1 μA @ 128 V) characteristics in either direction. Its glass-passivated junction and low-inductance SMB package enable fast response to transients induced by inductive switching or ESD events.
The device is qualified to AEC-Q101, features MSL Level 1 moisture sensitivity, and supports reflow soldering up to 260 °C peak. Thermal resistance is RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), enabling reliable operation up to TJ = +150 °C in automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 128 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 143 V / 158 V at 1 mA - Confirmed bidirectional breakdown threshold with tight tolerance (±5.3%) |
| VC @ IPPM | 207 V at 2.9 A (10/1000 μs) - Clamping voltage limiting downstream IC stress during surge events |
| PPPM | 600 W - Peak transient energy absorption capability per IEC 61000-4-5 waveform |
| ID @ VWM | ≤ 1 μA - Negligible leakage current preserving signal integrity in high-impedance circuits |
| TJ max. | +150 °C - Junction temperature rating supporting automotive under-hood deployment |
| Package | SMB (DO-214AA) - Surface-mount footprint with 5.59 mm × 4.06 mm body and 2.20 mm height |
Pinout & Package
SM6T150CAHM3_A/H uses an SMB (DO-214AA) surface-mount package with two terminals: anode and cathode. As a bidirectional device, it has no polarity marking; both terminals are functionally symmetric and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (positive half-cycle) | Accepts surge current during positive voltage excursions; connects to protected line |
| Cathode | Transient current entry point (negative half-cycle) | Accepts surge current during negative voltage excursions; connects to protected line |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets automotive environmental standards and JESD201 Class 2 whisker resistance |
| 600 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV) without degradation in SMB footprint |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on downstream MOSFETs or CAN transceivers during clamping |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free assembly without preconditioning or baking |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Lines |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine compartments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp absorbing ±100 V transients while maintaining signal fidelity below 128 V. Use Value: Prevents sensor IC latch-up or damage during 12 V system load dump events without adding series impedance. |
Use Scenario: Guarding differential CAN_H/CAN_L lines against ESD (IEC 61000-4-2 ±8 kV contact) and burst noise in factory automation gateways. IC Role / Device Role / Timing Role: Symmetrical transient suppression on both bus lines to preserve common-mode rejection and bit timing integrity. Use Value: Limits bus voltage excursion to ≤207 V during 4 kV EFT bursts, ensuring CAN controller remains operational. |
| Power Supply Input Protection | Telecom DC Feeds |
Use Scenario: Safeguarding 12–24 V DC-DC converter inputs in railway signaling systems subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge shunt element placed upstream of input filter capacitors and rectifiers. Use Value: Absorbs 600 W transient energy without thermal runaway, enabling compact PCB layout with no heatsink required. |
Use Scenario: Protecting -48 V telecom power feeds against accidental AC mains coupling and induced transients in remote radio units. IC Role / Device Role / Timing Role: Bidirectional clamp referenced to system ground, handling both positive and negative polarity surges. Use Value: Maintains feed stability during 10/1000 μs surges up to 207 V, preventing false shutdowns in PoE-powered baseband modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150CA | Same VWM (150 V), but lower PPPM (400 W); SMA package (larger RθJA = 140 °C/W) | Limited to lower-energy transients; less suitable for automotive load dump per ISO 7637-2 Pulse 5a | Select when cost sensitivity outweighs peak surge margin and board space allows larger SMA footprint |
| 1.5KE150CA | Higher PPPM (1500 W), axial DO-201 package; not SMT-compatible; higher inductance | Requires through-hole assembly; unsuitable for automated high-density PCBs or vibration-prone environments | Choose only for legacy designs where through-hole mounting and higher surge headroom are mandatory |
Compared with SMAJ150CA and 1.5KE150CA, SM6T150CAHM3_A/H delivers optimal balance of AEC-Q101 qualification, 600 W surge capacity, SMB mountability, and halogen-free compliance-making it the preferred choice for new automotive and industrial SMT designs requiring validated reliability and compact footprint.
Availability
SM6T150CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus interfaces, and telecom DC feed protection requiring stable component supply and long-term lifecycle support.
Supply support for SM6T150CAHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The SM6T Series is designed specifically for high-reliability transient suppression in automotive, industrial, and telecom systems-delivering consistent clamping performance, AEC-Q101 validation, and halogen-free compliance in standard SMB packaging.
FAQ
What is the clamping voltage of SM6T150CAHM3_A/H at its rated peak pulse current?
The SM6T150CAHM3_A/H has a maximum clamping voltage (VC) of 207 V when subjected to a 10/1000 μs waveform peak pulse current (IPPM) of 2.9 A. This value is measured per Figure 1 in Vishay document 88385 and defines the upper voltage limit imposed on protected circuitry during surge events. The SM6T150CAHM3_A/H maintains this clamping performance bidirectionally due to its symmetrical construction.
Is SM6T150CAHM3_A/H qualified for automotive applications?
Yes, SM6T150CAHM3_A/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's SM6T datasheet (Rev. 09-Jan-2024, Doc. #88385). This qualification covers stress tests including HTGB, HTRB, TCT, and mechanical shock, validating its suitability for automotive powertrain, chassis, and ADAS subsystems. The SM6T150CAHM3_A/H meets MSL Level 1 and supports lead-free reflow up to 260 °C.
What does the "CA" suffix indicate in SM6T150CAHM3_A/H?
The "CA" suffix in SM6T150CAHM3_A/H explicitly denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SM6T150AHM3_A/H), the SM6T150CAHM3_A/H has no polarity marking and functions identically regardless of terminal orientation in the circuit.
What is the maximum operating junction temperature for SM6T150CAHM3_A/H?
The SM6T150CAHM3_A/H has a maximum operating junction temperature (TJ max.) of +150 °C, as specified in the Absolute Maximum Ratings table of Vishay's SM6T datasheet. This rating enables use in under-hood automotive environments and high-ambient industrial settings. Derating curves (Figure 2) show that peak pulse power must be reduced above TA = 25 °C to maintain safe junction temperatures.
How does the SMB package of SM6T150CAHM3_A/H compare thermally to larger packages like SMA or DO-201?
The SMB (DO-214AA) package of SM6T150CAHM3_A/H offers RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), striking a balance between compact size and thermal performance. While SMA packages (e.g., SMAJ series) exhibit higher RθJA (~140 °C/W), and DO-201 (e.g., 1.5KE) shows lower RθJA (~60 °C/W), the SMB footprint of SM6T150CAHM3_A/H enables high-density SMT layouts without sacrificing surge robustness-critical for modern automotive ECUs.
SM6T150CAHM3_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 (SMB)
SM6T150CAHM3_A/H FAQ
1.How can I place an order for SM6T150CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T150CAHM3_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 SM6T150CAHM3_A/H reliable?
The price and inventory of SM6T150CAHM3_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 SM6T150CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T150CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T150CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T150CAHM3_A/H?
SM6T150CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T150CAHM3_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 SM6T150CAHM3_A/H?
For technical support, including SM6T150CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T150CAHM3_A/H requirements.
6.How does Aetrix verify that SM6T150CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T150CAHM3_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 SM6T150CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T150CAHM3_A/H?
All SM6T150CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T150CAHM3_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 SM6T150CAHM3_A/H part is unused and in its original packaging.
Return procedure for SM6T150CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T150CAHM3_A/H Tags
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