My Inquiry
My Account
Vishay Semiconductor Opto Division LH1501BABTR
- Part No.:
- LH1501BABTR
- Manufacturer:
- Vishay Semiconductor Opto Division
- Category:
- Solid State Relays (SSR)
- Package:
- 6-SMD (0.300", 7.62mm)
- Datasheet:
-
LH1501BABTR.pdf
- Description:
- SSR RELAY SPST-NC 150MA 0-350V
- Quantity:
- Payment:
- Shipping:
Inventory:2,743
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LH1501BABTR from Vishay Semiconductors is a Form B (normally closed) solid-state relay with SMD-6 package, 350 V load voltage rating, 20 Ω typical on-resistance (AC/DC), and 3750 VRMS input-output isolation. It replaces electromechanical relays in telecom switching, security equipment, and industrial controls using infrared LED actuation and photodiode-driven MOSFET output stage.
For engineers reviewing the LH1501BABTR datasheet, LH1501BABTR pinout, LH1501BABTR application, or LH1501BABTR equivalent, key selection criteria include bidirectional 150 mA DC load current capability, clean bounce-free switching, UL/VDE agency approvals, and tape-and-reel SMD-6 packaging for automated assembly.
Technical Context
The LH1501BABTR integrates an infrared LED input stage optically coupled to a photodiode array that drives dual MOSFETs configured as a normally closed (Form B) AC/DC switch. Its hybrid multi-chip construction enables zero-crossing–free operation and bidirectional conduction without external snubbers.
Control logic is fully self-contained: no external gate drivers or bias networks are required. The device supports both AC and DC loads up to 350 V, with turn-on/turn-off times of 2–3 ms and 1–3 ms respectively at 5 mA LED drive current and 50 mA load current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Load Voltage | 350 V - Supports mains-connected AC and high-voltage DC loads without derating. |
| On-Resistance (TYP) | 20 Ω - Enables low-loss switching for ≤150 mA bidirectional DC or AC loads. |
| Isolation Voltage | 3750 VRMS - Meets reinforced insulation requirements for safety-critical industrial interfaces. |
| Turn-on Time | 2–3 ms - Ensures deterministic timing for programmable logic-controlled sequencing. |
| Off-State Leakage | 0.08–1 μA - Guarantees reliable open-circuit blocking under full 350 V stress. |
| Package | SMD-6 - Surface-mount footprint compatible with J-STD-020 lead-free reflow profiles. |
Pinout & Package
SMD-6 package with gull-wing leads; 7.62 mm × 8.01 mm body, 2.54 mm pitch, ISO method A mounting pattern.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | LED Anode / Cathode | Input control path: 50 mA max forward current, 1.15–1.45 V forward voltage. |
| 4, 6 | Output Source (+) | High-side output terminals; connected internally to MOSFET drains for bidirectional conduction. |
| 5 | Output Drain (–) | Common output sink terminal; forms SPST Form B switch with pins 4 and 6. |
Key Features
| Feature | Design Value |
|---|---|
| Bounce-free switching | Eliminates contact arcing and EMI during state transitions-critical for sensitive instrumentation signal paths. |
| Low power consumption | 0.2–0.9 mA LED turn-on threshold enables direct microcontroller GPIO drive without buffer stages. |
| Clean AC/DC compatibility | No external zero-crossing circuitry needed; MOSFET output conducts symmetrically in both directions. |
| UL & VDE certified | Validated isolation and flammability compliance simplifies end-equipment safety certification. |
Applications
| Telecom Line Switching | Security System Actuation |
|---|---|
Use Scenario: Remote activation of POTS line supervision circuits and ring-trip detection in VoIP gateways. IC Role / Device Role / Timing Role: Form B solid-state relay isolating MCU control logic from telephone line voltages up to 350 V. Use Value: Eliminates mechanical relay wear and audible click noise while maintaining UL-certified isolation. | Use Scenario: Triggering alarm siren outputs and door lock solenoids in access control panels. IC Role / Device Role / Timing Role: Bidirectional load switch enabling polarity-agnostic DC actuation of 12–24 V security peripherals. Use Value: 150 mA continuous bidirectional current rating supports sustained lock engagement without thermal shutdown. |
| Industrial Sensor Interface | Test Equipment Signal Routing |
Use Scenario: Isolating PLC digital outputs from field-mounted pressure/temperature transmitters with 4–20 mA loops. IC Role / Device Role / Timing Role: Normally closed safety interlock that defaults to active state during controller reset or power loss. Use Value: Inherent Form B behavior provides fail-safe operation without external pull-up or latching circuitry. | Use Scenario: Multiplexing calibration reference signals between DMM channels and sensor simulators in automated test systems. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA), low-capacitance (35 pF) switch minimizing signal distortion during routing. Use Value: 3 pF input-to-output capacitance preserves high-frequency integrity of precision analog paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar solid-state relay applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay LH1501BT | DIP-6 through-hole package; identical electrical specs but different mounting and soldering profile (wave vs. reflow). | Preferred for prototyping, manual assembly, or legacy wave-soldered boards where SMD placement is impractical. | Select LH1501BT when board assembly uses through-hole processes or requires hand-soldering flexibility. |
| IXYS CPC1976Y | Form A (normally open) configuration; 400 V load rating; 35 Ω typical RON; same SMD-6 footprint but non-pin-compatible pinout. | Requires PCB redesign due to reversed output polarity and different pin assignment (e.g., output on pins 3/4 instead of 4/5/6). | Choose CPC1976Y only if normally open behavior and higher voltage margin are prioritized over drop-in replacement. |
Compared with LH1501BT and CPC1976Y, the LH1501BABTR uniquely delivers Form B functionality in a reflow-compatible SMD-6 package with industry-leading 20 Ω RON and UL/VDE certification-making it optimal for automated production of safety-isolated, fail-safe industrial controls.
