My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM6T150CAHM3/H
- Part No.:
- SM6T150CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T150CAHM3/H.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,225
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM6T150CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 150 V standoff voltage (VWM), 207 V maximum clamping voltage (VC) at 2.9 A IPPM (10/1000 μs), 600 W peak pulse power rating, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SM6T150CAHM3/H datasheet, SM6T150CAHM3/H pinout, SM6T150CAHM3/H application, or SM6T150CAHM3/H equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, SMB package thermal data, and automotive-grade reliability context - critical for ESD/surge protection design in sensor interfaces, power rails, and CAN/LIN bus nodes.
Technical Context
The SM6T150CAHM3/H operates as a symmetrical, bidirectional TVS diode with identical breakdown characteristics in both polarities, enabling robust protection against reverse- and forward-polarity transients without polarity dependency. Its glass-passivated junction ensures stable leakage (<1 μA at VWM) and low dynamic impedance under surge conditions.
Designed for surface-mount assembly on standard 0.2" × 0.2" copper pads, it delivers 600 W peak pulse power handling per 10/1000 μs waveform while maintaining low inductance and meeting MSL Level 1 (260 °C reflow). The HM3 suffix confirms halogen-free, RoHS-compliant construction with AEC-Q101 qualification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 128 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 143–158 V at 1 mA - Confirmed symmetric breakdown in both directions; ensures predictable turn-on during overvoltage events |
| VC (Clamping Voltage) | 207 V at 2.9 A (10/1000 μs) - Actual voltage seen by protected circuit during 600 W surge; enables safe IC/MOSFET stress limits |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability per standardized transient waveform; validated per Fig. 1 derating curve |
| TJ max. | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive environments |
| RθJA | 100 °C/W - Thermal resistance to ambient on recommended pad layout; informs board-level thermal design for repeated surges |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode / Anode (Bidirectional) | Non-polarized terminals | No marking; symmetrical conduction in both directions - eliminates orientation concerns during placement and simplifies PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) on 12 V/24 V systems without cascaded stages |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain, body control, and ADAS modules requiring zero-failure reliability over temperature and lifetime |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage overshoot during fast transients - critical for safeguarding 130 V-rated MOSFETs and 150 V capacitors |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow without popcorn effect or bond wire damage; compatible with standard SMT lines |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control units exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across sensor supply and ground pins to limit transients to <207 V. Use Value: Prevents sensor IC latch-up or permanent damage during ISO 7637-2 Pulse 1/2a/5a events; maintains signal integrity under harsh EMI. |
Use Scenario: Surge suppression on CAN_H/CAN_L differential pair in vehicle infotainment gateways subjected to ESD and battery disconnect transients. IC Role / Device Role / Timing Role: Symmetrical TVS pair (one per line) referenced to chassis ground, absorbing common-mode surges up to ±207 V. Use Value: Ensures CAN physical layer remains operational after 8 kV contact ESD (IEC 61000-4-2) and 1 kV ring wave (IEC 61000-4-12). |
| Power Supply Input Stage | Telecom DC Feeder Protection |
Use Scenario: Input rail protection for 24 V industrial PLC power supplies facing repetitive load dump pulses from solenoid drivers. IC Role / Device Role / Timing Role: Primary clamping device placed between input and bulk capacitor, shunting surge current away from upstream rectifiers and regulators. Use Value: Withstands ≥1000 surges at 2.9 A (10/1000 μs) without parameter shift; extends system MTBF in factory automation settings. |
Use Scenario: Overvoltage protection on -48 V DC telecom feeder lines entering remote radio units, exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional clamp referenced to -48 V rail and return, limiting differential and common-mode transients to safe levels. Use Value: Meets Telcordia GR-1089-CORE Level 3 requirements for AC/DC power interfaces; reduces need for secondary MOV-based staging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | Same VWM (128 V), VC = 243 V at 2.5 A; higher clamping voltage, lower PPPM (600 W same), non-AEC-Q101 | Lacks automotive qualification; suitable for commercial/industrial only; requires higher surge margin due to +36 V clamping delta | Select when AEC-Q101 is not required and board space allows larger SMBJ footprint (same outline but different internal die) |
| 1.5KE150CA | Through-hole TO-218 package; VWM = 128 V, VC = 243 V at 2.5 A; same power rating but higher thermal mass and inductance | Not suitable for high-frequency surge suppression or automated SMT lines; used where manual repair or high-reliability through-hole mounting is mandated | Choose only for legacy designs requiring through-hole compatibility or where reflow sensitivity precludes SMT solutions |
Compared with SMBJ150CA and 1.5KE150CA, the SM6T150CAHM3/H provides lower clamping voltage (207 V vs. 243 V), AEC-Q101 qualification, and optimized SMT manufacturability - making it the preferred choice for new automotive and high-density industrial designs demanding precise voltage limiting and zero rework risk.
