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Vishay General Semiconductor - Diodes Division SMBJ160CAHM3_A/H
- Part No.:
- SMBJ160CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ160CAHM3_A/H.pdf
- Description:
- TVS DIODE 160VWM 259VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,016
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Product details
Overview
SMBJ160CAHM3_A/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 a 160 V standoff voltage (VWM), 178–197 V breakdown range (VBR at 1 mA), 259 V maximum clamping voltage (VC) at 2.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and telecom line cards.
For engineers reviewing the SMBJ160CAHM3_A/H datasheet, SMBJ160CAHM3_A/H pinout, SMBJ160CAHM3_A/H application, or SMBJ160CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, halogen-free RoHS compliance (HM3 suffix), thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports fast transient response under repetitive 0.01% duty cycle conditions.
The device is rated for operation from −55 °C to +150 °C junction temperature and meets J-STD-020 MSL Level 1 moisture sensitivity with 260 °C reflow peak. Its 20 °C/W junction-to-lead thermal resistance enables effective heat dissipation into PCB copper when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 160 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 144–160 V DC bus or AC peak applications. |
| VBR (min/max) | 178 V / 197 V at 1 mA - Confirmed breakdown range ensures predictable turn-on across production lot; guarantees clamping initiates above system nominal voltage. |
| VC @ IPPM | 259 V at 2.3 A - Measured clamping voltage under 10/1000 µs surge; limits downstream component stress during lightning or EFT events. |
| PPPM | 600 W - Peak pulse power handling with standard 10/1000 µs waveform; validates robustness against IEC 61000-4-5 Level 3/4 surges. |
| IPPM | 2.3 A - Peak pulse current corresponding to VC; determines minimum trace width and fuse coordination for surge path design. |
| TJ max. | +150 °C - Maximum junction temperature rating; supports operation in enclosed industrial enclosures with limited airflow. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs derating above 25 °C ambient. |
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, compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common terminal in bidirectional operation | Connected to protected line (e.g., RS-485 A/B, DC input rail); forms symmetrical clamping path with cathode. |
| Cathode | Current exit point in forward bias; common terminal in bidirectional operation | Connected to same protected line as anode; enables identical clamping behavior for positive and negative transients. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals or floating DC rails without polarity concerns - eliminates need for dual unidirectional devices. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - suitable for under-hood and infotainment power rails. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for industrial and consumer electronics without compromising surge robustness or thermal performance. |
| 600 W peak pulse power (10/1000 µs) | Provides proven immunity against IEC 61000-4-5 combination wave surges up to 4 kV (open-circuit)/2 kA (short-circuit) when properly laid out. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without preconditioning or special handling - reduces manufacturing complexity and cost. |
Applications
| Industrial Power Input Protection | RS-485/422 Data Line Protection |
|---|---|
|
Use Scenario: Protecting 120–160 VDC industrial PLC power inputs from load-switching transients and capacitor discharge events. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed across input terminals to limit surge voltage to ≤259 V. Use Value: Prevents damage to upstream rectifiers and downstream DC-DC controllers by limiting transient overvoltage within safe SOA margins. |
Use Scenario: Safeguarding full-duplex RS-485 transceivers in factory automation networks exposed to ground potential differences and ESD. IC Role / Device Role / Timing Role: Differential-line TVS connected between A and B bus lines to suppress common-mode surges without affecting signal integrity. Use Value: Maintains data reliability under IEC 61000-4-4 EFT bursts (±2 kV) and IEC 61000-4-5 surges (±1 kV) while adding <1 pF capacitance. |
| Automotive Body Control Module (BCM) | Telecom Line Card Surge Protection |
|
Use Scenario: Protecting 12 V supply rails in BCMs from ISO 7637-2 pulse 1/2a/3a transients during battery disconnection or relay switching. IC Role / Device Role / Timing Role: Secondary-level TVS placed after primary fuse and LC filter to clamp residual spikes reaching microcontroller power domains. Use Value: AEC-Q101 qualification ensures long-term reliability under thermal cycling and vibration, reducing field failure risk in 15-year vehicle lifetimes. |
Use Scenario: Shielding Ethernet PHY and PoE controller inputs on telecom line cards from lightning-induced surges entering via copper pairs. IC Role / Device Role / Timing Role: Primary surge suppression device on tip/ring or pair inputs, coordinated with gas discharge tubes for multi-stage protection. Use Value: 600 W rating and 259 V clamping enable coordination with GDTs to meet GR-1089-CORE Level 3 (10/700 µs, 6 kV) requirements. |
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_A/H | Same electrical specs and SMB package, but RoHS-compliant commercial grade (E3) without halogen-free certification or AEC-Q101 qualification. | Lacks automotive qualification and halogen-free assurance; suitable only for non-automotive industrial or consumer use. | Select when AEC-Q101 and halogen-free compliance are not required, and cost optimization is prioritized. |
| SMAJ160CA | Lower 400 W peak pulse power rating, larger SMA (DO-214AC) package (4.5 mm × 2.7 mm), higher RθJA (140 °C/W). | Reduced surge handling and thermal performance; requires larger PCB area and more conservative derating. | Choose only if SMB footprint is unavailable and 400 W surge margin is sufficient for the application. |
Compared with SMBJ160CAHE3_A/H, the SMBJ160CAHM3_A/H adds halogen-free materials and AEC-Q101 validation without sacrificing electrical performance; versus SMAJ160CA, it delivers 50% higher surge power in a thermally superior package with tighter layout constraints.
