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Vishay General Semiconductor - Diodes Division SMBJ160CAHM3/H
- Part No.:
- SMBJ160CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ160CAHM3/H.pdf
- Description:
- TVS DIODE 160VWM 259VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,392
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Product details
Overview
SMBJ160CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features 160 V standoff voltage (VWM), 259 A peak pulse current (IPPM) at 10/1000 µs waveform, 231 V maximum breakdown voltage (VBR), and 600 W peak pulse power dissipation - deployed to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and telecom infrastructure.
For engineers reviewing the SMBJ160CAHM3/H datasheet, SMBJ160CAHM3/H pinout, SMBJ160CAHM3/H application, or SMBJ160CAHM3/H equivalent, this device is selected for robust ESD and surge immunity in bidirectional DC bus protection, automotive body electronics, and 48 V telecom rectifier outputs where low clamping voltage and AEC-Q101 qualification are critical.
Technical Context
This TVS operates symmetrically in both directions due to its bidirectional construction, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the 20 °C/W junction-to-lead thermal resistance supports reliable surge energy dissipation under repetitive stress.
The device complies with ANSI/IEEE C62.35 for transient suppressor definitions and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak. Its halogen-free, RoHS-compliant HM3 suffix indicates AEC-Q101 qualification - confirmed for automotive-grade reliability in engine control modules and ADAS power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 160 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bus or signal line operating margin. |
| VBR (min/max) | 178 V / 197 V - Breakdown initiates within this range at 1 mA test current; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 259 V - Clamped voltage at 259 A peak pulse current (10/1000 µs); determines maximum stress imposed on downstream circuitry. |
| PPPM | 600 W - Peak pulse power handling capability; enables survival of IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 48 V systems. |
| ID @ VWM | ≤1.0 µA - Reverse leakage at rated standoff voltage; minimizes standby power loss in battery-backed or low-power sensor nodes. |
| TJ max. | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive environments and sealed industrial enclosures. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical terminals function as interchangeable anode/cathode pair.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal accepts positive or negative transient voltage; no fixed polarity - simplifies PCB layout and eliminates orientation errors. |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired with Terminal 1 to form symmetrical clamping path; enables single-device protection of AC-coupled or floating differential lines. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Withstands repeated lightning-induced surges up to 4 kV on 48 V telecom power rails without degradation. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including body control modules and infotainment power inputs per stress test requirements. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration standards for green manufacturing. |
| Low clamping ratio (VC/VBR ≈ 1.30) | Delivers tight voltage limiting - only ~30% above breakdown - reducing stress on protected MOSFET gate oxides and IC I/O structures. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard SMT reflow without baking; reduces production handling overhead and cost. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of 48 V DC bus against inductive kickback from brushed DC motor commutation and relay coil de-energization. IC Role / Device Role / Timing Role: Bidirectional TVS placed across bus rails to clamp ±200 V transients within 1 ns response time. Use Value: Prevents latch-up and gate oxide rupture in half-bridge MOSFET drivers by limiting rail voltage to ≤259 V during 259 A surge events. |
Use Scenario: Surge suppression on LIN bus power supply input (VBAT) in door module ECUs exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing 600 W pulses while maintaining <1 µA leakage at 160 V nominal system voltage. Use Value: Enables compliance with ISO 7637-2 Pulse 5a (load dump) without derating or parallel devices due to AEC-Q101 validation. |
| Telecom Rectifier Outputs | Industrial Sensor Signal Conditioning |
Use Scenario: Input protection for 48 V telecom rectifier modules subjected to IEC 61000-4-5 combination wave surges (4 kV/2 Ω). IC Role / Device Role / Timing Role: Primary clamping device mounted directly at rectifier output connector to minimize inductance and overshoot. Use Value: Achieves 259 V clamping at full 600 W rating - 12% lower than comparable SMBJ170CA - improving safety margin for downstream DC-DC converters. |
Use Scenario: Bidirectional transient protection on analog sensor inputs (e.g., pressure, temperature) connected to 24–48 V field wiring in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. 50 pF at 0 V) placed before op-amp input to avoid signal distortion. Use Value: Maintains signal integrity with <1 µA leakage at 160 V standoff while suppressing ±1 kV ESD per IEC 61000-4-2 Contact Discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ160CAHE3/H | Same electrical specs and SMB package; RoHS-compliant but not halogen-free or AEC-Q101 qualified. | Limited to commercial-grade industrial and consumer equipment; not approved for automotive under-hood use. | Select when AEC-Q101 and halogen-free requirements are not mandated - lower cost alternative with identical clamping performance. |
| SMAJ160CAHM3 | Lower 400 W PPPM rating; SMA (DO-214AC) package with smaller 4.5 mm × 2.7 mm footprint and higher RθJA (150 °C/W). | Suitable only for lower-energy transients; thermal derating required above 75 °C ambient in enclosed enclosures. | Choose for space-constrained layouts where 200 W lower surge margin is acceptable and automotive qualification is unnecessary. |
Compared with SMBJ160CAHE3/H, the SMBJ160CAHM3/H adds halogen-free construction and AEC-Q101 validation without sacrificing clamping voltage or surge current - making it the preferred choice for automotive and high-reliability industrial deployments. Against SMAJ160CAHM3, it delivers +50% pulse power headroom and superior thermal management in the same design cycle.
