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Diodes Incorporated KBJL1508-TU
- Part No.:
- KBJL1508-TU
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, KBJL
- Datasheet:
-
KBJL1508-TU.pdf
- Description:
- BRIDGE RECT 1PHASE 800V 15A KBJL
- Quantity:
- Payment:
- Shipping:
Inventory:7,323
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Product details
Overview
KBJL1508-TU from Diodes Incorporated is a 15A standard recovery bridge rectifier with 800V peak repetitive reverse voltage (VRRM), 1.0V max forward voltage at 7.5A, and 10µA max reverse leakage at 25°C. It features glass-passivated die construction, UL-recognized packaging (E95060), and is optimized for high-surge AC/DC power supplies in consumer electronics.
For engineers reviewing the KBJL1508-TU datasheet, KBJL1508-TU pinout, KBJL1508-TU application, or KBJL1508-TU equivalent, this device serves as a drop-in replacement in TV, gaming console, and PC power supply front-end rectification where thermal robustness, RoHS-compliant lead finish, and 220A surge capability are critical selection criteria.
Technical Context
This bridge rectifier integrates four silicon diodes in a single KBJL molded plastic package with matte tin-plated leads. Its standard recovery characteristic (trr not specified, but typical for standard recovery bridges) supports line-frequency (50/60Hz) rectification without significant switching loss concerns.
Thermal design is enabled by dual RθJC (1°C/W with heatsink) and RθJA (4°C/W with 35mm × 35mm × 1.7mm Cu heatsink) values, supporting both heatsink-mounted and limited-board-space deployments. The 55pF junction capacitance at 1MHz/4V reverse bias minimizes high-frequency coupling in EMI-sensitive power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Withstands up to 800V peak reverse voltage during AC half-cycle blocking. |
| IF(AV) | 15 A - Continuous average forward current rating with heatsink at TC = +130°C. |
| VF Max | 1.0 V @ 7.5A - Forward conduction loss directly impacts efficiency and thermal rise in DC bus generation. |
| IR Max | 10 µA @ 25°C - Low leakage preserves hold-up capacitor charge and reduces standby power loss. |
| IFSM (8.3ms) | 220 A - Sustains inrush surges from cold-started transformers or bulk capacitors. |
| RθJC | 1 °C/W - Junction-to-case thermal resistance enables precise heatsink sizing for thermal management. |
| CT | 55 pF @ 1MHz - Junction capacitance affects high-frequency noise coupling and snubber design. |
Pinout & Package
Package: KBJL - Molded plastic case (UL 94V-0), 2.4g weight, dimensions per Diodes Package Outline KBJL (D = 24.7–25.3mm, E = 10.0–10.6mm, L = 14.6–15.2mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | Input AC Terminal 1 | One of two alternating-current input pins; connects to transformer secondary or AC line input. |
| AC2 | Input AC Terminal 2 | Second AC input pin; completes full-wave bridge input path with AC1. |
| + (Anode Output) | Positive DC Output | Rectified positive output node; delivers smoothed DC to bulk capacitor or regulator input. |
| – (Cathode Output) | Negative DC Output | Rectified negative output node; serves as common return/reference for downstream circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivation | Enhances long-term reliability and moisture resistance of PN junctions under thermal cycling. |
| UL Recognized (E95060) | Validates safety compliance for end-equipment certification in North America and globally. |
| Lead-free & Halogen-free | Meets RoHS 3 and "Green" standards (<900ppm Br/Cl, <1000ppm Sb) for eco-conscious manufacturing. |
| High IFSM (220A) | Supports robust inrush handling without degradation in consumer-grade power supplies. |
Applications
| TV Power Supplies | Game Console Power Units |
|---|---|
Use Scenario: Front-end AC/DC conversion in 100–300W LCD/LED TV power supplies operating from 100–240VAC mains. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting AC line to unregulated DC bus prior to PFC and DC/DC stages. Use Value: 15A IF(AV) and 220A IFSM ensure reliable operation during repeated cold starts and brown-out recovery. | Use Scenario: Primary-side rectification in compact, fanless game console power adapters with high peak-load demands. IC Role / Device Role / Timing Role: Standard-recovery bridge providing low-conduction-loss DC bus generation without high-frequency switching artifacts. Use Value: 1.0V VF max at 7.5A reduces conduction heating, enabling smaller heatsinks in thermally constrained enclosures. |
| Desktop PC ATX PSUs | Industrial AC Input Modules |
