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Taiwan Semiconductor Corporation SMBJ60
- Part No.:
- SMBJ60
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ60.pdf
- Description:
- 600W, 74.1V, 10%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,585
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Product details
Overview
SMBJ60 from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy ESD and surge protection in DC power rails and signal lines. It features a 60 V working stand-off voltage (VWM), 66.7–81.5 V breakdown voltage (VBR @ 1 mA), 107 V maximum clamping voltage (VC @ 5.8 A), and <1.0 ps response time - deployed in automotive infotainment power inputs and industrial PLC I/O modules.
For engineers reviewing the SMBJ60 datasheet, SMBJ60 pinout, SMBJ60 application, or SMBJ60 equivalent, key selection criteria include clamping performance under 10/1000 µs surges, leakage current at 60 V (<1 µA), unidirectional polarity marking, and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive electronics robustness.
Technical Context
The SMBJ60 operates as a silicon avalanche diode with glass-passivated junction, enabling fast transient suppression without degradation under repetitive stress. Its unidirectional configuration provides forward conduction only during overvoltage events, with VF = 3.5 V at 50 A for this voltage grade (per note 2 in Absolute Maximum Ratings).
Thermal design relies on RθJC = 10 °C/W and RθJA = 55 °C/W, supporting continuous operation up to TJ = 150 °C. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements, confirming suitability for automated SMT assembly and harsh-environment deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 60 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC rail margin. |
| VBR min/max | 66.7 V / 81.5 V @ 1 mA - Confirmed avalanche onset range; ensures reliable triggering above nominal system voltage. |
| VC @ IPP | 107 V @ 5.8 A (10/1000 µs) - Peak clamped voltage seen by protected circuit; determines downstream component voltage rating. |
| PPK | 600 W - Non-repetitive peak pulse power handling; validates immunity to ISO 7637-2 Pulse 5a surges. |
| ID @ VWM | <1 µA - Reverse leakage at rated stand-off; minimizes quiescent power loss in battery-powered systems. |
| Response time | <1.0 ps - Junction-level switching speed; enables protection of high-speed interfaces like CAN FD or USB 2.0. |
| Package | DO-214AA (SMB) - Standardized surface-mount outline with cathode band marking; compatible with IPC-7351B footprint. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band indicating terminal 1 (cathode), anode at terminal 2. Weight ≈ 0.090 g. Moisture sensitivity level 1 (J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (banded end) | Cathode | Connected to protected line; conducts during reverse overvoltage to shunt energy to ground. |
| Terminal 2 | Anode | Typically tied to system ground or low-impedance return path; completes clamping current loop. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over temperature and lifetime; eliminates surface contamination-induced drift in industrial environments. |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) - critical for automotive ECUs. |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS directives; supports green manufacturing and end-of-life recycling requirements. |
| Automated placement compatibility | Standard SMB tape-and-reel packaging (3,000 pcs/reel) and J-STD-002 solderable leads enable high-yield SMT assembly. |
Applications
| Automotive Power Input Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V battery-fed infotainment head unit exposed to load-dump transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input fuse and DC-DC converter input to clamp surges before LDOs or PMICs. Use Value: Limits voltage to ≤107 V during 600 W transients, preventing damage to 36 V-rated input capacitors and enabling single-stage protection architecture. |
Use Scenario: 4–20 mA current-loop sensor node in factory automation subject to EFT bursts per IEC 61000-4-4. IC Role / Device Role / Timing Role: TVS mounted across sensor output terminals to absorb 5 kV/500 Hz EFT pulses without disrupting analog signal integrity. Use Value: Sub-1 ps response ensures clamping occurs before op-amp input stages saturate, preserving measurement accuracy during EMC testing. |
| LED Driver Overvoltage Clamp | USB Port ESD Suppression |
Use Scenario: Constant-current LED driver in streetlight control cabinet subjected to lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: SMBJ60 installed across primary-side bulk capacitor to limit transient overvoltage during MOV failure or grid switching events. Use Value: 600 W PPK rating handles multi-cycle surges exceeding 10/1000 µs waveform energy, extending capacitor life and avoiding thermal runaway. |
Use Scenario: USB 2.0 data port on medical diagnostic equipment requiring IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) ESD protection. IC Role / Device Role / Timing Role: Unidirectional TVS placed on VBUS line to clamp ESD events while allowing normal 5 V charging operation. Use Value: 60 V VWM avoids false triggering during USB enumeration; 107 V VC ensures downstream USB PHY ICs (rated ≥12 V) remain undamaged. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ60A | Bidirectional configuration; symmetric VBR (66.7–73.7 V); same VWM (60 V) but dual-polarity clamping. | Required where both positive and negative transients occur on same line (e.g., RS-485 bus), unlike SMBJ60's unidirectional use. | Select SMBJ60A only if bidirectional protection is needed; SMBJ60 is preferred for DC power rails with defined polarity. |
| SACI6.0 | Same DO-214AA package but lower PPK (400 W); VBR 6.4–7.0 V; optimized for low-voltage logic-level protection. | Not suitable for 60 V systems; intended for 3.3/5 V digital I/O, not power rail clamping. | SACI6.0 is incompatible with SMBJ60's voltage class; use only in sub-12 V signal paths where 600 W surge capacity is unnecessary. |
Compared with SMBJ60A and SACI6.0, the SMBJ60 delivers optimal trade-off of 60 V stand-off margin, 600 W surge capacity, and unidirectional efficiency for automotive and industrial DC power protection - whereas SMBJ60A adds bidirectional capability at no clamping voltage improvement, and SACI6.0 lacks both voltage rating and energy handling for this application tier.
