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Vishay General Semiconductor - Diodes Division SMBJ160AHM3_B/H
- Part No.:
- SMBJ160AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ160AHM3_B/H.pdf
- Description:
- 600W,160V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,831
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Product details
Overview
SMBJ160AHM3_B/H from Vishay General Semiconductor is a unidirectional 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 stand-off voltage (VWM), 178–197 V breakdown voltage (VBR) at 1 mA, 259 V maximum clamping voltage (VC) at 2.3 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform). It protects MOSFETs, ICs, and sensor interfaces in industrial power supplies and telecom infrastructure.
For engineers reviewing the SMBJ160AHM3_B/H datasheet, SMBJ160AHM3_B/H pinout, SMBJ160AHM3_B/H application, or SMBJ160AHM3_B/H equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, halogen-free RoHS-compliant construction (HM3 suffix), AEC-Q101 qualification eligibility, and thermal resistance of 100 °C/W (junction-to-ambient).
Technical Context
This TVS diode operates as a voltage-clamping protection device that enters avalanche conduction when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage performance and fast response time (<1 ns), while the low incremental surge resistance minimizes clamping overshoot during high-current transients.
The SMBJ160AHM3_B/H is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), supports 5.0 W steady-state power dissipation at 50 °C on infinite heatsink, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak temperature tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 160 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working range. |
| VBR min/max | 178 V / 197 V at IT = 1 mA - Confirmed breakdown range ensuring reliable turn-on margin above VWM. |
| VC @ IPPM | 259 V at 2.3 A - Clamped voltage under standardized 10/1000 µs surge; determines protected circuit's peak stress level. |
| PPPM | 600 W - Peak pulse power handling capability; defines transient energy absorption capacity per event. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in high-ambient industrial environments. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient; informs PCB copper pad design for thermal management. |
| ID @ VWM | 1.0 µA - Reverse leakage at rated stand-off voltage; ensures minimal standby power loss and signal integrity. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode indicated by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground during overvoltage events. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without degradation. |
| AEC-Q101 qualified option (HM3 suffix) | Validated for automotive powertrain and body electronics where reliability under thermal cycling is critical. |
| Low profile SMB package (DO-214AA) | 0.220" × 0.155" footprint supports high-density PCB layouts and automated SMT placement. |
| Glass passivated junction | Ensures stable VBR and low leakage across temperature (-55 °C to +150 °C) and lifetime. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, reducing manufacturing overhead. |
Applications
| Industrial Power Supply Protection | Telecom Line Interface Protection |
|---|---|
|
Use Scenario: Input stage of 24 V/48 V DC-DC converters exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between input rail and chassis ground. Use Value: Limits transient voltage to ≤259 V, preventing damage to upstream rectifiers and downstream PWM controllers. |
Use Scenario: Protection of RS-485 transceivers and Ethernet PHYs connected to outdoor cabling in base stations. IC Role / Device Role / Timing Role: Primary surge suppression device on differential data lines referenced to local ground. Use Value: Absorbs 600 W surges while maintaining <1.0 µA leakage at 160 V, preserving signal integrity and bias stability. |
| Automotive Body Control Module (BCM) | Sensor Signal Conditioning Circuitry |
|
Use Scenario: 12 V battery-fed lighting and actuator drivers subject to ISO 7637-2 pulse 1/2a/5a transients. IC Role / Device Role / Timing Role: Unidirectional clamp on switched power rail feeding relays and solenoids. Use Value: With HM3 suffix, meets AEC-Q101 requirements and clamps pulses within 1 ns to protect MCU I/O and driver ICs. |
Use Scenario: Analog front-end of pressure/temperature sensors in HVAC or industrial automation systems. IC Role / Device Role / Timing Role: Low-leakage transient suppressor on sensor supply (VDD) and output (VOUT) lines. Use Value: 1.0 µA ID at 160 V prevents measurement offset drift; 259 V VC avoids ADC saturation during ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ160AHE3_B/H | RoHS-compliant but not halogen-free; lacks HM3's halogen-free certification. | Preferred for commercial-grade industrial designs where halogen content is unrestricted. | Select when cost sensitivity outweighs halogen-free requirement and AEC-Q101 is not needed. |
| SMBJ160A-M3/52 | Same electrical specs; packaged in 7" tape/reel (750 pcs) with M3 suffix (halogen-free, RoHS). | Identical performance but different packaging format and ordering code structure. | Choose for volume procurement requiring standard 7" reel delivery and M3 compliance documentation. |
Compared with SMBJ160AHM3_B/H, the HE3 variant trades halogen-free status for lower unit cost in non-automotive applications, while the M3/52 offers identical halogen-free performance in a different tape-and-reel configuration-neither is pin-compatible in the sense of drop-in replacement due to differing suffix-driven compliance and packaging attributes.