Use Scenario: Bulk rectification stage in multi-rail ATX power supplies delivering +3.3V, +5V, and +12V outputs. IC Role / Device Role / Timing Role: High-current bridge rectifier feeding bulk storage capacitors before active PFC controller input. Use Value: UL recognition and 800V VRRM support universal input (90–264VAC) designs with margin for line transients. | Use Scenario: AC input conditioning in DIN-rail mounted industrial power modules for PLCs and HMIs. IC Role / Device Role / Timing Role: Robust, creepage-optimized bridge rectifier for harsh environments requiring extended temperature operation. Use Value: –55°C to +150°C operating range and 10µA IR at 25°C ensure stable performance across wide ambient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU8K (ON Semiconductor) | Same KBJL footprint, 800V VRRM, 1.1V VF max @ 7.5A, 200A IFSM (8.3ms) | Slightly higher VF increases conduction loss; lower IFSM limits surge margin | Acceptable for cost-sensitive, non-critical surge applications where thermal headroom exists |
| KBPC1508 (Shindengen) | Identical ratings (800V/15A/1.0V/220A), same KBJL package, but lead finish differs (SnPb vs matte tin) | Not RoHS-compliant; unsuitable for EU/China export without exemption | Only for legacy repair or non-regulated markets where lead-free compliance is not required |
Compared with GBU8K and KBPC1508, KBJL1508-TU offers superior surge robustness (220A vs 200A), guaranteed RoHS/halogen-free compliance, and UL recognition-making it preferred for new-design consumer power supplies targeting global certification.
Availability
KBJL1508-TU is available at Aetrix Electronics and suitable for TV power supplies, game console power units, and desktop PC ATX PSUs requiring stable component supply, consistent thermal performance, and regulatory-compliant sourcing.
Supply support for KBJL1508-TU 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The KBJL series belongs to Diodes' standard-recovery bridge rectifier product line, engineered specifically for high-current, line-frequency AC/DC conversion in cost-sensitive, high-volume consumer and industrial power supplies.
FAQ
What is the maximum junction temperature for continuous operation?
The KBJL1508-TU has an operating junction temperature range of –55°C to +150°C. For continuous rated current (15A), case temperature must be maintained at ≤+130°C with heatsink; derating applies above that point per Figure 1 in DS45590.
Does KBJL1508-TU require a heatsink for 15A operation?
Yes - the 15A average forward current rating is specified only with heatsink at TC = +130°C. Without heatsink, the rated IF(AV) drops to 2.8A. Thermal resistance data (RθJC = 1°C/W with heatsink, RθJA = 4°C/W on Cu pad) confirms mandatory heatsinking for full-rated operation.
Is KBJL1508-TU suitable for high-frequency switching applications?
No - it is a standard recovery bridge rectifier with no specified reverse recovery time (trr). Its design targets 50/60Hz line-frequency rectification; using it in high-frequency SMPS (>20kHz) would cause excessive switching loss and overheating due to slow carrier recombination.
What does the "-TU" suffix indicate in the orderable part number?
The "-TU" suffix denotes tube packaging: 20 pieces per tube. This is the standard carrier format for KBJL-series bridge rectifiers from Diodes Incorporated, distinct from tape-and-reel ("-TR") or bulk options.
KBJL1508-TU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-SIP, KBJL
- Packaging:
- Tube
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 800 V
- Current - Average Rectified (Io):
- 15 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 7.5 A
- Current - Reverse Leakage @ Vr:
- 10 µA @ 800 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- KBJL
KBJL1508-TU FAQ
1.How can I place an order for KBJL1508-TU through Aetrix?
Please submit a Request for Quotation (RFQ) for KBJL1508-TU 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 KBJL1508-TU reliable?
The price and inventory of KBJL1508-TU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KBJL1508-TU is usually 5 days.
3.What payment methods are accepted for KBJL1508-TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KBJL1508-TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KBJL1508-TU?
KBJL1508-TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KBJL1508-TU 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 KBJL1508-TU?
For technical support, including KBJL1508-TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KBJL1508-TU requirements.
6.How does Aetrix verify that KBJL1508-TU is sourced from the original manufacturer or authorized distributors?
All KBJL1508-TU 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 KBJL1508-TU meets industry standards.
7.What is the process for return or replacement of KBJL1508-TU?
All KBJL1508-TU units undergo pre-shipment inspection (PSI). If there is an issue with KBJL1508-TU, 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 KBJL1508-TU part is unused and in its original packaging.
Return procedure for KBJL1508-TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
KBJL1508-TU Tags
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