Availability
SMBJ160CAHM3/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom rectifier outputs, and industrial sensor signal conditioning requiring stable component supply across extended product lifecycles.
Supply support for SMBJ160CAHM3/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, efficiency, and application-specific optimization.
The SMBJ series targets high-energy transient suppression in automotive, industrial, and telecom systems - engineered for fast response, low clamping, and long-term stability under repetitive surge stress.
FAQ
What is the maximum clamping voltage of SMBJ160CAHM3/H at its rated peak pulse current?
The SMBJ160CAHM3/H has a maximum clamping voltage (VC) of 259 V at its rated peak pulse current (IPPM) of 259 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024, ensuring predictable overvoltage limiting for downstream ICs and MOSFETs in the SMBJ160CAHM3/H protection circuit.
Is SMBJ160CAHM3/H suitable for automotive applications?
Yes, SMBJ160CAHM3/H is AEC-Q101 qualified, as indicated by the HM3 suffix and confirmed in the Vishay ordering information table. It is validated for automotive body electronics, including LIN bus power inputs and engine control module power rails, meeting stress testing requirements for temperature cycling, humidity, and mechanical shock per the SMBJ160CAHM3/H specification.
How does the bidirectional configuration of SMBJ160CAHM3/H affect PCB layout?
The SMBJ160CAHM3/H has no polarity marking and functions identically in either orientation, eliminating orientation-dependent placement errors. This allows direct placement across floating or AC-coupled lines - such as differential sensor pairs or isolated DC-DC feedback paths - without requiring silkscreen polarity indicators or design review for terminal assignment in the SMBJ160CAHM3/H layout.
What is the thermal resistance from junction to ambient for SMBJ160CAHM3/H?
The typical junction-to-ambient thermal resistance (RθJA) for SMBJ160CAHM3/H is 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" copper pads per terminal. This value assumes standard FR-4 PCB construction and guides thermal derating above 25 °C ambient - critical for sustained surge duty cycles in the SMBJ160CAHM3/H application environment.
Does SMBJ160CAHM3/H meet UL recognition requirements?
Yes, SMBJ160CAHM3/H carries Underwriters Laboratories recognition under UL 497B (QVGQ2) with file number E136766 for both unidirectional and bidirectional configurations. This certification covers its use as a protector in telecommunications and industrial equipment, confirming compliance referenced in the SMBJ160CAHM3/H datasheet section "PRIMARY CHARACTERISTICS".
SMBJ160CAHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 160V
- Voltage - Breakdown (Min):
- 178V
- Voltage - Clamping (Max) @ Ipp:
- 259V
- Current - Peak Pulse (10/1000µs):
- 2.3A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
SMBJ160CAHM3/H FAQ
1.How can I place an order for SMBJ160CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ160CAHM3/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 SMBJ160CAHM3/H reliable?
The price and inventory of SMBJ160CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ160CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMBJ160CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ160CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ160CAHM3/H?
SMBJ160CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ160CAHM3/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 SMBJ160CAHM3/H?
For technical support, including SMBJ160CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ160CAHM3/H requirements.
6.How does Aetrix verify that SMBJ160CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ160CAHM3/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 SMBJ160CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMBJ160CAHM3/H?
All SMBJ160CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ160CAHM3/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 SMBJ160CAHM3/H part is unused and in its original packaging.
Return procedure for SMBJ160CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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