Availability
SMBJ160AHM3_B/H is available at Aetrix Electronics and suitable for industrial power supplies, telecom line interfaces, and automotive body control modules requiring stable component supply with halogen-free and AEC-Q101-qualified assurance.
Supply support for SMBJ160AHM3_B/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 high-power handling.
The SMBJ series is engineered for robust transient suppression in harsh environments, targeting industrial, automotive, and telecom applications where failure resilience and long-term parametric stability are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ160AHM3_B/H under a 10/1000 µs surge?
The SMBJ160AHM3_B/H has a maximum clamping voltage (VC) of 259 V when subjected to its rated peak pulse current of 2.3 A using the standardized 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88392 and defines the upper voltage limit imposed on protected circuitry during transient events. The SMBJ160AHM3_B/H maintains this clamping performance across its specified operating temperature range.
Is SMBJ160AHM3_B/H certified for automotive use?
The SMBJ160AHM3_B/H carries the HM3 suffix, indicating it is halogen-free, RoHS-compliant, and eligible for AEC-Q101 qualification. While the base SMBJ160A family is AEC-Q101 qualified, final certification applies to specific lot-level test reports - users must verify qualification status via Vishay's official AEC-Q101 certificate for the HM3 variant. The SMBJ160AHM3_B/H is intended for automotive body electronics where such qualification is required.
What does the "B/H" suffix mean in SMBJ160AHM3_B/H?
In SMBJ160AHM3_B/H, "B/H" denotes the packaging configuration: "B" indicates the component is supplied on 7-inch diameter plastic tape and reel, and "H" specifies the preferred package code per Vishay's ordering nomenclature. This matches the "H" entry in the Ordering Information table (page 3 of doc 88392), confirming 750 units per reel. The SMBJ160AHM3_B/H is not a functional variant - all electrical and thermal specs align with the base SMBJ160A-HM3 designation.
How does SMBJ160AHM3_B/H differ from bidirectional SMBJ160CA variants?
The SMBJ160AHM3_B/H is unidirectional, meaning it conducts only when cathode voltage exceeds anode by ≥VBR - ideal for DC rail protection with defined polarity. In contrast, SMBJ160CA is bidirectional, offering symmetrical clamping in both directions for AC or floating signal lines. They share the same VWM (160 V), PPPM (600 W), and SMB package, but differ in polarity marking (band present vs. no marking) and leakage behavior - the SMBJ160AHM3_B/H exhibits 1.0 µA ID at VWM, while bidirectional versions have higher ID limits per note (3) in the datasheet.
What thermal derating applies to SMBJ160AHM3_B/H above 25 °C ambient?
SMBJ160AHM3_B/H follows the derating curve in Figure 2 of document 88392: its peak pulse power (PPPM) decreases linearly above TA = 25 °C, reaching ~50 % at TJ = 100 °C and zero at 150 °C. For continuous power, PD = 5.0 W is rated at TA = 50 °C on infinite heatsink; actual steady-state dissipation must be calculated using RθJA = 100 °C/W and layout-specific copper area. The SMBJ160AHM3_B/H requires careful thermal design when deployed in enclosed enclosures exceeding 70 °C ambient.
SMBJ160AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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)
SMBJ160AHM3_B/H FAQ
1.How can I place an order for SMBJ160AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ160AHM3_B/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 SMBJ160AHM3_B/H reliable?
The price and inventory of SMBJ160AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ160AHM3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ160AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ160AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ160AHM3_B/H?
SMBJ160AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ160AHM3_B/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 SMBJ160AHM3_B/H?
For technical support, including SMBJ160AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ160AHM3_B/H requirements.
6.How does Aetrix verify that SMBJ160AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ160AHM3_B/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 SMBJ160AHM3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ160AHM3_B/H?
All SMBJ160AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ160AHM3_B/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 SMBJ160AHM3_B/H part is unused and in its original packaging.
Return procedure for SMBJ160AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ160AHM3_B/H Tags
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