Availability
LH1501BABTR is available at Aetrix Electronics and suitable for telecom switching, security system actuation, and industrial sensor interface applications requiring stable component supply, long-term lifecycle support, and certified isolation performance.
Supply support for LH1501BABTR 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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and optoelectronics with emphasis on reliability, precision, and safety certification.
The LH1501 series belongs to Vishay's optocoupler-based solid-state relay product line, engineered specifically to replace electromechanical relays in space-constrained, high-reliability industrial and telecom systems demanding bounce-free, long-life switching.
FAQ
What is the maximum continuous load current rating for LH1501BABTR?
The LH1501BABTR supports 150 mA continuous DC load current in bidirectional mode and 200 mA in unidirectional mode. These ratings are validated across the full -40 °C to +85 °C ambient temperature range per Vishay Document 83805. Exceeding these values may trigger thermal derating or reduce lifetime reliability. The LH1501BABTR datasheet specifies peak single-shot current up to 350 mA for 100 ms.
Does LH1501BABTR support AC load switching?
Yes, the LH1501BABTR is explicitly rated for AC/DC operation with a 350 V peak load voltage. Its internal dual-MOSFET output stage enables symmetrical conduction without zero-crossing circuitry, allowing direct switching of 120/230 VAC loads. The LH1501BABTR maintains 20 Ω typical on-resistance and <1 μA off-state leakage under full AC stress per its electrical characteristics table.
What is the isolation voltage rating of LH1501BABTR and which standards does it meet?
The LH1501BABTR provides 3750 VRMS input-to-output isolation for 1 second at ≤10 μA leakage, meeting UL 1577 and VDE 0884-10 requirements. This reinforced insulation rating is verified per Vishay Document 83805 and supports use in applications requiring basic or reinforced isolation per IEC 61000-4-5 and IEC 60950-1. The LH1501BABTR is not rated for medical or life-support systems.
Can LH1501BABTR be driven directly from a microcontroller GPIO?
Yes-the LH1501BABTR has a low LED turn-on threshold of 0.2–0.9 mA at 25 °C, enabling direct drive from most 3.3 V or 5 V microcontroller GPIOs without external current-limiting resistors in low-speed applications. For robustness across temperature and voltage variation, a 1 kΩ series resistor is recommended. The LH1501BABTR input stage tolerates up to 5 V reverse voltage and 50 mA continuous forward current.
What is the difference between LH1501BABTR and LH1501BT?
The LH1501BABTR and LH1501BT share identical electrical specifications-including 350 V load voltage, 20 Ω RON, and 3750 VRMS isolation-but differ in package: LH1501BABTR uses SMD-6 for surface-mount reflow assembly, while LH1501BT uses DIP-6 for through-hole wave soldering. Pinouts are functionally equivalent but mechanically incompatible. The LH1501BABTR marking includes "TR" suffix denoting tape-and-reel packaging.
LH1501BABTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Semiconductor Opto Division
- Series:
- LH1501
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Mounting Type:
- Surface Mount
- Circuit:
- SPST-NC (1 Form B)
- Output Type:
- AC, DC
- Voltage - Input:
- 1.26VDC
- Voltage - Load:
- 0 V ~ 350 V
- Load Current:
- 150 mA
- On-State Resistance (Max):
- 20 Ohms
- Termination Style:
- Gull Wing
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 6-SMD
- Approval Agency:
- UL, VDE
- Grade:
- -
- Qualification:
- -
LH1501BABTR FAQ
1.How can I place an order for LH1501BABTR through Aetrix?
Please submit a Request for Quotation (RFQ) for LH1501BABTR 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 LH1501BABTR reliable?
The price and inventory of LH1501BABTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LH1501BABTR is usually 5 days.
3.What payment methods are accepted for LH1501BABTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LH1501BABTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LH1501BABTR?
LH1501BABTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LH1501BABTR 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 LH1501BABTR?
For technical support, including LH1501BABTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LH1501BABTR requirements.
6.How does Aetrix verify that LH1501BABTR is sourced from the original manufacturer or authorized distributors?
All LH1501BABTR 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 LH1501BABTR meets industry standards.
7.What is the process for return or replacement of LH1501BABTR?
All LH1501BABTR units undergo pre-shipment inspection (PSI). If there is an issue with LH1501BABTR, 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 LH1501BABTR part is unused and in its original packaging.
Return procedure for LH1501BABTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LH1501BABTR Tags
.jpg)
-
G3VM-21UR11(TR05)
Omron Electronics Inc-EMC Div
-
G3VM-61VY3(TR05)
Omron Electronics Inc-EMC Div
-
CPC1017NTR
Littelfuse Inc.
-
CPC1017N
Littelfuse Inc.
-
CPC1006N
Littelfuse Inc.
-
VO1400AEFTR
Vishay Semiconductor Opto Division
-
CPC1006NTR
Littelfuse Inc.
-
TLP175A(TPL,E
Toshiba Semiconductor and Storage
-
CPC1002NTR
Littelfuse Inc.
-
AQY280S
Panasonic Electric Works
-
CPC1117NTR
Littelfuse Inc.
-
CPC1106NTR
Littelfuse Inc.
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