Availability
SMBJ160CAHM3_A/H is available at Aetrix Electronics and suitable for industrial power input protection, RS-485 interface hardening, automotive body control modules, and telecom line card surge suppression requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification.
Supply support for SMBJ160CAHM3_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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting industrial automation, automotive electronics, and communications infrastructure where robust overvoltage protection is mission-critical.
FAQ
What does the "HM3" suffix indicate in SMBJ160CAHM3_A/H?
The HM3 suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. This means SMBJ160CAHM3_A/H meets automotive reliability standards and environmental regulations, unlike E3-suffix variants which lack AEC-Q101 validation and halogen-free certification. The "_A/H" indicates tape-and-reel packaging in 7" reels (H) with revision A.
Is SMBJ160CAHM3_A/H suitable for protecting 12 V automotive circuits?
No - SMBJ160CAHM3_A/H has a 160 V standoff voltage and is intended for higher-voltage systems such as 48 V mild-hybrid buses, 120–160 VDC industrial supplies, or telecom line cards. For 12 V automotive applications, lower-voltage variants like SMBJ13CAHM3_A/H (VWM = 13 V) are appropriate. Using SMBJ160CAHM3_A/H on 12 V rails would leave the circuit unprotected until transients exceed 160 V.
How does SMBJ160CAHM3_A/H differ from unidirectional SMBJ160A variants?
SMBJ160CAHM3_A/H is bidirectional and lacks polarity marking, enabling symmetrical clamping on AC or floating DC lines. Unidirectional SMBJ160AHM3_A/H has a cathode band, conducts only in reverse bias, and is used on grounded DC rails. Both share identical VWM, VBR, and PPPM, but their circuit integration and protection topology differ fundamentally.
What is the maximum clamping voltage of SMBJ160CAHM3_A/H under surge conditions?
The maximum clamping voltage (VC) of SMBJ160CAHM3_A/H is 259 V, measured at its peak pulse current (IPPM) of 2.3 A using the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events and must be verified against downstream component absolute maximum ratings.
Can SMBJ160CAHM3_A/H be used in parallel for higher surge current handling?
No - SMBJ160CAHM3_A/H is not characterized for parallel operation. Variations in VBR tolerance (±5.5%) and dynamic impedance cause uneven current sharing, risking thermal runaway in one device. For higher surge ratings, select a single higher-power TVS (e.g., 1.5KE160CA) or implement staged protection with GDTs and MOVs instead of paralleling SMBJ160CAHM3_A/H units.
SMBJ160CAHM3_A/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:
- Obsolete
- 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_A/H FAQ
1.How can I place an order for SMBJ160CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ160CAHM3_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 SMBJ160CAHM3_A/H reliable?
The price and inventory of SMBJ160CAHM3_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 SMBJ160CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ160CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ160CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ160CAHM3_A/H?
SMBJ160CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ160CAHM3_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 SMBJ160CAHM3_A/H?
For technical support, including SMBJ160CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ160CAHM3_A/H requirements.
6.How does Aetrix verify that SMBJ160CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ160CAHM3_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 SMBJ160CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ160CAHM3_A/H?
All SMBJ160CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ160CAHM3_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 SMBJ160CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMBJ160CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ160CAHM3_A/H Tags
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