Availability
SMBJ60 is available at Aetrix Electronics and suitable for automotive ECU power inputs, industrial PLC I/O modules, LED driver front-ends, and USB VBUS protection requiring stable component supply across extended production lifecycles.
Supply support for SMBJ60 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs since 1979.
The SMBJ series was engineered for high-reliability transient suppression in automotive and industrial environments, emphasizing ISO 7637-2 compliance, low leakage, and robust thermal performance in standard SMB packages.
FAQ
What is the maximum clamping voltage of SMBJ60 under a 10/1000 µs surge?
The SMBJ60 has a maximum clamping voltage (VC) of 107 V when subjected to a 10/1000 µs waveform at 5.8 A peak impulse current. This value is measured per ANSI/IEEE C62.35 standards and represents the highest voltage the protected circuit will experience during a standardized surge event. The SMBJ60 maintains this clamping performance consistently across its specified operating temperature range.
Is SMBJ60 suitable for bidirectional signal line protection?
No, SMBJ60 is a unidirectional TVS diode and must be used only on polarized circuits such as DC power rails. For bidirectional applications like RS-485 or CAN bus lines, the SMBJ60A variant - which offers symmetrical breakdown in both directions - is required. Using SMBJ60 on AC or bipolar signals risks failure due to forward conduction during negative transients.
What is the leakage current specification for SMBJ60 at its working stand-off voltage?
The SMBJ60 exhibits a maximum blocking leakage current (ID) of less than 1 µA when biased at its 60 V working stand-off voltage (VWM). This ultra-low leakage is confirmed at TA = 25°C and supports energy-sensitive applications including battery-backed sensors and always-on automotive modules where standby power budget is constrained.
Does SMBJ60 meet automotive transient immunity standards?
Yes, SMBJ60 is explicitly validated to meet ISO 7637-2 requirements for Pulses 1, 2a, 2b, 3a, and 3b - covering load dump, switch-off transients, and capacitive coupling events common in 12 V and 24 V vehicle electrical systems. Its 600 W peak pulse power rating and 107 V clamping voltage directly address Pulse 5a (load dump) energy levels.
What is the thermal resistance from junction to ambient for SMBJ60?
The SMBJ60 has a junction-to-ambient thermal resistance (RθJA) of 55 °C/W under standard JEDEC test conditions (single device on 1-inch² copper pad). This value enables reliable operation up to 150 °C junction temperature when mounted on PCBs with adequate copper area, making it suitable for under-hood automotive and enclosed industrial enclosures.
SMBJ60 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 60V
- Voltage - Breakdown (Min):
- 66.7V
- Voltage - Clamping (Max) @ Ipp:
- 107V
- Current - Peak Pulse (10/1000µs):
- 5.8A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ60 FAQ
1.How can I place an order for SMBJ60 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ60 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 SMBJ60 reliable?
The price and inventory of SMBJ60 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ60 is usually 5 days.
3.What payment methods are accepted for SMBJ60?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ60 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ60?
SMBJ60 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ60 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 SMBJ60?
For technical support, including SMBJ60 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ60 requirements.
6.How does Aetrix verify that SMBJ60 is sourced from the original manufacturer or authorized distributors?
All SMBJ60 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 SMBJ60 meets industry standards.
7.What is the process for return or replacement of SMBJ60?
All SMBJ60 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ60, 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 SMBJ60 part is unused and in its original packaging.
Return procedure for SMBJ60:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ60 Tags
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