Availability
SM6T150CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN networks, telecom DC feeders, and 24 V power supply input stages requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SM6T150CAHM3/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 was engineered specifically for high-energy transient suppression in automotive and industrial environments, combining AEC-Q101 compliance, low-clamp architecture, and robust SMB packaging for automated manufacturing.
FAQ
What does the "CA" suffix indicate in SM6T150CAHM3/H?
The "CA" suffix in SM6T150CAHM3/H denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage suppression in both forward and reverse directions. This eliminates polarity sensitivity during PCB placement and enables protection of AC-coupled or differential signal lines without external circuitry. Unlike unidirectional variants (e.g., SM6T150AHM3/H), the CA version has no cathode marking and exhibits matched VBR and VC characteristics across both polarities.
Is SM6T150CAHM3/H qualified for automotive applications?
Yes, SM6T150CAHM3/H is AEC-Q101 qualified, as confirmed by the "HM3" suffix and Vishay documentation (Document Number 88385, Revision 09-Jan-2024). It meets stress test requirements for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life - making it suitable for under-hood, body electronics, and ADAS subsystems where reliability under thermal and vibration stress is mandatory.
What is the maximum clamping voltage of SM6T150CAHM3/H under a 10/1000 μs surge?
The maximum clamping voltage (VC) of SM6T150CAHM3/H is 207 V when subjected to a 10/1000 μs waveform at an IPPM of 2.9 A, as specified in Vishay's SM6T Series datasheet (page 2, Electrical Characteristics table). This value represents the peak voltage seen by downstream components during worst-case surge events and is measured with the device mounted on 0.2" × 0.2" copper pads per JEDEC standards.
How does the SMB (DO-214AA) package of SM6T150CAHM3/H compare thermally to larger packages like SMA or SMC?
The SMB package of SM6T150CAHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W on recommended pad layout, which is higher than SMA (≈70 °C/W) or SMC (≈40 °C/W). This means it dissipates less average power continuously but remains effective for short-duration, high-peak surges (e.g., 600 W for <1 ms). For repetitive surge applications, derating per Figure 2 in the datasheet is required to maintain TJ ≤ 150 °C.
Can SM6T150CAHM3/H be used in place of a unidirectional TVS like SM6T150AHM3/H?
No - SM6T150CAHM3/H is bidirectional and cannot replace a unidirectional TVS such as SM6T150AHM3/H in DC-biased circuits where reverse conduction must be blocked. Using SM6T150CAHM3/H in a unidirectional application may cause unintended leakage or shorting during normal operation. Always match device polarity to circuit topology: CA for AC/differential lines, A for DC rails with defined polarity.
SM6T150CAHM3/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:
- Discontinued at Digi-Key
- 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/H FAQ
1.How can I place an order for SM6T150CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T150CAHM3/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/H reliable?
The price and inventory of SM6T150CAHM3/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/H is usually 5 days.
3.What payment methods are accepted for SM6T150CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T150CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T150CAHM3/H?
SM6T150CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T150CAHM3/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/H?
For technical support, including SM6T150CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T150CAHM3/H requirements.
6.How does Aetrix verify that SM6T150CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SM6T150CAHM3/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/H meets industry standards.
7.What is the process for return or replacement of SM6T150CAHM3/H?
All SM6T150CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T150CAHM3/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/H part is unused and in its original packaging.
Return procedure for SM6T150CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T150CAHM3/H 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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
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 …
